build: Update dependency org.checkerframework:checker-qual to v3.22.0

* Actually set plot biome chunk by chunk

* Better variable name for chunk position

.github/ISSUE_TEMPLATE/bug_report.yml

@@ -7,7 +7,7 @@ body:
     attributes:
       value: |
         Thanks for taking the time to fill out this bug report for PlotSquared! Fill out the following form to your best ability to help us fix the problem.
-        Only use this if you're absolutely sure that you found a bug and can reproduce it. For anything else, use: [our Discord server](https://discord.gg/intellectualsites) or [the wiki](https://github.com/IntellectualSites/PlotSquared-Documentation/wiki).
+        Only use this if you're absolutely sure that you found a bug and can reproduce it. For anything else, use: [our Discord server](https://discord.gg/intellectualsites) or [the wiki](https://intellectualsites.github.io/plotsquared-documentation/).
         Do NOT use the public issue tracker to report security vulnerabilities! They are disclosed using [this](https://forms.gle/btgdRn9yhGtzEiGW8) form!
 
   - type: dropdown
@@ -27,6 +27,7 @@ body:
       description: Which server version version you using? If your server version is not listed, it is not supported. Update to a supported version first.
       multiple: false
       options:
+        - '1.18.2'
         - '1.18.1'
         - '1.18'
         - '1.17.1'

.github/ISSUE_TEMPLATE/config.yml

@@ -4,5 +4,5 @@ contact_links:
     url: https://discord.gg/intellectualsites
     about: Our support Discord, please ask questions and seek support here.
   - name: PlotSquared Wiki
-    url: https://github.com/IntellectualSites/PlotSquared-Documentation/wiki
+    url: https://intellectualsites.github.io/plotsquared-documentation/
     about: Take a look at the wiki page for instructions how to setup PlotSquared and use its commands.

.github/ISSUE_TEMPLATE/feature_request.yml

@@ -7,7 +7,7 @@ body:
     attributes:
       value: |
         Thanks for taking the time to fill out this feature request for PlotSquared! Fill out the following form to your best ability to help us understand your feature request and greately improve the change of it getting added.
-        For anything else than a feature request, use: [our Discord server](https://discord.gg/intellectualsites) or [the wiki](https://github.com/IntellectualSites/PlotSquared-Documentation/wiki).
+        For anything else than a feature request, use: [our Discord server](https://discord.gg/intellectualsites) or [the wiki](https://intellectualsites.github.io/plotsquared-documentation/).
 
   - type: textarea
     attributes:

.github/workflows/build.yml

@@ -4,14 +4,15 @@ on: [ pull_request, push ]
 
 jobs:
   build:
+    if: ${{ github.event_name != 'pull_request' || github.repository != github.event.pull_request.head.repo.full_name }}
     runs-on: ubuntu-latest
     steps:
       - name: Checkout Repository
-        uses: actions/checkout@v2.4.0
+        uses: actions/checkout@v3
       - name: Validate Gradle Wrapper"
-        uses: gradle/wrapper-validation-action@v1.0.4
+        uses: gradle/wrapper-validation-action@v1
       - name: Setup Java
-        uses: actions/setup-java@v2.5.0
+        uses: actions/setup-java@v3
         with:
           distribution: temurin
           java-version: 17

.github/workflows/codeql.yml

@@ -0,0 +1,37 @@
+name: "CodeQL"
+
+on:
+  push:
+    branches: [ v6 ]
+  pull_request:
+    # The branches below must be a subset of the branches above
+    branches: [ v6 ]
+
+jobs:
+  analyze:
+    name: Analyze
+    runs-on: ubuntu-latest
+    permissions:
+      actions: read
+      contents: read
+      security-events: write
+
+    strategy:
+      fail-fast: false
+      matrix:
+        language: [ 'java' ]
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v3
+
+      - name: Initialize CodeQL
+        uses: github/codeql-action/init@v2
+        with:
+          languages: ${{ matrix.language }}
+
+      - name: Autobuild
+        uses: github/codeql-action/autobuild@v2
+
+      - name: Perform CodeQL Analysis
+        uses: github/codeql-action/analyze@v2

.github/workflows/rebase.yml

@@ -1,20 +0,0 @@
-name: Rebase Pull Request
-on:
-  issue_comment:
-    types: [created]
-
-jobs:
-  rebase:
-    name: Rebase
-    if: github.event.issue.pull_request != '' && contains(github.event.comment.body, '/rebase') && github.event.comment.author_association == 'MEMBER'
-    runs-on: ubuntu-latest
-    steps:
-      - name: Checkout Repository
-        uses: actions/checkout@v2.4.0
-        with:
-          token: ${{ secrets.REBASE_TOKEN }}
-          fetch-depth: 0
-      - name: Automatic Rebase
-        uses: cirrus-actions/rebase@1.5
-        env:
-          GITHUB_TOKEN: ${{ secrets.REBASE_TOKEN }}

.github/workflows/release-drafter.yml

@@ -11,8 +11,9 @@ on:
 
 jobs:
   update_release_draft:
+    if: ${{ github.event_name != 'pull_request' || github.repository != github.event.pull_request.head.repo.full_name }}
     runs-on: ubuntu-latest
     steps:
-      - uses: release-drafter/release-drafter@v5.17.6
+      - uses: release-drafter/release-drafter@v5.19.0
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

.gitignore

@@ -41,7 +41,8 @@ hs_err_pid*
 *.iml
 
 ## Directory-based project format:
-.idea/
+/.idea/*
+!/.idea/icon.svg
 # if you remove the above rule, at least ignore the following:
 
 # User-specific stuff:
@@ -74,9 +75,6 @@ hs_err_pid*
 # IntelliJ
 /out/
 
-# mpeltonen/sbt-idea plugin
-.idea_modules/
-
 # JIRA plugin
 atlassian-ide-plugin.xml
 

.idea/icon.svg

@@ -0,0 +1,49 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<svg xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:cc="http://creativecommons.org/ns#" xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:svg="http://www.w3.org/2000/svg" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 4000 3333.3333" height="3333.3333" width="4000" xml:space="preserve" id="svg2" version="1.1">
+		<metadata id="metadata8">
+			<rdf:RDF>
+				<cc:Work rdf:about="">
+					<dc:format>image/svg+xml</dc:format>
+                    <dc:type rdf:resource="http://purl.org/dc/dcmitype/StillImage" />
+				</cc:Work>
+			</rdf:RDF>
+		</metadata>
+    <defs id="defs6">
+			<clipPath id="clipPath18" clipPathUnits="userSpaceOnUse">
+				<path id="path16" d="M 0,2500 H 3000 V 0 H 0 Z" />
+			</clipPath>
+		</defs>
+    <g transform="matrix(1.3333333,0,0,-1.3333333,0,3333.3333)" id="g10">
+			<g id="g12">
+				<g clip-path="url(#clipPath18)" id="g14">
+					<g transform="translate(1486.1511,2242.6453)" id="g20">
+						<path id="path22" style="fill:#2b3f56;fill-opacity:1;fill-rule:nonzero;stroke:none" d="m 0,0 c 16.533,10.846 33.211,21.453 50.104,31.699 78.972,-48.281 153.985,-102.704 227.269,-159.144 148.61,-115.422 287.884,-243.01 414.393,-382.333 111.39,-122.861 212.751,-255.152 298.898,-396.971 52.744,-87.322 100.544,-177.884 139.514,-272.214 -11.638,-3.551 -23.108,-7.655 -34.362,-12.286 l -0.24,0.288 c -11.135,12.982 -24.141,24.212 -34.915,37.506 -22.557,23.013 -45.425,45.737 -68.03,68.678 -19.725,20.253 -40.601,39.45 -58.958,60.974 -36.355,36.451 -72.517,73.093 -108.944,109.471 -22.628,26.013 -48.064,49.385 -71.965,74.197 -19.029,19.485 -38.706,38.346 -57.519,57.999 -12.166,14.998 -26.684,27.716 -39.93,41.658 -27.668,27.524 -54.903,55.479 -82.571,82.979 -23.924,27.956 -51.664,52.264 -76.692,79.164 -4.68,4.487 -8.855,10.774 -15.886,11.326 -22.34,34.027 -58.311,57.327 -97.377,67.502 -104.312,99.153 -215.487,191.202 -332.661,274.782 -117.942,-83.94 -229.476,-176.781 -334.484,-276.39 -26.684,-0.024 -53.368,0.024 -80.076,-0.024 0.024,-26.564 0.048,-53.104 0,-79.668 -72.229,-73.021 -139.491,-150.937 -202.385,-232.092 -63.758,-82.619 -121.973,-169.51 -173.541,-260.264 131.932,-69.061 257.864,-149.521 375.926,-240.275 0.096,-26.444 -0.12,-52.888 0.096,-79.332 l 0.744,-0.984 c 20.109,-24.14 43.409,-45.233 65.126,-67.861 15.118,-15.382 30.571,-30.404 45.569,-45.881 17.565,-20.733 37.698,-39.042 56.607,-58.503 19.917,-20.781 41.25,-40.218 59.967,-62.151 29.156,-29.299 58.167,-58.815 87.515,-87.922 29.155,-33.043 61.502,-63.111 92.169,-94.738 13.726,-12.67 25.124,-27.571 38.634,-40.457 25.029,-25.365 50.129,-50.657 75.325,-75.853 -37.914,-51.208 -73.741,-103.952 -107.192,-158.183 -167.83,273.317 -397.235,507.305 -662.37,687.158 -81.875,55.335 -167.23,105.584 -255.681,149.641 -52.815,26.276 -106.831,50.248 -162.239,70.381 99.393,233.628 242.795,446.715 410.289,636.79 93.562,106.088 194.634,205.433 301.466,298.13 C -217.335,-155.808 -111.439,-73.789 0,0" />
+					</g>
+                    <g transform="translate(1201.7948,1741.5303)" id="g24">
+						<path id="path26" style="fill:#5693ce;fill-opacity:1;fill-rule:nonzero;stroke:none" d="M 0,0 C 105.008,99.609 216.543,192.45 334.485,276.39 451.659,192.81 562.833,100.76 667.146,1.608 c -34.987,8.83 -71.51,9.718 -107.264,6.431 -41.202,-4.296 -82.907,-19.077 -112.543,-48.953 -33.019,-32.155 -49.456,-77.604 -55.311,-122.501 -28.124,27.908 -56.104,55.983 -84.035,84.083 -2.976,2.976 -6.839,4.823 -10.391,6.911 -19.029,26.348 -45.953,46.673 -76.62,57.495 C 187.555,-2.472 151.513,-0.12 116.166,0 Z" />
+					</g>
+                    <g transform="translate(919.3342,1429.7462)" id="g28">
+						<path id="path30" style="fill:#5693ce;fill-opacity:1;fill-rule:nonzero;stroke:none" d="m 0,0 c 62.894,81.156 130.156,159.072 202.385,232.092 0.048,-244.21 0.024,-488.421 0,-732.631 C 84.323,-409.785 -41.61,-329.325 -173.541,-260.264 -121.973,-169.51 -63.758,-82.619 0,0" />
+					</g>
+                    <g transform="translate(1649.134,1700.6166)" id="g32">
+						<path id="path34" style="fill:#feeeef;fill-opacity:1;fill-rule:nonzero;stroke:none" d="m 0,0 c 29.635,29.875 71.341,44.657 112.543,48.952 35.754,3.288 72.277,2.4 107.263,-6.431 39.066,-10.174 75.037,-33.474 97.377,-67.501 11.879,-17.661 20.181,-37.411 26.42,-57.687 10.871,-38.802 11.95,-79.356 11.446,-119.358 -44.345,-0.072 -88.69,0.048 -133.035,-0.072 -1.032,30.907 3.263,63.686 -10.175,92.626 -9.526,20.325 -32.107,31.243 -53.751,32.131 -21.453,1.44 -45.065,-4.32 -59.175,-21.597 -12.79,-15.861 -15.382,-37.002 -16.558,-56.655 -1.295,-29.132 3.696,-59.031 17.518,-84.923 16.821,-30.619 39.378,-57.783 64.526,-81.9 31.387,-32.634 67.501,-60.374 97.857,-94.041 27.332,-28.988 51.256,-61.479 68.005,-97.785 20.541,-41.13 26.972,-87.827 25.82,-133.372 -0.912,-32.107 -5.231,-64.406 -16.149,-94.737 -11.59,-31.699 -31.123,-61.047 -58.335,-81.371 -25.124,-19.125 -55.696,-29.852 -86.651,-34.771 -49.552,-6.743 -101.888,-4.847 -148.465,14.854 -35.227,14.829 -64.238,42.689 -81.708,76.548 -20.996,40.242 -27.115,86.339 -27.259,131.212 0.048,17.829 0,35.658 0.048,53.463 44.345,0.048 88.69,-0.023 133.059,0.048 1.728,-35.538 -4.055,-72.06 5.663,-106.807 5.783,-22.173 26.204,-37.794 48.185,-41.754 20.733,-3.431 43.577,-2.015 61.622,9.791 15.502,9.43 23.949,26.78 26.78,44.225 5.903,35.922 1.872,74.293 -15.381,106.688 -16.918,30.595 -39.474,57.711 -64.55,81.899 -33.187,34.099 -71.173,63.254 -102.585,99.081 -26.756,28.867 -49.408,61.646 -65.486,97.641 -24.572,52.48 -26.731,112.422 -20.18,169.102 C -49.456,-77.604 -33.019,-32.155 0,0" />
+					</g>
+                    <g transform="translate(1262.7214,1613.126)" id="g36">
+						<path id="path38" style="fill:#feeeef;fill-opacity:1;fill-rule:nonzero;stroke:none" d="m 0,0 v -301.13 c 23.204,0.024 46.409,-0.048 69.613,0.024 18.525,0.288 38.202,6.575 50.153,21.429 12.43,17.277 13.917,39.522 14.613,60.111 0.024,43.985 -0.048,87.994 0.024,131.979 -0.48,23.637 -0.983,50.369 -17.277,69.23 C 104.864,-5.711 86.867,-0.24 69.589,0 46.385,0.048 23.204,0.024 0,0 m -141.002,128.38 c 26.708,0.048 53.392,0 80.075,0.024 H 55.24 c 35.346,-0.12 71.389,-2.471 104.815,-14.925 30.668,-10.823 57.592,-31.148 76.621,-57.496 26.852,-39.09 36.69,-87.202 38.058,-133.947 0.024,-48.833 0.096,-97.689 -0.024,-146.521 -1.728,-47.993 -11.974,-97.953 -41.514,-136.971 -22.748,-30.644 -57.495,-50.801 -94.281,-59.583 -45.377,-11.878 -92.578,-6.791 -138.891,-7.847 -0.072,-111.799 0,-223.574 -0.024,-335.373 -13.942,0 -27.86,0.024 -41.778,-0.024 -32.802,0.072 -65.605,0 -98.384,0.048 l -0.744,0.984 c -0.216,26.444 0,52.888 -0.096,79.332 0.024,244.211 0.048,488.421 0,732.632 0.048,26.563 0.024,53.103 0,79.667" />
+					</g>
+                    <g transform="translate(1966.3174,1675.6364)" id="g40">
+						<path id="path42" style="fill:#2a3746;fill-opacity:1;fill-rule:nonzero;stroke:none" d="m 0,0 c 7.031,-0.552 11.206,-6.839 15.885,-11.326 25.029,-26.9 52.768,-51.208 76.693,-79.164 27.667,-27.5 54.903,-55.456 82.571,-82.979 13.246,-13.942 27.764,-26.66 39.93,-41.658 18.813,-19.653 38.49,-38.514 57.519,-57.999 23.9,-24.812 49.337,-48.185 71.965,-74.197 36.427,-36.378 72.589,-73.02 108.943,-109.471 18.358,-21.524 39.234,-40.722 58.959,-60.974 22.605,-22.941 45.473,-45.665 68.03,-68.678 10.774,-13.294 23.78,-24.524 34.914,-37.506 -103.904,-41.97 -203.488,-94.114 -298.922,-152.761 -246.994,-152.28 -466.224,-350.298 -639.333,-583.398 -25.197,25.196 -50.297,50.488 -75.325,75.852 -13.51,12.886 -24.908,27.788 -38.634,40.458 -30.667,31.627 -63.014,61.695 -92.17,94.738 -29.347,29.107 -58.359,58.623 -87.514,87.922 -18.717,21.933 -40.05,41.37 -59.967,62.151 -18.909,19.461 -39.042,37.77 -56.607,58.503 -14.998,15.477 -30.452,30.499 -45.569,45.88 -21.717,22.629 -45.017,43.722 -65.126,67.862 32.779,-0.048 65.582,0.024 98.384,-0.048 114.391,-98.097 220.407,-205.984 315.384,-322.99 92.914,114.318 196.242,220.022 307.753,316.271 30.955,4.919 61.526,15.646 86.65,34.771 27.212,20.325 46.745,49.672 58.335,81.371 107.312,77.988 219.327,149.929 337.509,210.376 -35.299,64.67 -75.829,126.437 -118.254,186.643 C 176.253,-228.037 104.24,-140.115 26.42,-57.687 20.181,-37.41 11.878,-17.661 0,0" />
+					</g>
+                    <g transform="translate(1499.3971,1669.1094)" id="g44">
+						<path id="path46" style="fill:#3378bc;fill-opacity:1;fill-rule:nonzero;stroke:none" d="m 0,0 c 3.551,-2.088 7.415,-3.935 10.39,-6.911 27.932,-28.1 55.912,-56.175 84.036,-84.083 -6.551,-56.679 -4.392,-116.622 20.18,-169.102 16.078,-35.994 38.73,-68.774 65.486,-97.641 31.412,-35.826 69.398,-64.982 102.585,-99.081 25.076,-24.188 47.632,-51.304 64.55,-81.899 17.253,-32.395 21.284,-70.765 15.381,-106.688 -2.831,-17.445 -11.278,-34.794 -26.78,-44.225 -18.045,-11.806 -40.889,-13.222 -61.622,-9.79 -21.981,3.959 -42.402,19.58 -48.185,41.753 -9.718,34.747 -3.935,71.269 -5.663,106.808 -44.369,-0.072 -88.714,0 -133.059,-0.048 -0.048,-17.806 0,-35.635 -0.048,-53.464 0.144,-44.873 6.263,-90.97 27.259,-131.212 17.47,-33.859 46.481,-61.718 81.708,-76.548 46.577,-19.701 98.913,-21.597 148.465,-14.854 -111.511,-96.249 -214.839,-201.953 -307.753,-316.271 -94.977,117.006 -200.993,224.893 -315.383,322.99 13.918,0.048 27.836,0.024 41.777,0.024 0.024,111.799 -0.048,223.574 0.024,335.372 46.313,1.056 93.514,-4.031 138.891,7.847 36.786,8.783 71.533,28.94 94.282,59.583 29.539,39.018 39.785,88.978 41.513,136.971 0.12,48.833 0.048,97.689 0.024,146.522 C 36.69,-87.203 26.852,-39.09 0,0" />
+					</g>
+                    <g transform="translate(1748.0469,1601.6797)" id="g48">
+						<path id="path50" style="fill:#3378bc;fill-opacity:1;fill-rule:nonzero;stroke:none" d="M 0,0 C 14.11,17.277 37.722,23.036 59.175,21.597 80.82,20.709 103.4,9.791 112.927,-10.534 c 13.438,-28.94 9.142,-61.719 10.174,-92.626 44.345,0.12 88.691,0 133.036,0.072 0.504,40.002 -0.576,80.556 -11.447,119.358 77.82,-82.428 149.833,-170.35 215.583,-262.664 42.426,-60.207 82.956,-121.973 118.254,-186.643 -118.182,-60.447 -230.196,-132.388 -337.508,-210.376 10.918,30.331 15.238,62.63 16.149,94.737 1.152,45.545 -5.279,92.242 -25.82,133.372 -16.749,36.306 -40.673,68.797 -68.005,97.785 -30.355,33.667 -66.47,61.406 -97.857,94.041 -25.148,24.117 -47.705,51.28 -64.526,81.9 -13.822,25.892 -18.813,55.791 -17.517,84.923 C -15.382,-37.002 -12.79,-15.862 0,0" />
+					</g>
+                    <g transform="translate(1262.7214,1613.126)" id="g52">
+						<path id="path54" style="fill:#3378bc;fill-opacity:1;fill-rule:nonzero;stroke:none" d="m 0,0 c 23.204,0.024 46.385,0.048 69.589,0 17.278,-0.24 35.275,-5.711 47.537,-18.357 16.294,-18.861 16.797,-45.593 17.277,-69.23 -0.072,-43.985 0,-87.994 -0.024,-131.979 -0.696,-20.589 -2.183,-42.834 -14.613,-60.111 -11.951,-14.854 -31.628,-21.141 -50.153,-21.429 -23.204,-0.072 -46.409,0 -69.613,-0.024 z" />
+					</g>
+				</g>
+			</g>
+		</g>
+	</svg>

.whitesource

@@ -1,13 +0,0 @@
-{
-  "scanSettings": {
-    "baseBranches": ["v6"]
-  },
-  "checkRunSettings": {
-    "vulnerableCheckRunConclusionLevel": "success",
-    "displayMode": "diff"
-  },
-  "issueSettings": {
-    "minSeverityLevel": "LOW"
-  },
-  "enableRenovate": "true"
-}

Bukkit/build.gradle.kts

@@ -83,7 +83,7 @@ tasks.named<ShadowJar>("shadowJar") {
     relocate("org.jetbrains", "com.plotsquared.core.annotations")
     relocate("org.intellij.lang", "com.plotsquared.core.intellij.annotations")
     relocate("javax.annotation", "com.plotsquared.core.annotation")
-    relocate("com.google.code.findbugs", "com.plotsquared.core.findbugs")
+    relocate("com.github.spotbugs", "com.plotsquared.core.spotbugs")
     relocate("javax.inject", "com.plotsquared.core.annotation.inject")
 
     // Get rid of all the libs which are 100% unused.

Bukkit/src/main/java/com/plotsquared/bukkit/BukkitPlatform.java

@@ -238,6 +238,16 @@ public final class BukkitPlatform extends JavaPlugin implements Listener, PlotPl
         return this.version;
     }
 
+    @Override
+    public int versionMinHeight() {
+        return serverVersion()[1] >= 18 ? -64 : 0;
+    }
+
+    @Override
+    public int versionMaxHeight() {
+        return serverVersion()[1] >= 18 ? 319 : 255;
+    }
+
     @Override
     public @NonNull String serverImplementation() {
         return Bukkit.getVersion();

Bukkit/src/main/java/com/plotsquared/bukkit/generator/BlockStatePopulator.java

@@ -65,7 +65,10 @@ final class BlockStatePopulator extends BlockPopulator {
             return;
         }
         final ChunkWrapper wrap = new ChunkWrapper(area.getWorldName(), source.getX(), source.getZ());
-        final ScopedQueueCoordinator chunk = this.queue.getForChunk(wrap.x, wrap.z);
+        final ScopedQueueCoordinator chunk = this.queue.getForChunk(wrap.x, wrap.z,
+                com.plotsquared.bukkit.util.BukkitWorld.getMinWorldHeight(world),
+                com.plotsquared.bukkit.util.BukkitWorld.getMaxWorldHeight(world) - 1
+        );
         if (this.plotGenerator.populateChunk(chunk, area)) {
             this.queue.enqueue();
         }

Bukkit/src/main/java/com/plotsquared/bukkit/generator/BukkitPlotGenerator.java

@@ -27,6 +27,7 @@ package com.plotsquared.bukkit.generator;
 
 import com.plotsquared.bukkit.queue.GenChunk;
 import com.plotsquared.bukkit.util.BukkitUtil;
+import com.plotsquared.bukkit.util.BukkitWorld;
 import com.plotsquared.core.PlotSquared;
 import com.plotsquared.core.generator.GeneratorWrapper;
 import com.plotsquared.core.generator.IndependentPlotGenerator;
@@ -159,12 +160,14 @@ public class BukkitPlotGenerator extends ChunkGenerator
             @NonNull BiomeGrid biome
     ) {
 
-        GenChunk result = new GenChunk();
+        int minY = BukkitWorld.getMinWorldHeight(world);
+        int maxY = BukkitWorld.getMaxWorldHeight(world);
+        GenChunk result = new GenChunk(minY, maxY);
         if (this.getPlotGenerator() instanceof SingleWorldGenerator) {
             if (result.getChunkData() != null) {
                 for (int chunkX = 0; chunkX < 16; chunkX++) {
                     for (int chunkZ = 0; chunkZ < 16; chunkZ++) {
-                        for (int y = 0; y < world.getMaxHeight(); y++) {
+                        for (int y = minY; y < maxY; y++) {
                             biome.setBiome(chunkX, y, chunkZ, Biome.PLAINS);
 
                         }

Bukkit/src/main/java/com/plotsquared/bukkit/listener/BlockEventListener.java

@@ -74,6 +74,7 @@ import org.bukkit.GameMode;
 import org.bukkit.Material;
 import org.bukkit.block.Block;
 import org.bukkit.block.BlockFace;
+import org.bukkit.block.BlockState;
 import org.bukkit.block.data.BlockData;
 import org.bukkit.entity.Entity;
 import org.bukkit.entity.Fireball;
@@ -92,6 +93,7 @@ import org.bukkit.event.block.BlockFormEvent;
 import org.bukkit.event.block.BlockFromToEvent;
 import org.bukkit.event.block.BlockGrowEvent;
 import org.bukkit.event.block.BlockIgniteEvent;
+import org.bukkit.event.block.BlockMultiPlaceEvent;
 import org.bukkit.event.block.BlockPhysicsEvent;
 import org.bukkit.event.block.BlockPistonExtendEvent;
 import org.bukkit.event.block.BlockPistonRetractEvent;
@@ -277,7 +279,7 @@ public class BlockEventListener implements Listener {
         BukkitPlayer pp = BukkitUtil.adapt(player);
         Plot plot = area.getPlot(location);
         if (plot != null) {
-            if ((location.getY() > area.getMaxBuildHeight() || location.getY() < area
+            if ((location.getY() >= area.getMaxBuildHeight() || location.getY() < area
                     .getMinBuildHeight()) && !Permissions
                     .hasPermission(pp, Permission.PERMISSION_ADMIN_BUILD_HEIGHT_LIMIT)) {
                 event.setCancelled(true);
@@ -352,7 +354,8 @@ public class BlockEventListener implements Listener {
         Plot plot = area.getPlot(location);
         if (plot != null) {
             BukkitPlayer plotPlayer = BukkitUtil.adapt(player);
-            if (event.getBlock().getY() == 0) {
+            // == rather than <= as we only care about the "ground level" not being destroyed
+            if (event.getBlock().getY() == area.getMinGenHeight()) {
                 if (!Permissions
                         .hasPermission(plotPlayer, Permission.PERMISSION_ADMIN_DESTROY_GROUNDLEVEL)) {
                     plotPlayer.sendMessage(
@@ -362,7 +365,7 @@ public class BlockEventListener implements Listener {
                     event.setCancelled(true);
                     return;
                 }
-            } else if ((location.getY() > area.getMaxBuildHeight() || location.getY() < area
+            } else if ((location.getY() >= area.getMaxBuildHeight() || location.getY() < area
                     .getMinBuildHeight()) && !Permissions
                     .hasPermission(plotPlayer, Permission.PERMISSION_ADMIN_BUILD_HEIGHT_LIMIT)) {
                 event.setCancelled(true);
@@ -647,7 +650,8 @@ public class BlockEventListener implements Listener {
                     event.getBlock().breakNaturally();
                 }
             }
-            if (location.getY() == 0) {
+            // == rather than <= as we only care about the "ground level" not being destroyed
+            if (location.getY() == area.getMinGenHeight()) {
                 event.setCancelled(true);
                 return;
             }
@@ -1208,4 +1212,51 @@ public class BlockEventListener implements Listener {
         }
     }
 
+    /*
+     * BlockMultiPlaceEvent is called unrelated to the BlockPlaceEvent itself and therefore doesn't respect the cancellation.
+     */
+    @EventHandler(ignoreCancelled = true, priority = EventPriority.HIGHEST)
+    public void onBlockMultiPlace(BlockMultiPlaceEvent event) {
+        // Check if the generic block place event would be cancelled
+        blockCreate(event);
+        if (event.isCancelled()) {
+            return;
+        }
+
+        BukkitPlayer pp = BukkitUtil.adapt(event.getPlayer());
+        Location placedLocation = BukkitUtil.adapt(event.getBlockReplacedState().getLocation());
+        PlotArea area = placedLocation.getPlotArea();
+        if (area == null) {
+            return;
+        }
+        Plot plot = placedLocation.getPlot();
+
+        for (final BlockState state : event.getReplacedBlockStates()) {
+            Location currentLocation = BukkitUtil.adapt(state.getLocation());
+            if (!Permissions.hasPermission(
+                    pp,
+                    Permission.PERMISSION_ADMIN_BUILD_ROAD
+            ) && !(Objects.equals(currentLocation.getPlot(), plot))) {
+                pp.sendMessage(
+                        TranslatableCaption.of("permission.no_permission_event"),
+                        Template.of("node", String.valueOf(Permission.PERMISSION_ADMIN_BUILD_ROAD))
+                );
+                event.setCancelled(true);
+                break;
+            }
+            if (Permissions.hasPermission(pp, Permission.PERMISSION_ADMIN_BUILD_HEIGHT_LIMIT)) {
+                continue;
+            }
+            if (currentLocation.getY() >= area.getMaxBuildHeight() || currentLocation.getY() < area.getMinBuildHeight()) {
+                pp.sendMessage(
+                        TranslatableCaption.of("height.height_limit"),
+                        Template.of("minHeight", String.valueOf(area.getMinBuildHeight())),
+                        Template.of("maxHeight", String.valueOf(area.getMaxBuildHeight()))
+                );
+                event.setCancelled(true);
+                break;
+            }
+        }
+    }
+
 }

Bukkit/src/main/java/com/plotsquared/bukkit/listener/EntitySpawnListener.java

@@ -36,6 +36,7 @@ import com.plotsquared.core.plot.flag.implementations.DoneFlag;
 import io.papermc.lib.PaperLib;
 import org.bukkit.Chunk;
 import org.bukkit.World;
+import org.bukkit.block.Block;
 import org.bukkit.entity.ArmorStand;
 import org.bukkit.entity.Entity;
 import org.bukkit.entity.EntityType;
@@ -191,8 +192,32 @@ public class EntitySpawnListener implements Listener {
 
     @EventHandler
     public void onTeleport(EntityTeleportEvent event) {
-        Entity ent = event.getEntity();
-        if (ent instanceof Vehicle || ent instanceof ArmorStand) {
+        Entity entity = event.getEntity();
+        Entity fromLocation = event.getEntity();
+        Block toLocation = event.getTo().getBlock();
+        final Location fromLocLocation = BukkitUtil.adapt(fromLocation.getLocation());
+        final PlotArea fromArea = fromLocLocation.getPlotArea();
+        Location toLocLocation = BukkitUtil.adapt(toLocation.getLocation());
+        PlotArea toArea = toLocLocation.getPlotArea();
+
+        if (toArea == null) {
+            if (fromLocation.getType() == EntityType.SHULKER && fromArea != null) {
+                event.setCancelled(true);
+            }
+            return;
+        }
+        Plot toPlot = toArea.getOwnedPlot(toLocLocation);
+        if (fromLocation.getType() == EntityType.SHULKER && fromArea != null) {
+            final Plot fromPlot = fromArea.getOwnedPlot(fromLocLocation);
+
+            if (fromPlot != null || toPlot != null) {
+                if ((fromPlot == null || !fromPlot.equals(toPlot)) && (toPlot == null || !toPlot.equals(fromPlot))) {
+                    event.setCancelled(true);
+                    return;
+                }
+            }
+        }
+        if (entity instanceof Vehicle || entity instanceof ArmorStand) {
             testNether(event.getEntity());
         }
     }

Bukkit/src/main/java/com/plotsquared/bukkit/listener/PlayerEventListener.java

@@ -76,7 +76,6 @@ import com.plotsquared.core.util.EventDispatcher;
 import com.plotsquared.core.util.MathMan;
 import com.plotsquared.core.util.Permissions;
 import com.plotsquared.core.util.PremiumVerification;
-import com.plotsquared.core.util.RegExUtil;
 import com.plotsquared.core.util.entity.EntityCategories;
 import com.plotsquared.core.util.task.TaskManager;
 import com.plotsquared.core.util.task.TaskTime;
@@ -223,10 +222,9 @@ public class PlayerEventListener extends PlotListener implements Listener {
         }
     }
 
-    @SuppressWarnings("StringSplitter")
     @EventHandler(ignoreCancelled = true, priority = EventPriority.HIGHEST)
     public void playerCommand(PlayerCommandPreprocessEvent event) {
-        String msg = event.getMessage().toLowerCase().replaceAll("/", "").trim();
+        String msg = event.getMessage().replace("/", "").toLowerCase(Locale.ROOT).trim();
         if (msg.isEmpty()) {
             return;
         }
@@ -240,11 +238,9 @@ public class PlayerEventListener extends PlotListener implements Listener {
         String[] parts = msg.split(" ");
         Plot plot = plotPlayer.getCurrentPlot();
         // Check WorldEdit
-        switch (parts[0].toLowerCase()) {
+        switch (parts[0]) {
             case "up":
-            case "/up":
             case "worldedit:up":
-            case "worldedit:/up":
                 if (plot == null || (!plot.isAdded(plotPlayer.getUUID()) && !Permissions
                         .hasPermission(plotPlayer, Permission.PERMISSION_ADMIN_BUILD_OTHER, true))) {
                     event.setCancelled(true);
@@ -258,63 +254,67 @@ public class PlayerEventListener extends PlotListener implements Listener {
         List<String> blockedCommands = plot != null ?
                 plot.getFlag(BlockedCmdsFlag.class) :
                 area.getFlag(BlockedCmdsFlag.class);
-        if (!blockedCommands.isEmpty() && !Permissions
-                .hasPermission(plotPlayer, Permission.PERMISSION_ADMIN_INTERACT_BLOCKED_CMDS)) {
-            String part = parts[0];
-            if (parts[0].contains(":")) {
-                part = parts[0].split(":")[1];
-                msg = msg.replace(parts[0].split(":")[0] + ':', "");
-            }
-            String s1 = part;
-            List<String> aliases = new ArrayList<>();
-            for (HelpTopic cmdLabel : Bukkit.getServer().getHelpMap().getHelpTopics()) {
-                if (part.equals(cmdLabel.getName())) {
-                    break;
-                }
-                String label = cmdLabel.getName().replaceFirst("/", "");
-                if (aliases.contains(label)) {
-                    continue;
-                }
-                PluginCommand p;
-                if ((p = Bukkit.getPluginCommand(label)) != null) {
-                    for (String a : p.getAliases()) {
-                        if (aliases.contains(a)) {
-                            continue;
-                        }
-                        aliases.add(a);
-                        a = a.replaceFirst("/", "");
-                        if (!a.equals(label) && a.equals(part)) {
-                            part = label;
-                            break;
-                        }
-                    }
-                }
-            }
-            if (!s1.equals(part)) {
-                msg = msg.replace(s1, part);
-            }
-            for (String s : blockedCommands) {
-                Pattern pattern;
-                if (!RegExUtil.compiledPatterns.containsKey(s)) {
-                    RegExUtil.compiledPatterns.put(s, pattern = Pattern.compile(s));
+        if (blockedCommands.isEmpty()) {
+            return;
+        }
+        if (Permissions.hasPermission(plotPlayer, Permission.PERMISSION_ADMIN_INTERACT_BLOCKED_CMDS)) {
+            return;
+        }
+        // When using namespaced commands, we're not interested in the namespace
+        String part = parts[0];
+        if (part.contains(":")) {
+            String[] namespaced = part.split(":");
+            part = namespaced[1];
+            msg = msg.substring(namespaced[0].length() + 1);
+        }
+        msg = replaceAliases(msg, part);
+        for (String blocked : blockedCommands) {
+            if (blocked.equalsIgnoreCase(msg)) {
+                String perm;
+                if (plot != null && plot.isAdded(plotPlayer.getUUID())) {
+                    perm = "plots.admin.command.blocked-cmds.shared";
                 } else {
-                    pattern = RegExUtil.compiledPatterns.get(s);
+                    perm = "plots.admin.command.blocked-cmds.road";
                 }
-                if (pattern.matcher(msg).matches()) {
-                    String perm;
-                    if (plot != null && plot.isAdded(plotPlayer.getUUID())) {
-                        perm = "plots.admin.command.blocked-cmds.shared";
-                    } else {
-                        perm = "plots.admin.command.blocked-cmds.road";
+                if (!Permissions.hasPermission(plotPlayer, perm)) {
+                    plotPlayer.sendMessage(TranslatableCaption.of("blockedcmds.command_blocked"));
+                    event.setCancelled(true);
+                }
+                return;
+            }
+        }
+    }
+
+    private String replaceAliases(String msg, String part) {
+        String s1 = part;
+        Set<String> aliases = new HashSet<>();
+        for (HelpTopic cmdLabel : Bukkit.getServer().getHelpMap().getHelpTopics()) {
+            if (part.equals(cmdLabel.getName())) {
+                break;
+            }
+            String label = cmdLabel.getName().replaceFirst("/", "");
+            if (aliases.contains(label)) {
+                continue;
+            }
+            PluginCommand p = Bukkit.getPluginCommand(label);
+            if (p != null) {
+                for (String a : p.getAliases()) {
+                    if (aliases.contains(a)) {
+                        continue;
                     }
-                    if (!Permissions.hasPermission(plotPlayer, perm)) {
-                        plotPlayer.sendMessage(TranslatableCaption.of("blockedcmds.command_blocked"));
-                        event.setCancelled(true);
+                    aliases.add(a);
+                    a = a.replaceFirst("/", "");
+                    if (!a.equals(label) && a.equals(part)) {
+                        part = label;
+                        break;
                     }
-                    return;
                 }
             }
         }
+        if (!s1.equals(part)) {
+            msg = msg.replace(s1, part);
+        }
+        return msg;
     }
 
     @EventHandler(priority = EventPriority.HIGHEST, ignoreCancelled = true)

Bukkit/src/main/java/com/plotsquared/bukkit/listener/SingleWorldListener.java

@@ -46,7 +46,7 @@ import static com.plotsquared.core.util.ReflectionUtils.getRefClass;
 public class SingleWorldListener implements Listener {
 
     private final Method methodGetHandleChunk;
-    private Field shouldSave;
+    private Field shouldSave = null;
 
     public SingleWorldListener() throws Exception {
         ReflectionUtils.RefClass classCraftChunk = getRefClass("{cb}.CraftChunk");
@@ -59,9 +59,12 @@ public class SingleWorldListener implements Listener {
                 } else {
                     this.shouldSave = classChunk.getField("s").getRealField();
                 }
-            } else {
+            } else if (PlotSquared.platform().serverVersion()[1] == 17) {
                 ReflectionUtils.RefClass classChunk = getRefClass("net.minecraft.world.level.chunk.Chunk");
                 this.shouldSave = classChunk.getField("r").getRealField();
+            } else if (PlotSquared.platform().serverVersion()[1] == 18) {
+                ReflectionUtils.RefClass classChunk = getRefClass("net.minecraft.world.level.chunk.IChunkAccess");
+                this.shouldSave = classChunk.getField("b").getRealField();
             }
         } catch (NoSuchFieldException e) {
             e.printStackTrace();

Bukkit/src/main/java/com/plotsquared/bukkit/queue/BukkitChunkCoordinator.java

@@ -74,8 +74,9 @@ public final class BukkitChunkCoordinator extends ChunkCoordinator {
     private final Consumer<Throwable> throwableConsumer;
     private final boolean unloadAfter;
     private final int totalSize;
-
     private final AtomicInteger expectedSize;
+    private final AtomicInteger loadingChunks = new AtomicInteger();
+
     private int batchSize;
     private PlotSquaredTask task;
     private boolean shouldCancel;
@@ -150,6 +151,13 @@ public final class BukkitChunkCoordinator extends ChunkCoordinator {
 
         Chunk chunk = this.availableChunks.poll();
         if (chunk == null) {
+            if (this.availableChunks.isEmpty()) {
+                if (this.requestedChunks.isEmpty() && loadingChunks.get() == 0) {
+                    finish();
+                } else {
+                    requestBatch();
+                }
+            }
             return;
         }
         long[] iterationTime = new long[2];
@@ -197,9 +205,11 @@ public final class BukkitChunkCoordinator extends ChunkCoordinator {
         BlockVector2 chunk;
         for (int i = 0; i < this.batchSize && (chunk = this.requestedChunks.poll()) != null; i++) {
             // This required PaperLib to be bumped to version 1.0.4 to mark the request as urgent
+            loadingChunks.incrementAndGet();
             PaperLib
                     .getChunkAtAsync(this.bukkitWorld, chunk.getX(), chunk.getZ(), true, true)
                     .whenComplete((chunkObject, throwable) -> {
+                        loadingChunks.decrementAndGet();
                         if (throwable != null) {
                             throwable.printStackTrace();
                             // We want one less because this couldn't be processed

Bukkit/src/main/java/com/plotsquared/bukkit/queue/BukkitQueueCoordinator.java

@@ -111,8 +111,8 @@ public class BukkitQueueCoordinator extends BasicQueueCoordinator {
     public boolean enqueue() {
         final Clipboard regenClipboard;
         if (isRegen()) {
-            BlockVector3 start = BlockVector3.at(getRegenStart()[0] << 4, 0, getRegenStart()[1] << 4);
-            BlockVector3 end = BlockVector3.at((getRegenEnd()[0] << 4) + 15, 255, (getRegenEnd()[1] << 4) + 15);
+            BlockVector3 start = BlockVector3.at(getRegenStart()[0] << 4, getMinY(), getRegenStart()[1] << 4);
+            BlockVector3 end = BlockVector3.at((getRegenEnd()[0] << 4) + 15, getMaxY(), (getRegenEnd()[1] << 4) + 15);
             Region region = new CuboidRegion(start, end);
             regenClipboard = new BlockArrayClipboard(region);
             regenClipboard.setOrigin(start);
@@ -134,7 +134,7 @@ public class BukkitQueueCoordinator extends BasicQueueCoordinator {
                 int sx = blockVector2.getX() << 4;
                 int sz = blockVector2.getZ() << 4;
                 if (isRegenChunk) {
-                    for (int layer = 0; layer < 16; layer++) {
+                    for (int layer = getMinLayer(); layer <= getMaxLayer(); layer++) {
                         for (int y = 0; y < 16; y++) {
                             for (int x = 0; x < 16; x++) {
                                 for (int z = 0; z < 16; z++) {
@@ -170,7 +170,7 @@ public class BukkitQueueCoordinator extends BasicQueueCoordinator {
                             int lx = ChunkUtil.getX(j);
                             int lz = ChunkUtil.getZ(j);
                             int x = sx + lx;
-                            int y = ChunkUtil.getY(layer, j);
+                            int y = ChunkUtil.getY(layer + localChunk.getMinSection(), j);
                             int z = sz + lz;
                             boolean edge = Settings.QUEUE.UPDATE_EDGES && isEdge(y >> 4, lx, y & 15, lz, blockVector2,
                                     localChunk
@@ -179,7 +179,7 @@ public class BukkitQueueCoordinator extends BasicQueueCoordinator {
                         }
                     }
                 }
-                for (int layer = 0; layer < localChunk.getBaseblocks().length; layer++) {
+                for (int layer = 0; layer < localChunk.getBiomes().length; layer++) {
                     BiomeType[] biomesLayer = localChunk.getBiomes()[layer];
                     if (biomesLayer == null) {
                         continue;
@@ -295,47 +295,48 @@ public class BukkitQueueCoordinator extends BasicQueueCoordinator {
     }
 
     private boolean isEdge(int layer, int x, int y, int z, BlockVector2 blockVector2, LocalChunk localChunk) {
-        if (layer == 0 || layer == localChunk.getBaseblocks().length - 1) {
+        int layerIndex = (layer - localChunk.getMinSection());
+        if (layer == localChunk.getMinSection() || layerIndex == localChunk.getBaseblocks().length - 1) {
             return false;
         }
         if (x == 0) {
             LocalChunk localChunkX = getBlockChunks().get(blockVector2.withX(blockVector2.getX() - 1));
-            if (localChunkX == null || localChunkX.getBaseblocks()[layer] == null ||
-                    localChunkX.getBaseblocks()[layer][ChunkUtil.getJ(15, y, z)] != null) {
+            if (localChunkX == null || localChunkX.getBaseblocks()[layerIndex] == null ||
+                    localChunkX.getBaseblocks()[layerIndex][ChunkUtil.getJ(15, y, z)] != null) {
                 return true;
             }
         } else if (x == 15) {
             LocalChunk localChunkX = getBlockChunks().get(blockVector2.withX(blockVector2.getX() + 1));
-            if (localChunkX == null || localChunkX.getBaseblocks()[layer] == null ||
-                    localChunkX.getBaseblocks()[layer][ChunkUtil.getJ(0, y, z)] != null) {
+            if (localChunkX == null || localChunkX.getBaseblocks()[layerIndex] == null ||
+                    localChunkX.getBaseblocks()[layerIndex][ChunkUtil.getJ(0, y, z)] != null) {
                 return true;
             }
         }
         if (z == 0) {
             LocalChunk localChunkZ = getBlockChunks().get(blockVector2.withZ(blockVector2.getZ() - 1));
-            if (localChunkZ == null || localChunkZ.getBaseblocks()[layer] == null ||
-                    localChunkZ.getBaseblocks()[layer][ChunkUtil.getJ(x, y, 15)] != null) {
+            if (localChunkZ == null || localChunkZ.getBaseblocks()[layerIndex] == null ||
+                    localChunkZ.getBaseblocks()[layerIndex][ChunkUtil.getJ(x, y, 15)] != null) {
                 return true;
             }
         } else if (z == 15) {
             LocalChunk localChunkZ = getBlockChunks().get(blockVector2.withZ(blockVector2.getZ() + 1));
-            if (localChunkZ == null || localChunkZ.getBaseblocks()[layer] == null ||
-                    localChunkZ.getBaseblocks()[layer][ChunkUtil.getJ(x, y, 0)] != null) {
+            if (localChunkZ == null || localChunkZ.getBaseblocks()[layerIndex] == null ||
+                    localChunkZ.getBaseblocks()[layerIndex][ChunkUtil.getJ(x, y, 0)] != null) {
                 return true;
             }
         }
         if (y == 0) {
-            if (localChunk.getBaseblocks()[layer - 1] == null ||
-                    localChunk.getBaseblocks()[layer][ChunkUtil.getJ(x, 15, z)] != null) {
+            if (localChunk.getBaseblocks()[layerIndex - 1] == null ||
+                    localChunk.getBaseblocks()[layerIndex][ChunkUtil.getJ(x, 15, z)] != null) {
                 return true;
             }
         } else if (y == 15) {
-            if (localChunk.getBaseblocks()[layer + 1] == null ||
-                    localChunk.getBaseblocks()[layer][ChunkUtil.getJ(x, 0, z)] != null) {
+            if (localChunk.getBaseblocks()[layerIndex + 1] == null ||
+                    localChunk.getBaseblocks()[layerIndex][ChunkUtil.getJ(x, 0, z)] != null) {
                 return true;
             }
         }
-        BaseBlock[] baseBlocks = localChunk.getBaseblocks()[layer];
+        BaseBlock[] baseBlocks = localChunk.getBaseblocks()[layerIndex];
         if (x > 0 && baseBlocks[ChunkUtil.getJ(x - 1, y, z)] == null) {
             return true;
         }

Bukkit/src/main/java/com/plotsquared/bukkit/queue/GenChunk.java

@@ -31,6 +31,7 @@ import com.plotsquared.bukkit.util.BukkitUtil;
 import com.plotsquared.core.location.ChunkWrapper;
 import com.plotsquared.core.location.Location;
 import com.plotsquared.core.queue.ScopedQueueCoordinator;
+import com.plotsquared.core.util.AnnotationHelper;
 import com.plotsquared.core.util.ChunkUtil;
 import com.plotsquared.core.util.PatternUtil;
 import com.sk89q.worldedit.bukkit.BukkitAdapter;
@@ -50,6 +51,7 @@ import org.checkerframework.checker.nullness.qual.Nullable;
 
 import java.util.Arrays;
 
+@AnnotationHelper.ApiDescription(info = "Internal use only. Subject to changes at any time.")
 public class GenChunk extends ScopedQueueCoordinator {
 
     public final Biome[] biomes;
@@ -61,8 +63,14 @@ public class GenChunk extends ScopedQueueCoordinator {
     public int chunkZ;
     private ChunkData chunkData = null;
 
-    public GenChunk() {
-        super(null, Location.at("", 0, 0, 0), Location.at("", 15, 255, 15));
+    /**
+     * @param minY minimum world Y, inclusive
+     * @param maxY maximum world Y, inclusive
+     *
+     * @since 6.6.0
+     */
+    public GenChunk(int minY, int maxY) {
+        super(null, Location.at("", 0, minY, 0), Location.at("", 15, maxY, 15));
         this.biomes = Biome.values();
     }
 
@@ -117,7 +125,7 @@ public class GenChunk extends ScopedQueueCoordinator {
             return;
         }
         Biome biome = BukkitAdapter.adapt(biomeType);
-        for (int y = 0; y < 256; y++) {
+        for (int y = getMin().getY(); y <= getMax().getY(); y++) {
             for (int x = 0; x < 16; x++) {
                 for (int z = 0; z < 16; z++) {
                     this.biomeGrid.setBiome(x, y, z, biome);
@@ -130,7 +138,7 @@ public class GenChunk extends ScopedQueueCoordinator {
     public void setCuboid(@NonNull Location pos1, @NonNull Location pos2, @NonNull BlockState block) {
         if (result != null && pos1.getX() == 0 && pos1.getZ() == 0 && pos2.getX() == 15 && pos2.getZ() == 15) {
             for (int y = pos1.getY(); y <= pos2.getY(); y++) {
-                int layer = y >> 4;
+                int layer = getLayerIndex(y);
                 BlockState[] data = result[layer];
                 if (data == null) {
                     result[layer] = data = new BlockState[4096];
@@ -164,7 +172,7 @@ public class GenChunk extends ScopedQueueCoordinator {
      */
     public boolean setBiome(int x, int z, @NonNull Biome biome) {
         if (this.biomeGrid != null) {
-            for (int y = 0; y < 256; y++) {
+            for (int y = getMin().getY(); y <= getMax().getY(); y++) {
                 this.setBiome(x, y, z, biome);
             }
             return true;
@@ -197,7 +205,7 @@ public class GenChunk extends ScopedQueueCoordinator {
     }
 
     private void storeCache(final int x, final int y, final int z, final @NonNull BlockState id) {
-        int i = y >> 4;
+        int i = getLayerIndex(y);
         BlockState[] v = this.result[i];
         if (v == null) {
             this.result[i] = v = new BlockState[4096];
@@ -219,7 +227,7 @@ public class GenChunk extends ScopedQueueCoordinator {
 
     @Override
     public @Nullable BlockState getBlock(int x, int y, int z) {
-        int i = y >> 4;
+        int i = getLayerIndex(y);
         if (result == null) {
             return BukkitBlockUtil.get(chunkData.getType(x, y, z));
         }
@@ -246,16 +254,16 @@ public class GenChunk extends ScopedQueueCoordinator {
 
     @Override
     public @NonNull Location getMax() {
-        return Location.at(getWorld().getName(), 15 + (getX() << 4), 255, 15 + (getZ() << 4));
+        return Location.at(getWorld().getName(), 15 + (getX() << 4), super.getMax().getY(), 15 + (getZ() << 4));
     }
 
     @Override
     public @NonNull Location getMin() {
-        return Location.at(getWorld().getName(), getX() << 4, 0, getZ() << 4);
+        return Location.at(getWorld().getName(), getX() << 4, super.getMin().getY(), getZ() << 4);
     }
 
     public @NonNull GenChunk clone() {
-        GenChunk toReturn = new GenChunk();
+        GenChunk toReturn = new GenChunk(getMin().getY(), getMax().getY());
         if (this.result != null) {
             for (int i = 0; i < this.result.length; i++) {
                 BlockState[] matrix = this.result[i];
@@ -269,4 +277,8 @@ public class GenChunk extends ScopedQueueCoordinator {
         return toReturn;
     }
 
+    private int getLayerIndex(int y) {
+        return (y - getMin().getY()) >> 4;
+    }
+
 }

Bukkit/src/main/java/com/plotsquared/bukkit/util/BukkitInventoryUtil.java

@@ -42,6 +42,7 @@ import org.bukkit.inventory.InventoryView;
 import org.bukkit.inventory.ItemStack;
 import org.bukkit.inventory.PlayerInventory;
 import org.bukkit.inventory.meta.ItemMeta;
+import org.checkerframework.checker.nullness.qual.Nullable;
 
 import java.util.ArrayList;
 import java.util.List;
@@ -50,11 +51,15 @@ import java.util.stream.IntStream;
 @Singleton
 public class BukkitInventoryUtil extends InventoryUtil {
 
-    private static ItemStack getItem(PlotItemStack item) {
+    private static @Nullable ItemStack getItem(PlotItemStack item) {
         if (item == null) {
             return null;
         }
-        ItemStack stack = new ItemStack(BukkitAdapter.adapt(item.getType()), item.getAmount());
+        Material material = BukkitAdapter.adapt(item.getType());
+        if (material == null) {
+            return null;
+        }
+        ItemStack stack = new ItemStack(material, item.getAmount());
         ItemMeta meta = null;
         if (item.getName() != null) {
             meta = stack.getItemMeta();
@@ -104,14 +109,19 @@ public class BukkitInventoryUtil extends InventoryUtil {
     }
 
     @Override
-    public void setItem(PlotInventory inv, int index, PlotItemStack item) {
+    public boolean setItemChecked(PlotInventory inv, int index, PlotItemStack item) {
         BukkitPlayer bp = (BukkitPlayer) inv.getPlayer();
         InventoryView opened = bp.player.getOpenInventory();
-        if (!inv.isOpen()) {
-            return;
+        ItemStack stack = getItem(item);
+        if (stack == null) {
+            return false;
         }
-        opened.setItem(index, getItem(item));
+        if (!inv.isOpen()) {
+            return true;
+        }
+        opened.setItem(index, stack);
         bp.player.updateInventory();
+        return true;
     }
 
     @SuppressWarnings("deprecation") // Paper deprecation

Bukkit/src/main/java/com/plotsquared/bukkit/util/BukkitRegionManager.java

@@ -40,7 +40,6 @@ import com.plotsquared.core.queue.QueueCoordinator;
 import com.plotsquared.core.queue.ScopedQueueCoordinator;
 import com.plotsquared.core.util.ChunkManager;
 import com.plotsquared.core.util.RegionManager;
-import com.plotsquared.core.util.RegionUtil;
 import com.plotsquared.core.util.WorldUtil;
 import com.plotsquared.core.util.entity.EntityCategories;
 import com.plotsquared.core.util.task.RunnableVal;
@@ -261,7 +260,7 @@ public class BukkitRegionManager extends RegionManager {
             if (checkX2 && checkZ2) {
                 map.saveRegion(world, xxt2, xxt, zzt2, zzt); //
             }
-            CuboidRegion currentPlotClear = RegionUtil.createRegion(pos1.getX(), pos2.getX(), pos1.getZ(), pos2.getZ());
+            CuboidRegion currentPlotClear = new CuboidRegion(pos1.getBlockVector3(), pos2.getBlockVector3());
             map.saveEntitiesOut(Bukkit.getWorld(world.getName()).getChunkAt(x, z), currentPlotClear);
             AugmentedUtils.bypass(
                     ignoreAugment,
@@ -276,7 +275,9 @@ public class BukkitRegionManager extends RegionManager {
                                     PlotLoc plotLoc = new PlotLoc(bx + x1, bz + z1);
                                     BaseBlock[] ids = map.allBlocks.get(plotLoc);
                                     if (ids != null) {
-                                        for (int y = 0; y < Math.min(128, ids.length); y++) {
+                                        int minY = value.getMin().getY();
+                                        for (int yIndex = 0; yIndex < ids.length; yIndex++) {
+                                            int y = yIndex + minY;
                                             BaseBlock id = ids[y];
                                             if (id != null) {
                                                 value.setBlock(x1, y, z1, id);
@@ -284,12 +285,6 @@ public class BukkitRegionManager extends RegionManager {
                                                 value.setBlock(x1, y, z1, BlockTypes.AIR.getDefaultState());
                                             }
                                         }
-                                        for (int y = Math.min(128, ids.length); y < ids.length; y++) {
-                                            BaseBlock id = ids[y];
-                                            if (id != null) {
-                                                value.setBlock(x1, y, z1, id);
-                                            }
-                                        }
                                     }
                                 }
                             }
@@ -297,7 +292,7 @@ public class BukkitRegionManager extends RegionManager {
                     }, world.getName(), chunk)
             );
             //map.restoreBlocks(worldObj, 0, 0);
-            map.restoreEntities(Bukkit.getWorld(world.getName()), 0, 0);
+            map.restoreEntities(Bukkit.getWorld(world.getName()));
         });
         regenQueue.setCompleteTask(whenDone);
         queue.setCompleteTask(regenQueue::enqueue);

Bukkit/src/main/java/com/plotsquared/bukkit/util/BukkitUtil.java

@@ -44,7 +44,6 @@ import com.plotsquared.core.util.task.TaskManager;
 import com.sk89q.worldedit.bukkit.BukkitAdapter;
 import com.sk89q.worldedit.bukkit.BukkitWorld;
 import com.sk89q.worldedit.math.BlockVector2;
-import com.sk89q.worldedit.regions.CuboidRegion;
 import com.sk89q.worldedit.world.biome.BiomeType;
 import com.sk89q.worldedit.world.block.BlockCategories;
 import com.sk89q.worldedit.world.block.BlockState;
@@ -61,7 +60,6 @@ import org.bukkit.Bukkit;
 import org.bukkit.Chunk;
 import org.bukkit.Material;
 import org.bukkit.World;
-import org.bukkit.block.Biome;
 import org.bukkit.block.Block;
 import org.bukkit.block.BlockFace;
 import org.bukkit.block.Sign;
@@ -246,7 +244,9 @@ public class BukkitUtil extends WorldUtil {
             final World bukkitWorld = Objects.requireNonNull(getWorld(world));
             // Skip top and bottom block
             int air = 1;
-            for (int y = bukkitWorld.getMaxHeight() - 1; y >= 0; y--) {
+            int maxY = com.plotsquared.bukkit.util.BukkitWorld.getMaxWorldHeight(bukkitWorld);
+            int minY = com.plotsquared.bukkit.util.BukkitWorld.getMinWorldHeight(bukkitWorld);
+            for (int y = maxY - 1; y >= minY; y--) {
                 Block block = bukkitWorld.getBlockAt(x, y, z);
                 Material type = block.getType();
                 if (type.isSolid()) {
@@ -273,7 +273,9 @@ public class BukkitUtil extends WorldUtil {
         final World bukkitWorld = Objects.requireNonNull(getWorld(world));
         // Skip top and bottom block
         int air = 1;
-        for (int y = bukkitWorld.getMaxHeight() - 1; y >= 0; y--) {
+        int maxY = com.plotsquared.bukkit.util.BukkitWorld.getMaxWorldHeight(bukkitWorld);
+        int minY = com.plotsquared.bukkit.util.BukkitWorld.getMinWorldHeight(bukkitWorld);
+        for (int y = maxY - 1; y >= minY; y--) {
             Block block = bukkitWorld.getBlockAt(x, y, z);
             Material type = block.getType();
             if (type.isSolid()) {
@@ -345,13 +347,15 @@ public class BukkitUtil extends WorldUtil {
             final Block block = world.getBlockAt(location.getX(), location.getY(), location.getZ());
             final Material type = block.getType();
             if (type != Material.LEGACY_SIGN && type != Material.LEGACY_WALL_SIGN) {
-                BlockFace facing = BlockFace.EAST;
-                if (world.getBlockAt(location.getX(), location.getY(), location.getZ() + 1).getType().isSolid()) {
-                    facing = BlockFace.NORTH;
-                } else if (world.getBlockAt(location.getX() + 1, location.getY(), location.getZ()).getType().isSolid()) {
-                    facing = BlockFace.WEST;
-                } else if (world.getBlockAt(location.getX(), location.getY(), location.getZ() - 1).getType().isSolid()) {
-                    facing = BlockFace.SOUTH;
+                BlockFace facing = BlockFace.NORTH;
+                if (!world.getBlockAt(location.getX(), location.getY(), location.getZ() + 1).getType().isSolid()) {
+                    if (world.getBlockAt(location.getX() - 1, location.getY(), location.getZ()).getType().isSolid()) {
+                        facing = BlockFace.EAST;
+                    } else if (world.getBlockAt(location.getX() + 1, location.getY(), location.getZ()).getType().isSolid()) {
+                        facing = BlockFace.WEST;
+                    } else if (world.getBlockAt(location.getX(), location.getY(), location.getZ() - 1).getType().isSolid()) {
+                        facing = BlockFace.SOUTH;
+                    }
                 }
                 if (PlotSquared.platform().serverVersion()[1] == 13) {
                     block.setType(Material.valueOf(area.legacySignMaterial()), false);
@@ -371,7 +375,7 @@ public class BukkitUtil extends WorldUtil {
                     sign.setLine(i, LEGACY_COMPONENT_SERIALIZER
                             .serialize(MINI_MESSAGE.parse(lines[i].getComponent(LocaleHolder.console()), replacements)));
                 }
-                sign.update(true);
+                sign.update(true, false);
             }
         });
     }
@@ -382,27 +386,6 @@ public class BukkitUtil extends WorldUtil {
         return new StringComparison<BlockState>().new ComparisonResult(1, state);
     }
 
-    @Override
-    public void setBiomes(
-            final @NonNull String worldName,
-            final @NonNull CuboidRegion region,
-            final @NonNull BiomeType biomeType
-    ) {
-        final World world = getWorld(worldName);
-        if (world == null) {
-            LOGGER.warn("An error occurred while setting the biome because the world was null", new RuntimeException());
-            return;
-        }
-        final Biome biome = BukkitAdapter.adapt(biomeType);
-        for (int x = region.getMinimumPoint().getX(); x <= region.getMaximumPoint().getX(); x++) {
-            for (int z = region.getMinimumPoint().getZ(); z <= region.getMaximumPoint().getZ(); z++) {
-                if (world.getBiome(x, z) != biome) {
-                    world.setBiome(x, z, biome);
-                }
-            }
-        }
-    }
-
     @Override
     public com.sk89q.worldedit.world.@NonNull World getWeWorld(final @NonNull String world) {
         return new BukkitWorld(Bukkit.getWorld(world));

Bukkit/src/main/java/com/plotsquared/bukkit/util/BukkitWorld.java

@@ -36,6 +36,18 @@ import java.util.Objects;
 public class BukkitWorld implements World<org.bukkit.World> {
 
     private static final Map<String, BukkitWorld> worldMap = Maps.newHashMap();
+    private static final boolean HAS_MIN_Y;
+
+    static {
+        boolean temp;
+        try {
+            org.bukkit.World.class.getMethod("getMinHeight");
+            temp = true;
+        } catch (NoSuchMethodException e) {
+            temp = false;
+        }
+        HAS_MIN_Y = temp;
+    }
 
     private final org.bukkit.World world;
 
@@ -73,6 +85,24 @@ public class BukkitWorld implements World<org.bukkit.World> {
         return bukkitWorld;
     }
 
+    /**
+     * Get the min world height from a Bukkit {@link org.bukkit.World}. Inclusive
+     *
+     * @since 6.6.0
+     */
+    public static int getMinWorldHeight(org.bukkit.World world) {
+        return HAS_MIN_Y ? world.getMinHeight() : 0;
+    }
+
+    /**
+     * Get the max world height from a Bukkit {@link org.bukkit.World}. Exclusive
+     *
+     * @since 6.6.0
+     */
+    public static int getMaxWorldHeight(org.bukkit.World world) {
+        return HAS_MIN_Y ? world.getMaxHeight() : 256;
+    }
+
     @Override
     public org.bukkit.World getPlatformWorld() {
         return this.world;
@@ -83,34 +113,41 @@ public class BukkitWorld implements World<org.bukkit.World> {
         return this.world.getName();
     }
 
+    @Override
+    public int getMinHeight() {
+        return getMinWorldHeight(world);
+    }
+
+    @Override
+    public int getMaxHeight() {
+        return getMaxWorldHeight(world) - 1;
+    }
+
+    @Override
     public boolean equals(final Object o) {
-        if (o == this) {
+        if (this == o) {
             return true;
         }
-        if (!(o instanceof final BukkitWorld other)) {
+        if (o == null || getClass() != o.getClass()) {
             return false;
         }
-        if (!other.canEqual(this)) {
-            return false;
-        }
-        if (!Objects.equals(this.world, other.world)) {
-            return false;
-        }
-        return true;
+        final BukkitWorld that = (BukkitWorld) o;
+        return world.equals(that.world);
     }
 
+    @Override
+    public int hashCode() {
+        return world.hashCode();
+    }
+
+    /**
+     * @deprecated This method is not meant to be invoked or overridden, with no replacement.
+     */
+    @Deprecated(forRemoval = true, since = "6.6.0")
     protected boolean canEqual(final Object other) {
         return other instanceof BukkitWorld;
     }
 
-    public int hashCode() {
-        final int PRIME = 59;
-        int result = 1;
-        final Object $world = this.world;
-        result = result * PRIME + ($world == null ? 43 : $world.hashCode());
-        return result;
-    }
-
     public String toString() {
         return "BukkitWorld(world=" + this.world + ")";
     }

Bukkit/src/main/java/com/plotsquared/bukkit/util/ContentMap.java

@@ -70,7 +70,7 @@ public class ContentMap {
         }
         for (int x = x1; x <= x2; x++) {
             for (int z = z1; z <= z2; z++) {
-                saveBlocks(world, 256, x, z, 0, 0);
+                saveBlocks(world, x, z);
             }
         }
     }
@@ -92,14 +92,7 @@ public class ContentMap {
         }
     }
 
-    void saveEntitiesIn(Chunk chunk, CuboidRegion region) {
-        saveEntitiesIn(chunk, region, 0, 0, false);
-    }
-
-    void saveEntitiesIn(
-            Chunk chunk, CuboidRegion region, int offsetX, int offsetZ,
-            boolean delete
-    ) {
+    void saveEntitiesIn(Chunk chunk, CuboidRegion region, boolean delete) {
         for (Entity entity : chunk.getEntities()) {
             Location location = BukkitUtil.adapt(entity.getLocation());
             int x = location.getX();
@@ -111,8 +104,6 @@ public class ContentMap {
                 continue;
             }
             EntityWrapper wrap = new ReplicatingEntityWrapper(entity, (short) 2);
-            wrap.x += offsetX;
-            wrap.z += offsetZ;
             wrap.saveEntity();
             this.entities.add(wrap);
             if (delete) {
@@ -123,10 +114,10 @@ public class ContentMap {
         }
     }
 
-    void restoreEntities(World world, int xOffset, int zOffset) {
+    void restoreEntities(World world) {
         for (EntityWrapper entity : this.entities) {
             try {
-                entity.spawn(world, xOffset, zOffset);
+                entity.spawn(world, 0, 0);
             } catch (Exception e) {
                 LOGGER.error("Failed to restore entity", e);
             }
@@ -134,15 +125,13 @@ public class ContentMap {
         this.entities.clear();
     }
 
-    //todo optimize maxY
-    void saveBlocks(BukkitWorld world, int maxY, int x, int z, int offsetX, int offsetZ) {
-        maxY = Math.min(255, maxY);
-        BaseBlock[] ids = new BaseBlock[maxY + 1];
-        for (short y = 0; y <= maxY; y++) {
-            BaseBlock block = world.getFullBlock(BlockVector3.at(x, y, z));
-            ids[y] = block;
+    private void saveBlocks(BukkitWorld world, int x, int z) {
+        BaseBlock[] ids = new BaseBlock[world.getMaxY() - world.getMinY() + 1];
+        for (short yIndex = 0; yIndex <= world.getMaxY() - world.getMinY(); yIndex++) {
+            BaseBlock block = world.getFullBlock(BlockVector3.at(x, yIndex + world.getMinY(), z));
+            ids[yIndex] = block;
         }
-        PlotLoc loc = new PlotLoc(x + offsetX, z + offsetZ);
+        PlotLoc loc = new PlotLoc(x, z);
         this.allBlocks.put(loc, ids);
     }
 

Bukkit/src/main/java/com/plotsquared/bukkit/util/fawe/FaweRegionManager.java

@@ -110,6 +110,11 @@ public class FaweRegionManager extends BukkitRegionManager {
         delegate.setBiome(region, extendBiome, biome, world, whenDone);
     }
 
+    @Override
+    public void setBiome(CuboidRegion region, int extendBiome, BiomeType biome, PlotArea area, Runnable whenDone) {
+        delegate.setBiome(region, extendBiome, biome, area.getWorldName(), whenDone);
+    }
+
     @Override
     public boolean copyRegion(
             final @NonNull Location pos1,

Bukkit/src/main/java/com/plotsquared/bukkit/util/fawe/FaweSchematicHandler.java

@@ -67,7 +67,7 @@ public class FaweSchematicHandler extends SchematicHandler {
             final PlotPlayer<?> actor,
             final RunnableVal<Boolean> whenDone
     ) {
-        delegate.paste(schematic, plot, xOffset, yOffset, zOffset, autoHeight, whenDone);
+        delegate.paste(schematic, plot, xOffset, yOffset, zOffset, autoHeight, actor, whenDone);
     }
 
     @Override

Core/build.gradle.kts

@@ -22,7 +22,7 @@ dependencies {
     api(libs.guiceassistedinject) {
         exclude("com.google.inject", "guice")
     }
-    api(libs.findbugs)
+    api(libs.spotbugs)
 
     // Plugins
     compileOnly(libs.worldeditCore) {

Core/src/main/java/com/plotsquared/core/PlotPlatform.java

@@ -98,6 +98,22 @@ public interface PlotPlatform<P> extends LocaleHolder {
      */
     int[] serverVersion();
 
+    /**
+     * Gets the default minimum world height for the version of Minecraft that the server is running.
+     *
+     * @return minimum world height
+     * @since 6.6.0
+     */
+    int versionMinHeight();
+
+    /**
+     * Gets the default maximum world height for the version of Minecraft that the server is running.
+     *
+     * @return maximum world height (inclusive)
+     * @since 6.6.0
+     */
+    int versionMaxHeight();
+
     /**
      * Gets the server implementation name and version
      *

Core/src/main/java/com/plotsquared/core/PlotSquared.java

@@ -1020,8 +1020,8 @@ public class PlotSquared {
             // save configuration
 
             final List<String> validArguments = Arrays
-                    .asList("s=", "size=", "g=", "gap=", "h=", "height=", "f=", "floor=", "m=", "main=",
-                            "w=", "wall=", "b=", "border="
+                    .asList("s=", "size=", "g=", "gap=", "h=", "height=", "minh=", "minheight=", "maxh=", "maxheight=",
+                            "f=", "floor=", "m=", "main=", "w=", "wall=", "b=", "border="
                     );
 
             // Calculate the number of expected arguments
@@ -1100,6 +1100,14 @@ public class PlotSquared {
                                     ConfigurationUtil.INTEGER.parseString(value).shortValue()
                             );
                         }
+                        case "minh", "minheight" -> this.worldConfiguration.set(
+                                base + "world.min_gen_height",
+                                ConfigurationUtil.INTEGER.parseString(value).shortValue()
+                        );
+                        case "maxh", "maxheight" -> this.worldConfiguration.set(
+                                base + "world.max_gen_height",
+                                ConfigurationUtil.INTEGER.parseString(value).shortValue()
+                        );
                         case "f", "floor" -> this.worldConfiguration.set(
                                 base + "plot.floor",
                                 ConfigurationUtil.BLOCK_BUCKET.parseString(value).toString()

Core/src/main/java/com/plotsquared/core/command/Area.java

@@ -75,6 +75,7 @@ import com.sk89q.worldedit.function.operation.Operations;
 import com.sk89q.worldedit.math.BlockVector3;
 import com.sk89q.worldedit.regions.CuboidRegion;
 import com.sk89q.worldedit.regions.Region;
+import com.sk89q.worldedit.world.World;
 import net.kyori.adventure.text.minimessage.Template;
 import org.checkerframework.checker.nullness.qual.NonNull;
 
@@ -191,11 +192,12 @@ public class Area extends SubCommand {
                 final BlockVector3 playerSelectionMin = playerSelectedRegion.getMinimumPoint();
                 final BlockVector3 playerSelectionMax = playerSelectedRegion.getMaximumPoint();
                 // Create a new selection that spans the entire vertical range of the world
+                World world = playerSelectedRegion.getWorld();
                 final CuboidRegion selectedRegion =
                         new CuboidRegion(
                                 playerSelectedRegion.getWorld(),
-                                BlockVector3.at(playerSelectionMin.getX(), 0, playerSelectionMin.getZ()),
-                                BlockVector3.at(playerSelectionMax.getX(), 255, playerSelectionMax.getZ())
+                                BlockVector3.at(playerSelectionMin.getX(), world.getMinY(), playerSelectionMin.getZ()),
+                                BlockVector3.at(playerSelectionMax.getX(), world.getMaxY(), playerSelectionMax.getZ())
                         );
                 // There's only one plot in the area...
                 final PlotId plotId = PlotId.of(1, 1);
@@ -278,9 +280,9 @@ public class Area extends SubCommand {
                     if (offsetZ != 0) {
                         this.worldConfiguration.set(path + ".road.offset.z", offsetZ);
                     }
-                    final String world = this.setupUtils.setupWorld(singleBuilder);
-                    if (this.worldUtil.isWorld(world)) {
-                        PlotSquared.get().loadWorld(world, null);
+                    final String worldName = this.setupUtils.setupWorld(singleBuilder);
+                    if (this.worldUtil.isWorld(worldName)) {
+                        PlotSquared.get().loadWorld(worldName, null);
                         player.sendMessage(TranslatableCaption.of("single.single_area_created"));
                     } else {
                         player.sendMessage(
@@ -369,7 +371,8 @@ public class Area extends SubCommand {
                                 int lower = (area.ROAD_WIDTH & 1) == 0 ? area.ROAD_WIDTH / 2 - 1 : area.ROAD_WIDTH / 2;
                                 final int offsetX = bx - (area.ROAD_WIDTH == 0 ? 0 : lower);
                                 final int offsetZ = bz - (area.ROAD_WIDTH == 0 ? 0 : lower);
-                                final CuboidRegion region = RegionUtil.createRegion(bx, tx, bz, tz);
+                                // Height doesn't matter for this region
+                                final CuboidRegion region = RegionUtil.createRegion(bx, tx, 0, 0, bz, tz);
                                 final Set<PlotArea> areas = this.plotAreaManager.getPlotAreasSet(area.getWorldName(), region);
                                 if (!areas.isEmpty()) {
                                     player.sendMessage(

Core/src/main/java/com/plotsquared/core/command/CommandCategory.java

@@ -28,6 +28,7 @@ package com.plotsquared.core.command;
 import com.plotsquared.core.configuration.caption.Caption;
 import com.plotsquared.core.configuration.caption.LocaleHolder;
 import com.plotsquared.core.configuration.caption.TranslatableCaption;
+import com.plotsquared.core.player.PlotPlayer;
 import org.checkerframework.checker.nullness.qual.NonNull;
 
 /**
@@ -95,4 +96,16 @@ public enum CommandCategory implements Caption {
     public String getComponent(@NonNull LocaleHolder localeHolder) {
         return this.caption.getComponent(localeHolder);
     }
+
+    /**
+     * Checks if a player has access to this command category
+     *
+     * @param player The player to check against
+     * @return {@code true} if at least one command of this category can be executed by the player, {@code false} otherwise
+     * @since 6.5.0
+     */
+    boolean canAccess(PlotPlayer<?> player) {
+        return !MainCommand.getInstance().getCommands(this, player).isEmpty();
+    }
+
 }

Core/src/main/java/com/plotsquared/core/command/Confirm.java

@@ -48,7 +48,7 @@ public class Confirm extends SubCommand {
             player.sendMessage(TranslatableCaption.of("confirm.expired_confirm"));
             return false;
         }
-        TaskManager.runTaskAsync(command.command);
+        TaskManager.runTask(command.command);
         return true;
     }
 

Core/src/main/java/com/plotsquared/core/command/DebugExec.java

@@ -49,6 +49,7 @@ import org.checkerframework.checker.nullness.qual.NonNull;
 import java.util.Arrays;
 import java.util.Collection;
 import java.util.HashSet;
+import java.util.LinkedHashSet;
 import java.util.List;
 import java.util.Locale;
 import java.util.stream.Collectors;
@@ -207,7 +208,7 @@ public class DebugExec extends SubCommand {
                     }
                     boolean result;
                     if (HybridUtils.regions != null) {
-                        result = this.hybridUtils.scheduleRoadUpdate(area, HybridUtils.regions, 0, new HashSet<>());
+                        result = this.hybridUtils.scheduleRoadUpdate(area, HybridUtils.regions, 0, new LinkedHashSet<>());
                     } else {
                         result = this.hybridUtils.scheduleRoadUpdate(area, 0);
                     }

Core/src/main/java/com/plotsquared/core/command/Help.java

@@ -37,11 +37,11 @@ import net.kyori.adventure.text.Component;
 import net.kyori.adventure.text.TextComponent;
 import net.kyori.adventure.text.minimessage.Template;
 
+import java.util.ArrayList;
 import java.util.Collection;
+import java.util.List;
 import java.util.Locale;
 import java.util.concurrent.CompletableFuture;
-import java.util.stream.Collectors;
-import java.util.stream.Stream;
 
 @CommandDeclaration(command = "help",
         aliases = "?",
@@ -119,6 +119,9 @@ public class Help extends Command {
                 TextComponent.Builder builder = Component.text();
                 builder.append(MINI_MESSAGE.parse(TranslatableCaption.of("help.help_header").getComponent(player)));
                 for (CommandCategory c : CommandCategory.values()) {
+                    if (!c.canAccess(player)) {
+                        continue;
+                    }
                     builder.append(Component.newline()).append(MINI_MESSAGE
                             .parse(
                                     TranslatableCaption.of("help.help_info_item").getComponent(player),
@@ -152,12 +155,26 @@ public class Help extends Command {
 
     @Override
     public Collection<Command> tab(PlotPlayer<?> player, String[] args, boolean space) {
-        return Stream.of("claiming", "teleport", "settings", "chat", "schematic", "appearance", "info", "debug",
-                        "administration", "all"
-                )
-                .filter(value -> value.startsWith(args[0].toLowerCase(Locale.ENGLISH)))
-                .map(value -> new Command(null, false, value, "", RequiredType.NONE, null) {
-                }).collect(Collectors.toList());
+        final String argument = args[0].toLowerCase(Locale.ENGLISH);
+        List<Command> result = new ArrayList<>();
+
+        for (final CommandCategory category : CommandCategory.values()) {
+            if (!category.canAccess(player)) {
+                continue;
+            }
+            String name = category.name().toLowerCase();
+            if (!name.startsWith(argument)) {
+                continue;
+            }
+            result.add(new Command(null, false, name, "", RequiredType.NONE, null) {
+            });
+        }
+        // add the category "all"
+        if ("all".startsWith(argument)) {
+            result.add(new Command(null, false, "all", "", RequiredType.NONE, null) {
+            });
+        }
+        return result;
     }
 
 }

Core/src/main/java/com/plotsquared/core/command/Load.java

@@ -40,6 +40,7 @@ import com.plotsquared.core.plot.schematic.Schematic;
 import com.plotsquared.core.plot.world.PlotAreaManager;
 import com.plotsquared.core.util.Permissions;
 import com.plotsquared.core.util.SchematicHandler;
+import com.plotsquared.core.util.TimeUtil;
 import com.plotsquared.core.util.task.RunnableVal;
 import com.plotsquared.core.util.task.TaskManager;
 import net.kyori.adventure.text.minimessage.Template;
@@ -205,7 +206,7 @@ public class Load extends SubCommand {
                     if (split.length < 5) {
                         continue;
                     }
-                    String time = secToTime((System.currentTimeMillis() / 1000) - Long.parseLong(split[0]));
+                    String time = TimeUtil.secToTime((System.currentTimeMillis() / 1000) - Long.parseLong(split[0]));
                     String world = split[1];
                     PlotId id = PlotId.fromString(split[2] + ';' + split[3]);
                     String size = split[4];
@@ -223,6 +224,10 @@ public class Load extends SubCommand {
         }
     }
 
+    /**
+     * @deprecated Use {@link TimeUtil#secToTime(long)}
+     */
+    @Deprecated(forRemoval = true, since = "6.6.2")
     public String secToTime(long time) {
         StringBuilder toreturn = new StringBuilder();
         if (time >= 33868800) {

Core/src/main/java/com/plotsquared/core/command/Music.java

@@ -41,6 +41,7 @@ import com.plotsquared.core.plot.flag.implementations.MusicFlag;
 import com.plotsquared.core.util.EventDispatcher;
 import com.plotsquared.core.util.InventoryUtil;
 import com.plotsquared.core.util.Permissions;
+import com.sk89q.worldedit.world.item.ItemType;
 import com.sk89q.worldedit.world.item.ItemTypes;
 import net.kyori.adventure.text.minimessage.Template;
 import org.checkerframework.checker.nullness.qual.NonNull;
@@ -148,8 +149,14 @@ public class Music extends SubCommand {
         for (final String disc : DISCS) {
             final String name = String.format("<gold>%s</gold>", disc);
             final String[] lore = {TranslatableCaption.of("plotjukebox.click_to_play").getComponent(player)};
-            final PlotItemStack item = new PlotItemStack(disc, 1, name, lore);
-            inv.setItem(index++, item);
+            ItemType type = ItemTypes.get(disc);
+            if (type == null) {
+                continue;
+            }
+            final PlotItemStack item = new PlotItemStack(type, 1, name, lore);
+            if (inv.setItemChecked(index, item)) {
+                index++;
+            }
         }
 
         // Always add the cancel button

Core/src/main/java/com/plotsquared/core/command/PluginCmd.java

@@ -51,7 +51,7 @@ public class PluginCmd extends SubCommand {
             player.sendMessage(StaticCaption.of(
                     "<gray>>> </gray><gold><bold>Authors<reset><gray>: </gray><gold>Citymonstret </gold><gray>& </gray><gold>Empire92 </gold><gray>& </gray><gold>MattBDev </gold><gray>& </gray><gold>dordsor21 </gold><gray>& </gray><gold>NotMyFault </gold><gray>& </gray><gold>SirYwell</gold>"));
             player.sendMessage(StaticCaption.of(
-                    "<gray>>> </gray><gold><bold>Wiki<reset><gray>: </gray><gold><click:open_url:https://github.com/IntellectualSites/PlotSquared-Documentation/wiki>https://github.com/IntellectualSites/PlotSquared-Documentation/wiki</gold>"));
+                    "<gray>>> </gray><gold><bold>Wiki<reset><gray>: </gray><gold><click:open_url:https://intellectualsites.github.io/plotsquared-documentation/>https://intellectualsites.github.io/plotsquared-documentation/</gold>"));
             player.sendMessage(StaticCaption.of(
                     "<gray>>> </gray><gold><bold>Discord<reset><gray>: </gray><gold><click:open_url:https://discord.gg/intellectualsites>https://discord.gg/intellectualsites</gold>"));
             player.sendMessage(

Core/src/main/java/com/plotsquared/core/command/Save.java

@@ -104,8 +104,8 @@ public class Save extends SubCommand {
                     TaskManager.runTaskAsync(() -> {
                         String time = (System.currentTimeMillis() / 1000) + "";
                         Location[] corners = plot.getCorners();
-                        corners[0] = corners[0].withY(0);
-                        corners[1] = corners[1].withY(255);
+                        corners[0] = corners[0].withY(plot.getArea().getMinBuildHeight());
+                        corners[1] = corners[1].withY(plot.getArea().getMaxBuildHeight());
                         int size = (corners[1].getX() - corners[0].getX()) + 1;
                         PlotId id = plot.getId();
                         String world1 = plot.getArea().toString().replaceAll(";", "-")

Core/src/main/java/com/plotsquared/core/command/SetHome.java

@@ -57,8 +57,12 @@ public class SetHome extends SetCommand {
                 Plot base = plot.getBasePlot(false);
                 Location bottom = base.getBottomAbs();
                 Location location = player.getLocationFull();
-                BlockLoc rel = new BlockLoc(location.getX() - bottom.getX(), location.getY(),
-                        location.getZ() - bottom.getZ(), location.getYaw(), location.getPitch()
+                BlockLoc rel = new BlockLoc(
+                        location.getX() - bottom.getX(),
+                        location.getY(), // y is absolute
+                        location.getZ() - bottom.getZ(),
+                        location.getYaw(),
+                        location.getPitch()
                 );
                 base.setHome(rel);
                 player.sendMessage(TranslatableCaption.of("position.position_set"));

Core/src/main/java/com/plotsquared/core/command/Trim.java

@@ -180,12 +180,12 @@ public class Trim extends SubCommand {
                             int bx = cbx << 4;
                             int bz = cbz << 4;
                             CuboidRegion region =
-                                    RegionUtil.createRegion(bx, bx + 511, bz, bz + 511);
+                                    RegionUtil.createRegion(bx, bx + 511, 0, 0, bz, bz + 511);
                             for (Plot plot : PlotQuery.newQuery().inWorld(world)) {
                                 Location bot = plot.getBottomAbs();
                                 Location top = plot.getExtendedTopAbs();
                                 CuboidRegion plotReg = RegionUtil
-                                        .createRegion(bot.getX(), top.getX(), bot.getZ(), top.getZ());
+                                        .createRegion(bot.getX(), top.getX(), 0, 0, bot.getZ(), top.getZ());
                                 if (!RegionUtil.intersects(region, plotReg)) {
                                     continue;
                                 }

Core/src/main/java/com/plotsquared/core/components/ComponentPresetManager.java

@@ -128,7 +128,7 @@ public class ComponentPresetManager {
                             0,
                             "",
                             "<rainbow:2>Disco Floor</rainbow>",
-                            Arrays.asList("<gold>Spice up your plot floor</gold>"),
+                            List.of("<gold>Spice up your plot floor</gold>"),
                             ItemTypes.YELLOW_WOOL
                     ));
             yamlConfiguration.set("presets", defaultPreset.stream().map(ComponentPreset::serialize).collect(Collectors.toList()));
@@ -181,6 +181,10 @@ public class ComponentPresetManager {
             }
             allowedPresets.add(componentPreset);
         }
+        if (allowedPresets.isEmpty()) {
+            player.sendMessage(TranslatableCaption.of("preset.empty"));
+            return null;
+        }
         final int size = (int) Math.ceil((double) allowedPresets.size() / 9.0D);
         final PlotInventory plotInventory = new PlotInventory(this.inventoryUtil, player, size,
                 TranslatableCaption.of("preset.title").getComponent(player)) {
@@ -210,7 +214,13 @@ public class ComponentPresetManager {
                     return false;
                 }
 
-                if (componentPreset.getCost() > 0.0D && econHandler.isEnabled(plot.getArea())) {
+                if (componentPreset.getCost() > 0.0D) {
+                    if (!econHandler.isEnabled(plot.getArea())) {
+                        getPlayer().sendMessage(
+                                TranslatableCaption.of("preset.economy_disabled"),
+                                Template.of("preset", componentPreset.getDisplayName()));
+                        return false;
+                    }
                     if (econHandler.getMoney(getPlayer()) < componentPreset.getCost()) {
                         getPlayer().sendMessage(TranslatableCaption.of("preset.preset_cannot_afford"));
                         return false;
@@ -246,11 +256,16 @@ public class ComponentPresetManager {
         for (int i = 0; i < allowedPresets.size(); i++) {
             final ComponentPreset preset = allowedPresets.get(i);
             final List<String> lore = new ArrayList<>();
-            if (preset.getCost() > 0 && this.econHandler.isEnabled(plot.getArea())) {
-                lore.add(MINI_MESSAGE.serialize(MINI_MESSAGE.parse(
-                        TranslatableCaption.of("preset.preset_lore_cost").getComponent(player),
-                        Template.of("cost", String.format("%.2f", preset.getCost()))
-                )));
+            if (preset.getCost() > 0) {
+                if (!this.econHandler.isEnabled(plot.getArea())) {
+                    lore.add(MINI_MESSAGE.serialize(MINI_MESSAGE.parse(
+                            TranslatableCaption.of("preset.preset_lore_economy_disabled").getComponent(player))));
+                } else {
+                    lore.add(MINI_MESSAGE.serialize(MINI_MESSAGE.parse(
+                            TranslatableCaption.of("preset.preset_lore_cost").getComponent(player),
+                            Template.of("cost", String.format("%.2f", preset.getCost()))
+                    )));
+                }
             }
             lore.add(MINI_MESSAGE.serialize(MINI_MESSAGE.parse(
                     TranslatableCaption.of("preset.preset_lore_component").getComponent(player),

Core/src/main/java/com/plotsquared/core/configuration/Settings.java

@@ -201,7 +201,7 @@ public class Settings extends Config {
         public List<String> WORLDS = new ArrayList<>(Collections.singletonList("*"));
 
 
-        @Comment("See: https://github.com/IntellectualSites/PlotSquared-Documentation/wiki/Plot-analysis for a description of each value.")
+        @Comment("See: https://intellectualsites.github.io/plotsquared-documentation/optimization/plot-analysis for a description of each value.")
         public static final class CALIBRATION {
 
             public int VARIETY = 0;
@@ -221,7 +221,7 @@ public class Settings extends Config {
 
 
     @Comment({"Chunk processor related settings",
-            "See https://github.com/IntellectualSites/PlotSquared-Documentation/wiki/Chunk-processor for more information."})
+            "See https://intellectualsites.github.io/plotsquared-documentation/optimization/chunk-processor for more information."})
     public static class Chunk_Processor {
 
         @Comment("Auto trim will not save chunks which aren't claimed")
@@ -284,7 +284,7 @@ public class Settings extends Config {
         @Comment("Always show explosion Particles, even if explosion flag is set to false")
         public static boolean ALWAYS_SHOW_EXPLOSIONS = false;
         @Comment({"Blocks that may not be used in plot components",
-                "Checkout the wiki article regarding plot components before modifying: https://github.com/IntellectualSites/PlotSquared-Documentation/wiki/Plot-Components"})
+                "Checkout the wiki article regarding plot components before modifying: https://intellectualsites.github.io/plotsquared-documentation/customization/plot-components"})
         public static List<String>
                 INVALID_BLOCKS = Arrays.asList(
                 // Acacia Stuff
@@ -406,7 +406,7 @@ public class Settings extends Config {
 
 
     @Comment({"Schematic Settings",
-            "See https://github.com/IntellectualSites/PlotSquared-Documentation/wiki/Schematic-on-Claim for more information."})
+            "See https://intellectualsites.github.io/plotsquared-documentation/schematics/schematic-on-claim for more information."})
     public static final class Schematics {
 
         @Comment(
@@ -535,7 +535,7 @@ public class Settings extends Config {
 
 
     @Comment({"Backup related settings",
-            "See https://github.com/IntellectualSites/PlotSquared-Documentation/wiki/Backups for more information."})
+            "See https://intellectualsites.github.io/plotsquared-documentation/plot-backups for more information."})
     public static final class Backup {
 
         @Comment("Automatically backup plots when destructive commands are performed, e.g. /plot clear")
@@ -784,7 +784,7 @@ public class Settings extends Config {
         public static boolean
                 PERSISTENT_ROAD_REGEN = true;
         @Comment({"Enable the `/plot component` preset GUI",
-                "Read more about components here: https://github.com/IntellectualSites/PlotSquared-Documentation/wiki/Plot-Components"})
+                "Read more about components here: https://intellectualsites.github.io/plotsquared-documentation/customization/plot-components"})
         public static boolean COMPONENT_PRESETS = true;
         @Comment("Enable per user locale")
         public static boolean PER_USER_LOCALE = false;

Core/src/main/java/com/plotsquared/core/generator/AugmentedUtils.java

@@ -70,7 +70,7 @@ public class AugmentedUtils {
         final int blockZ = chunkZ << 4;
         // Create a region that contains the
         // entire chunk
-        CuboidRegion region = RegionUtil.createRegion(blockX, blockX + 15, blockZ, blockZ + 15);
+        CuboidRegion region = RegionUtil.createRegion(blockX, blockX + 15, 0, 0, blockZ, blockZ + 15);
         // Query for plot areas in the chunk
         final Set<PlotArea> areas = PlotSquared.get().getPlotAreaManager().getPlotAreasSet(world, region);
         if (areas.isEmpty()) {
@@ -122,6 +122,7 @@ public class AugmentedUtils {
             }
             QueueCoordinator secondaryMask;
             BlockState air = BlockTypes.AIR.getDefaultState();
+            int startYOffset = !(area instanceof ClassicPlotWorld) || ((ClassicPlotWorld) area).PLOT_BEDROCK ? 1 : 0;
             if (area.getTerrain() == PlotAreaTerrainType.ROAD) {
                 PlotManager manager = area.getPlotManager();
                 final boolean[][] canPlace = new boolean[16][16];
@@ -132,7 +133,7 @@ public class AugmentedUtils {
                         int worldZ = z + blockZ;
                         boolean can = manager.getPlotId(worldX, 0, worldZ) == null;
                         if (can) {
-                            for (int y = 1; y < 128; y++) {
+                            for (int y = area.getMinGenHeight() + startYOffset; y <= area.getMaxGenHeight(); y++) {
                                 queue.setBlock(worldX, y, worldZ, air);
                             }
                             canPlace[x][z] = true;
@@ -149,7 +150,7 @@ public class AugmentedUtils {
                 secondaryMask = primaryMask;
                 for (int x = relativeBottomX; x <= relativeTopX; x++) {
                     for (int z = relativeBottomZ; z <= relativeTopZ; z++) {
-                        for (int y = 1; y < 128; y++) {
+                        for (int y = area.getMinGenHeight() + startYOffset; y <= area.getMaxGenHeight(); y++) {
                             queue.setBlock(blockX + x, y, blockZ + z, air);
                         }
                     }
@@ -166,8 +167,8 @@ public class AugmentedUtils {
             ScopedQueueCoordinator scoped =
                     new ScopedQueueCoordinator(
                             secondaryMask,
-                            Location.at(world, blockX, 0, blockZ),
-                            Location.at(world, blockX + 15, 255, blockZ + 15)
+                            Location.at(world, blockX, area.getMinGenHeight(), blockZ),
+                            Location.at(world, blockX + 15, area.getMaxGenHeight(), blockZ + 15)
                     );
             generator.generateChunk(scoped, area);
             generator.populateChunk(scoped, area);

Core/src/main/java/com/plotsquared/core/generator/ClassicPlotManager.java

@@ -37,7 +37,6 @@ import com.plotsquared.core.plot.Plot;
 import com.plotsquared.core.plot.PlotAreaTerrainType;
 import com.plotsquared.core.plot.PlotId;
 import com.plotsquared.core.queue.QueueCoordinator;
-import com.plotsquared.core.util.BlockUtil;
 import com.plotsquared.core.util.MathMan;
 import com.plotsquared.core.util.RegionManager;
 import com.plotsquared.core.util.task.TaskManager;
@@ -147,7 +146,15 @@ public class ClassicPlotManager extends SquarePlotManager {
     ) {
         Plot plot = classicPlotWorld.getPlotAbs(plotId);
         if (plot != null && plot.isBasePlot()) {
-            return this.regionManager.setCuboids(classicPlotWorld, plot.getRegions(), blocks, 1, getWorldHeight(), actor, queue);
+            return this.regionManager.setCuboids(
+                    classicPlotWorld,
+                    plot.getRegions(),
+                    blocks,
+                    classicPlotWorld.getMinBuildHeight(),
+                    classicPlotWorld.getMaxBuildHeight(),
+                    actor,
+                    queue
+            );
         }
         return false;
     }
@@ -175,7 +182,7 @@ public class ClassicPlotManager extends SquarePlotManager {
                             plot.getRegions(),
                             blocks,
                             classicPlotWorld.PLOT_HEIGHT + 1,
-                            getWorldHeight(),
+                            classicPlotWorld.getMaxBuildHeight(),
                             actor,
                             queue
                     );
@@ -204,7 +211,7 @@ public class ClassicPlotManager extends SquarePlotManager {
                     classicPlotWorld,
                     plot.getRegions(),
                     blocks,
-                    1,
+                    classicPlotWorld.getMinBuildHeight(),
                     classicPlotWorld.PLOT_HEIGHT - 1,
                     actor,
                     queue
@@ -281,7 +288,7 @@ public class ClassicPlotManager extends SquarePlotManager {
             }
         }
 
-        int maxY = classicPlotWorld.getPlotManager().getWorldHeight();
+        int maxY = classicPlotWorld.getMaxBuildHeight();
         if (!plot.isMerged(Direction.NORTH)) {
             int z = bottom.getZ();
             for (int x = bottom.getX(); x <= top.getX(); x++) {
@@ -382,7 +389,7 @@ public class ClassicPlotManager extends SquarePlotManager {
         if (!plot.isMerged(Direction.NORTH)) {
             int z = bot.getZ();
             for (int x = bot.getX(); x < top.getX(); x++) {
-                for (int y = 1; y <= classicPlotWorld.WALL_HEIGHT; y++) {
+                for (int y = classicPlotWorld.getMinBuildHeight(); y <= classicPlotWorld.WALL_HEIGHT; y++) {
                     queue.setBlock(x, y, z, blocks);
                 }
             }
@@ -390,7 +397,7 @@ public class ClassicPlotManager extends SquarePlotManager {
         if (!plot.isMerged(Direction.WEST)) {
             int x = bot.getX();
             for (int z = bot.getZ(); z < top.getZ(); z++) {
-                for (int y = 1; y <= classicPlotWorld.WALL_HEIGHT; y++) {
+                for (int y = classicPlotWorld.getMinBuildHeight(); y <= classicPlotWorld.WALL_HEIGHT; y++) {
                     queue.setBlock(x, y, z, blocks);
                 }
             }
@@ -398,7 +405,7 @@ public class ClassicPlotManager extends SquarePlotManager {
         if (!plot.isMerged(Direction.SOUTH)) {
             int z = top.getZ();
             for (int x = bot.getX(); x < top.getX() + (plot.isMerged(Direction.EAST) ? 0 : 1); x++) {
-                for (int y = 1; y <= classicPlotWorld.WALL_HEIGHT; y++) {
+                for (int y = classicPlotWorld.getMinBuildHeight(); y <= classicPlotWorld.WALL_HEIGHT; y++) {
                     queue.setBlock(x, y, z, blocks);
                 }
             }
@@ -406,7 +413,7 @@ public class ClassicPlotManager extends SquarePlotManager {
         if (!plot.isMerged(Direction.EAST)) {
             int x = top.getX();
             for (int z = bot.getZ(); z < top.getZ() + (plot.isMerged(Direction.SOUTH) ? 0 : 1); z++) {
-                for (int y = 1; y <= classicPlotWorld.WALL_HEIGHT; y++) {
+                for (int y = classicPlotWorld.getMinBuildHeight(); y <= classicPlotWorld.WALL_HEIGHT; y++) {
                     queue.setBlock(x, y, z, blocks);
                 }
             }
@@ -501,7 +508,7 @@ public class ClassicPlotManager extends SquarePlotManager {
             enqueue = true;
         }
 
-        int maxY = getWorldHeight();
+        int maxY = classicPlotWorld.getMaxGenHeight();
         queue.setCuboid(
                 Location.at(
                         classicPlotWorld.getWorldName(),
@@ -513,27 +520,27 @@ public class ClassicPlotManager extends SquarePlotManager {
         );
         if (classicPlotWorld.PLOT_BEDROCK) {
             queue.setCuboid(
-                    Location.at(classicPlotWorld.getWorldName(), sx, 0, sz + 1),
-                    Location.at(classicPlotWorld.getWorldName(), ex, 0, ez - 1),
+                    Location.at(classicPlotWorld.getWorldName(), sx, classicPlotWorld.getMinGenHeight(), sz + 1),
+                    Location.at(classicPlotWorld.getWorldName(), ex, classicPlotWorld.getMinGenHeight(), ez - 1),
                     BlockTypes.BEDROCK.getDefaultState()
             );
-            queue.setCuboid(
-                    Location.at(classicPlotWorld.getWorldName(), sx, 1, sz + 1),
-                    Location.at(classicPlotWorld.getWorldName(), sx, classicPlotWorld.WALL_HEIGHT, ez - 1),
-                    classicPlotWorld.WALL_FILLING.toPattern()
-            );
-        } else {
-            queue.setCuboid(
-                    Location.at(classicPlotWorld.getWorldName(), sx, 0, sz + 1),
-                    Location.at(classicPlotWorld.getWorldName(), sx, classicPlotWorld.WALL_HEIGHT, ez - 1),
-                    classicPlotWorld.WALL_FILLING.toPattern()
-            );
         }
+        int startYOffset = classicPlotWorld.PLOT_BEDROCK ? 1 : 0;
         queue.setCuboid(
-                Location.at(classicPlotWorld.getWorldName(), sx, 1, sz + 1),
+                Location.at(classicPlotWorld.getWorldName(), ex, classicPlotWorld.getMinGenHeight() + startYOffset, sz + 1),
+                Location.at(classicPlotWorld.getWorldName(), ex, classicPlotWorld.WALL_HEIGHT, ez - 1),
+                classicPlotWorld.WALL_FILLING.toPattern()
+        );
+        queue.setCuboid(
+                Location.at(classicPlotWorld.getWorldName(), sx, classicPlotWorld.getMinGenHeight() + startYOffset, sz + 1),
                 Location.at(classicPlotWorld.getWorldName(), sx, classicPlotWorld.WALL_HEIGHT, ez - 1),
                 classicPlotWorld.WALL_FILLING.toPattern()
         );
+        queue.setCuboid(
+                Location.at(classicPlotWorld.getWorldName(), sx + 1, classicPlotWorld.getMinGenHeight() + startYOffset, sz + 1),
+                Location.at(classicPlotWorld.getWorldName(), ex - 1, classicPlotWorld.ROAD_HEIGHT, ez - 1),
+                classicPlotWorld.ROAD_BLOCK.toPattern()
+        );
 
         if (classicPlotWorld.PLACE_TOP_BLOCK) {
             queue.setCuboid(
@@ -541,24 +548,12 @@ public class ClassicPlotManager extends SquarePlotManager {
                     Location.at(classicPlotWorld.getWorldName(), sx, classicPlotWorld.WALL_HEIGHT + 1, ez - 1),
                     classicPlotWorld.WALL_BLOCK.toPattern()
             );
-        }
-        queue.setCuboid(
-                Location.at(classicPlotWorld.getWorldName(), ex, 1, sz + 1),
-                Location.at(classicPlotWorld.getWorldName(), ex, classicPlotWorld.WALL_HEIGHT, ez - 1),
-                classicPlotWorld.WALL_FILLING.toPattern()
-        );
-        if (classicPlotWorld.PLACE_TOP_BLOCK) {
             queue.setCuboid(
                     Location.at(classicPlotWorld.getWorldName(), ex, classicPlotWorld.WALL_HEIGHT + 1, sz + 1),
                     Location.at(classicPlotWorld.getWorldName(), ex, classicPlotWorld.WALL_HEIGHT + 1, ez - 1),
                     classicPlotWorld.WALL_BLOCK.toPattern()
             );
         }
-        queue.setCuboid(
-                Location.at(classicPlotWorld.getWorldName(), sx + 1, 1, sz + 1),
-                Location.at(classicPlotWorld.getWorldName(), ex - 1, classicPlotWorld.ROAD_HEIGHT, ez - 1),
-                classicPlotWorld.ROAD_BLOCK.toPattern()
-        );
         return !enqueue || queue.enqueue();
     }
 
@@ -584,19 +579,32 @@ public class ClassicPlotManager extends SquarePlotManager {
                         classicPlotWorld.schematicStartHeight() + 1,
                         sz
                 ),
-                Location.at(classicPlotWorld.getWorldName(), ex - 1, classicPlotWorld.getPlotManager().getWorldHeight(), ez),
+                Location.at(classicPlotWorld.getWorldName(), ex - 1, classicPlotWorld.getMaxGenHeight(), ez),
                 BlockTypes.AIR.getDefaultState()
         );
+        if (classicPlotWorld.PLOT_BEDROCK) {
+            queue.setCuboid(
+                    Location.at(classicPlotWorld.getWorldName(), sx + 1, classicPlotWorld.getMinGenHeight(), sz),
+                    Location.at(classicPlotWorld.getWorldName(), ex - 1, classicPlotWorld.getMinGenHeight(), ez),
+                    BlockTypes.BEDROCK.getDefaultState()
+            );
+        }
+        int startYOffset = classicPlotWorld.PLOT_BEDROCK ? 1 : 0;
         queue.setCuboid(
-                Location.at(classicPlotWorld.getWorldName(), sx + 1, 0, sz),
-                Location.at(classicPlotWorld.getWorldName(), ex - 1, 0, ez),
-                BlockUtil.get((short) 7, (byte) 0)
-        );
-        queue.setCuboid(
-                Location.at(classicPlotWorld.getWorldName(), sx + 1, 1, sz),
+                Location.at(classicPlotWorld.getWorldName(), sx + 1, classicPlotWorld.getMinGenHeight() + startYOffset, sz),
                 Location.at(classicPlotWorld.getWorldName(), ex - 1, classicPlotWorld.WALL_HEIGHT, sz),
                 classicPlotWorld.WALL_FILLING.toPattern()
         );
+        queue.setCuboid(
+                Location.at(classicPlotWorld.getWorldName(), sx + 1, classicPlotWorld.getMinGenHeight() + startYOffset, ez),
+                Location.at(classicPlotWorld.getWorldName(), ex - 1, classicPlotWorld.WALL_HEIGHT, ez),
+                classicPlotWorld.WALL_FILLING.toPattern()
+        );
+        queue.setCuboid(
+                Location.at(classicPlotWorld.getWorldName(), sx + 1, classicPlotWorld.getMinGenHeight() + startYOffset, sz + 1),
+                Location.at(classicPlotWorld.getWorldName(), ex - 1, classicPlotWorld.ROAD_HEIGHT, ez - 1),
+                classicPlotWorld.ROAD_BLOCK.toPattern()
+        );
 
         if (classicPlotWorld.PLACE_TOP_BLOCK) {
             queue.setCuboid(
@@ -604,24 +612,12 @@ public class ClassicPlotManager extends SquarePlotManager {
                     Location.at(classicPlotWorld.getWorldName(), ex - 1, classicPlotWorld.WALL_HEIGHT + 1, sz),
                     classicPlotWorld.WALL_BLOCK.toPattern()
             );
-        }
-        queue.setCuboid(
-                Location.at(classicPlotWorld.getWorldName(), sx + 1, 1, ez),
-                Location.at(classicPlotWorld.getWorldName(), ex - 1, classicPlotWorld.WALL_HEIGHT, ez),
-                classicPlotWorld.WALL_FILLING.toPattern()
-        );
-        if (classicPlotWorld.PLACE_TOP_BLOCK) {
             queue.setCuboid(
                     Location.at(classicPlotWorld.getWorldName(), sx + 1, classicPlotWorld.WALL_HEIGHT + 1, ez),
                     Location.at(classicPlotWorld.getWorldName(), ex - 1, classicPlotWorld.WALL_HEIGHT + 1, ez),
                     classicPlotWorld.WALL_BLOCK.toPattern()
             );
         }
-        queue.setCuboid(
-                Location.at(classicPlotWorld.getWorldName(), sx + 1, 1, sz + 1),
-                Location.at(classicPlotWorld.getWorldName(), ex - 1, classicPlotWorld.ROAD_HEIGHT, ez - 1),
-                classicPlotWorld.ROAD_BLOCK.toPattern()
-        );
         return !enqueue || queue.enqueue();
     }
 
@@ -642,14 +638,19 @@ public class ClassicPlotManager extends SquarePlotManager {
 
         queue.setCuboid(
                 Location.at(classicPlotWorld.getWorldName(), sx + 1, classicPlotWorld.ROAD_HEIGHT + 1, sz + 1),
-                Location.at(classicPlotWorld.getWorldName(), ex - 1, classicPlotWorld.getPlotManager().getWorldHeight(), ez - 1),
+                Location.at(classicPlotWorld.getWorldName(), ex - 1, classicPlotWorld.getMaxGenHeight(), ez - 1),
                 BlockTypes.AIR.getDefaultState()
         );
-        queue.setCuboid(Location.at(classicPlotWorld.getWorldName(), sx + 1, 0, sz + 1),
-                Location.at(classicPlotWorld.getWorldName(), ex - 1, 0, ez - 1), BlockUtil.get((short) 7, (byte) 0)
-        );
+        if (classicPlotWorld.PLOT_BEDROCK) {
+            queue.setCuboid(
+                    Location.at(classicPlotWorld.getWorldName(), sx + 1, classicPlotWorld.getMinGenHeight(), sz + 1),
+                    Location.at(classicPlotWorld.getWorldName(), ex - 1, classicPlotWorld.getMinGenHeight(), ez - 1),
+                    BlockTypes.BEDROCK.getDefaultState()
+            );
+        }
+        int startYOffset = classicPlotWorld.PLOT_BEDROCK ? 1 : 0;
         queue.setCuboid(
-                Location.at(classicPlotWorld.getWorldName(), sx + 1, 1, sz + 1),
+                Location.at(classicPlotWorld.getWorldName(), sx + 1, classicPlotWorld.getMinGenHeight() + startYOffset, sz + 1),
                 Location.at(classicPlotWorld.getWorldName(), ex - 1, classicPlotWorld.ROAD_HEIGHT, ez - 1),
                 classicPlotWorld.ROAD_BLOCK.toPattern()
         );
@@ -679,11 +680,12 @@ public class ClassicPlotManager extends SquarePlotManager {
                                 classicPlotWorld.schematicStartHeight() + 1,
                                 sz
                         ),
-                        Location.at(classicPlotWorld.getWorldName(), ex, classicPlotWorld.getPlotManager().getWorldHeight(), ez),
+                        Location.at(classicPlotWorld.getWorldName(), ex, classicPlotWorld.getMaxGenHeight(), ez),
                         BlockTypes.AIR.getDefaultState()
                 );
+        int startYOffset = classicPlotWorld.PLOT_BEDROCK ? 1 : 0;
         queue.setCuboid(
-                Location.at(classicPlotWorld.getWorldName(), sx, 1, sz + 1),
+                Location.at(classicPlotWorld.getWorldName(), sx, classicPlotWorld.getMinGenHeight() + startYOffset, sz + 1),
                 Location.at(classicPlotWorld.getWorldName(), ex, classicPlotWorld.PLOT_HEIGHT - 1, ez - 1),
                 classicPlotWorld.MAIN_BLOCK.toPattern()
         );
@@ -719,11 +721,12 @@ public class ClassicPlotManager extends SquarePlotManager {
                                 classicPlotWorld.schematicStartHeight() + 1,
                                 sz
                         ),
-                        Location.at(classicPlotWorld.getWorldName(), ex, classicPlotWorld.getPlotManager().getWorldHeight(), ez),
+                        Location.at(classicPlotWorld.getWorldName(), ex, classicPlotWorld.getMaxGenHeight(), ez),
                         BlockTypes.AIR.getDefaultState()
                 );
+        int startYOffset = classicPlotWorld.PLOT_BEDROCK ? 1 : 0;
         queue.setCuboid(
-                Location.at(classicPlotWorld.getWorldName(), sx + 1, 1, sz),
+                Location.at(classicPlotWorld.getWorldName(), sx + 1, classicPlotWorld.getMinGenHeight() + startYOffset, sz),
                 Location.at(classicPlotWorld.getWorldName(), ex - 1, classicPlotWorld.PLOT_HEIGHT - 1, ez),
                 classicPlotWorld.MAIN_BLOCK.toPattern()
         );
@@ -758,11 +761,12 @@ public class ClassicPlotManager extends SquarePlotManager {
                                 classicPlotWorld.schematicStartHeight() + 1,
                                 sz
                         ),
-                        Location.at(classicPlotWorld.getWorldName(), ex, classicPlotWorld.getPlotManager().getWorldHeight(), ez),
+                        Location.at(classicPlotWorld.getWorldName(), ex, classicPlotWorld.getMaxGenHeight(), ez),
                         BlockTypes.AIR.getDefaultState()
                 );
+        int startYOffset = classicPlotWorld.PLOT_BEDROCK ? 1 : 0;
         queue.setCuboid(
-                Location.at(classicPlotWorld.getWorldName(), sx, 1, sz),
+                Location.at(classicPlotWorld.getWorldName(), sx, classicPlotWorld.getMinGenHeight() + startYOffset, sz),
                 Location.at(classicPlotWorld.getWorldName(), ex, classicPlotWorld.PLOT_HEIGHT - 1, ez),
                 classicPlotWorld.MAIN_BLOCK.toPattern()
         );

Core/src/main/java/com/plotsquared/core/generator/ClassicPlotWorld.java

@@ -127,16 +127,16 @@ public abstract class ClassicPlotWorld extends SquarePlotWorld {
     public void loadConfiguration(ConfigurationSection config) {
         super.loadConfiguration(config);
         this.PLOT_BEDROCK = config.getBoolean("plot.bedrock");
-        this.PLOT_HEIGHT = Math.min(255, config.getInt("plot.height"));
+        this.PLOT_HEIGHT = Math.min(getMaxGenHeight(), config.getInt("plot.height"));
         this.MAIN_BLOCK = new BlockBucket(config.getString("plot.filling"));
         this.TOP_BLOCK = new BlockBucket(config.getString("plot.floor"));
         this.WALL_BLOCK = new BlockBucket(config.getString("wall.block"));
-        this.ROAD_HEIGHT = Math.min(255, config.getInt("road.height"));
+        this.ROAD_HEIGHT = Math.min(getMaxGenHeight(), config.getInt("road.height"));
         this.ROAD_BLOCK = new BlockBucket(config.getString("road.block"));
         this.WALL_FILLING = new BlockBucket(config.getString("wall.filling"));
-        this.WALL_HEIGHT = Math.min(254, config.getInt("wall.height"));
-        this.CLAIMED_WALL_BLOCK = new BlockBucket(config.getString("wall.block_claimed"));
         this.PLACE_TOP_BLOCK = config.getBoolean("wall.place_top_block");
+        this.WALL_HEIGHT = Math.min(getMaxGenHeight() - (PLACE_TOP_BLOCK ? 1 : 0), config.getInt("wall.height"));
+        this.CLAIMED_WALL_BLOCK = new BlockBucket(config.getString("wall.block_claimed"));
     }
 
     int schematicStartHeight() {

Core/src/main/java/com/plotsquared/core/generator/HybridGen.java

@@ -91,7 +91,7 @@ public class HybridGen extends IndependentPlotGenerator {
         if (hybridPlotWorld.PLOT_BEDROCK) {
             for (short x = 0; x < 16; x++) {
                 for (short z = 0; z < 16; z++) {
-                    result.setBlock(x, 0, z, BlockTypes.BEDROCK.getDefaultState());
+                    result.setBlock(x, hybridPlotWorld.getMinGenHeight(), z, BlockTypes.BEDROCK.getDefaultState());
                 }
             }
         }
@@ -156,7 +156,7 @@ public class HybridGen extends IndependentPlotGenerator {
             }
         }
         // generation
-        int startY = hybridPlotWorld.PLOT_BEDROCK ? 1 : 0;
+        int startY = hybridPlotWorld.getMinGenHeight() + (hybridPlotWorld.PLOT_BEDROCK ? 1: 0);
         for (short x = 0; x < 16; x++) {
             if (insideRoadX[x]) {
                 for (short z = 0; z < 16; z++) {

Core/src/main/java/com/plotsquared/core/generator/HybridPlotManager.java

@@ -46,7 +46,6 @@ import com.sk89q.worldedit.function.pattern.Pattern;
 import com.sk89q.worldedit.regions.CuboidRegion;
 import com.sk89q.worldedit.world.biome.BiomeType;
 import com.sk89q.worldedit.world.block.BaseBlock;
-import com.sk89q.worldedit.world.block.BlockState;
 import com.sk89q.worldedit.world.block.BlockTypes;
 import org.checkerframework.checker.nullness.qual.NonNull;
 import org.checkerframework.checker.nullness.qual.Nullable;
@@ -107,22 +106,32 @@ public class HybridPlotManager extends ClassicPlotManager {
 
     @Override
     public boolean createRoadEast(final @NonNull Plot plot, @Nullable QueueCoordinator queue) {
+        boolean enqueue = false;
+        if (queue == null) {
+            queue = hybridPlotWorld.getQueue();
+            enqueue = true;
+        }
         super.createRoadEast(plot, queue);
         PlotId id = plot.getId();
         PlotId id2 = PlotId.of(id.getX() + 1, id.getY());
         Location bot = getPlotBottomLocAbs(id2);
         Location top = getPlotTopLocAbs(id);
-        Location pos1 = Location.at(hybridPlotWorld.getWorldName(), top.getX() + 1, 0, bot.getZ() - 1);
-        Location pos2 = Location.at(hybridPlotWorld.getWorldName(), bot.getX(), Math.min(getWorldHeight(), 255), top.getZ() + 1);
+        Location pos1 = Location.at(
+                hybridPlotWorld.getWorldName(),
+                top.getX() + 1,
+                hybridPlotWorld.getMinGenHeight(),
+                bot.getZ() - 1
+        );
+        Location pos2 = Location.at(
+                hybridPlotWorld.getWorldName(),
+                bot.getX(),
+                hybridPlotWorld.getMaxGenHeight(),
+                top.getZ() + 1
+        );
         this.resetBiome(hybridPlotWorld, pos1, pos2);
         if (!hybridPlotWorld.ROAD_SCHEMATIC_ENABLED) {
             return true;
         }
-        boolean enqueue = false;
-        if (queue == null) {
-            queue = hybridPlotWorld.getQueue();
-            enqueue = true;
-        }
         createSchemAbs(queue, pos1, pos2, true);
         return !enqueue || queue.enqueue();
     }
@@ -139,7 +148,7 @@ public class HybridPlotManager extends ClassicPlotManager {
                         (pos1.getX() + pos2.getX()) / 2,
                         (pos1.getZ() + pos2.getZ()) / 2
                 ), biome)) {
-            WorldUtil.setBiome(hybridPlotWorld.getWorldName(), pos1.getX(), pos1.getZ(), pos2.getX(), pos2.getZ(), biome);
+            WorldUtil.setBiome(hybridPlotWorld.getWorldName(), new CuboidRegion(pos1.getBlockVector3(), pos2.getBlockVector3()), biome);
         }
     }
 
@@ -190,38 +199,38 @@ public class HybridPlotManager extends ClassicPlotManager {
 
     @Override
     public boolean createRoadSouth(final @NonNull Plot plot, @Nullable QueueCoordinator queue) {
+        boolean enqueue = false;
+        if (queue == null) {
+            enqueue = true;
+            queue = hybridPlotWorld.getQueue();
+        }
         super.createRoadSouth(plot, queue);
         PlotId id = plot.getId();
         PlotId id2 = PlotId.of(id.getX(), id.getY() + 1);
         Location bot = getPlotBottomLocAbs(id2);
         Location top = getPlotTopLocAbs(id);
-        Location pos1 = Location.at(hybridPlotWorld.getWorldName(), bot.getX() - 1, 0, top.getZ() + 1);
-        Location pos2 = Location.at(hybridPlotWorld.getWorldName(), top.getX() + 1, Math.min(getWorldHeight(), 255), bot.getZ());
+        Location pos1 = Location.at(hybridPlotWorld.getWorldName(), bot.getX() - 1, hybridPlotWorld.getMinGenHeight(), top.getZ() + 1);
+        Location pos2 = Location.at(hybridPlotWorld.getWorldName(), top.getX() + 1, hybridPlotWorld.getMaxGenHeight(), bot.getZ());
         this.resetBiome(hybridPlotWorld, pos1, pos2);
         if (!hybridPlotWorld.ROAD_SCHEMATIC_ENABLED) {
             return true;
         }
-        boolean enqueue = false;
-        if (queue == null) {
-            enqueue = true;
-            queue = hybridPlotWorld.getQueue();
-        }
         createSchemAbs(queue, pos1, pos2, true);
         return !enqueue || queue.enqueue();
     }
 
     @Override
     public boolean createRoadSouthEast(final @NonNull Plot plot, @Nullable QueueCoordinator queue) {
-        super.createRoadSouthEast(plot, queue);
-        PlotId id = plot.getId();
-        PlotId id2 = PlotId.of(id.getX() + 1, id.getY() + 1);
-        Location pos1 = getPlotTopLocAbs(id).add(1, 0, 1).withY(0);
-        Location pos2 = getPlotBottomLocAbs(id2).withY(Math.min(getWorldHeight(), 255));
         boolean enqueue = false;
         if (queue == null) {
             enqueue = true;
             queue = hybridPlotWorld.getQueue();
         }
+        super.createRoadSouthEast(plot, queue);
+        PlotId id = plot.getId();
+        PlotId id2 = PlotId.of(id.getX() + 1, id.getY() + 1);
+        Location pos1 = getPlotTopLocAbs(id).add(1, 0, 1);
+        Location pos2 = getPlotBottomLocAbs(id2);
         createSchemAbs(queue, pos1, pos2, true);
         if (hybridPlotWorld.ROAD_SCHEMATIC_ENABLED) {
             createSchemAbs(queue, pos1, pos2, true);
@@ -271,11 +280,23 @@ public class HybridPlotManager extends ClassicPlotManager {
             queue.setCompleteTask(whenDone);
         }
         if (!canRegen) {
-            queue.setCuboid(pos1.withY(0), pos2.withY(0), bedrock);
+            queue.setCuboid(
+                    pos1.withY(hybridPlotWorld.getMinGenHeight()),
+                    pos2.withY(hybridPlotWorld.getMinGenHeight()),
+                    hybridPlotWorld.PLOT_BEDROCK ? bedrock : filling
+            );
             // Each component has a different layer
-            queue.setCuboid(pos1.withY(1), pos2.withY(hybridPlotWorld.PLOT_HEIGHT - 1), filling);
+            queue.setCuboid(
+                    pos1.withY(hybridPlotWorld.getMinGenHeight() + 1),
+                    pos2.withY(hybridPlotWorld.PLOT_HEIGHT - 1),
+                    filling
+            );
             queue.setCuboid(pos1.withY(hybridPlotWorld.PLOT_HEIGHT), pos2.withY(hybridPlotWorld.PLOT_HEIGHT), plotfloor);
-            queue.setCuboid(pos1.withY(hybridPlotWorld.PLOT_HEIGHT + 1), pos2.withY(getWorldHeight()), BlockTypes.AIR.getDefaultState());
+            queue.setCuboid(
+                    pos1.withY(hybridPlotWorld.PLOT_HEIGHT + 1),
+                    pos2.withY(hybridPlotWorld.getMaxGenHeight()),
+                    BlockTypes.AIR.getDefaultState()
+            );
             queue.setBiomeCuboid(pos1, pos2, biome);
         } else {
             queue.setRegenRegion(new CuboidRegion(pos1.getBlockVector3(), pos2.getBlockVector3()));

Core/src/main/java/com/plotsquared/core/generator/HybridPlotWorld.java

@@ -79,6 +79,7 @@ public class HybridPlotWorld extends ClassicPlotWorld {
     public int SCHEM_Y;
     private Location SIGN_LOCATION;
     private File root = null;
+    private int lastOverlayHeightError = Integer.MIN_VALUE;
 
     @Inject
     private SchematicHandler schematicHandler;
@@ -171,9 +172,9 @@ public class HybridPlotWorld extends ClassicPlotWorld {
     public void loadConfiguration(ConfigurationSection config) {
         super.loadConfiguration(config);
         if ((this.ROAD_WIDTH & 1) == 0) {
-            this.PATH_WIDTH_LOWER = (short) (Math.floor(this.ROAD_WIDTH / 2) - 1);
+            this.PATH_WIDTH_LOWER = (short) (Math.floor(this.ROAD_WIDTH / 2f) - 1);
         } else {
-            this.PATH_WIDTH_LOWER = (short) Math.floor(this.ROAD_WIDTH / 2);
+            this.PATH_WIDTH_LOWER = (short) Math.floor(this.ROAD_WIDTH / 2f);
         }
         if (this.ROAD_WIDTH == 0) {
             this.PATH_WIDTH_UPPER = (short) (this.SIZE + 1);
@@ -251,31 +252,34 @@ public class HybridPlotWorld extends ClassicPlotWorld {
         Schematic schematic2 = this.schematicHandler.getSchematic(schematic2File);
         Schematic schematic3 = this.schematicHandler.getSchematic(schematic3File);
         int shift = this.ROAD_WIDTH / 2;
-        int oddshift = (this.ROAD_WIDTH & 1) == 0 ? 0 : 1;
+        int oddshift = (this.ROAD_WIDTH & 1);
 
         SCHEM_Y = schematicStartHeight();
         int plotY = PLOT_HEIGHT - SCHEM_Y;
         int minRoadWall = Settings.Schematics.USE_WALL_IN_ROAD_SCHEM_HEIGHT ? Math.min(ROAD_HEIGHT, WALL_HEIGHT) : ROAD_HEIGHT;
         int roadY = minRoadWall - SCHEM_Y;
 
+        int worldHeight = getMaxGenHeight() - getMinGenHeight() + 1;
+
+        // SCHEM_Y should be normalised to the plot "start" height
         if (schematic3 != null) {
-            if (schematic3.getClipboard().getDimensions().getY() == 256) {
+            if (schematic3.getClipboard().getDimensions().getY() == worldHeight) {
                 SCHEM_Y = plotY = 0;
             } else if (!Settings.Schematics.PASTE_ON_TOP) {
-                SCHEM_Y = plotY = getMinBuildHeight();
+                SCHEM_Y = plotY = getMinBuildHeight() - getMinGenHeight();
             }
         }
 
         if (schematic1 != null) {
-            if (schematic1.getClipboard().getDimensions().getY() == 256) {
-                SCHEM_Y = roadY = 0;
-                if (schematic3 != null && schematic3.getClipboard().getDimensions().getY() != 256
+            if (schematic1.getClipboard().getDimensions().getY() == worldHeight) {
+                SCHEM_Y = roadY = getMinGenHeight();
+                if (schematic3 != null && schematic3.getClipboard().getDimensions().getY() != worldHeight
                         && !Settings.Schematics.PASTE_ON_TOP) {
                     plotY = PLOT_HEIGHT;
                 }
             } else if (!Settings.Schematics.PASTE_ROAD_ON_TOP) {
                 SCHEM_Y = roadY = getMinBuildHeight();
-                if (schematic3 != null && schematic3.getClipboard().getDimensions().getY() != 256
+                if (schematic3 != null && schematic3.getClipboard().getDimensions().getY() != worldHeight
                         && !Settings.Schematics.PASTE_ON_TOP) {
                     plotY = PLOT_HEIGHT;
                 }
@@ -428,7 +432,10 @@ public class HybridPlotWorld extends ClassicPlotWorld {
         int pair = MathMan.pair(x, z);
         BaseBlock[] existing = this.G_SCH.computeIfAbsent(pair, k -> new BaseBlock[height]);
         if (y >= height) {
-            LOGGER.error("Error adding overlay block. `y > height`");
+            if (y != lastOverlayHeightError) {
+                lastOverlayHeightError = y;
+                LOGGER.error(String.format("Error adding overlay block. `y > height`. y=%s, height=%s", y, height));
+            }
             return;
         }
         existing[y] = id;

Core/src/main/java/com/plotsquared/core/generator/HybridUtils.java

@@ -65,6 +65,7 @@ import com.sk89q.worldedit.world.block.BlockTypes;
 import org.apache.logging.log4j.LogManager;
 import org.apache.logging.log4j.Logger;
 import org.checkerframework.checker.nullness.qual.NonNull;
+import org.checkerframework.checker.nullness.qual.Nullable;
 
 import java.io.File;
 import java.util.ArrayDeque;
@@ -73,6 +74,7 @@ import java.util.Arrays;
 import java.util.Collections;
 import java.util.HashSet;
 import java.util.Iterator;
+import java.util.LinkedHashSet;
 import java.util.List;
 import java.util.Set;
 import java.util.concurrent.atomic.AtomicBoolean;
@@ -85,7 +87,9 @@ public class HybridUtils {
     public static HybridUtils manager;
     public static Set<BlockVector2> regions;
     public static int height;
-    public static Set<BlockVector2> chunks = new HashSet<>();
+    // Use ordered for reasonable chunk loading order to reduce paper unloading neighbour chunks and then us attempting to load
+    // them again, causing errors
+    public static Set<BlockVector2> chunks = new LinkedHashSet<>();
     public static PlotArea area;
     public static boolean UPDATE = false;
 
@@ -145,6 +149,8 @@ public class HybridUtils {
             final int ctz = tz >> 4;
             final int width = tx - bx + 1;
             final int length = tz - bz + 1;
+            final int height = area.getMaxGenHeight() - area.getMinGenHeight() + 1;
+            final int minHeight = area.getMinGenHeight();
 
             final PlotArea area = this.plotAreaManager.getPlotArea(world, null);
 
@@ -157,7 +163,7 @@ public class HybridUtils {
 
             final BlockState airBlock = BlockTypes.AIR.getDefaultState();
             final BlockState[][][] oldBlocks = chunk.getBlocks();
-            final BlockState[][][] newBlocks = new BlockState[256][width][length];
+            final BlockState[][][] newBlocks = new BlockState[height][width][length];
             for (final BlockState[][] newBlock : newBlocks) {
                 for (final BlockState[] blockStates : newBlock) {
                     Arrays.fill(blockStates, airBlock);
@@ -211,11 +217,12 @@ public class HybridUtils {
                     int xx = chunkBlockX + x;
                     for (int z = minZ; z <= maxZ; z++) {
                         int zz = chunkBlockZ + z;
-                        for (int y = 0; y < 256; y++) {
+                        for (int yIndex = 0; yIndex < height; yIndex++) {
+                            int y = yIndex + minHeight;
                             BlockState block = queue.getBlock(xx, y, zz);
                             int xr = xb + x;
                             int zr = zb + z;
-                            newBlocks[y][xr][zr] = block;
+                            newBlocks[yIndex][xr][zr] = block;
                         }
                     }
                 }
@@ -232,10 +239,10 @@ public class HybridUtils {
                 for (int x = 0; x < width; x++) {
                     for (int z = 0; z < length; z++) {
                         Set<BlockType> types = new HashSet<>();
-                        for (int y = 0; y < 256; y++) {
-                            BlockState old = oldBlocks[y][x][z];
+                        for (int yIndex = 0; yIndex < height; yIndex++) {
+                            BlockState old = oldBlocks[yIndex][x][z];
                             try {
-                                BlockState now = newBlocks[y][x][z];
+                                BlockState now = newBlocks[yIndex][x][z];
                                 if (!old.equals(now)) {
                                     changes[i]++;
                                 }
@@ -244,23 +251,23 @@ public class HybridUtils {
                                 } else {
                                     // check vertices
                                     // modifications_adjacent
-                                    if (x > 0 && z > 0 && y > 0 && x < width - 1 && z < length - 1 && y < 255) {
-                                        if (newBlocks[y - 1][x][z].getBlockType().getMaterial().isAir()) {
+                                    if (x > 0 && z > 0 && yIndex > 0 && x < width - 1 && z < length - 1 && yIndex < (height - 1)) {
+                                        if (newBlocks[yIndex - 1][x][z].getBlockType().getMaterial().isAir()) {
                                             faces[i]++;
                                         }
-                                        if (newBlocks[y][x - 1][z].getBlockType().getMaterial().isAir()) {
+                                        if (newBlocks[yIndex][x - 1][z].getBlockType().getMaterial().isAir()) {
                                             faces[i]++;
                                         }
-                                        if (newBlocks[y][x][z - 1].getBlockType().getMaterial().isAir()) {
+                                        if (newBlocks[yIndex][x][z - 1].getBlockType().getMaterial().isAir()) {
                                             faces[i]++;
                                         }
-                                        if (newBlocks[y + 1][x][z].getBlockType().getMaterial().isAir()) {
+                                        if (newBlocks[yIndex + 1][x][z].getBlockType().getMaterial().isAir()) {
                                             faces[i]++;
                                         }
-                                        if (newBlocks[y][x + 1][z].getBlockType().getMaterial().isAir()) {
+                                        if (newBlocks[yIndex][x + 1][z].getBlockType().getMaterial().isAir()) {
                                             faces[i]++;
                                         }
-                                        if (newBlocks[y][x][z + 1].getBlockType().getMaterial().isAir()) {
+                                        if (newBlocks[yIndex][x][z + 1].getBlockType().getMaterial().isAir()) {
                                             faces[i]++;
                                         }
                                     }
@@ -408,7 +415,7 @@ public class HybridUtils {
         }
         HybridUtils.UPDATE = true;
         Set<BlockVector2> regions = this.worldUtil.getChunkChunks(area.getWorldName());
-        return scheduleRoadUpdate(area, regions, extend, new HashSet<>());
+        return scheduleRoadUpdate(area, regions, extend, new LinkedHashSet<>());
     }
 
     public boolean scheduleSingleRegionRoadUpdate(Plot plot, int extend) {
@@ -418,7 +425,7 @@ public class HybridUtils {
         HybridUtils.UPDATE = true;
         Set<BlockVector2> regions = new HashSet<>();
         regions.add(RegionManager.getRegion(plot.getCenterSynchronous()));
-        return scheduleRoadUpdate(plot.getArea(), regions, extend, new HashSet<>());
+        return scheduleRoadUpdate(plot.getArea(), regions, extend, new LinkedHashSet<>());
     }
 
     public boolean scheduleRoadUpdate(
@@ -431,26 +438,29 @@ public class HybridUtils {
         HybridUtils.area = area;
         HybridUtils.height = extend;
         HybridUtils.chunks = chunks;
+        final int initial = 1024 * regions.size() + chunks.size();
         final AtomicInteger count = new AtomicInteger(0);
         TaskManager.runTask(new Runnable() {
             @Override
             public void run() {
                 if (!UPDATE) {
                     Iterator<BlockVector2> iter = chunks.iterator();
+                    QueueCoordinator queue = blockQueue.getNewQueue(worldUtil.getWeWorld(area.getWorldName()));
                     while (iter.hasNext()) {
                         BlockVector2 chunk = iter.next();
                         iter.remove();
-                        boolean regenedRoad = regenerateRoad(area, chunk, extend);
+                        boolean regenedRoad = regenerateRoad(area, chunk, extend, queue);
                         if (!regenedRoad) {
-                            LOGGER.info("Failed to regenerate roads");
+                            LOGGER.info("Failed to regenerate roads in chunk {}", chunk);
                         }
                     }
+                    queue.enqueue();
                     LOGGER.info("Cancelled road task");
                     return;
                 }
                 count.incrementAndGet();
-                if (count.intValue() % 20 == 0) {
-                    LOGGER.info("Progress: {}%", 100 * (2048 - chunks.size()) / 2048);
+                if (count.intValue() % 10 == 0) {
+                    LOGGER.info("Progress: {}%", 100 * (initial - (chunks.size() + 1024 * regions.size())) / initial);
                 }
                 if (HybridUtils.regions.isEmpty() && chunks.isEmpty()) {
                     regeneratePlotWalls(area);
@@ -462,7 +472,7 @@ public class HybridUtils {
                     final Runnable task = this;
                     TaskManager.runTaskAsync(() -> {
                         try {
-                            if (chunks.size() < 1024) {
+                            if (chunks.size() < 64) {
                                 if (!HybridUtils.regions.isEmpty()) {
                                     Iterator<BlockVector2> iterator = HybridUtils.regions.iterator();
                                     BlockVector2 loc = iterator.next();
@@ -475,18 +485,35 @@ public class HybridUtils {
                             }
                             if (!chunks.isEmpty()) {
                                 TaskManager.getPlatformImplementation().sync(() -> {
-                                    long start = System.currentTimeMillis();
                                     Iterator<BlockVector2> iterator = chunks.iterator();
-                                    while (System.currentTimeMillis() - start < 20 && !chunks.isEmpty()) {
+                                    if (chunks.size() >= 32) {
+                                        QueueCoordinator queue = blockQueue.getNewQueue(worldUtil.getWeWorld(area.getWorldName()));
+                                        for (int i = 0; i < 32; i++) {
+                                            final BlockVector2 chunk = iterator.next();
+                                            iterator.remove();
+                                            boolean regenedRoads = regenerateRoad(area, chunk, extend, queue);
+                                            if (!regenedRoads) {
+                                                LOGGER.info("Failed to regenerate the road in chunk {}", chunk);
+                                            }
+                                        }
+                                        queue.setCompleteTask(task);
+                                        queue.enqueue();
+                                        return null;
+                                    }
+                                    QueueCoordinator queue = blockQueue.getNewQueue(worldUtil.getWeWorld(area.getWorldName()));
+                                    while (!chunks.isEmpty()) {
                                         final BlockVector2 chunk = iterator.next();
                                         iterator.remove();
-                                        boolean regenedRoads = regenerateRoad(area, chunk, extend);
+                                        boolean regenedRoads = regenerateRoad(area, chunk, extend, queue);
                                         if (!regenedRoads) {
-                                            LOGGER.info("Failed to regenerate road");
+                                            LOGGER.info("Failed to regenerate road in chunk {}", chunk);
                                         }
                                     }
+                                    queue.setCompleteTask(task);
+                                    queue.enqueue();
                                     return null;
                                 });
+                                return;
                             }
                         } catch (Exception e) {
                             e.printStackTrace();
@@ -514,7 +541,6 @@ public class HybridUtils {
         Location bot = plot.getBottomAbs().subtract(1, 0, 1);
         Location top = plot.getTopAbs();
         final HybridPlotWorld plotworld = (HybridPlotWorld) plot.getArea();
-        PlotManager plotManager = plotworld.getPlotManager();
         // Do not use plotworld#schematicStartHeight() here as we want to restore the pre 6.1.4 way of doing it if
         //  USE_WALL_IN_ROAD_SCHEM_HEIGHT is false
         int schemY = Settings.Schematics.USE_WALL_IN_ROAD_SCHEM_HEIGHT ?
@@ -524,10 +550,10 @@ public class HybridUtils {
         int sy = Settings.Schematics.PASTE_ROAD_ON_TOP ? schemY : plot.getArea().getMinBuildHeight();
         int ex = bot.getX();
         int ez = top.getZ();
-        int ey = get_ey(plotManager, queue, sx, ex, sz, ez, sy);
+        int ey = get_ey(plotworld, queue, sx, ex, sz, ez, sy);
         int bz = sz - plotworld.ROAD_WIDTH;
         int tz = sz - 1;
-        int ty = get_ey(plotManager, queue, sx, ex, bz, tz, sy);
+        int ty = get_ey(plotworld, queue, sx, ex, bz, tz, sy);
 
         final Set<CuboidRegion> sideRoad = Collections.singleton(RegionUtil.createRegion(sx, ex, sy, ey, sz, ez));
         final Set<CuboidRegion> intersection = Collections.singleton(RegionUtil.createRegion(sx, ex, sy, ty, bz, tz));
@@ -553,11 +579,11 @@ public class HybridUtils {
         return true;
     }
 
-    public int get_ey(final PlotManager pm, QueueCoordinator queue, int sx, int ex, int sz, int ez, int sy) {
+    private int get_ey(final HybridPlotWorld hpw, QueueCoordinator queue, int sx, int ex, int sz, int ez, int sy) {
         int ey = sy;
         for (int x = sx; x <= ex; x++) {
             for (int z = sz; z <= ez; z++) {
-                for (int y = sy; y <= pm.getWorldHeight(); y++) {
+                for (int y = sy; y <= hpw.getMaxGenHeight(); y++) {
                     if (y > ey) {
                         BlockState block = queue.getBlock(x, y, z);
                         if (!block.getBlockType().getMaterial().isAir()) {
@@ -570,7 +596,36 @@ public class HybridUtils {
         return ey;
     }
 
+    /**
+     * Regenerate the road in a chunk in a plot area.
+     *
+     * @param area   Plot area to regenerate road for
+     * @param chunk  Chunk location to regenerate
+     * @param extend How far to extend setting air above the road
+     * @return if successful
+     * @deprecated use {@link HybridUtils#regenerateRoad(PlotArea, BlockVector2, int, QueueCoordinator)}
+     */
+    @Deprecated(forRemoval = true, since = "6.6.0")
     public boolean regenerateRoad(final PlotArea area, final BlockVector2 chunk, int extend) {
+        return regenerateRoad(area, chunk, extend, null);
+    }
+
+    /**
+     * Regenerate the road in a chunk in a plot area.
+     *
+     * @param area             Plot area to regenerate road for
+     * @param chunk            Chunk location to regenerate
+     * @param extend           How far to extend setting air above the road
+     * @param queueCoordinator {@link QueueCoordinator} to use to set the blocks. Null if one should be created and enqueued
+     * @return if successful
+     * @since 6.6.0
+     */
+    public boolean regenerateRoad(
+            final PlotArea area,
+            final BlockVector2 chunk,
+            int extend,
+            @Nullable QueueCoordinator queueCoordinator
+    ) {
         int x = chunk.getX() << 4;
         int z = chunk.getZ() << 4;
         int ex = x + 15;
@@ -596,92 +651,100 @@ public class HybridUtils {
         z -= plotWorld.ROAD_OFFSET_Z;
         final int finalX = x;
         final int finalZ = z;
-        QueueCoordinator queue = this.blockQueue.getNewQueue(worldUtil.getWeWorld(plotWorld.getWorldName()));
+        final boolean enqueue;
+        final QueueCoordinator queue;
+        if (queueCoordinator == null) {
+            queue = this.blockQueue.getNewQueue(worldUtil.getWeWorld(plotWorld.getWorldName()));
+            enqueue = true;
+        } else {
+            queue = queueCoordinator;
+            enqueue = false;
+        }
         if (id1 == null || id2 == null || id1 != id2) {
-            this.chunkManager.loadChunk(area.getWorldName(), chunk, false).thenRun(() -> {
-                if (id1 != null) {
-                    Plot p1 = area.getPlotAbs(id1);
-                    if (p1 != null && p1.hasOwner() && p1.isMerged()) {
-                        toCheck.set(true);
-                    }
+            if (id1 != null) {
+                Plot p1 = area.getPlotAbs(id1);
+                if (p1 != null && p1.hasOwner() && p1.isMerged()) {
+                    toCheck.set(true);
                 }
-                if (id2 != null && !toCheck.get()) {
-                    Plot p2 = area.getPlotAbs(id2);
-                    if (p2 != null && p2.hasOwner() && p2.isMerged()) {
-                        toCheck.set(true);
-                    }
+            }
+            if (id2 != null && !toCheck.get()) {
+                Plot p2 = area.getPlotAbs(id2);
+                if (p2 != null && p2.hasOwner() && p2.isMerged()) {
+                    toCheck.set(true);
                 }
-                int size = plotWorld.SIZE;
-                for (int X = 0; X < 16; X++) {
-                    short absX = (short) ((finalX + X) % size);
-                    for (int Z = 0; Z < 16; Z++) {
-                        short absZ = (short) ((finalZ + Z) % size);
-                        if (absX < 0) {
-                            absX += size;
-                        }
-                        if (absZ < 0) {
-                            absZ += size;
-                        }
-                        boolean condition;
-                        if (toCheck.get()) {
-                            condition = manager.getPlotId(
-                                    finalX + X + plotWorld.ROAD_OFFSET_X,
-                                    1,
-                                    finalZ + Z + plotWorld.ROAD_OFFSET_Z
-                            ) == null;
-                        } else {
-                            boolean gx = absX > plotWorld.PATH_WIDTH_LOWER;
-                            boolean gz = absZ > plotWorld.PATH_WIDTH_LOWER;
-                            boolean lx = absX < plotWorld.PATH_WIDTH_UPPER;
-                            boolean lz = absZ < plotWorld.PATH_WIDTH_UPPER;
-                            condition = !gx || !gz || !lx || !lz;
-                        }
-                        if (condition) {
-                            BaseBlock[] blocks = plotWorld.G_SCH.get(MathMan.pair(absX, absZ));
-                            int minY = Settings.Schematics.PASTE_ROAD_ON_TOP ? plotWorld.SCHEM_Y : 1;
-                            int maxY = Math.max(extend, blocks.length);
-                            for (int y = 0; y < maxY; y++) {
-                                if (y > blocks.length - 1) {
+            }
+            short size = plotWorld.SIZE;
+            for (int X = 0; X < 16; X++) {
+                short absX = (short) ((finalX + X) % size);
+                for (int Z = 0; Z < 16; Z++) {
+                    short absZ = (short) ((finalZ + Z) % size);
+                    if (absX < 0) {
+                        absX += size;
+                    }
+                    if (absZ < 0) {
+                        absZ += size;
+                    }
+                    boolean condition;
+                    if (toCheck.get()) {
+                        condition = manager.getPlotId(
+                                finalX + X + plotWorld.ROAD_OFFSET_X,
+                                1,
+                                finalZ + Z + plotWorld.ROAD_OFFSET_Z
+                        ) == null;
+                    } else {
+                        boolean gx = absX > plotWorld.PATH_WIDTH_LOWER;
+                        boolean gz = absZ > plotWorld.PATH_WIDTH_LOWER;
+                        boolean lx = absX < plotWorld.PATH_WIDTH_UPPER;
+                        boolean lz = absZ < plotWorld.PATH_WIDTH_UPPER;
+                        condition = !gx || !gz || !lx || !lz;
+                    }
+                    if (condition) {
+                        BaseBlock[] blocks = plotWorld.G_SCH.get(MathMan.pair(absX, absZ));
+                        int minY = Settings.Schematics.PASTE_ROAD_ON_TOP ? plotWorld.SCHEM_Y : area.getMinGenHeight() + 1;
+                        int maxDy = Math.max(extend, blocks.length);
+                        for (int dy = 0; dy < maxDy; dy++) {
+                            if (dy > blocks.length - 1) {
+                                queue.setBlock(
+                                        finalX + X + plotWorld.ROAD_OFFSET_X,
+                                        minY + dy,
+                                        finalZ + Z + plotWorld.ROAD_OFFSET_Z,
+                                        WEExtent.AIRBASE
+                                );
+                            } else {
+                                BaseBlock block = blocks[dy];
+                                if (block != null) {
                                     queue.setBlock(
                                             finalX + X + plotWorld.ROAD_OFFSET_X,
-                                            minY + y,
+                                            minY + dy,
+                                            finalZ + Z + plotWorld.ROAD_OFFSET_Z,
+                                            block
+                                    );
+                                } else {
+                                    queue.setBlock(
+                                            finalX + X + plotWorld.ROAD_OFFSET_X,
+                                            minY + dy,
                                             finalZ + Z + plotWorld.ROAD_OFFSET_Z,
                                             WEExtent.AIRBASE
                                     );
-                                } else {
-                                    BaseBlock block = blocks[y];
-                                    if (block != null) {
-                                        queue.setBlock(
-                                                finalX + X + plotWorld.ROAD_OFFSET_X,
-                                                minY + y,
-                                                finalZ + Z + plotWorld.ROAD_OFFSET_Z,
-                                                block
-                                        );
-                                    } else {
-                                        queue.setBlock(
-                                                finalX + X + plotWorld.ROAD_OFFSET_X,
-                                                minY + y,
-                                                finalZ + Z + plotWorld.ROAD_OFFSET_Z,
-                                                WEExtent.AIRBASE
-                                        );
-                                    }
                                 }
                             }
-                            BiomeType biome = plotWorld.G_SCH_B.get(MathMan.pair(absX, absZ));
-                            if (biome != null) {
-                                queue.setBiome(finalX + X + plotWorld.ROAD_OFFSET_X, finalZ + Z + plotWorld.ROAD_OFFSET_Z, biome);
-                            } else {
-                                queue.setBiome(
-                                        finalX + X + plotWorld.ROAD_OFFSET_X,
-                                        finalZ + Z + plotWorld.ROAD_OFFSET_Z,
-                                        plotWorld.getPlotBiome()
-                                );
-                            }
+                        }
+                        BiomeType biome = plotWorld.G_SCH_B.get(MathMan.pair(absX, absZ));
+                        if (biome != null) {
+                            queue.setBiome(finalX + X + plotWorld.ROAD_OFFSET_X, finalZ + Z + plotWorld.ROAD_OFFSET_Z, biome);
+                        } else {
+                            queue.setBiome(
+                                    finalX + X + plotWorld.ROAD_OFFSET_X,
+                                    finalZ + Z + plotWorld.ROAD_OFFSET_Z,
+                                    plotWorld.getPlotBiome()
+                            );
                         }
                     }
                 }
+            }
+            if (enqueue) {
                 queue.enqueue();
-            });
+            }
             return true;
         }
         return false;

Core/src/main/java/com/plotsquared/core/generator/SquarePlotManager.java

@@ -96,7 +96,7 @@ public abstract class SquarePlotManager extends GridPlotManager {
                 .floor(squarePlotWorld.ROAD_WIDTH / 2) - 1;
         int z = (squarePlotWorld.ROAD_OFFSET_Z + (pz * (squarePlotWorld.ROAD_WIDTH + squarePlotWorld.PLOT_WIDTH))) - (int) Math
                 .floor(squarePlotWorld.ROAD_WIDTH / 2) - 1;
-        return Location.at(squarePlotWorld.getWorldName(), x, Math.min(getWorldHeight(), 255), z);
+        return Location.at(squarePlotWorld.getWorldName(), x, squarePlotWorld.getMaxGenHeight(), z);
     }
 
     @Override
@@ -260,7 +260,7 @@ public abstract class SquarePlotManager extends GridPlotManager {
                 - (int) Math.floor(squarePlotWorld.ROAD_WIDTH / 2);
         int z = (squarePlotWorld.ROAD_OFFSET_Z + (pz * (squarePlotWorld.ROAD_WIDTH + squarePlotWorld.PLOT_WIDTH))) - squarePlotWorld.PLOT_WIDTH
                 - (int) Math.floor(squarePlotWorld.ROAD_WIDTH / 2);
-        return Location.at(squarePlotWorld.getWorldName(), x, squarePlotWorld.getMinBuildHeight(), z);
+        return Location.at(squarePlotWorld.getWorldName(), x, squarePlotWorld.getMinGenHeight(), z);
     }
 
 }

Core/src/main/java/com/plotsquared/core/listener/PlotListener.java

@@ -174,21 +174,9 @@ public class PlotListener {
             String greeting = plot.getFlag(GreetingFlag.class);
             if (!greeting.isEmpty()) {
                 if (!Settings.Chat.NOTIFICATION_AS_ACTIONBAR) {
-                    player.sendMessage(
-                            TranslatableCaption.of("flags.greeting_flag_format"),
-                            Template.of("world", plot.getWorldName()),
-                            Template.of("plot_id", plot.getId().toString()),
-                            Template.of("alias", plot.getAlias()),
-                            Template.of("greeting", greeting)
-                    );
+                    plot.format(StaticCaption.of(greeting), player, false).thenAcceptAsync(player::sendMessage);
                 } else {
-                    player.sendActionBar(
-                            TranslatableCaption.of("flags.greeting_flag_format"),
-                            Template.of("world", plot.getWorldName()),
-                            Template.of("plot_id", plot.getId().toString()),
-                            Template.of("alias", plot.getAlias()),
-                            Template.of("greeting", greeting)
-                    );
+                    plot.format(StaticCaption.of(greeting), player, false).thenAcceptAsync(player::sendActionBar);
                 }
             }
 
@@ -321,7 +309,7 @@ public class PlotListener {
                         }
                         if ((lastPlot != null) && plot.getId().equals(lastPlot.getId()) && plot.hasOwner()) {
                             final UUID plotOwner = plot.getOwnerAbs();
-                            String owner = PlayerManager.resolveName(plotOwner, false).getComponent(player);
+                            String owner = PlayerManager.resolveName(plotOwner, true).getComponent(player);
                             Caption header = fromFlag ? StaticCaption.of(title) : TranslatableCaption.of("titles" +
                                     ".title_entered_plot");
                             Caption subHeader = fromFlag ? StaticCaption.of(subtitle) : TranslatableCaption.of("titles" +
@@ -413,21 +401,9 @@ public class PlotListener {
                 String farewell = plot.getFlag(FarewellFlag.class);
                 if (!farewell.isEmpty()) {
                     if (!Settings.Chat.NOTIFICATION_AS_ACTIONBAR) {
-                        player.sendMessage(
-                                TranslatableCaption.of("flags.farewell_flag_format"),
-                                Template.of("world", plot.getWorldName()),
-                                Template.of("plot_id", plot.getId().toString()),
-                                Template.of("alias", plot.getAlias()),
-                                Template.of("farewell", farewell)
-                        );
+                        plot.format(StaticCaption.of(farewell), player, false).thenAcceptAsync(player::sendMessage);
                     } else {
-                        player.sendActionBar(
-                                TranslatableCaption.of("flags.farewell_flag_format"),
-                                Template.of("world", plot.getWorldName()),
-                                Template.of("plot_id", plot.getId().toString()),
-                                Template.of("alias", plot.getAlias()),
-                                Template.of("farewell", farewell)
-                        );
+                        plot.format(StaticCaption.of(farewell), player, false).thenAcceptAsync(player::sendActionBar);
                     }
                 }
 

Core/src/main/java/com/plotsquared/core/listener/WESubscriber.java

@@ -35,6 +35,7 @@ import com.plotsquared.core.plot.world.PlotAreaManager;
 import com.plotsquared.core.util.Permissions;
 import com.plotsquared.core.util.WEManager;
 import com.plotsquared.core.util.WorldUtil;
+import com.sk89q.worldedit.EditSession;
 import com.sk89q.worldedit.WorldEdit;
 import com.sk89q.worldedit.entity.Player;
 import com.sk89q.worldedit.event.extent.EditSessionEvent;
@@ -67,6 +68,9 @@ public class WESubscriber {
             WorldEdit.getInstance().getEventBus().unregister(this);
             return;
         }
+        if (event.getStage() != EditSession.Stage.BEFORE_HISTORY) {
+            return;
+        }
         World worldObj = event.getWorld();
         if (worldObj == null) {
             return;

Core/src/main/java/com/plotsquared/core/location/World.java

@@ -58,6 +58,21 @@ public interface World<T> {
      */
     @NonNull String getName();
 
+    /**
+     * Get the min world height. Inclusive.
+     *
+     * @since 6.6.0
+     */
+    int getMinHeight();
+
+
+    /**
+     * Get the max world height. Inclusive.
+     *
+     * @since 6.6.0
+     */
+    int getMaxHeight();
+
     class NullWorld<T> implements World<T> {
 
         private NullWorld() {
@@ -74,6 +89,16 @@ public interface World<T> {
             return "";
         }
 
+        @Override
+        public int getMinHeight() {
+            return 0;
+        }
+
+        @Override
+        public int getMaxHeight() {
+            return 0;
+        }
+
         @Override
         public boolean equals(final Object obj) {
             return obj instanceof NullWorld;

Core/src/main/java/com/plotsquared/core/plot/Plot.java

@@ -122,7 +122,7 @@ import static com.plotsquared.core.util.entity.EntityCategories.CAP_VEHICLE;
  */
 public class Plot {
 
-
+    @Deprecated(forRemoval = true, since = "6.6.0")
     public static final int MAX_HEIGHT = 256;
 
     private static final Logger LOGGER = LogManager.getLogger("PlotSquared/" + Plot.class.getSimpleName());
@@ -1371,7 +1371,7 @@ public class Plot {
         int z = largest.getMinimumPoint().getZ() - 1;
         PlotManager manager = getManager();
         int y = isLoaded() ? this.worldUtil.getHighestBlockSynchronous(getWorldName(), x, z) : 62;
-        if (area.allowSigns() && (y <= 0 || y >= 255)) {
+        if (area.allowSigns() && (y <= area.getMinGenHeight() || y >= area.getMaxGenHeight())) {
             y = Math.max(y, manager.getSignLoc(this).getY() - 1);
         }
         return Location.at(getWorldName(), x, y + 1, z);
@@ -1387,7 +1387,7 @@ public class Plot {
         if (isLoaded()) {
             this.worldUtil.getHighestBlock(getWorldName(), x, z, y -> {
                 int height = y;
-                if (area.allowSigns() && (y <= 0 || y >= 255)) {
+                if (area.allowSigns() && (y <= area.getMinGenHeight() || y >= area.getMaxGenHeight())) {
                     height = Math.max(y, manager.getSignLoc(this).getY() - 1);
                 }
                 result.accept(Location.at(getWorldName(), x, height + 1, z));
@@ -1465,7 +1465,7 @@ public class Plot {
                     .at(
                             bottom.getWorldName(),
                             bottom.getX() + home.getX(),
-                            bottom.getY() + home.getY(),
+                            home.getY(), // y is absolute
                             bottom.getZ() + home.getZ(),
                             home.getYaw(),
                             home.getPitch()
@@ -1619,8 +1619,8 @@ public class Plot {
     public double getVolume() {
         double count = 0;
         for (CuboidRegion region : getRegions()) {
-            count += (region.getMaximumPoint().getX() - (double) region.getMinimumPoint().getX() + 1) * (
-                    region.getMaximumPoint().getZ() - (double) region.getMinimumPoint().getZ() + 1) * MAX_HEIGHT;
+            // CuboidRegion#getArea is deprecated and we want to ensure use of correct height
+            count += region.getLength() * region.getWidth() * (area.getMaxGenHeight() - area.getMinGenHeight() + 1);
         }
         return count;
     }
@@ -1738,7 +1738,6 @@ public class Plot {
             area.addPlot(this);
             updateWorldBorder();
         }
-        this.getPlotModificationManager().setSign(player.getName());
         player.sendMessage(TranslatableCaption.of("working.claimed"), Template.of("plot", this.getId().toString()));
         if (teleport) {
             if (!auto && Settings.Teleport.ON_CLAIM) {
@@ -1786,6 +1785,7 @@ public class Plot {
             );
         }
         plotworld.getPlotManager().claimPlot(this, null);
+        this.getPlotModificationManager().setSign(player.getName());
         return true;
     }
 
@@ -2438,8 +2438,8 @@ public class Plot {
             return regions_cache;
         }
         if (!this.isMerged()) {
-            Location pos1 = this.getBottomAbs();
-            Location pos2 = this.getTopAbs();
+            Location pos1 = this.getBottomAbs().withY(getArea().getMinBuildHeight());
+            Location pos2 = this.getTopAbs().withY(getArea().getMaxBuildHeight());
             connected_cache = Sets.newHashSet(this);
             CuboidRegion rg = new CuboidRegion(pos1.getBlockVector3(), pos2.getBlockVector3());
             regions_cache = Collections.singleton(rg);

Core/src/main/java/com/plotsquared/core/plot/PlotArea.java

@@ -34,8 +34,6 @@ import com.plotsquared.core.configuration.ConfigurationNode;
 import com.plotsquared.core.configuration.ConfigurationSection;
 import com.plotsquared.core.configuration.ConfigurationUtil;
 import com.plotsquared.core.configuration.Settings;
-import com.plotsquared.core.configuration.caption.CaptionUtility;
-import com.plotsquared.core.configuration.caption.LocaleHolder;
 import com.plotsquared.core.configuration.caption.TranslatableCaption;
 import com.plotsquared.core.configuration.file.YamlConfiguration;
 import com.plotsquared.core.generator.GridPlotWorld;
@@ -54,7 +52,6 @@ import com.plotsquared.core.plot.flag.FlagParseException;
 import com.plotsquared.core.plot.flag.GlobalFlagContainer;
 import com.plotsquared.core.plot.flag.PlotFlag;
 import com.plotsquared.core.plot.flag.implementations.DoneFlag;
-import com.plotsquared.core.plot.flag.types.DoubleFlag;
 import com.plotsquared.core.queue.GlobalBlockQueue;
 import com.plotsquared.core.queue.QueueCoordinator;
 import com.plotsquared.core.util.MathMan;
@@ -144,8 +141,10 @@ public abstract class PlotArea {
     private boolean homeAllowNonmember = false;
     private BlockLoc nonmemberHome;
     private BlockLoc defaultHome;
-    private int maxBuildHeight = 256;
-    private int minBuildHeight = 1;
+    private int maxBuildHeight = PlotSquared.platform().versionMaxHeight() + 1; // Exclusive
+    private int minBuildHeight = PlotSquared.platform().versionMinHeight() + 1; // Inclusive
+    private int maxGenHeight = PlotSquared.platform().versionMaxHeight(); // Inclusive
+    private int minGenHeight = PlotSquared.platform().versionMinHeight(); // Inclusive
     private GameMode gameMode = GameModes.CREATIVE;
     private Map<String, PlotExpression> prices = new HashMap<>();
     private List<String> schematics = new ArrayList<>();
@@ -361,6 +360,8 @@ public abstract class PlotArea {
         this.worldBorder = config.getBoolean("world.border");
         this.maxBuildHeight = config.getInt("world.max_height");
         this.minBuildHeight = config.getInt("world.min_height");
+        this.minGenHeight = config.getInt("world.min_gen_height");
+        this.maxGenHeight = config.getInt("world.max_gen_height");
 
         switch (config.getString("world.gamemode").toLowerCase()) {
             case "creative", "c", "1" -> this.gameMode = GameModes.CREATIVE;
@@ -484,6 +485,8 @@ public abstract class PlotArea {
         options.put("home.nonmembers", position);
         options.put("world.max_height", this.getMaxBuildHeight());
         options.put("world.min_height", this.getMinBuildHeight());
+        options.put("world.min_gen_height", this.getMinGenHeight());
+        options.put("world.max_gen_height", this.getMaxGenHeight());
         options.put("world.gamemode", this.getGameMode().getName().toLowerCase());
         options.put("road.flags.default", null);
 
@@ -1078,8 +1081,8 @@ public abstract class PlotArea {
                     BlockVector2 pos1 = BlockVector2.at(value.getP1().getX(), value.getP1().getY());
                     BlockVector2 pos2 = BlockVector2.at(value.getP2().getX(), value.getP2().getY());
                     return new CuboidRegion(
-                            pos1.toBlockVector3(),
-                            pos2.toBlockVector3(Plot.MAX_HEIGHT - 1)
+                            pos1.toBlockVector3(getMinGenHeight()),
+                            pos2.toBlockVector3(getMaxGenHeight())
                     );
                 }
             };
@@ -1361,14 +1364,38 @@ public abstract class PlotArea {
         this.defaultHome = defaultHome;
     }
 
+    /**
+     * Get the maximum height players may build in. Exclusive.
+     */
     public int getMaxBuildHeight() {
         return this.maxBuildHeight;
     }
 
+    /**
+     * Get the minimum height players may build in. Inclusive.
+     */
     public int getMinBuildHeight() {
         return this.minBuildHeight;
     }
 
+    /**
+     * Get the min height from which P2 will generate blocks. Inclusive.
+     *
+     * @since 6.6.0
+     */
+    public int getMinGenHeight() {
+        return this.minGenHeight;
+    }
+
+    /**
+     * Get the max height to which P2 will generate blocks. Inclusive.
+     *
+     * @since 6.6.0
+     */
+    public int getMaxGenHeight() {
+        return this.maxGenHeight;
+    }
+
     public GameMode getGameMode() {
         return this.gameMode;
     }

Core/src/main/java/com/plotsquared/core/plot/PlotCluster.java

@@ -89,11 +89,17 @@ public class PlotCluster {
     }
 
     private void setRegion() {
-        this.region = RegionUtil.createRegion(this.pos1.getX(), this.pos2.getX(),
+        this.region = RegionUtil.createRegion(this.pos1.getX(), this.pos2.getX(), 0, 0,
                 this.pos1.getY(), this.pos2.getY()
         );
     }
 
+    /**
+     * Returns a region of PlotIDs
+     *
+     * @deprecated - returns region of IDs, not of actual blocks.
+     */
+    @Deprecated
     public CuboidRegion getRegion() {
         return this.region;
     }
@@ -165,7 +171,7 @@ public class PlotCluster {
         Consumer<Location> locationConsumer = toReturn ->
                 PlotSquared.platform().worldUtil().getHighestBlock(this.area.getWorldName(), toReturn.getX(), toReturn.getZ(),
                         highest -> {
-                            if (highest == 0) {
+                            if (highest <= area.getMinBuildHeight()) {
                                 highest = 63;
                             }
                             if (highest > toReturn.getY()) {
@@ -175,12 +181,12 @@ public class PlotCluster {
                             }
                         }
                 );
-        if (home.getY() == 0) {
+        if (home.getY() == Integer.MIN_VALUE) {
             // default pos
             Plot center = getCenterPlot();
             center.getHome(location -> {
                 Location toReturn = location;
-                if (toReturn.getY() == 0) {
+                if (toReturn.getY() <= area.getMinBuildHeight()) {
                     PlotManager manager = this.area.getPlotManager();
                     Location locationSign = manager.getSignLoc(center);
                     toReturn = toReturn.withY(locationSign.getY());

Core/src/main/java/com/plotsquared/core/plot/PlotInventory.java

@@ -103,9 +103,32 @@ public class PlotInventory {
         this.open = false;
     }
 
+    /**
+     * Put an item into this inventory
+     *
+     * @param index the index (= slot) where to place the item
+     * @param item the item to place
+     * @see #setItemChecked(int, PlotItemStack)
+     */
     public void setItem(int index, PlotItemStack item) {
+        setItemChecked(index, item);
+    }
+
+    /**
+     * Put an item into this inventory, while also checking the existence of the material in the current version
+     *
+     * @param index the index (= slot) where to place the item
+     * @param item  the item to place
+     * @return {@code true} if the item could be placed, otherwise {@code false}
+     * @see InventoryUtil#setItemChecked(PlotInventory, int, PlotItemStack)
+     * @since 6.5.0
+     */
+    public boolean setItemChecked(int index, PlotItemStack item) {
+        if (!this.inventoryUtil.setItemChecked(this, index, item)) {
+            return false;
+        }
         this.items[index] = item;
-        this.inventoryUtil.setItem(this, index, item);
+        return true;
     }
 
     public PlotItemStack getItem(int index) {

Core/src/main/java/com/plotsquared/core/plot/PlotItemStack.java

@@ -46,7 +46,21 @@ public class PlotItemStack {
             final String id, final int amount, final String name,
             final String... lore
     ) {
-        this.type = ItemTypes.get(id);
+        this(ItemTypes.get(id), amount, name, lore);
+    }
+
+    /**
+     * @param type   The item type
+     * @param amount Amount of items in the stack
+     * @param name   The display name of the item stack
+     * @param lore   The item stack lore
+     * @since 6.5.0
+     */
+    public PlotItemStack(
+            final ItemType type, final int amount, final String name,
+            final String... lore
+    ) {
+        this.type = type;
         this.amount = amount;
         this.name = name;
         this.lore = lore;

Core/src/main/java/com/plotsquared/core/plot/PlotModificationManager.java

@@ -69,8 +69,6 @@ import java.util.concurrent.CompletableFuture;
 import java.util.concurrent.atomic.AtomicBoolean;
 import java.util.stream.Collectors;
 
-import static com.plotsquared.core.plot.Plot.MAX_HEIGHT;
-
 /**
  * Manager that handles {@link Plot} modifications
  */
@@ -311,7 +309,7 @@ public final class PlotModificationManager {
                     return;
                 }
                 CuboidRegion region = regions.poll();
-                PlotSquared.platform().regionManager().setBiome(region, extendBiome, biome, plot.getWorldName(), this);
+                PlotSquared.platform().regionManager().setBiome(region, extendBiome, biome, plot.getArea(), this);
             }
         };
         run.run();
@@ -335,10 +333,9 @@ public final class PlotModificationManager {
             ids.add(current.getId());
         }
         this.plot.clearRatings();
-        QueueCoordinator queue = null;
+        QueueCoordinator queue = this.plot.getArea().getQueue();
         if (createSign) {
             this.removeSign();
-            queue = this.plot.getArea().getQueue();
         }
         PlotManager manager = this.plot.getArea().getPlotManager();
         if (createRoad) {
@@ -527,28 +524,6 @@ public final class PlotModificationManager {
         return false;
     }
 
-    /**
-     * Remove the south road section of a plot<br>
-     * - Used when a plot is merged<br>
-     *
-     * @param queue Nullable {@link QueueCoordinator}. If null, creates own queue and enqueues,
-     *              otherwise writes to the queue but does not enqueue.
-     */
-    public void removeRoadSouth(final @Nullable QueueCoordinator queue) {
-        if (this.plot.getArea().getType() != PlotAreaType.NORMAL && this.plot
-                .getArea()
-                .getTerrain() == PlotAreaTerrainType.ROAD) {
-            Plot other = this.plot.getRelative(Direction.SOUTH);
-            Location bot = other.getBottomAbs();
-            Location top = this.plot.getTopAbs();
-            Location pos1 = Location.at(this.plot.getWorldName(), bot.getX(), 0, top.getZ());
-            Location pos2 = Location.at(this.plot.getWorldName(), top.getX(), MAX_HEIGHT, bot.getZ());
-            PlotSquared.platform().regionManager().regenerateRegion(pos1, pos2, true, null);
-        } else if (this.plot.getArea().getTerrain() != PlotAreaTerrainType.ALL) { // no road generated => no road to remove
-            this.plot.getManager().removeRoadSouth(this.plot, queue);
-        }
-    }
-
     /**
      * Auto merge a plot in a specific direction.
      *
@@ -915,6 +890,28 @@ public final class PlotModificationManager {
         return this.setComponent(component, parsed.toPattern(), actor, queue);
     }
 
+    /**
+     * Remove the south road section of a plot<br>
+     * - Used when a plot is merged<br>
+     *
+     * @param queue Nullable {@link QueueCoordinator}. If null, creates own queue and enqueues,
+     *              otherwise writes to the queue but does not enqueue.
+     */
+    public void removeRoadSouth(final @Nullable QueueCoordinator queue) {
+        if (this.plot.getArea().getType() != PlotAreaType.NORMAL && this.plot
+                .getArea()
+                .getTerrain() == PlotAreaTerrainType.ROAD) {
+            Plot other = this.plot.getRelative(Direction.SOUTH);
+            Location bot = other.getBottomAbs();
+            Location top = this.plot.getTopAbs();
+            Location pos1 = Location.at(this.plot.getWorldName(), bot.getX(), plot.getArea().getMinGenHeight(), top.getZ());
+            Location pos2 = Location.at(this.plot.getWorldName(), top.getX(), plot.getArea().getMaxGenHeight(), bot.getZ());
+            PlotSquared.platform().regionManager().regenerateRegion(pos1, pos2, true, null);
+        } else if (this.plot.getArea().getTerrain() != PlotAreaTerrainType.ALL) { // no road generated => no road to remove
+            this.plot.getManager().removeRoadSouth(this.plot, queue);
+        }
+    }
+
     /**
      * Remove the east road section of a plot<br>
      * - Used when a plot is merged<br>
@@ -929,8 +926,8 @@ public final class PlotModificationManager {
             Plot other = this.plot.getRelative(Direction.EAST);
             Location bot = other.getBottomAbs();
             Location top = this.plot.getTopAbs();
-            Location pos1 = Location.at(this.plot.getWorldName(), top.getX(), 0, bot.getZ());
-            Location pos2 = Location.at(this.plot.getWorldName(), bot.getX(), MAX_HEIGHT, top.getZ());
+            Location pos1 = Location.at(this.plot.getWorldName(), top.getX(), plot.getArea().getMinGenHeight(), bot.getZ());
+            Location pos2 = Location.at(this.plot.getWorldName(), bot.getX(), plot.getArea().getMaxGenHeight(), top.getZ());
             PlotSquared.platform().regionManager().regenerateRegion(pos1, pos2, true, null);
         } else if (this.plot.getArea().getTerrain() != PlotAreaTerrainType.ALL) { // no road generated => no road to remove
             this.plot.getArea().getPlotManager().removeRoadEast(this.plot, queue);
@@ -948,8 +945,8 @@ public final class PlotModificationManager {
                 .getArea()
                 .getTerrain() == PlotAreaTerrainType.ROAD) {
             Plot other = this.plot.getRelative(1, 1);
-            Location pos1 = this.plot.getTopAbs().add(1, 0, 1).withY(0);
-            Location pos2 = other.getBottomAbs().subtract(1, 0, 1).withY(MAX_HEIGHT);
+            Location pos1 = this.plot.getTopAbs().add(1, 0, 1);
+            Location pos2 = other.getBottomAbs().subtract(1, 0, 1);
             PlotSquared.platform().regionManager().regenerateRegion(pos1, pos2, true, null);
         } else if (this.plot.getArea().getTerrain() != PlotAreaTerrainType.ALL) { // no road generated => no road to remove
             this.plot.getArea().getPlotManager().removeRoadSouthEast(this.plot, queue);

Core/src/main/java/com/plotsquared/core/plot/PlotWorld.java

@@ -105,31 +105,29 @@ public abstract class PlotWorld {
         return this.world;
     }
 
+    @Override
     public boolean equals(final Object o) {
-        if (o == this) {
+        if (this == o) {
             return true;
         }
-        if (!(o instanceof final PlotWorld other)) {
+        if (o == null || getClass() != o.getClass()) {
             return false;
         }
-        if (!other.canEqual(this)) {
-            return false;
-        }
-        final Object this$world = this.getWorld();
-        final Object other$world = other.getWorld();
-        return Objects.equals(this$world, other$world);
+        final PlotWorld plotWorld = (PlotWorld) o;
+        return world.equals(plotWorld.world);
     }
 
+    @Override
+    public int hashCode() {
+        return world.hashCode();
+    }
+
+    /**
+     * @deprecated This method is not meant to be invoked or overridden, with no replacement.
+     */
+    @Deprecated(forRemoval = true, since = "6.6.0")
     protected boolean canEqual(final Object other) {
         return other instanceof PlotWorld;
     }
 
-    public int hashCode() {
-        final int PRIME = 59;
-        int result = 1;
-        final Object $world = this.getWorld();
-        result = result * PRIME + ($world == null ? 43 : $world.hashCode());
-        return result;
-    }
-
 }

Core/src/main/java/com/plotsquared/core/plot/expiration/ExpireManager.java

@@ -136,18 +136,18 @@ public class ExpireManager {
     }
 
     public void confirmExpiry(final PlotPlayer<?> pp) {
-        try (final MetaDataAccess<Boolean> metaDataAccess = pp.accessTemporaryMetaData(
-                PlayerMetaDataKeys.TEMPORARY_IGNORE_EXPIRE_TASK)) {
-            if (metaDataAccess.isPresent()) {
-                return;
-            }
-            if (plotsToDelete != null && !plotsToDelete.isEmpty() && pp.hasPermission("plots.admin.command.autoclear")) {
-                final int num = plotsToDelete.size();
-                while (!plotsToDelete.isEmpty()) {
-                    Iterator<Plot> iter = plotsToDelete.iterator();
-                    final Plot current = iter.next();
-                    if (!isExpired(new ArrayDeque<>(tasks), current).isEmpty()) {
-                        TaskManager.runTask(() -> {
+        TaskManager.runTask(() -> {
+            try (final MetaDataAccess<Boolean> metaDataAccess = pp.accessTemporaryMetaData(
+                    PlayerMetaDataKeys.TEMPORARY_IGNORE_EXPIRE_TASK)) {
+                if (metaDataAccess.isPresent()) {
+                    return;
+                }
+                if (plotsToDelete != null && !plotsToDelete.isEmpty() && pp.hasPermission("plots.admin.command.autoclear")) {
+                    final int num = plotsToDelete.size();
+                    while (!plotsToDelete.isEmpty()) {
+                        Iterator<Plot> iter = plotsToDelete.iterator();
+                        final Plot current = iter.next();
+                        if (!isExpired(new ArrayDeque<>(tasks), current).isEmpty()) {
                             metaDataAccess.set(true);
                             current.getCenter(pp::teleport);
                             metaDataAccess.remove();
@@ -171,15 +171,15 @@ public class ExpireManager {
                                     cmd_keep,
                                     cmd_no_show_expir
                             );
-                        });
-                        return;
-                    } else {
-                        iter.remove();
+                            return;
+                        } else {
+                            iter.remove();
+                        }
                     }
+                    plotsToDelete.clear();
                 }
-                plotsToDelete.clear();
             }
-        }
+        });
     }
 
 
@@ -307,6 +307,7 @@ public class ExpireManager {
         this.running = 2;
         TaskManager.runTaskAsync(new Runnable() {
             private ConcurrentLinkedDeque<Plot> plots = null;
+
             @Override
             public void run() {
                 final Runnable task = this;

Core/src/main/java/com/plotsquared/core/plot/flag/FlagContainer.java

@@ -371,33 +371,31 @@ public class FlagContainer {
         }
     }
 
+    @Override
     public boolean equals(final Object o) {
-        if (o == this) {
+        if (this == o) {
             return true;
         }
-        if (!(o instanceof final FlagContainer other)) {
+        if (o == null || getClass() != o.getClass()) {
             return false;
         }
-        if (!other.canEqual(this)) {
-            return false;
-        }
-        final Object this$flagMap = this.getFlagMap();
-        final Object other$flagMap = other.getFlagMap();
-        return Objects.equals(this$flagMap, other$flagMap);
+        final FlagContainer that = (FlagContainer) o;
+        return flagMap.equals(that.flagMap);
     }
 
+    @Override
+    public int hashCode() {
+        return flagMap.hashCode();
+    }
+
+    /**
+     * @deprecated This method is not meant to be invoked or overridden, with no replacement.
+     */
+    @Deprecated(forRemoval = true, since = "6.6.0")
     protected boolean canEqual(final Object other) {
         return other instanceof FlagContainer;
     }
 
-    public int hashCode() {
-        final int PRIME = 59;
-        int result = 1;
-        final Object $flagMap = this.getFlagMap();
-        result = result * PRIME + ($flagMap == null ? 43 : $flagMap.hashCode());
-        return result;
-    }
-
     /**
      * Update event types used in {@link PlotFlagUpdateHandler}.
      */

Core/src/main/java/com/plotsquared/core/plot/flag/GlobalFlagContainer.java

@@ -134,17 +134,28 @@ public final class GlobalFlagContainer extends FlagContainer {
         stringClassMap = new HashMap<>();
 
         // Register all default flags here
+        // Block type list flags
+        this.addFlag(BreakFlag.BREAK_NONE);
+        this.addFlag(UseFlag.USE_NONE);
+        this.addFlag(PlaceFlag.PLACE_NONE);
+
         // Boolean flags
-        this.addFlag(ExplosionFlag.EXPLOSION_FALSE);
-        this.addFlag(UntrustedVisitFlag.UNTRUSTED_VISIT_FLAG_TRUE);
-        this.addFlag(DenyExitFlag.DENY_EXIT_FLAG_FALSE);
         this.addFlag(AnimalAttackFlag.ANIMAL_ATTACK_FALSE);
         this.addFlag(AnimalInteractFlag.ANIMAL_INTERACT_FALSE);
         this.addFlag(BlockBurnFlag.BLOCK_BURN_FALSE);
         this.addFlag(BlockIgnitionFlag.BLOCK_IGNITION_TRUE);
+        this.addFlag(ChatFlag.CHAT_FLAG_TRUE);
+        this.addFlag(CopperOxideFlag.COPPER_OXIDE_FALSE);
+        this.addFlag(CoralDryFlag.CORAL_DRY_FALSE);
+        this.addFlag(CropGrowFlag.CROP_GROW_TRUE);
+        this.addFlag(DenyExitFlag.DENY_EXIT_FLAG_FALSE);
+        this.addFlag(DenyPortalsFlag.DENY_PORTALS_FALSE);
+        this.addFlag(DenyPortalTravelFlag.DENY_PORTAL_TRAVEL_FALSE);
         this.addFlag(DeviceInteractFlag.DEVICE_INTERACT_FALSE);
         this.addFlag(DisablePhysicsFlag.DISABLE_PHYSICS_FALSE);
         this.addFlag(DropProtectionFlag.DROP_PROTECTION_FALSE);
+        this.addFlag(EntityChangeBlockFlag.ENTITY_CHANGE_BLOCK_FALSE);
+        this.addFlag(ExplosionFlag.EXPLOSION_FALSE);
         this.addFlag(ForcefieldFlag.FORCEFIELD_FALSE);
         this.addFlag(GrassGrowFlag.GRASS_GROW_TRUE);
         this.addFlag(HangingBreakFlag.HANGING_BREAK_FALSE);
@@ -154,52 +165,53 @@ public final class GlobalFlagContainer extends FlagContainer {
         this.addFlag(HostileInteractFlag.HOSTILE_INTERACT_FALSE);
         this.addFlag(IceFormFlag.ICE_FORM_FALSE);
         this.addFlag(IceMeltFlag.ICE_MELT_FALSE);
+        this.addFlag(InstabreakFlag.INSTABREAK_FALSE);
+        this.addFlag(InvincibleFlag.INVINCIBLE_FALSE);
+        this.addFlag(ItemDropFlag.ITEM_DROP_TRUE);
+        this.addFlag(KeepInventoryFlag.KEEP_INVENTORY_FALSE);
         this.addFlag(KelpGrowFlag.KELP_GROW_TRUE);
-        this.addFlag(RedstoneFlag.REDSTONE_TRUE);
-        this.addFlag(ServerPlotFlag.SERVER_PLOT_FALSE);
+        this.addFlag(LeafDecayFlag.LEAF_DECAY_TRUE);
+        this.addFlag(LecternReadBookFlag.LECTERN_READ_BOOK_FALSE);
         this.addFlag(MiscBreakFlag.MISC_BREAK_FALSE);
         this.addFlag(MobBreakFlag.MOB_BREAK_FALSE);
         this.addFlag(MobPlaceFlag.MOB_PLACE_FALSE);
+        this.addFlag(MiscInteractFlag.MISC_INTERACT_FALSE);
+        this.addFlag(MiscPlaceFlag.MISC_PLACE_FALSE);
         this.addFlag(MycelGrowFlag.MYCEL_GROW_TRUE);
         this.addFlag(NotifyEnterFlag.NOTIFY_ENTER_FALSE);
         this.addFlag(NotifyLeaveFlag.NOTIFY_LEAVE_FALSE);
         this.addFlag(NoWorldeditFlag.NO_WORLDEDIT_FALSE);
         this.addFlag(PlayerInteractFlag.PLAYER_INTERACT_FALSE);
+        this.addFlag(PreventCreativeCopyFlag.PREVENT_CREATIVE_COPY_FALSE);
         this.addFlag(PveFlag.PVE_FALSE);
         this.addFlag(PvpFlag.PVP_FALSE);
+        this.addFlag(RedstoneFlag.REDSTONE_TRUE);
+        this.addFlag(ServerPlotFlag.SERVER_PLOT_FALSE);
         this.addFlag(SnowFormFlag.SNOW_FORM_FALSE);
         this.addFlag(SnowMeltFlag.SNOW_MELT_TRUE);
         this.addFlag(SoilDryFlag.SOIL_DRY_FALSE);
-        this.addFlag(CoralDryFlag.CORAL_DRY_FALSE);
         this.addFlag(TamedAttackFlag.TAMED_ATTACK_FALSE);
         this.addFlag(TamedInteractFlag.TAMED_INTERACT_FALSE);
+        this.addFlag(UntrustedVisitFlag.UNTRUSTED_VISIT_FLAG_TRUE);
         this.addFlag(VehicleBreakFlag.VEHICLE_BREAK_FALSE);
         this.addFlag(VehiclePlaceFlag.VEHICLE_PLACE_FALSE);
         this.addFlag(VehicleUseFlag.VEHICLE_USE_FALSE);
         this.addFlag(VillagerInteractFlag.VILLAGER_INTERACT_FALSE);
         this.addFlag(VineGrowFlag.VINE_GROW_TRUE);
-        this.addFlag(ItemDropFlag.ITEM_DROP_TRUE);
-        this.addFlag(InstabreakFlag.INSTABREAK_FALSE);
-        this.addFlag(InvincibleFlag.INVINCIBLE_FALSE);
-        this.addFlag(ChatFlag.CHAT_FLAG_TRUE);
-        this.addFlag(MiscPlaceFlag.MISC_PLACE_FALSE);
-        this.addFlag(MiscInteractFlag.MISC_INTERACT_FALSE);
-        this.addFlag(KeepInventoryFlag.KEEP_INVENTORY_FALSE);
-        this.addFlag(PreventCreativeCopyFlag.PREVENT_CREATIVE_COPY_FALSE);
-        this.addFlag(LeafDecayFlag.LEAF_DECAY_TRUE);
-        this.addFlag(CropGrowFlag.CROP_GROW_TRUE);
-        this.addFlag(DenyPortalTravelFlag.DENY_PORTAL_TRAVEL_FALSE);
-        this.addFlag(DenyPortalsFlag.DENY_PORTALS_FALSE);
-        this.addFlag(LecternReadBookFlag.LECTERN_READ_BOOK_FALSE);
-        this.addFlag(EntityChangeBlockFlag.ENTITY_CHANGE_BLOCK_FALSE);
-        this.addFlag(CopperOxideFlag.COPPER_OXIDE_FALSE);
+
+        // Double flags
+        this.addFlag(PriceFlag.PRICE_NOT_BUYABLE);
 
         // Enum Flags
-        this.addFlag(WeatherFlag.PLOT_WEATHER_FLAG_OFF);
         this.addFlag(DenyTeleportFlag.DENY_TELEPORT_FLAG_NONE);
-        this.addFlag(TitlesFlag.TITLES_NONE);
         this.addFlag(FlyFlag.FLIGHT_FLAG_DEFAULT);
         this.addFlag(LiquidFlowFlag.LIQUID_FLOW_DEFAULT);
+        this.addFlag(TitlesFlag.TITLES_NONE);
+        this.addFlag(WeatherFlag.PLOT_WEATHER_FLAG_OFF);
+
+        // Internal flags
+        this.addFlag(new AnalysisFlag(Collections.emptyList()));
+        this.addFlag(new DoneFlag(""));
 
         // Integer flags
         this.addFlag(AnimalCapFlag.ANIMAL_CAP_UNLIMITED);
@@ -210,22 +222,10 @@ public final class GlobalFlagContainer extends FlagContainer {
         this.addFlag(TimeFlag.TIME_DISABLED);
         this.addFlag(VehicleCapFlag.VEHICLE_CAP_UNLIMITED);
 
-        // Timed flags
-        this.addFlag(FeedFlag.FEED_NOTHING);
-        this.addFlag(HealFlag.HEAL_NOTHING);
-
-        // Double flags
-        this.addFlag(PriceFlag.PRICE_NOT_BUYABLE);
-
-        // Block type list flags
-        this.addFlag(BreakFlag.BREAK_NONE);
-        this.addFlag(PlaceFlag.PLACE_NONE);
-        this.addFlag(UseFlag.USE_NONE);
-
         // Misc
+        this.addFlag(BlockedCmdsFlag.BLOCKED_CMDS_FLAG_NONE);
         this.addFlag(GamemodeFlag.GAMEMODE_FLAG_DEFAULT);
         this.addFlag(GuestGamemodeFlag.GUEST_GAMEMODE_FLAG_DEFAULT);
-        this.addFlag(BlockedCmdsFlag.BLOCKED_CMDS_FLAG_NONE);
         this.addFlag(KeepFlag.KEEP_FLAG_FALSE);
         this.addFlag(MusicFlag.MUSIC_FLAG_NONE);
 
@@ -235,9 +235,9 @@ public final class GlobalFlagContainer extends FlagContainer {
         this.addFlag(FarewellFlag.FAREWELL_FLAG_EMPTY);
         this.addFlag(PlotTitleFlag.TITLE_FLAG_DEFAULT);
 
-        // Internal flags
-        this.addFlag(new AnalysisFlag(Collections.emptyList()));
-        this.addFlag(new DoneFlag(""));
+        // Timed flags
+        this.addFlag(FeedFlag.FEED_NOTHING);
+        this.addFlag(HealFlag.HEAL_NOTHING);
     }
 
     public static void setup() {

Core/src/main/java/com/plotsquared/core/plot/flag/PlotFlag.java

@@ -31,6 +31,7 @@ import org.checkerframework.checker.nullness.qual.NonNull;
 
 import java.util.Collection;
 import java.util.Collections;
+import java.util.Objects;
 
 /**
  * A plot flag is any property that can be assigned
@@ -200,34 +201,30 @@ public abstract class PlotFlag<T, F extends PlotFlag<T, F>> {
         return Collections.emptyList();
     }
 
+    @Override
     public boolean equals(final Object o) {
-        if (o == this) {
+        if (this == o) {
             return true;
         }
-        if (!(o instanceof final PlotFlag<?, ?> other)) {
+        if (o == null || getClass() != o.getClass()) {
             return false;
         }
-        if (!other.canEqual(this)) {
-            return false;
-        }
-        final Object this$value = this.getValue();
-        final Object other$value = other.getValue();
-        if (this$value == null ? other$value != null : !this$value.equals(other$value)) {
-            return false;
-        }
-        return true;
+        final PlotFlag<?, ?> plotFlag = (PlotFlag<?, ?>) o;
+        return value.equals(plotFlag.value);
     }
 
+    @Override
+    public int hashCode() {
+        return value.hashCode();
+    }
+
+    /**
+     * @deprecated This method is not meant to be invoked or overridden, with no replacement.
+     */
+    @Deprecated(forRemoval = true, since = "6.6.0")
     protected boolean canEqual(final Object other) {
         return other instanceof PlotFlag;
     }
 
-    public int hashCode() {
-        final int PRIME = 59;
-        int result = 1;
-        final Object $value = this.getValue();
-        result = result * PRIME + ($value == null ? 43 : $value.hashCode());
-        return result;
-    }
 
 }

Core/src/main/java/com/plotsquared/core/queue/BasicQueueCoordinator.java

@@ -101,7 +101,7 @@ public abstract class BasicQueueCoordinator extends QueueCoordinator {
 
     @Override
     public boolean setBlock(int x, int y, int z, @NonNull BaseBlock id) {
-        if ((y > 255) || (y < 0)) {
+        if ((y > world.getMaxY()) || (y < world.getMinY())) {
             return false;
         }
         LocalChunk chunk = getChunk(x >> 4, z >> 4);
@@ -121,7 +121,7 @@ public abstract class BasicQueueCoordinator extends QueueCoordinator {
     @Override
     public boolean setBiome(int x, int z, @NonNull BiomeType biomeType) {
         LocalChunk chunk = getChunk(x >> 4, z >> 4);
-        for (int y = 0; y < 256; y++) {
+        for (int y = world.getMinY(); y <= world.getMaxY(); y++) {
             chunk.setBiome(x & 15, y, z & 15, biomeType);
         }
         settingBiomes = true;

Core/src/main/java/com/plotsquared/core/queue/ChunkQueueCoordinator.java

@@ -54,12 +54,12 @@ public class ChunkQueueCoordinator extends ScopedQueueCoordinator {
             @NonNull BlockVector3 top,
             boolean biomes
     ) {
-        super(null, Location.at("", 0, 0, 0), Location.at("", 15, 255, 15));
+        super(null, Location.at("", 0, weWorld.getMinY(), 0), Location.at("", 15, weWorld.getMaxY(), 15));
         this.weWorld = weWorld;
         this.width = top.getX() - bot.getX() + 1;
         this.length = top.getZ() - bot.getZ() + 1;
-        this.result = new BlockState[256][width][length];
-        this.biomeResult = biomes ? new BiomeType[256][width][length] : null;
+        this.result = new BlockState[weWorld.getMaxY() - weWorld.getMinY() + 1][width][length];
+        this.biomeResult = biomes ? new BiomeType[weWorld.getMaxY() - weWorld.getMinY() + 1][width][length] : null;
         this.bot = bot;
         this.top = top;
     }
@@ -71,7 +71,7 @@ public class ChunkQueueCoordinator extends ScopedQueueCoordinator {
     @Override
     public boolean setBiome(int x, int z, @NonNull BiomeType biomeType) {
         if (this.biomeResult != null) {
-            for (int y = 0; y < 256; y++) {
+            for (int y = weWorld.getMinY(); y <= weWorld.getMaxY(); y++) {
                 this.storeCacheBiome(x, y, z, biomeType);
             }
             return true;
@@ -101,9 +101,10 @@ public class ChunkQueueCoordinator extends ScopedQueueCoordinator {
     }
 
     private void storeCache(final int x, final int y, final int z, final @NonNull BlockState id) {
-        BlockState[][] resultY = result[y];
+        int yIndex = getYIndex(y);
+        BlockState[][] resultY = result[yIndex];
         if (resultY == null) {
-            result[y] = resultY = new BlockState[length][];
+            result[yIndex] = resultY = new BlockState[length][];
         }
         BlockState[] resultYZ = resultY[z];
         if (resultYZ == null) {
@@ -113,9 +114,10 @@ public class ChunkQueueCoordinator extends ScopedQueueCoordinator {
     }
 
     private void storeCacheBiome(final int x, final int y, final int z, final @NonNull BiomeType id) {
-        BiomeType[][] resultY = biomeResult[y];
+        int yIndex = getYIndex(y);
+        BiomeType[][] resultY = biomeResult[yIndex];
         if (resultY == null) {
-            biomeResult[y] = resultY = new BiomeType[length][];
+            biomeResult[yIndex] = resultY = new BiomeType[length][];
         }
         BiomeType[] resultYZ = resultY[z];
         if (resultYZ == null) {
@@ -132,7 +134,7 @@ public class ChunkQueueCoordinator extends ScopedQueueCoordinator {
 
     @Override
     public @Nullable BlockState getBlock(int x, int y, int z) {
-        BlockState[][] blocksY = result[y];
+        BlockState[][] blocksY = result[getYIndex(y)];
         if (blocksY != null) {
             BlockState[] blocksYZ = blocksY[z];
             if (blocksYZ != null) {
@@ -157,4 +159,8 @@ public class ChunkQueueCoordinator extends ScopedQueueCoordinator {
         return Location.at(getWorld().getName(), bot.getX(), bot.getY(), bot.getZ());
     }
 
+    private int getYIndex(int y) {
+        return y - weWorld.getMinY();
+    }
+
 }

Core/src/main/java/com/plotsquared/core/queue/LocalChunk.java

@@ -42,6 +42,7 @@ public class LocalChunk {
     private final QueueCoordinator parent;
     private final int x;
     private final int z;
+    private final int minSection;
 
     private final BaseBlock[][] baseblocks;
     private final BiomeType[][] biomes;
@@ -52,8 +53,10 @@ public class LocalChunk {
         this.parent = parent;
         this.x = x;
         this.z = z;
-        baseblocks = new BaseBlock[16][];
-        biomes = new BiomeType[16][];
+        this.minSection = parent.getMinLayer();
+        int sections = parent.getMaxLayer() - parent.getMinLayer() + 1;
+        baseblocks = new BaseBlock[sections][];
+        biomes = new BiomeType[sections][];
     }
 
     public @NonNull QueueCoordinator getParent() {
@@ -68,6 +71,15 @@ public class LocalChunk {
         return this.z;
     }
 
+    /**
+     * Get the minimum layer position stored (usually -4 or 0).
+     *
+     * @since 6.6.0
+     */
+    public int getMinSection() {
+        return this.minSection;
+    }
+
     public @NonNull BaseBlock[][] getBaseblocks() {
         return this.baseblocks;
     }
@@ -81,7 +93,7 @@ public class LocalChunk {
     }
 
     public void setBiome(final int x, final int y, final int z, final @NonNull BiomeType biomeType) {
-        final int i = y >> 4;
+        final int i = getLayerIndex(y);
         final int j = ChunkUtil.getJ(x, y, z);
         BiomeType[] array = this.biomes[i];
         if (array == null) {
@@ -96,7 +108,7 @@ public class LocalChunk {
     }
 
     public void setBlock(final int x, final int y, final int z, final @NonNull BaseBlock baseBlock) {
-        final int i = y >> 4;
+        final int i = getLayerIndex(y);
         final int j = ChunkUtil.getJ(x, y, z);
         BaseBlock[] array = baseblocks[i];
         if (array == null) {
@@ -117,4 +129,8 @@ public class LocalChunk {
         return this.entities;
     }
 
+    private int getLayerIndex(final int y) {
+        return (y >> 4) - minSection;
+    }
+
 }

Core/src/main/java/com/plotsquared/core/queue/LocationOffsetDelegateQueueCoordinator.java

@@ -87,11 +87,14 @@ public class LocationOffsetDelegateQueueCoordinator extends DelegateQueueCoordin
 
     @Override
     public boolean setBiome(int x, int z, @NonNull BiomeType biome) {
-        boolean result = true;
-        for (int y = 0; y < 256; y++) {
-            result &= this.setBiome(x, y, z, biome);
+        try {
+            if (canPlace[x - blockX][z - blockZ]) {
+                return super.setBiome(x, z, biome);
+            }
+        } catch (final Exception e) {
+            throw e;
         }
-        return result;
+        return false;
     }
 
     @Override

Core/src/main/java/com/plotsquared/core/queue/QueueCoordinator.java

@@ -75,12 +75,29 @@ public abstract class QueueCoordinator {
      * @param x chunk x coordinate
      * @param z chunk z coordinate
      * @return a new {@link ScopedQueueCoordinator}
+     * @deprecated Use {@link ScopedQueueCoordinator#getForChunk(int, int, int, int)}
      */
+    @Deprecated(forRemoval = true, since = "6.6.0")
     public ScopedQueueCoordinator getForChunk(int x, int z) {
+        if (getWorld() == null) {
+            return getForChunk(x, z, PlotSquared.platform().versionMinHeight(), PlotSquared.platform().versionMaxHeight());
+        }
+        return getForChunk(x, z, getWorld().getMinY(), getWorld().getMaxY());
+    }
+
+    /**
+     * Get a {@link ScopedQueueCoordinator} limited to the chunk at the specific chunk Coordinates
+     *
+     * @param x chunk x coordinate
+     * @param z chunk z coordinate
+     * @return a new {@link ScopedQueueCoordinator}
+     * @since 6.6.0
+     */
+    public ScopedQueueCoordinator getForChunk(int x, int z, int minY, int maxY) {
         int bx = x << 4;
         int bz = z << 4;
-        return new ScopedQueueCoordinator(this, Location.at(getWorld().getName(), bx, 0, bz),
-                Location.at(getWorld().getName(), bx + 15, 255, bz + 255)
+        return new ScopedQueueCoordinator(this, Location.at(getWorld().getName(), bx, minY, bz),
+                Location.at(getWorld().getName(), bx + 15, maxY, bz + 15)
         );
     }
 
@@ -404,7 +421,7 @@ public abstract class QueueCoordinator {
      */
     public void setCuboid(@NonNull Location pos1, @NonNull Location pos2, @NonNull BlockState block) {
         int yMin = Math.min(pos1.getY(), pos2.getY());
-        int yMax = Math.min(255, Math.max(pos1.getY(), pos2.getY()));
+        int yMax = Math.max(pos1.getY(), pos2.getY());
         int xMin = Math.min(pos1.getX(), pos2.getX());
         int xMax = Math.max(pos1.getX(), pos2.getX());
         int zMin = Math.min(pos1.getZ(), pos2.getZ());
@@ -427,7 +444,7 @@ public abstract class QueueCoordinator {
      */
     public void setCuboid(@NonNull Location pos1, @NonNull Location pos2, @NonNull Pattern blocks) {
         int yMin = Math.min(pos1.getY(), pos2.getY());
-        int yMax = Math.min(255, Math.max(pos1.getY(), pos2.getY()));
+        int yMax = Math.max(pos1.getY(), pos2.getY());
         int xMin = Math.min(pos1.getX(), pos2.getX());
         int xMax = Math.max(pos1.getX(), pos2.getX());
         int zMin = Math.min(pos1.getZ(), pos2.getZ());
@@ -450,7 +467,7 @@ public abstract class QueueCoordinator {
      */
     public void setBiomeCuboid(@NonNull Location pos1, @NonNull Location pos2, @NonNull BiomeType biome) {
         int yMin = Math.min(pos1.getY(), pos2.getY());
-        int yMax = Math.min(255, Math.max(pos1.getY(), pos2.getY()));
+        int yMax = Math.max(pos1.getY(), pos2.getY());
         int xMin = Math.min(pos1.getX(), pos2.getX());
         int xMax = Math.max(pos1.getX(), pos2.getX());
         int zMin = Math.min(pos1.getZ(), pos2.getZ());
@@ -464,4 +481,32 @@ public abstract class QueueCoordinator {
         }
     }
 
+    /**
+     * Get the min Y limit associated with the queue
+     */
+    protected int getMinY() {
+        return getWorld() != null ? getWorld().getMinY() : PlotSquared.platform().versionMinHeight();
+    }
+
+    /**
+     * Get the max Y limit associated with the queue
+     */
+    protected int getMaxY() {
+        return getWorld() != null ? getWorld().getMinY() : PlotSquared.platform().versionMaxHeight();
+    }
+
+    /**
+     * Get the min chunk layer associated with the queue. Usually 0 or -4;
+     */
+    protected int getMinLayer() {
+        return (getWorld() != null ? getWorld().getMinY() : PlotSquared.platform().versionMinHeight()) >> 4;
+    }
+
+    /**
+     * Get the max chunk layer associated with the queue. Usually 15 or 19
+     */
+    protected int getMaxLayer() {
+        return (getWorld() != null ? getWorld().getMaxY() : PlotSquared.platform().versionMaxHeight()) >> 4;
+    }
+
 }

Core/src/main/java/com/plotsquared/core/queue/ScopedQueueCoordinator.java

@@ -39,6 +39,8 @@ import org.checkerframework.checker.nullness.qual.Nullable;
  */
 public class ScopedQueueCoordinator extends DelegateQueueCoordinator {
 
+    private final Location min;
+    private final Location max;
     private final int minX;
     private final int minY;
     private final int minZ;
@@ -51,8 +53,13 @@ public class ScopedQueueCoordinator extends DelegateQueueCoordinator {
     private final int dy;
     private final int dz;
 
+    /**
+     * Create a new ScopedQueueCoordinator instance that delegates to a given QueueCoordinator. Locations are inclusive.
+     */
     public ScopedQueueCoordinator(@Nullable QueueCoordinator parent, @NonNull Location min, @NonNull Location max) {
         super(parent);
+        this.min = min;
+        this.max = max;
         this.minX = min.getX();
         this.minY = min.getY();
         this.minZ = min.getZ();
@@ -112,11 +119,11 @@ public class ScopedQueueCoordinator extends DelegateQueueCoordinator {
     }
 
     public @NonNull Location getMin() {
-        return Location.at(this.getWorld().getName(), this.minX, this.minY, this.minZ);
+        return min;
     }
 
     public @NonNull Location getMax() {
-        return Location.at(this.getWorld().getName(), this.maxX, this.maxY, this.maxZ);
+        return max;
     }
 
 }

Core/src/main/java/com/plotsquared/core/util/ChunkManager.java

@@ -31,6 +31,7 @@ import com.plotsquared.core.queue.QueueCoordinator;
 import com.plotsquared.core.queue.ScopedQueueCoordinator;
 import com.plotsquared.core.util.task.RunnableVal;
 import com.sk89q.worldedit.math.BlockVector2;
+import com.sk89q.worldedit.world.World;
 
 import java.util.Map;
 import java.util.concurrent.CompletableFuture;
@@ -47,18 +48,16 @@ public abstract class ChunkManager {
             String world,
             BlockVector2 loc
     ) {
-        QueueCoordinator queue = PlotSquared.platform().globalBlockQueue().getNewQueue(PlotSquared
-                .platform()
-                .worldUtil()
-                .getWeWorld(world));
+        World weWorld = PlotSquared.platform().worldUtil().getWeWorld(world);
+        QueueCoordinator queue = PlotSquared.platform().globalBlockQueue().getNewQueue(weWorld);
         if (PlotSquared.get().getPlotAreaManager().isAugmented(world) && PlotSquared.get().isNonStandardGeneration(world, loc)) {
             int blockX = loc.getX() << 4;
             int blockZ = loc.getZ() << 4;
             ScopedQueueCoordinator scoped =
                     new ScopedQueueCoordinator(
                             queue,
-                            Location.at(world, blockX, 0, blockZ),
-                            Location.at(world, blockX + 15, 255, blockZ + 15)
+                            Location.at(world, blockX, weWorld.getMinY(), blockZ),
+                            Location.at(world, blockX + 15, weWorld.getMaxY(), blockZ + 15)
                     );
             if (force != null) {
                 force.run(scoped);

Core/src/main/java/com/plotsquared/core/util/ChunkUtil.java

@@ -39,30 +39,27 @@ public class ChunkUtil {
      * - Used for efficient world generation<br>
      */
     private static final short[] x_loc;
-    private static final short[][] y_loc;
+    private static final short[] y_loc;
     private static final short[] z_loc;
     private static final short[][][] CACHE_J;
 
     static {
         x_loc = new short[4096];
-        y_loc = new short[16][4096];
+        y_loc = new short[4096];
         z_loc = new short[4096];
-        for (int i = 0; i < 16; i++) {
-            int i4 = i << 4;
-            for (int j = 0; j < 4096; j++) {
-                int y = i4 + (j >> 8);
-                int a = j - ((y & 0xF) << 8);
-                int z1 = a >> 4;
-                int x1 = a - (z1 << 4);
-                x_loc[j] = (short) x1;
-                y_loc[i][j] = (short) y;
-                z_loc[j] = (short) z1;
-            }
+        for (int j = 0; j < 4096; j++) {
+            int y = j >> 8;
+            int a = j - ((y & 0xF) << 8);
+            int z1 = a >> 4;
+            int x1 = a - (z1 << 4);
+            x_loc[j] = (short) x1;
+            y_loc[j] = (short) y;
+            z_loc[j] = (short) z1;
         }
-        CACHE_J = new short[256][16][16];
+        CACHE_J = new short[16][16][16];
         for (int x = 0; x < 16; x++) {
             for (int z = 0; z < 16; z++) {
-                for (int y = 0; y < 256; y++) {
+                for (int y = 0; y < 16; y++) {
                     short j = (short) ((y & 0xF) << 8 | z << 4 | x);
                     CACHE_J[y][x][z] = j;
                 }
@@ -83,7 +80,7 @@ public class ChunkUtil {
      * @return J value for xyz position in Array[4096].
      */
     public static int getJ(int x, int y, int z) {
-        return CACHE_J[y][x][z];
+        return CACHE_J[y & 15][x & 15][z & 15];
     }
 
     /**
@@ -97,14 +94,14 @@ public class ChunkUtil {
     }
 
     /**
-     * Gets the y coordinate for specific I and J values for a Chunk 16x16x16x16 layerxyz Array[16][4096].
+     * Gets the y coordinate for specific I and J values for a Chunk Nx16x16x16 layerxyz Array[N][4096].
      *
-     * @param i Relative layer of the position in the layerxyz Array[16][4096].
+     * @param i Relative layer of the position in the layerxyz Array[16][4096]. May be negative.
      * @param j Position in the xyz Array[4096].
      * @return x coordinate within the chunk
      */
     public static int getY(int i, int j) {
-        return y_loc[i][j];
+        return (i << 4) + y_loc[j];
     }
 
     /**

Core/src/main/java/com/plotsquared/core/util/InventoryUtil.java

@@ -38,11 +38,33 @@ public abstract class InventoryUtil {
 
     public abstract void close(final PlotInventory inv);
 
-    public abstract void setItem(
+    /**
+     * Attempts to set an item into a {@link PlotInventory} while also checking the existence of the material
+     *
+     * @param plotInventory The inventory where the item should be placed
+     * @param index The index where to place the item
+     * @param item The item to place into the inventory
+     * @return {@code true} if the item could be placed, {@code false} otherwise (e.g. item not available in current version)
+     * @since 6.5.0
+     */
+    public abstract boolean setItemChecked(
             final PlotInventory plotInventory, final int index,
             final PlotItemStack item
     );
 
+    /**
+     * Attempts to set an item into a {@link PlotInventory}
+     *
+     * @param plotInventory The inventory where the item should be placed
+     * @param index The index where to place the item
+     * @param item The item to place into the inventory
+     * @see #setItemChecked(PlotInventory, int, PlotItemStack)
+     */
+    public void setItem(final PlotInventory plotInventory, final int index,
+                        final PlotItemStack item) {
+        setItemChecked(plotInventory, index, item);
+    }
+
     public abstract PlotItemStack[] getItems(final PlotPlayer<?> player);
 
     public abstract boolean isOpen(final PlotInventory plotInventory);

Core/src/main/java/com/plotsquared/core/util/MainUtil.java

@@ -37,15 +37,21 @@ public class MainUtil {
      * Cache of mapping x,y,z coordinates to the chunk array<br>
      * - Used for efficient world generation<br>
      */
+    @Deprecated(forRemoval = true, since = "6.0.0")
     public static short[][] x_loc;
+    @Deprecated(forRemoval = true, since = "6.0.0")
     public static short[][] y_loc;
+    @Deprecated(forRemoval = true, since = "6.0.0")
     public static short[][] z_loc;
+    @Deprecated(forRemoval = true, since = "6.0.0")
     public static short[][][] CACHE_I = null;
+    @Deprecated(forRemoval = true, since = "6.0.0")
     public static short[][][] CACHE_J = null;
 
     /**
      * This cache is used for world generation and just saves a bit of calculation time when checking if something is in the plot area.
      */
+    @Deprecated(forRemoval = true, since = "6.0.0")
     public static void initCache() {
         if (x_loc == null) {
             x_loc = new short[16][4096];

Core/src/main/java/com/plotsquared/core/util/RegExUtil.java

@@ -29,6 +29,7 @@ import java.util.HashMap;
 import java.util.Map;
 import java.util.regex.Pattern;
 
+@Deprecated(since = "6.6.2", forRemoval = true)
 public class RegExUtil {
 
     public static Map<String, Pattern> compiledPatterns;

Core/src/main/java/com/plotsquared/core/util/RegionManager.java

@@ -279,7 +279,10 @@ public abstract class RegionManager {
         fromQueue1.addReadChunks(new CuboidRegion(pos1.getBlockVector3(), pos2.getBlockVector3()).getChunks());
         fromQueue2.addReadChunks(new CuboidRegion(
                 swapPos.getBlockVector3(),
-                BlockVector3.at(swapPos.getX() + pos2.getX() - pos1.getX(), 0, swapPos.getZ() + pos2.getZ() - pos1.getZ())
+                BlockVector3.at(swapPos.getX() + pos2.getX() - pos1.getX(),
+                        pos1.getY(),
+                        swapPos.getZ() + pos2.getZ() - pos1.getZ()
+                )
         ).getChunks());
         QueueCoordinator toQueue1 = blockQueue.getNewQueue(world1);
         QueueCoordinator toQueue2 = blockQueue.getNewQueue(world2);
@@ -352,7 +355,7 @@ public abstract class RegionManager {
             int bz = Math.max(pos1.getZ(), cbz) & 15;
             int tx = Math.min(pos2.getX(), cbx + 15) & 15;
             int tz = Math.min(pos2.getZ(), cbz + 15) & 15;
-            for (int y = 0; y < 256; y++) {
+            for (int y = world1.getMinY(); y <= world1.getMaxY(); y++) {
                 for (int x = bx; x <= tx; x++) {
                     for (int z = bz; z <= tz; z++) {
                         int rx = cbx + x;
@@ -363,7 +366,10 @@ public abstract class RegionManager {
                     }
                 }
             }
-            Region region = new CuboidRegion(BlockVector3.at(cbx + bx, 0, cbz + bz), BlockVector3.at(cbx + tx, 255, cbz + tz));
+            Region region = new CuboidRegion(
+                    BlockVector3.at(cbx + bx, world1.getMinY(), cbz + bz),
+                    BlockVector3.at(cbx + tx, world1.getMaxY(), cbz + tz)
+            );
             toQueue.addEntities(world1.getEntities(region));
             if (removeEntities) {
                 for (Entity entity : world1.getEntities(region)) {
@@ -373,6 +379,7 @@ public abstract class RegionManager {
         });
     }
 
+    @Deprecated(forRemoval = true, since = "6.6.0")
     public void setBiome(
             final CuboidRegion region,
             final int extendBiome,
@@ -380,39 +387,48 @@ public abstract class RegionManager {
             final String world,
             final Runnable whenDone
     ) {
-        Location pos1 = Location
-                .at(
-                        world,
-                        region.getMinimumPoint().getX() - extendBiome,
-                        region.getMinimumPoint().getY(),
-                        region.getMinimumPoint().getZ() - extendBiome
-                );
-        Location pos2 = Location
-                .at(
-                        world,
-                        region.getMaximumPoint().getX() + extendBiome,
-                        region.getMaximumPoint().getY(),
-                        region.getMaximumPoint().getZ() + extendBiome
-                );
-        final QueueCoordinator queue = blockQueue.getNewQueue(worldUtil.getWeWorld(world));
+        setBiome(region, extendBiome, biome, PlotSquared.get().getPlotAreaManager().getPlotAreas(world, region)[0], whenDone);
+    }
 
-        final int minX = pos1.getX();
-        final int minZ = pos1.getZ();
-        final int maxX = pos2.getX();
-        final int maxZ = pos2.getZ();
+    /**
+     * Set a region to a biome type.
+     *
+     * @param region      region to set
+     * @param extendBiome how far outside the region to extent setting the biome too account for 3D biomes being 4x4
+     * @param biome       biome to set
+     * @param area        {@link PlotArea} in which the biome is being set
+     * @param whenDone    task to run when complete
+     * @since 6.6.0
+     */
+    public void setBiome(
+            final CuboidRegion region,
+            final int extendBiome,
+            final BiomeType biome,
+            final PlotArea area,
+            final Runnable whenDone
+    ) {
+        final QueueCoordinator queue = blockQueue.getNewQueue(worldUtil.getWeWorld(area.getWorldName()));
         queue.addReadChunks(region.getChunks());
-        queue.setChunkConsumer(blockVector2 -> {
-            final int cx = blockVector2.getX() << 4;
-            final int cz = blockVector2.getZ() << 4;
+        final BlockVector3 regionMin = region.getMinimumPoint();
+        final BlockVector3 regionMax = region.getMaximumPoint();
+        queue.setChunkConsumer(chunkPos -> {
+            BlockVector3 chunkMin = BlockVector3.at(
+                    Math.max(chunkPos.getX() << 4, regionMin.getBlockX()),
+                    regionMin.getBlockY(),
+                    Math.max(chunkPos.getZ() << 4, regionMin.getBlockZ())
+            );
+            BlockVector3 chunkMax = BlockVector3.at(
+                    Math.min((chunkPos.getX() << 4) + 15, regionMax.getBlockX()),
+                    regionMax.getBlockY(),
+                    Math.min((chunkPos.getZ() << 4) + 15, regionMax.getBlockZ())
+            );
+            CuboidRegion chunkRegion = new CuboidRegion(region.getWorld(), chunkMin, chunkMax);
             WorldUtil.setBiome(
-                    world,
-                    Math.max(minX, cx),
-                    Math.max(minZ, cz),
-                    Math.min(maxX, cx + 15),
-                    Math.min(maxZ, cz + 15),
+                    area.getWorldName(),
+                    chunkRegion,
                     biome
             );
-            worldUtil.refreshChunk(blockVector2.getBlockX(), blockVector2.getBlockZ(), world);
+            worldUtil.refreshChunk(chunkPos.getBlockX(), chunkPos.getBlockZ(), area.getWorldName());
         });
         queue.setCompleteTask(whenDone);
         queue.enqueue();

Core/src/main/java/com/plotsquared/core/util/RegionUtil.java

@@ -76,8 +76,9 @@ public class RegionUtil {
         return new CuboidRegion(min, max);
     }
 
+    @Deprecated(forRemoval = true, since = "6.6.0")
     public static CuboidRegion createRegion(int pos1x, int pos2x, int pos1z, int pos2z) {
-        return createRegion(pos1x, pos2x, 0, Plot.MAX_HEIGHT - 1, pos1z, pos2z);
+        return createRegion(pos1x, pos2x, 0, 255, pos1z, pos2z);
     }
 
     public static CuboidRegion createRegion(

Core/src/main/java/com/plotsquared/core/util/SchematicHandler.java

@@ -305,12 +305,13 @@ public abstract class SchematicHandler {
             final int WIDTH = dimension.getX();
             final int LENGTH = dimension.getZ();
             final int HEIGHT = dimension.getY();
+            final int worldHeight = plot.getArea().getMaxGenHeight() - plot.getArea().getMinGenHeight() + 1;
             // Validate dimensions
             CuboidRegion region = plot.getLargestRegion();
             boolean sizeMismatch =
                     ((region.getMaximumPoint().getX() - region.getMinimumPoint().getX() + xOffset + 1) < WIDTH) || (
                             (region.getMaximumPoint().getZ() - region.getMinimumPoint().getZ() + zOffset + 1) < LENGTH) || (HEIGHT
-                            > 256);
+                            > worldHeight);
             if (!Settings.Schematics.PASTE_MISMATCHES && sizeMismatch) {
                 actor.sendMessage(TranslatableCaption.of("schematics.schematic_size_mismatch"));
                 TaskManager.runTask(whenDone);
@@ -321,14 +322,14 @@ public abstract class SchematicHandler {
             // Calculate the optimal height to paste the schematic at
             final int y_offset_actual;
             if (autoHeight) {
-                if (HEIGHT >= 256) {
+                if (HEIGHT >= worldHeight) {
                     y_offset_actual = yOffset;
                 } else {
                     PlotArea pw = plot.getArea();
                     if (pw instanceof ClassicPlotWorld) {
                         y_offset_actual = yOffset + pw.getMinBuildHeight() + ((ClassicPlotWorld) pw).PLOT_HEIGHT;
                     } else {
-                        y_offset_actual = yOffset + 1 + this.worldUtil
+                        y_offset_actual = yOffset + pw.getMinBuildHeight() + this.worldUtil
                                 .getHighestBlockSynchronous(plot.getWorldName(), region.getMinimumPoint().getX() + 1,
                                         region.getMinimumPoint().getZ() + 1
                                 );
@@ -360,9 +361,9 @@ public abstract class SchematicHandler {
             // Paste schematic here
             final QueueCoordinator queue = plot.getArea().getQueue();
 
-            for (int ry = 0; ry < Math.min(256, HEIGHT); ry++) {
+            for (int ry = 0; ry < Math.min(worldHeight, HEIGHT); ry++) {
                 int yy = y_offset_actual + ry;
-                if (yy > 255 || yy < 0) {
+                if (yy > plot.getArea().getMaxGenHeight() || yy < plot.getArea().getMinGenHeight()) {
                     continue;
                 }
                 for (int rz = 0; rz < blockArrayClipboard.getDimensions().getZ(); rz++) {
@@ -379,18 +380,18 @@ public abstract class SchematicHandler {
                         BlockVector3 loc = BlockVector3.at(rx, ry, rz);
                         BaseBlock id = blockArrayClipboard.getFullBlock(loc);
                         queue.setBlock(xx, yy, zz, id);
-                        if (ry == 0) {
-                            BiomeType biome = blockArrayClipboard.getBiome(loc);
-                            queue.setBiome(xx, yy, zz, biome);
-                        }
+                        BiomeType biome = blockArrayClipboard.getBiome(loc);
+                        queue.setBiome(xx, yy, zz, biome);
                     }
                 }
             }
             if (actor != null && Settings.QUEUE.NOTIFY_PROGRESS) {
                 queue.addProgressSubscriber(subscriberFactory.createWithActor(actor));
             }
-            whenDone.value = true;
-            queue.setCompleteTask(whenDone);
+            if (whenDone != null) {
+                whenDone.value = true;
+                queue.setCompleteTask(whenDone);
+            }
             queue.enqueue();
         } catch (Exception e) {
             e.printStackTrace();

Core/src/main/java/com/plotsquared/core/util/TimeUtil.java

@@ -44,27 +44,27 @@ public final class TimeUtil {
         StringBuilder toReturn = new StringBuilder();
         if (time >= 33868800) {
             int years = (int) (time / 33868800);
-            time -= years * 33868800;
+            time -= years * 33868800L;
             toReturn.append(years).append("y ");
         }
         if (time >= 604800) {
             int weeks = (int) (time / 604800);
-            time -= weeks * 604800;
+            time -= weeks * 604800L;
             toReturn.append(weeks).append("w ");
         }
         if (time >= 86400) {
             int days = (int) (time / 86400);
-            time -= days * 86400;
+            time -= days * 86400L;
             toReturn.append(days).append("d ");
         }
         if (time >= 3600) {
             int hours = (int) (time / 3600);
-            time -= hours * 3600;
+            time -= hours * 3600L;
             toReturn.append(hours).append("h ");
         }
         if (time >= 60) {
             int minutes = (int) (time / 60);
-            time -= minutes * 60;
+            time -= minutes * 60L;
             toReturn.append(minutes).append("m ");
         }
         if (toReturn.length() == 0 || time > 0) {

Core/src/main/java/com/plotsquared/core/util/WEManager.java

@@ -44,6 +44,9 @@ import java.util.UUID;
 
 public class WEManager {
 
+    private static final BlockVector3 MIN = BlockVector3.at(Integer.MIN_VALUE, Integer.MIN_VALUE, Integer.MIN_VALUE);
+    private static final BlockVector3 MAX = BlockVector3.at(Integer.MAX_VALUE, Integer.MAX_VALUE, Integer.MAX_VALUE);
+
     public static boolean maskContains(Set<CuboidRegion> mask, int x, int y, int z) {
         for (CuboidRegion region : mask) {
             if (RegionUtil.contains(region, x, y, z)) {
@@ -91,10 +94,7 @@ public class WEManager {
         Location location = player.getLocation();
         String world = location.getWorldName();
         if (!PlotSquared.get().getPlotAreaManager().hasPlotArea(world)) {
-            regions.add(RegionUtil
-                    .createRegion(Integer.MIN_VALUE, Integer.MAX_VALUE, Integer.MIN_VALUE,
-                            Integer.MAX_VALUE
-                    ));
+            regions.add(new CuboidRegion(MIN, MAX));
             return regions;
         }
         PlotArea area = player.getApplicablePlotArea();

Core/src/main/java/com/plotsquared/core/util/WorldUtil.java

@@ -39,6 +39,7 @@ import com.sk89q.jnbt.Tag;
 import com.sk89q.worldedit.math.BlockVector2;
 import com.sk89q.worldedit.math.BlockVector3;
 import com.sk89q.worldedit.regions.CuboidRegion;
+import com.sk89q.worldedit.world.World;
 import com.sk89q.worldedit.world.biome.BiomeType;
 import com.sk89q.worldedit.world.block.BlockState;
 import com.sk89q.worldedit.world.block.BlockType;
@@ -78,14 +79,29 @@ public abstract class WorldUtil {
      * @param p2x   Max X
      * @param p2z   Max Z
      * @param biome Biome
+     * @deprecated use {@link WorldUtil#setBiome(String, CuboidRegion, BiomeType)}
      */
+    @Deprecated(forRemoval = true)
     public static void setBiome(String world, int p1x, int p1z, int p2x, int p2z, BiomeType biome) {
-        BlockVector3 pos1 = BlockVector2.at(p1x, p1z).toBlockVector3();
-        BlockVector3 pos2 = BlockVector2.at(p2x, p2z).toBlockVector3(Plot.MAX_HEIGHT - 1);
+        World weWorld = PlotSquared.platform().worldUtil().getWeWorld(world);
+        BlockVector3 pos1 = BlockVector2.at(p1x, p1z).toBlockVector3(weWorld.getMinY());
+        BlockVector3 pos2 = BlockVector2.at(p2x, p2z).toBlockVector3(weWorld.getMaxY());
         CuboidRegion region = new CuboidRegion(pos1, pos2);
         PlotSquared.platform().worldUtil().setBiomes(world, region, biome);
     }
 
+    /**
+     * Set the biome in a region
+     *
+     * @param world  World name
+     * @param region Region
+     * @param biome  Biome
+     * @since 6.6.0
+     */
+    public static void setBiome(String world, final CuboidRegion region, BiomeType biome) {
+        PlotSquared.platform().worldUtil().setBiomes(world, region, biome);
+    }
+
     /**
      * Check if a given world name corresponds to a real world
      *
@@ -217,11 +233,14 @@ public abstract class WorldUtil {
     /**
      * Set the biome in a region
      *
-     * @param world  World name
-     * @param region Region
-     * @param biome  New biome
+     * @param worldName World name
+     * @param region    Region
+     * @param biome     New biome
      */
-    public abstract void setBiomes(@NonNull String world, @NonNull CuboidRegion region, @NonNull BiomeType biome);
+    public void setBiomes(@NonNull String worldName, @NonNull CuboidRegion region, @NonNull BiomeType biome) {
+        final World world = getWeWorld(worldName);
+        region.forEach(bv -> world.setBiome(bv, biome));
+    }
 
     /**
      * Get the WorldEdit {@link com.sk89q.worldedit.world.World} corresponding to a world name

Core/src/main/java/com/plotsquared/core/util/helpmenu/HelpMenu.java

@@ -52,8 +52,7 @@ public class HelpMenu {
     }
 
     public HelpMenu getCommands() {
-        this.commands =
-                MainCommand.getInstance().getCommands(this.commandCategory, this.commandCaller);
+        this.commands = MainCommand.getInstance().getCommands(this.commandCategory, this.commandCaller);
         return this;
     }
 

Core/src/main/java/com/plotsquared/core/uuid/UUIDMapping.java

@@ -51,38 +51,29 @@ public class UUIDMapping {
         return this.uuid;
     }
 
+    @Override
     public boolean equals(final Object o) {
-        if (o == this) {
+        if (this == o) {
             return true;
         }
-        if (!(o instanceof final UUIDMapping other)) {
+        if (o == null || getClass() != o.getClass()) {
             return false;
         }
-        if (!other.canEqual(this)) {
-            return false;
-        }
-        final Object this$uuid = this.getUuid();
-        final Object other$uuid = other.getUuid();
-        if (!Objects.equals(this$uuid, other$uuid)) {
-            return false;
-        }
-        final Object this$username = this.getUsername();
-        final Object other$username = other.getUsername();
-        return Objects.equals(this$username, other$username);
+        final UUIDMapping that = (UUIDMapping) o;
+        return uuid.equals(that.uuid) && username.equals(that.username);
     }
 
+    @Override
+    public int hashCode() {
+        return Objects.hash(uuid, username);
+    }
+
+    /**
+     * @deprecated This method is not meant to be invoked or overridden, with no replacement.
+     */
+    @Deprecated(forRemoval = true, since = "6.6.0")
     protected boolean canEqual(final Object other) {
         return other instanceof UUIDMapping;
     }
 
-    public int hashCode() {
-        final int PRIME = 59;
-        int result = 1;
-        final Object $uuid = this.getUuid();
-        result = result * PRIME + $uuid.hashCode();
-        final Object $username = this.getUsername();
-        result = result * PRIME + $username.hashCode();
-        return result;
-    }
-
 }

Core/src/main/resources/lang/messages_en.json

@@ -161,8 +161,9 @@
   "setup.road_width": "<gold>Road width</gold>",
   "setup.road_height": "<gold>Road height</gold>",
   "setup.road_block": "<gold>Road block</gold>",
-  "setup.wall_filling_block": "<gold>Wall filling block</gold><gray> (Block(s) been put under the plot border down to Y1)</gray>",
+  "setup.wall_filling_block": "<gold>Wall filling block</gold><gray> (Block(s) been put under the plot border down to min gen height + 1)</gray>",
   "setup.wall_height": "<gold>Wall height</gold>",
+  "setup.min_gen_height": "<gold>Minimum height from which to generate (for 1.18+ can be negative).</gold>",
   "setup.bedrock_boolean": "<gold>Whether a bedrock layer under the plot should be generated or not</gold>",
   "setup.singleplotarea_void_world": "<gold>Void world</gold>",
   "plotareatype.plot_area_type_normal": "<gray>Standard plot generation</gray>",
@@ -460,9 +461,12 @@
   "backups.backup_automatic_failure": "<prefix><red>The automatic backup process failed. Your pending action has been canceled. Reason: </red><gray><reason></gray>",
   "preset.preset_cannot_afford": "<prefix><red>You cannot afford that preset.</red>",
   "preset.preset_invalid": "<prefix><red>Could not generate a pattern from that preset.</red>",
-  "preset.preset_lore_cost": "<prefix><gray>Cost: </gray><gold><cost></gold>",
+  "preset.preset_lore_cost": "<gray>Cost: </gray><gold><cost></gold>",
+  "preset.preset_lore_economy_disabled": "<gray>Cost: </gray><red>Economy is disabled</red>",
   "preset.preset_lore_component": "<gray>Component: </gray><gold><component></gold>",
   "preset.title": "Plot Components",
+  "preset.empty": "<prefix><red>No plot component presets available.</red>",
+  "preset.economy_disabled": "<prefix><red>The component preset '<preset>' has a price set but economy is disabled.</red>",
   "generic.generic_other": "<gray>other</gray>",
   "generic.generic_merged": "<gray>merged</gray>",
   "generic.generic_unowned": "<gray>unowned</gray>",
@@ -526,15 +530,15 @@
   "flags.flag_category_mixed": "<gray>Mixed Value Flags</gray>",
   "flags.flag_description_entity_cap": "<gray>Set to an integer value to limit the amount of entities on the plot.</gray>",
   "flags.flag_description_explosion": "<gray>Set to `true` to enable explosions in the plot, and `false` to disable them.</gray>",
-  "flags.flag_description_music": "<gray>Set to a music disk ID (item name) to play the music disc inside of the plot.</gray>",
+  "flags.flag_description_music": "<gray>Set to a music disk ID (item name) to play the music disc inside the plot.</gray>",
   "flags.flag_description_flight": "<gray>Set to `true` to enable flight within the plot when in survival or adventure mode</gray>\n<gray>set to `default` to use the gamemode default, and `false` to disable flight entirely.</gray>",
   "flags.flag_description_untrusted": "<gray>Set to `false` to disallow untrusted players from visiting the plot.</gray>",
   "flags.flag_description_deny_exit": "<gray>Set to `true` to disallow players from exiting the plot.</gray>",
   "flags.flag_description_chat": "<gray>Set to `false` to prevent plot chat on the plot.</gray>",
   "flags.flag_description_description": "<gray>Plot description. Supports MiniMessage/Adventure.</gray>",
-  "flags.flag_description_greeting": "<gray>Message sent to players on plot entry. Supports '&' color codes.</gray>",
-  "flags.flag_description_farewell": "<gray>Message sent to players when leaving the plot. Supports '&' color codes.</gray>",
-  "flags.flag_description_weather": "<gray>Specifies the weather conditions inside of the plot.</gray>",
+  "flags.flag_description_greeting": "<gray>Message sent to players on plot entry.</gray>",
+  "flags.flag_description_farewell": "<gray>Message sent to players when leaving the plot.</gray>",
+  "flags.flag_description_weather": "<gray>Specifies the weather conditions inside the plot.</gray>",
   "flags.flag_description_animal_attack": "<gray>Set to `true` to allow animals to be attacked in the plot.</gray>",
   "flags.flag_description_animal_cap": "<gray>Set to an integer value to limit the amount of animals on the plot.</gray>",
   "flags.flag_description_animal_interact": "<gray>Set to `true` to allow animals to be interacted with in the plot.</gray>",
@@ -557,8 +561,8 @@
   "flags.flag_description_ice_form": "<gray>Set to `true` to allow ice to form in the plot.</gray>",
   "flags.flag_description_ice_melt": "<gray>Set to `false` to disable ice melting in the plot.</gray>",
   "flags.flag_description_instabreak": "<gray>Set to `true` to allow blocks to be instantaneously broken in survival mode.</gray>",
-  "flags.flag_description_invincible": "<gray>Set to `true` to prevent players from taking damage inside of the plot.</gray>",
-  "flags.flag_description_item_drop": "<gray>Set to `false` to prevent items from being dropped inside of the plot.</gray>",
+  "flags.flag_description_invincible": "<gray>Set to `true` to prevent players from taking damage inside the plot.</gray>",
+  "flags.flag_description_item_drop": "<gray>Set to `false` to prevent items from being dropped inside the plot.</gray>",
   "flags.flag_description_kelp_grow": "<gray>Set to `false` to prevent kelp from growing in the plot.</gray>",
   "flags.flag_description_liquid_flow": "<gray>Set to `false` to disable liquids from flowing within the plot.</gray>",
   "flags.flag_description_misc_break": "<gray>Set to `true` to allow guests to break miscellaneous items.</gray>",
@@ -603,10 +607,10 @@
   "flags.flag_description_guest_gamemode": "<gray>Determines the guest gamemode in the plot.</gray>",
   "flags.flag_description_blocked_cmds": "<gray>A list of commands that are blocked in the plot.</gray>",
   "flags.flag_description_keep": "<gray>Prevents the plot from expiring. Can be set to: true, false, the number of milliseconds to keep the plot for or a timestamp (3w 2d 5h).</gray>",
-  "flags.flag_description_keep_inventory": "<gray>Prevents players from dropping their items when they die inside of the plot.</gray>",
+  "flags.flag_description_keep_inventory": "<gray>Prevents players from dropping their items when they die inside the plot.</gray>",
   "flags.flag_description_deny_portal_travel": "<gray>Prevents players from travelling across dimensions by using portals.</gray>",
   "flags.flag_description_deny_portals": "<gray>Prevents players from creating portals of any kind.</gray>",
-  "flags.flag_description_lectern_read_book": "<gray>Prevents players taking books from lecterns.</gray>",
+  "flags.flag_description_lectern_read_book": "<gray>Prevent players taking books from lecterns.</gray>",
   "flags.flag_description_prevent_creative_copy": "<gray>Prevents people from copying item NBT data in the plot unless they're added as members.</gray>",
   "flags.flag_description_leaf_decay": "<gray>Set to `false` to prevent leaves from decaying.",
   "flags.flag_error_boolean": "Flag value must be a boolean (true | false).",
@@ -620,8 +624,6 @@
   "flags.flag_error_title": "Flag value must be in the format </red><grey>\"A title\" \"The subtitle\"</grey><red>.",
   "flags.area_flags": "<prefix><gray>Area flags: </gray><dark_aqua><flags></dark_aqua>",
   "flags.road_flags": "<prefix><gray>Road flags: </gray><dark_aqua><flags></dark_aqua>",
-  "flags.greeting_flag_format": "<prefix><gold>[<world>;<plot_id>]:</gold> <greeting>",
-  "flags.farewell_flag_format": "<prefix><gold>[<world>;<plot_id>]:</gold> <farewell>",
   "commands.description.add": "<gray>Allow a user to build in a plot while the plot owner is online.</gray>",
   "commands.description.alias": "<gray>Set the plot alias.</gray>",
   "commands.description.area": "<gray>Create a new plot area.</gray>",

README.md

@@ -27,15 +27,15 @@ is to provide a lag-free and smooth experience.
 
 * [Download](https://www.spigotmc.org/resources/77506/)
 * [Discord](https://discord.gg/intellectualsites)
-* [Wiki](https://github.com/IntellectualSites/PlotSquared-Documentation/wiki)
+* [Wiki](https://intellectualsites.github.io/plotsquared-documentation/)
 * [Issues](https://github.com/IntellectualSites/PlotSquared/issues)
 * [Translations](https://intellectualsites.crowdin.com/plotsquared/)
 * [Contributing](https://github.com/IntellectualSites/.github/blob/main/CONTRIBUTING.md)
 
 ### Developer Resources
-* [API Documentation](https://github.com/IntellectualSites/PlotSquared-Documentation/wiki/API-Documentation)
-* [Event API](https://github.com/IntellectualSites/PlotSquared-Documentation/wiki/Events)
-* [Flag API](https://github.com/IntellectualSites/PlotSquared-Documentation/wiki/API-Flag)
+* [API Documentation](https://intellectualsites.github.io/plotsquared-documentation/api/api-documentation)
+* [Event API](https://intellectualsites.github.io/plotsquared-documentation/api/event-api)
+* [Flag API](https://intellectualsites.github.io/plotsquared-documentation/api/flag-api)
 
 # Official Addons
 * [Plot2Dynmap](http://www.spigotmc.org/resources/plot2dynmap.1292/)

build.gradle.kts

@@ -18,7 +18,7 @@ plugins {
     idea
 }
 
-version = "6.4.1-SNAPSHOT"
+version = "6.6.4-SNAPSHOT"
 
 allprojects {
     group = "com.plotsquared"
@@ -40,6 +40,9 @@ allprojects {
         maven {
             name = "Jitpack"
             url = uri("https://jitpack.io")
+            content {
+                includeModule("com.github.MilkBowl", "VaultAPI")
+            }
         }
 
         maven {

gradle/libs.versions.toml

@@ -1,14 +1,14 @@
 [versions]
 # Minecraft expectations
-gson = "2.8.9" # Version set by Minecraft
+gson = "2.8.8" # Version set by Minecraft
 log4j-api = "2.17.1" # Version set by Minecraft
 guava = "31.0.1-jre" # Version set by Minecraft
 
 # Platform expectations
 paper = "1.18.1-R0.1-SNAPSHOT"
-checker-qual = "3.21.1"
+checker-qual = "3.22.0"
 guice = "5.1.0"
-findbugs = "3.0.1"
+spotbugs = "4.6.0"
 snakeyaml = "1.30" # Version set by Bukkit
 
 # Adventure & MiniMessage
@@ -17,23 +17,23 @@ adventure-text-minimessage = "4.1.0-SNAPSHOT"
 adventure-platform-bukkit = "4.0.1"
 
 # Plugins
-worldedit = "7.2.8"
-fawe = "2.0.0"
+worldedit = "7.2.10"
+fawe = "2.1.2"
 vault = "1.7.1"
 placeholderapi = "2.11.1"
-luckperms = "5.3"
-essentialsx = "2.19.2"
+luckperms = "5.4"
+essentialsx = "2.19.4"
 mvdwapi = "3.1.1"
 
 # Third party
 prtree = "2.0.0"
 aopalliance = "1.0"
-cloud-services = "1.6.1"
+cloud-services = "1.6.2"
 arkitektonika = "2.1.1"
-paster = "1.1.3"
-bstats = "2.2.1"
+paster = "1.1.4"
+bstats = "3.0.0"
 paperlib = "1.0.7"
-squirrelid = "0.3.0"
+squirrelid = "0.3.1"
 serverlib = "2.3.1"
 http4j = "1.3"
 
@@ -56,7 +56,7 @@ log4j = { group = "org.apache.logging.log4j", name = "log4j-api", version.ref =
 snakeyaml = { group = "org.yaml", name = "snakeyaml", version.ref = "snakeyaml" }
 guice = { group = "com.google.inject", name = "guice", version.ref = "guice" }
 guiceassistedinject = { group = "com.google.inject.extensions", name = "guice-assistedinject", version.ref = "guice" }
-findbugs = { group = "com.google.code.findbugs", name = "annotations", version.ref = "findbugs" }
+spotbugs = { group = "com.github.spotbugs", name = "spotbugs-annotations", version.ref = "spotbugs" }
 
 # Adventure & MiniMessage
 adventure = { group = "net.kyori", name = "adventure-api", version.ref = "adventure-api" }
@@ -78,7 +78,7 @@ prtree = { group = "com.intellectualsites.prtree", name = "PRTree", version.ref
 aopalliance = { group = "aopalliance", name = "aopalliance", version.ref = "aopalliance" }
 cloudServices = { group = "cloud.commandframework", name = "cloud-services", version.ref = "cloud-services" }
 mvdwapi = { group = "com.intellectualsites.mvdwplaceholderapi", name = "MVdWPlaceholderAPI", version.ref = "mvdwapi" }
-squirrelid = { group = "com.github.EngineHub", name = "SquirrelID", version.ref = "squirrelid" }
+squirrelid = { group = "org.enginehub", name = "squirrelid", version.ref = "squirrelid" }
 serverlib = { group = "dev.notmyfault.serverlib", name = "ServerLib", version.ref = "serverlib" }
 bstats = { group = "org.bstats", name = "bstats-bukkit", version.ref = "bstats" }
 paperlib = { group = "io.papermc", name = "paperlib", version.ref = "paperlib" }

gradle/wrapper/gradle-wrapper.properties

@@ -1,5 +1,5 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-7.3.3-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-7.4.2-bin.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists

renovate.json

@@ -8,7 +8,8 @@
     "com.google.guava:guava",
     "com.google.code.gson:gson",
     "gson",
-    "snakeyaml"
+    "snakeyaml",
+    "net.kyori"
   ],
   "timezone": "Europe/Berlin",
   "schedule": [

settings.gradle.kts

@@ -5,5 +5,4 @@ include("Core", "Bukkit")
 project(":Core").name = "PlotSquared-Core"
 project(":Bukkit").name = "PlotSquared-Bukkit"
 
-enableFeaturePreview("VERSION_CATALOGS")
 enableFeaturePreview("TYPESAFE_PROJECT_ACCESSORS")