fix: special handle thrown eggs for projectile hit checks (#4728)

Cancelling the ProjectileHitEvent will not cover for thrown eggs spawning chickens due to how Bukkit has these events structured. The provided patch calls the same code used for normal projectiles in the specialized egg event to prevent unwanted chickens from spawning on other plots.

Signed-off-by: FlorianMichael <florian.michael07@gmail.com>

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

@@ -47,6 +47,7 @@ import org.bukkit.event.entity.LingeringPotionSplashEvent;
 import org.bukkit.event.entity.PotionSplashEvent;
 import org.bukkit.event.entity.ProjectileHitEvent;
 import org.bukkit.event.entity.ProjectileLaunchEvent;
+import org.bukkit.event.player.PlayerEggThrowEvent;
 import org.bukkit.projectiles.BlockProjectileSource;
 import org.bukkit.projectiles.ProjectileSource;
 import org.checkerframework.checker.nullness.qual.NonNull;
@@ -157,14 +158,26 @@ public class ProjectileEventListener implements Listener {
 
     @EventHandler
     public void onProjectileHit(ProjectileHitEvent event) {
-        Projectile entity = event.getEntity();
+        if (cancelProjectileHit(event.getEntity())) {
+            event.setCancelled(true);
+        }
+    }
+
+    @EventHandler
+    public void onPlayerEggThrow(PlayerEggThrowEvent event) {
+        if (cancelProjectileHit(event.getEgg())) {
+            event.setHatching(false);
+        }
+    }
+
+    private boolean cancelProjectileHit(Projectile entity) {
         Location location = BukkitUtil.adapt(entity.getLocation());
         if (!this.plotAreaManager.hasPlotArea(location.getWorldName())) {
-            return;
+            return false;
         }
         PlotArea area = location.getPlotArea();
         if (area == null) {
-            return;
+            return false;
         }
         Plot plot = area.getPlot(location);
         ProjectileSource shooter = entity.getShooter();
@@ -172,15 +185,14 @@ public class ProjectileEventListener implements Listener {
             if (!((Player) shooter).isOnline()) {
                 if (plot != null) {
                     if (plot.isAdded(((Player) shooter).getUniqueId()) || plot.getFlag(ProjectilesFlag.class)) {
-                        return;
+                        return false;
                     }
                 } else if (PlotFlagUtil.isAreaRoadFlagsAndFlagEquals(area, ProjectilesFlag.class, true)) {
-                    return;
+                    return false;
                 }
 
                 entity.remove();
-                event.setCancelled(true);
+                return true;
-                return;
             }
 
             PlotPlayer<?> pp = BukkitUtil.adapt((Player) shooter);
@@ -189,38 +201,36 @@ public class ProjectileEventListener implements Listener {
                         Permission.PERMISSION_ADMIN_PROJECTILE_UNOWNED
                 )) {
                     entity.remove();
-                    event.setCancelled(true);
+                    return true;
                 }
-                return;
+                return false;
             }
             if (plot.isAdded(pp.getUUID()) || pp.hasPermission(Permission.PERMISSION_ADMIN_PROJECTILE_OTHER) || plot.getFlag(
                     ProjectilesFlag.class) || (entity instanceof FishHook && plot.getFlag(
                     FishingFlag.class))) {
-                return;
+                return false;
             }
             entity.remove();
-            event.setCancelled(true);
+            return true;
-            return;
         }
         if (!(shooter instanceof Entity) && shooter != null) {
             if (plot == null) {
                 entity.remove();
-                event.setCancelled(true);
+                return true;
-                return;
             }
             Location sLoc =
                     BukkitUtil.adapt(((BlockProjectileSource) shooter).getBlock().getLocation());
             if (!area.contains(sLoc.getX(), sLoc.getZ())) {
                 entity.remove();
-                event.setCancelled(true);
+                return true;
-                return;
             }
             Plot sPlot = area.getOwnedPlotAbs(sLoc);
             if (sPlot == null || !PlotHandler.sameOwners(plot, sPlot)) {
                 entity.remove();
-                event.setCancelled(true);
+                return true;
             }
         }
+        return false;
     }
 
 }

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

@@ -164,9 +164,6 @@ public abstract class ClassicPlotWorld extends SquarePlotWorld {
                 : getMinBuildHeight();
     }
 
-    /**
-     * Get the lowest height of plot, road, and wall. Accounts for {@link Settings.Schematics#USE_WALL_IN_ROAD_SCHEM_HEIGHT}
-     */
     int schematicStartHeight() {
         int plotRoadMin = Math.min(PLOT_HEIGHT, ROAD_HEIGHT);
         if (!Settings.Schematics.USE_WALL_IN_ROAD_SCHEM_HEIGHT) {

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

@@ -274,8 +274,7 @@ public class HybridPlotWorld extends ClassicPlotWorld {
                 SCHEM_Y = getMinGenHeight();
                 plotY = 0;
             } else if (!Settings.Schematics.PASTE_ON_TOP) {
-                // Schematics should generate/be pasted from build height
+                SCHEM_Y = getMinGenHeight();
-                SCHEM_Y = getMinBuildHeight();
                 plotY = 0;
             }
         }
@@ -292,14 +291,18 @@ public class HybridPlotWorld extends ClassicPlotWorld {
                 roadY = 0; // Road is the lowest schematic
                 if (schematic3 != null && schematic3.getClipboard().getDimensions().getY() != worldGenHeight) {
                     // Road is the lowest schematic. Normalize plotY to it.
-                    plotY = (Settings.Schematics.PASTE_ON_TOP ? PLOT_HEIGHT : getMinBuildHeight()) - SCHEM_Y;
+                    if (Settings.Schematics.PASTE_ON_TOP) {
+                        plotY = PLOT_HEIGHT - getMinGenHeight();
+                    }
                 }
             } else if (!Settings.Schematics.PASTE_ROAD_ON_TOP) {
                 roadY = 0;
                 SCHEM_Y = getMinGenHeight();
-                if (schematic3 != null && schematic3.getClipboard().getDimensions().getY() != worldGenHeight) {
+                if (schematic3 != null) {
+                    if (Settings.Schematics.PASTE_ON_TOP) {
                         // Road is the lowest schematic. Normalize plotY to it.
-                    plotY = (Settings.Schematics.PASTE_ON_TOP ? PLOT_HEIGHT : getMinBuildHeight()) - SCHEM_Y;
+                        plotY = PLOT_HEIGHT - SCHEM_Y;
+                    }
                 }
             } else {
                 roadY = minRoadWall - SCHEM_Y;

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

@@ -68,7 +68,6 @@ import java.util.HashSet;
 import java.util.Iterator;
 import java.util.LinkedHashSet;
 import java.util.List;
-import java.util.Objects;
 import java.util.Set;
 import java.util.concurrent.atomic.AtomicBoolean;
 import java.util.concurrent.atomic.AtomicInteger;
@@ -530,7 +529,7 @@ public class HybridUtils {
         final QueueCoordinator queue = blockQueue.getNewQueue(worldUtil.getWeWorld(world));
         Location bot = plot.getBottomAbs().subtract(1, 0, 1);
         Location top = plot.getTopAbs();
-        final HybridPlotWorld plotworld = Objects.requireNonNull((HybridPlotWorld) plot.getArea());
+        final HybridPlotWorld plotworld = (HybridPlotWorld) plot.getArea();
         // 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 ?