Optimize vanilla world generation*

*For single plot worlds

Reuse base world data. Instead of taking several seconds, it should now take tens of milliseconds.

Bukkit/src/main/java/com/github/intellectualsites/plotsquared/bukkit/util/BukkitSetupUtils.java

@@ -123,15 +123,16 @@ public class BukkitSetupUtils extends SetupUtils {
                 break;
             }
             case 1: {
-                if (!PlotSquared.get().worlds.contains(worldPath)) {
-                    PlotSquared.get().worlds.createSection(worldPath);
-                }
-                ConfigurationSection worldSection =
-                    PlotSquared.get().worlds.getConfigurationSection(worldPath);
-                for (ConfigurationNode step : steps) {
-                    worldSection.set(step.getConstant(), step.getValue());
-                }
                 if (!object.plotManager.endsWith(":single")) {
+                    if (!PlotSquared.get().worlds.contains(worldPath)) {
+                        PlotSquared.get().worlds.createSection(worldPath);
+                    }
+                    if (steps.length != 0) {
+                        ConfigurationSection worldSection = PlotSquared.get().worlds.getConfigurationSection(worldPath);
+                        for (ConfigurationNode step : steps) {
+                            worldSection.set(step.getConstant(), step.getValue());
+                        }
+                    }
                     PlotSquared.get().worlds.set("worlds." + world + ".generator.type", object.type);
                     PlotSquared.get().worlds.set("worlds." + world + ".generator.terrain", object.terrain);
                     PlotSquared.get().worlds.set("worlds." + world + ".generator.plugin", object.plotManager);

Core/src/main/java/com/github/intellectualsites/plotsquared/plot/object/worlds/SinglePlotArea.java

@@ -1,16 +1,26 @@
 package com.github.intellectualsites.plotsquared.plot.object.worlds;
 
 import com.github.intellectualsites.plotsquared.configuration.ConfigurationSection;
+import com.github.intellectualsites.plotsquared.plot.PlotSquared;
 import com.github.intellectualsites.plotsquared.plot.config.Configuration;
 import com.github.intellectualsites.plotsquared.plot.config.ConfigurationNode;
 import com.github.intellectualsites.plotsquared.plot.generator.GridPlotWorld;
-import com.github.intellectualsites.plotsquared.plot.object.*;
+import com.github.intellectualsites.plotsquared.plot.object.Location;
+import com.github.intellectualsites.plotsquared.plot.object.Plot;
+import com.github.intellectualsites.plotsquared.plot.object.PlotId;
+import com.github.intellectualsites.plotsquared.plot.object.PlotLoc;
+import com.github.intellectualsites.plotsquared.plot.object.PlotSettings;
+import com.github.intellectualsites.plotsquared.plot.object.RunnableVal;
+import com.github.intellectualsites.plotsquared.plot.object.SetupObject;
 import com.github.intellectualsites.plotsquared.plot.util.SetupUtils;
 import com.github.intellectualsites.plotsquared.plot.util.TaskManager;
 import com.github.intellectualsites.plotsquared.plot.util.WorldUtil;
 
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
+import java.io.File;
+import java.io.IOException;
+import java.nio.file.Files;
 
 public class SinglePlotArea extends GridPlotWorld {
 
@@ -26,20 +36,61 @@ public class SinglePlotArea extends GridPlotWorld {
         VOID = config.getBoolean("void", false);
     }
 
+    @Override public void saveConfiguration(ConfigurationSection config) {
+        new Exception().printStackTrace();
+        super.saveConfiguration(config);
+    }
+
     public void loadWorld(final PlotId id) {
+        String worldName = id.toCommaSeparatedString();
+        if (WorldUtil.IMP.isWorld(worldName)) {
+            return;
+        }
+        SetupObject setup = new SetupObject();
+        setup.plotManager = "PlotSquared:single";
+        setup.setupGenerator = "PlotSquared:single";
+        setup.type = TYPE;
+        setup.terrain = TERRAIN;
+        setup.step = new ConfigurationNode[0];
+        setup.world = worldName;
+
+        // Duplicate 0;0
+        if (setup.type != 0) {
+            File container = PlotSquared.imp().getWorldContainer();
+            File dest = new File(container, worldName);
+            if (!dest.exists()) {
+                File src = new File(container, "0,0");
+                if (src.exists()) {
+                    if (!dest.exists()) {
+                        dest.mkdirs();
+                    }
+                    File levelDat = new File(src, "level.dat");
+                    if (levelDat.exists()) {
+                        try {
+                            Files.copy(levelDat.toPath(), new File(dest, levelDat.getName()).toPath());
+                            File data = new File(src, "data");
+                            if (data.exists()) {
+                                File dataDest = new File(dest, "data");
+                                dataDest.mkdirs();
+                                for (File file : data.listFiles()) {
+                                    Files.copy(file.toPath(), new File(dataDest, file.getName()).toPath());
+                                }
+                            }
+                        } catch (IOException ignore) {
+                            ignore.printStackTrace();
+                        }
+                    }
+                }
+            }
+        }
+
         TaskManager.IMP.sync(new RunnableVal<Object>() {
             @Override public void run(Object value) {
                 String worldName = id.toCommaSeparatedString();
                 if (WorldUtil.IMP.isWorld(worldName)) {
                     return;
                 }
-                SetupObject setup = new SetupObject();
+
-                setup.plotManager = "PlotSquared:single";
-                setup.setupGenerator = "PlotSquared:single";
-                setup.type = TYPE;
-                setup.terrain = TERRAIN;
-                setup.step = new ConfigurationNode[0];
-                setup.world = worldName;
                 SetupUtils.manager.setupWorld(setup);
             }
         });