Added the tree generator for CraftBukkit. Build process is now a bit difficult.

src/com/sk89q/worldedit/bukkit/BukkitWorld.java

@@ -19,6 +19,10 @@
 
 package com.sk89q.worldedit.bukkit;
 
+import java.util.logging.Level;
+import java.util.logging.Logger;
+import org.bukkit.ItemStack;
+import org.bukkit.Location;
 import org.bukkit.World;
 import com.sk89q.worldedit.EditSession;
 import com.sk89q.worldedit.LocalWorld;
@@ -26,6 +30,11 @@ import com.sk89q.worldedit.Vector;
 import com.sk89q.worldedit.blocks.BaseItemStack;
 
 public class BukkitWorld extends LocalWorld {
+    /**
+     * Logger.
+     */
+    private final Logger logger = Logger.getLogger("Minecraft.WorldEdit");
+    
     private World world;
     
     public BukkitWorld(World world) {
@@ -100,37 +109,39 @@ public class BukkitWorld extends LocalWorld {
 
     @Override
     public boolean generateTree(EditSession editSession, Vector pt) {
-        // TODO Auto-generated method stub
-        return false;
+        try {
+            return CraftBukkitInterface.generateTree(editSession, pt);
+        } catch (Throwable t) {
+            logger.log(Level.SEVERE, 
+                    "Failed to create tree (do you need to update WorldEdit " +
+                    "due to a Minecraft update?)", t);
+            return false;
+        }
     }
 
     @Override
     public boolean generateBigTree(EditSession editSession, Vector pt) {
-        // TODO Auto-generated method stub
-        return false;
-    }
-
-    @Override
-    public void dropItem(Vector pt, int type, int count, int times) {
-        // TODO Auto-generated method stub
-        
+        try {
+            return CraftBukkitInterface.generateBigTree(editSession, pt);
+        } catch (Throwable t) {
+            logger.log(Level.SEVERE, 
+                    "Failed to create tree (do you need to update WorldEdit " +
+                    "due to a Minecraft update?)", t);
+            return false;
+        }
     }
 
     @Override
     public void dropItem(Vector pt, int type, int count) {
-        // TODO Auto-generated method stub
+        ItemStack item = new ItemStack(type, count);
+        world.dropItemNaturally(toLocation(pt), item);
         
     }
 
     @Override
     public void dropItem(Vector pt, int type) {
-        // TODO Auto-generated method stub
-        
-    }
-
-    @Override
-    public void simulateBlockMine(Vector pt) {
-        // TODO Auto-generated method stub
+        ItemStack item = new ItemStack(type, 1);
+        world.dropItemNaturally(toLocation(pt), item);
         
     }
 
@@ -139,6 +150,10 @@ public class BukkitWorld extends LocalWorld {
         // TODO Auto-generated method stub
         return 0;
     }
+    
+    private Location toLocation(Vector pt) {
+        return new Location(world, pt.getX(), pt.getY(), pt.getZ());
+    }
 
     @Override
     public boolean equals(Object other) {

src/com/sk89q/worldedit/bukkit/CraftBukkitInterface.java

@@ -0,0 +1,115 @@
+// $Id$
+/*
+ * WorldEdit
+ * Copyright (C) 2010 sk89q <http://www.sk89q.com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+package com.sk89q.worldedit.bukkit;
+
+import java.util.logging.Logger;
+import java.util.logging.Level;
+import java.util.Random;
+import java.lang.reflect.*;
+import net.minecraft.server.WorldGenBigTree;
+import net.minecraft.server.WorldGenTrees;
+import net.minecraft.server.WorldGenerator;
+import sun.reflect.ReflectionFactory;
+import com.sk89q.worldedit.*;
+
+/**
+ *
+ * @author sk89q
+ */
+public class CraftBukkitInterface {
+    /**
+     * Logger.
+     */
+    private static final Logger logger = Logger.getLogger("Minecraft.WorldEdit");
+    /**
+     * Random generator.
+     */
+    private static Random random = new Random();
+    /**
+     * Proxy for the tree generator.
+     */
+    private static WorldSetBlockProxy proxy;
+
+    /**
+     * Perform world generation at a location.
+     *
+     * @param pt
+     * @return
+     */
+    private static boolean performWorldGen(EditSession editSession, Vector pt,
+            WorldGenerator worldGen) {
+        if (proxy == null) {
+            try {
+                proxy = createNoConstructor(WorldSetBlockProxy.class);
+            } catch (Throwable t) {
+                logger.log(Level.WARNING, "setBlock() proxy class failed to construct",
+                        t);
+                return false;
+            }
+        }
+        proxy.setEditSession(editSession);
+
+        WorldGenerator gen = worldGen;
+        return gen.a(proxy, random,
+                pt.getBlockX(), pt.getBlockY() + 1, pt.getBlockZ());
+    }
+
+    /**
+     * Generate a tree at a location.
+     *
+     * @param pt
+     * @return
+     */
+    public static boolean generateTree(EditSession editSession, Vector pt) {
+        return performWorldGen(editSession, pt, new WorldGenTrees());
+    }
+
+    /**
+     * Generate a big tree at a location.
+     *
+     * @param pt
+     * @return
+     */
+    public static boolean generateBigTree(EditSession editSession, Vector pt) {
+        return performWorldGen(editSession, pt, new WorldGenBigTree());
+    }
+
+    /**
+     * Instantiate a class without calling its constructor.
+     *
+     * @param <T>
+     * @param clazz
+     * @return
+     * @throws Throwable
+     */
+    @SuppressWarnings("rawtypes")
+    private static <T> T createNoConstructor(Class<T> clazz) throws Throwable {
+        try {
+            ReflectionFactory factory = ReflectionFactory.getReflectionFactory();
+            Constructor objectConstructor = Object.class.getDeclaredConstructor();
+            Constructor c = factory.newConstructorForSerialization(
+                clazz, objectConstructor
+            );
+            return clazz.cast(c.newInstance());
+        } catch (Throwable e) {
+            throw e;
+        }
+    }
+}

src/com/sk89q/worldedit/bukkit/WorldSetBlockProxy.java

@@ -0,0 +1,92 @@
+package com.sk89q.worldedit.bukkit;
+// $Id$
+/*
+ * WorldEdit
+ * Copyright (C) 2010 sk89q <http://www.sk89q.com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+import net.minecraft.server.World;
+import com.sk89q.worldedit.EditSession;
+import com.sk89q.worldedit.Vector;
+import com.sk89q.worldedit.MaxChangedBlocksException;
+import com.sk89q.worldedit.blocks.BaseBlock;
+
+/**
+ * Proxy class to catch calls to set blocks.
+ *
+ * @author sk89q
+ */
+public class WorldSetBlockProxy extends World {
+    /**
+     * Edit session.
+     */
+    private EditSession editSession;
+
+    /**
+     * Constructor that should NOT be called.
+     * 
+     * @param editSession
+     */
+    public WorldSetBlockProxy(EditSession editSession) {
+        super(null, "", (long)0, null);
+        throw new IllegalStateException("MinecraftSetBlockProxy constructor called (BAD)");
+    }
+
+    /**
+     * Called to set a block.
+     * 
+     * @param x
+     * @param y
+     * @param z
+     * @param blockType
+     * @return
+     */
+    @Override
+    public boolean a(int x, int y, int z, int blockType) {
+        try {
+            return editSession.setBlock(new Vector(x, y, z), new BaseBlock(blockType));
+        } catch (MaxChangedBlocksException ex) {
+            return false;
+        }
+    }
+
+    /**
+     * Called to get a block.
+     * 
+     * @param x
+     * @param y
+     * @param z
+     * @return
+     */
+    @Override
+    public int a(int x, int y, int z) {
+        return editSession.getBlock(new Vector(x, y, z)).getID();
+    }
+
+    /**
+     * @return
+     */
+    public EditSession getEditSession() {
+        return editSession;
+    }
+
+    /**
+     * @param editSession
+     */
+    public void setEditSession(EditSession editSession) {
+        this.editSession = editSession;
+    }
+}