Added /editdrain, added BlockPoint that compares using ints.

src/EditSession.java

@@ -621,4 +621,77 @@ public class EditSession {
 
         return affected;
     }
+
+    /**
+     * Drain nearby pools of water or lava.
+     * 
+     * @param pos
+     * @param radius
+     * @return number of blocks affected
+     * @throws MaxChangedBlocksException
+     */
+    public int drainArea(Point pos, int radius) throws MaxChangedBlocksException {
+        int affected = 0;
+
+        HashSet<BlockPoint> visited = new HashSet<BlockPoint>();
+
+        for (int x = pos.getBlockX() - 1; x <= pos.getBlockX() + 1; x++) {
+            for (int z = pos.getBlockZ() - 1; z <= pos.getBlockZ() + 1; z++) {
+                for (int y = pos.getBlockY() - 1; y <= pos.getBlockY() + 1; y++) {
+                    affected += drainPool(new Point(x, y, z), pos, radius, visited);
+                }
+            }
+        }
+
+        return affected;
+    }
+
+    /**
+     * Drains a water or lava block and any lava/water blocks next to it.
+     * 
+     * @param pos
+     * @param origin
+     * @param radius
+     * @param visited
+     * @return number of blocks affected
+     * @throws MaxChangedBlocksException
+     */
+    private int drainPool(Point pos, Point origin, int radius, HashSet<BlockPoint> visited)
+            throws MaxChangedBlocksException {
+        int type = getBlock(pos);
+        int affected = 0;
+        
+        if (type != 8 && type != 9 && type != 10 && type != 11) {
+            return 0;
+        }
+
+        BlockPoint blockPos = new BlockPoint(pos);
+
+        if (visited.contains(blockPos)) {
+            return 0;
+        }
+        visited.add(blockPos);
+
+        if (pos.distance(origin) > radius) {
+            return 0;
+        }
+
+        for (int x = pos.getBlockX() - 1; x <= pos.getBlockX() + 1; x++) {
+            for (int z = pos.getBlockZ() - 1; z <= pos.getBlockZ() + 1; z++) {
+                for (int y = pos.getBlockY() - 1; y <= pos.getBlockY() + 1; y++) {
+                    Point newPos = new Point(x, y, z);
+                    
+                    if (!pos.equals(newPos)) {
+                        affected += drainPool(newPos, origin, radius, visited);
+                    }
+                }
+            }
+        }
+
+        if (setBlock(pos, 0)) {
+            affected++;
+        }
+
+        return affected;
+    }
 }

src/WorldEdit.java

@@ -73,6 +73,7 @@ public class WorldEdit extends Plugin {
         commands.put("/editload", "[Filename] - Load .schematic into clipboard");
         commands.put("/editsave", "[Filename] - Save clipboard to .schematic");
         commands.put("/editfill", "[ID] [Radius] <Depth> - Fill a hole");
+        commands.put("/editdrain", "[Radius] - Drain nearby water/lava pools");
         commands.put("/editscript", "[Filename] <Args...> - Run a WorldEdit script");
         commands.put("/editlimit", "[Num] - See documentation");
         commands.put("/unstuck", "Go up to the first free spot");
@@ -573,6 +574,15 @@ public class WorldEdit extends Plugin {
 
             return true;
 
+        // Drain pools
+        } else if(split[0].equalsIgnoreCase("/editdrain")) {
+            checkArgs(split, 1, 1, split[0]);
+            int radius = Math.max(0, Integer.parseInt(split[1]));
+            int affected = editSession.drainArea(player.getBlockIn(), radius);
+            player.print(affected + " block(s) have been changed.");
+
+            return true;
+
         // Replace all blocks in the region
         } else if(split[0].equalsIgnoreCase("/editreplace")) {
             checkArgs(split, 1, 2, split[0]);

src/com/sk89q/worldedit/BlockPoint.java

@@ -0,0 +1,65 @@
+// $Id$
+/*
+ * 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;
+
+/**
+ * Extension of Point that supports being compared as ints (for accuracy).
+ *
+ * @author sk89q
+ */
+public class BlockPoint extends Point {
+    /**
+     * Construct the Point object.
+     *
+     * @param pt
+     */
+    public BlockPoint(Point pt) {
+        super(pt);
+    }
+    
+    /**
+     * Checks if another object is equivalent.
+     *
+     * @param obj
+     * @return whether the other object is equivalent
+     */
+    @Override
+    public boolean equals(Object obj) {
+        if (!(obj instanceof Point)) {
+            return false;
+        }
+        Point other = (Point)obj;
+        return (int)other.x == (int)this.x && (int)other.y == (int)this.y
+                && (int)other.z == (int)this.z;
+
+    }
+
+    /**
+     * Gets the hash code.
+     *
+     * @return hash code
+     */
+    @Override
+    public int hashCode() {
+        return (Integer.valueOf((int)x).hashCode() >> 13) ^
+               (Integer.valueOf((int)y).hashCode() >> 7) ^
+                Integer.valueOf((int)z).hashCode();
+    }
+}

src/com/sk89q/worldedit/Point.java

@@ -23,8 +23,8 @@ package com.sk89q.worldedit;
  *
  * @author Albert
  */
-public final class Point {
+public class Point {
-    private final double x, y, z;
+    protected final double x, y, z;
 
     /**
      * Construct the Point object.
@@ -65,6 +65,17 @@ public final class Point {
         this.z = (double)z;
     }
 
+    /**
+     * Construct the Point object.
+     *
+     * @param pt
+     */
+    public Point(Point pt) {
+        this.x = pt.x;
+        this.y = pt.y;
+        this.z = pt.z;
+    }
+
     /**
      * Construct the Point object.
      */
@@ -303,6 +314,18 @@ public final class Point {
         return new Point(this.x / x, this.y / y, this.z / z);
     }
 
+    /**
+     * Get the distance away from a point.
+     *
+     * @param pt
+     * @return distance
+     */
+    public double distance(Point pt) {
+        return Math.sqrt(Math.pow(pt.x - x, 2) +
+                Math.pow(pt.y - y, 2) +
+                Math.pow(pt.z - z, 2));
+    }
+
     /**
      * Get a block point from a point.
      * 
@@ -344,4 +367,14 @@ public final class Point {
                 ((new Double(y)).hashCode() >> 7) ^
                 (new Double(z)).hashCode();
     }
+
+    /**
+     * Returns string representation "(x, y, z)".
+     *
+     * @return string
+     */
+    @Override
+    public String toString() {
+        return "(" + x + ", " + y + ", " + z + ")";
+    }
 }