Added a tool that allows a player to place and remove blocks at a distance.

src/main/java/com/sk89q/worldedit/LocalPlayer.java

@@ -320,6 +320,10 @@ public abstract class LocalPlayer {
         return (useLastBlock ? tb.getAnyTargetBlock() : tb.getTargetBlock());
     }
 
+    public WorldVectorFace getBlockTraceFace(int range, boolean useLastBlock) {
+        TargetBlock tb = new TargetBlock(this, range, 0.2);
+        return (useLastBlock ? tb.getAnyTargetBlockFace() : tb.getTargetBlockFace());
+    }
     /**
      * Get the point of the block being looked at. May return null.
      *

src/main/java/com/sk89q/worldedit/VectorFace.java

@@ -0,0 +1,68 @@
+package com.sk89q.worldedit;
+
+/**
+ * Represents the adjacency of one vector to another. Works similarly to
+ * Bukkit's BlockFace class.
+ *
+ * @author wizjany
+ */
+public enum VectorFace {
+    NORTH(-1, 0, 0),
+    EAST(0, 0, -1),
+    SOUTH(1, 0, 0),
+    WEST(0, 0, 1),
+    UP(0, 1, 0),
+    DOWN(0, -1, 0),
+    NORTH_EAST(NORTH, EAST),
+    NORTH_WEST(NORTH, WEST),
+    SOUTH_EAST(SOUTH, EAST),
+    SOUTH_WEST(SOUTH, WEST),
+    ABOVE_NORTH(UP, NORTH),
+    BELOW_NORTH(DOWN, NORTH),
+    ABOVE_SOUTH(UP, SOUTH),
+    BELOW_SOUTH(DOWN, SOUTH),
+    ABOVE_WEST(UP, WEST),
+    BELOW_WEST(DOWN, WEST),
+    ABOVE_EAST(UP, EAST),
+    BELOW_EAST(DOWN, EAST),
+    SELF(0, 0, 0);
+
+    private int modX;
+    private int modY;
+    private int modZ;
+
+    private VectorFace(final int modX, final int modY, final int modZ) {
+        this.modX = modX;
+        this.modY = modY;
+        this.modZ = modZ;
+    }
+
+    private VectorFace(VectorFace face1, VectorFace face2) {
+        this.modX = face1.getModX() + face2.getModX();
+        this.modY = face1.getModY() + face2.getModY();
+        this.modZ = face1.getModZ() + face2.getModZ();
+    }
+
+    public int getModX() {
+        return modX;
+    }
+
+    public int getModZ() {
+        return modZ;
+    }
+
+    public int getModY() {
+        return modY;
+    }
+
+    public static VectorFace fromMods(int modX2, int modY2, int modZ2) {
+        for (VectorFace face : values()) {
+            if (face.getModX() == modX2
+                    && face.getModY() == modY2
+                    && face.getModZ() == modZ2) {
+                return face;
+            }
+        }
+        return VectorFace.SELF;
+    }
+}

src/main/java/com/sk89q/worldedit/WorldVectorFace.java

@@ -0,0 +1,148 @@
+// $Id$
+/*
+ * 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;
+
+/**
+ * A WorldVector that emphasizes one side of the block
+ */
+public class WorldVectorFace extends WorldVector {
+    /**
+     * Represents the side.
+     */
+    private VectorFace face;
+
+    /**
+     * Construct the Vector object.
+     *
+     * @param world
+     * @param x
+     * @param y
+     * @param z
+     * @param face
+     */
+    public WorldVectorFace(LocalWorld world, double x, double y, double z, VectorFace face) {
+        super(world, x, y, z);
+        this.face = face;
+    }
+
+    /**
+     * Construct the Vector object.
+     *
+     * @param world
+     * @param x
+     * @param y
+     * @param z
+     * @param face
+     */
+    public WorldVectorFace(LocalWorld world, int x, int y, int z, VectorFace face) {
+        super(world, x, y, z);
+        this.face = face;
+    }
+
+    /**
+     * Construct the Vector object.
+     *
+     * @param world
+     * @param x
+     * @param y
+     * @param z
+     * @param face
+     */
+    public WorldVectorFace(LocalWorld world, float x, float y, float z, VectorFace face) {
+        super(world, x, y, z);
+        this.face = face;
+    }
+
+    /**
+     * Construct the Vector object.
+     *
+     * @param world
+     * @param pt
+     * @param face
+     */
+    public WorldVectorFace(LocalWorld world, Vector pt, VectorFace face) {
+        super(world, pt);
+        this.face = face;
+    }
+
+    /**
+     * Construct the Vector object.
+     * 
+     * @param world
+     * @param face
+     */
+    public WorldVectorFace(LocalWorld world, VectorFace face) {
+        super(world);
+        this.face = face;
+    }
+
+    /**
+     * Get the face.
+     *
+     * @return
+     */
+    public VectorFace getFace() {
+        return face;
+    }
+
+    /**
+     * Get the WorldVector adjacent to this WorldVectorFace.
+     *
+     * @return
+     */
+    public WorldVector getFaceVector() {
+        return new WorldVector(getWorld(),
+                               getBlockX() - face.getModX(),
+                               getBlockY() - face.getModY(),
+                               getBlockZ() - face.getModZ());
+    }
+
+    /**
+     * Get a WorldVectorFace by comparing two vectors. Note that they need not be
+     * adjacent, as only the directions, not distance, will be taken into account.
+     *
+     * @param world the world in which the resulting vector should lie
+     * @param vector the original vector
+     * @param face the direction in which the face should lie
+     * @return
+     */
+    public static WorldVectorFace getWorldVectorFace(LocalWorld world, Vector vector, Vector face) {
+        if (vector == null || face == null) return null;
+        // check which direction the face is from the vector
+        final int x1 = vector.getBlockX();
+        final int y1 = vector.getBlockY();
+        final int z1 = vector.getBlockZ();
+        int modX = x1 - face.getBlockX();
+        int modY = y1 - face.getBlockY();
+        int modZ = z1 - face.getBlockZ();
+        if (modX > 0) modX = 1;
+        else if (modX < 0) modX = -1;
+        else modX = 0;
+        if (modY > 0) modY = 1;
+        else if (modY < 0) modY = -1;
+        else modY = 0;
+        if (modZ > 0) modZ = 1;
+        else if (modZ < 0) modZ = -1;
+        else modZ = 0;
+        // construct new vector
+        return new WorldVectorFace(world, x1, y1, z1, VectorFace.fromMods(modX, modY, modZ));
+    }
+
+}

src/main/java/com/sk89q/worldedit/commands/ToolCommands.java

@@ -192,4 +192,24 @@ public class ToolCommands {
         session.setTool(player.getItemInHand(), new DistanceWand());
         player.print("Far wand tool bound to " + ItemType.toHeldName(player.getItemInHand()) + ".");
     }
+
+    @Command(
+            aliases = {"lrbuild", "/lrbuild"},
+            usage = "<leftclick block> <rightclick block>",
+            desc = "Long-range building tool",
+            min = 2,
+            max = 2
+        )
+    @CommandPermissions({"worldedit.tool.lrbuild"})
+    public static void longrangebuildtool(CommandContext args, WorldEdit we,
+            LocalSession session, LocalPlayer player, EditSession editSession)
+            throws WorldEditException {
+
+        BaseBlock secondary = we.getBlock(player, args.getString(0));
+        BaseBlock primary = we.getBlock(player, args.getString(1));
+        session.setTool(player.getItemInHand(), new LongRangeBuildTool(primary, secondary));
+        player.print("Long-range building tool bound to " + ItemType.toHeldName(player.getItemInHand()) + ".");
+        player.print("Left-click set to " + ItemType.toName(secondary.getType()) + "; right-click set to "
+                + ItemType.toName(primary.getType()) + ".");
+    }
 }

src/main/java/com/sk89q/worldedit/tools/BrushTool.java

@@ -167,11 +167,7 @@ public class BrushTool implements TraceTool {
     public boolean actPrimary(ServerInterface server, LocalConfiguration config,
             LocalPlayer player, LocalSession session) {
         WorldVector target = null;
-        if (this.range > -1) {
         target = player.getBlockTrace(getRange(), true);
-        } else {
-            target = player.getBlockTrace(MAX_RANGE);
-        }
         
         if (target == null) {
             player.printError("No block in sight!");

src/main/java/com/sk89q/worldedit/tools/LongRangeBuildTool.java

@@ -0,0 +1,97 @@
+// $Id$
+/*
+ * 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.tools;
+
+import com.sk89q.worldedit.*;
+import com.sk89q.worldedit.blocks.BaseBlock;
+import com.sk89q.worldedit.blocks.BlockID;
+
+/**
+ * A tool that can place (or remove) blocks at a distance.
+ *
+ * @author wizjany
+ */
+public class LongRangeBuildTool extends BrushTool implements DoubleActionTraceTool {
+
+    BaseBlock primary;
+    BaseBlock secondary;
+
+    public LongRangeBuildTool(BaseBlock primary, BaseBlock secondary) {
+        super("worldedit.tool.lrbuild");
+        this.primary = primary;
+        this.secondary = secondary;
+    }
+
+    public boolean canUse(LocalPlayer player) {
+        return player.hasPermission("worldedit.tool.lrbuild");
+    }
+
+    public boolean actSecondary(ServerInterface server, LocalConfiguration config,
+            LocalPlayer player, LocalSession session) {
+
+        WorldVectorFace pos = getTargetFace(player);
+        if (pos == null) return false;
+        EditSession eS = session.createEditSession(player);
+        try {
+            if (secondary.getType() == BlockID.AIR) {
+                eS.setBlock(pos, secondary);
+            } else {
+                eS.setBlock(pos.getFaceVector(), secondary);
+            }
+            return true;
+        } catch (MaxChangedBlocksException e) {
+            // one block? eat it
+        }
+        return false;
+
+    }
+
+    @Override
+    public boolean actPrimary(ServerInterface server, LocalConfiguration config,
+            LocalPlayer player, LocalSession session) {
+
+        WorldVectorFace pos = getTargetFace(player);
+        if (pos == null) return false;
+        EditSession eS = session.createEditSession(player);
+        try {
+            if (primary.getType() == BlockID.AIR) {
+                eS.setBlock(pos, primary);
+            } else {
+                eS.setBlock(pos.getFaceVector(), primary);
+            }
+            return true;
+        } catch (MaxChangedBlocksException e) {
+            // one block? eat it
+        }
+        return false;
+    }
+
+    public WorldVectorFace getTargetFace(LocalPlayer player) {
+        WorldVectorFace target = null;
+        target = player.getBlockTraceFace(getRange(), true);
+
+        if (target == null) {
+            player.printError("No block in sight!");
+            return null;
+        }
+
+        return target;
+    }
+}

src/main/java/com/sk89q/worldedit/util/TargetBlock.java

@@ -27,6 +27,8 @@ import com.sk89q.worldedit.BlockWorldVector;
 import com.sk89q.worldedit.LocalPlayer;
 import com.sk89q.worldedit.LocalWorld;
 import com.sk89q.worldedit.Vector;
+import com.sk89q.worldedit.WorldVectorFace;
+import com.sk89q.worldedit.blocks.BlockID;
 import com.sk89q.worldedit.blocks.BlockType;
 
 /**
@@ -110,7 +112,7 @@ public class TargetBlock {
         boolean searchForLastBlock = true;
         BlockWorldVector lastBlock = null;
         while (getNextBlock() != null) {
-            if (world.getBlockType(getCurrentBlock()) == 0) {
+            if (world.getBlockType(getCurrentBlock()) == BlockID.AIR) {
                 if(searchForLastBlock) {
                     lastBlock = getCurrentBlock();
                     if (lastBlock.getBlockY() <= 0 || lastBlock.getBlockY() >= 127) {
@@ -196,4 +198,14 @@ public class TargetBlock {
     public BlockWorldVector getPreviousBlock() {
         return new BlockWorldVector(world, prevPos);
     }
+
+    public WorldVectorFace getAnyTargetBlockFace() {
+        getAnyTargetBlock();
+        return WorldVectorFace.getWorldVectorFace(world, getCurrentBlock(), getPreviousBlock());
+    }
+
+    public WorldVectorFace getTargetBlockFace() {
+        getAnyTargetBlock();
+        return WorldVectorFace.getWorldVectorFace(world, getCurrentBlock(), getPreviousBlock());
+    }
 }