Added /up.

src/WorldEditListener.java

@@ -169,6 +169,7 @@ public class WorldEditListener extends PluginListener {
         commands.put("/jumpto", "Jump to the block that you are looking at");
         commands.put("/thru", "Go through the wall that you are looking at");
         commands.put("/ceil", "<Clearance> - Get to the ceiling");
+        commands.put("/up", "<Distance> - Go up some distance");
         commands.put("/chunkinfo", "Get the filename of the chunk that you are in");
         commands.put("/listchunks", "Print a list of used chunks");
         commands.put("/delchunks", "Generate a shell script to delete chunks");
@@ -442,6 +443,18 @@ public class WorldEditListener extends PluginListener {
             }
             return true;
 
+        // Go up
+        } else if (split[0].equalsIgnoreCase("/up")) {
+            checkArgs(split, 1, 1, split[0]);
+            int distance = Integer.parseInt(split[1]);
+
+            if (player.ascendUpwards(distance)) {
+                player.print("Whoosh!");
+            } else {
+                player.printError("You would hit something above you.");
+            }
+            return true;
+
         // Set edit position #1
         } else if (split[0].equalsIgnoreCase("//pos1")) {
             checkArgs(split, 0, 0, split[0]);

src/WorldEditPlayer.java

@@ -225,6 +225,38 @@ public class WorldEditPlayer {
         return false;
     }
 
+    /**
+     * Just go up.
+     *
+     * @param distance
+     * @return whether the player was moved
+     */
+    public boolean ascendUpwards(int distance) {
+        Vector pos = getBlockIn();
+        int x = pos.getBlockX();
+        int initialY = Math.max(0, pos.getBlockY());
+        int y = Math.max(0, pos.getBlockY() + 1);
+        int z = pos.getBlockZ();
+        int maxY = Math.min(128, initialY + distance);
+
+        while (y <= 129) {
+            if (!BlockType.canPassThrough(ServerInterface.getBlockType(new Vector(x, y, z)))) {
+                break; // Hit something
+            } else if (y > maxY + 1) {
+                break;
+            } else if (y == maxY + 1) {
+                ServerInterface.setBlockType(new Vector(x, y - 2, z),
+                        BlockType.GLASS.getID());
+                setPosition(new Vector(x + 0.5, y - 1, z + 0.5));
+                return true;
+            }
+
+            y++;
+        }
+
+        return false;
+    }
+
     /**
      * Returns true if equal.
      *

src/com/sk89q/worldedit/blocks/BlockType.java

@@ -236,4 +236,36 @@ public enum BlockType {
                 || id == 83 // Reed
                 || id == 90; // Portal
     }
+
+    /**
+     * Checks whether a block can be passed through.
+     *
+     * @param id
+     * @return
+     */
+    public static boolean canPassThrough(int id) {
+        return id == 0 // Air
+                || id == 6 // Saplings
+                || id == 37 // Yellow flower
+                || id == 38 // Red flower
+                || id == 39 // Brown mushroom
+                || id == 40 // Red mush room
+                || id == 50 // Torch
+                || id == 51 // Fire
+                || id == 55 // Redstone wire
+                || id == 59 // Crops
+                || id == 63 // Sign post
+                || id == 65 // Ladder
+                || id == 66 // Minecart tracks
+                || id == 68 // Wall sign
+                || id == 69 // Lever
+                || id == 70 // Stone pressure plate
+                || id == 72 // Wooden pressure plate
+                || id == 75 // Redstone torch (off)
+                || id == 76 // Redstone torch (on)
+                || id == 77 // Stone button
+                || id == 78 // Snow
+                || id == 83 // Reed
+                || id == 90; // Portal
+    }
 }