Added a Location class and conversion utilities.

This is required for the latest WorldGuard version

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

@@ -0,0 +1,120 @@
+// $Id$
+/*
+ * WorldEdit
+ * Copyright (C) 2010 sk89q <http://www.sk89q.com> and contributors
+ *
+ * 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;
+
+public class Location {
+    private final LocalWorld world;
+    private final Vector position;
+    private final float yaw;
+    private final float pitch;
+
+    public Location(LocalWorld world, Vector position) {
+        this(world, position, 0, 0);
+    }
+
+    public Location(LocalWorld world, Vector position, float yaw, float pitch) {
+        this.world = world;
+        this.position = position;
+        this.yaw = yaw;
+        this.pitch = pitch;
+    }
+
+    public LocalWorld getWorld() {
+        return world;
+    }
+
+    public Vector getPosition() {
+        return position;
+    }
+
+    public float getYaw() {
+        return yaw;
+    }
+
+    public float getPitch() {
+        return pitch;
+    }
+
+    public Location setAngles(float yaw, float pitch) {
+        return new Location(world, position, yaw, pitch);
+    }
+
+    public Location setPosition(Vector position) {
+        return new Location(world, position, yaw, pitch);
+    }
+
+    public Location add(Vector other) {
+        return setPosition(position.add(other));
+    }
+
+    public Location add(double x, double y, double z) {
+        return setPosition(position.add(x, y, z));
+    }
+
+    public Vector getDirection() {
+        final double yawRadians = Math.toRadians(yaw);
+        final double pitchRadians = Math.toRadians(pitch);
+        final double y = -Math.sin(pitchRadians);
+
+        final double h = Math.cos(pitchRadians);
+
+        final double x = -h * Math.sin(yawRadians);
+        final double z = h * Math.cos(yawRadians);
+
+        return new Vector(x, y, z);
+    }
+
+    @Override
+    public boolean equals(Object obj) {
+        if (!(obj instanceof Location))
+            return false;
+
+        Location location = (Location) obj;
+        if (!world.equals(location.world))
+            return false;
+
+        if (!position.equals(location.position))
+            return false;
+
+        return true;
+    }
+
+    @Override
+    public int hashCode() {
+        return position.hashCode() + 19 * world.hashCode();
+    }
+
+
+    public static Location fromLookAt(LocalWorld world, Vector start, Vector lookAt) {
+        final Vector diff = lookAt.subtract(start);
+
+        return fromEye(world, start, diff);
+    }
+
+    public static Location fromEye(LocalWorld world, Vector start, Vector eye) {
+        final double eyeX = eye.getX();
+        final double eyeZ = eye.getZ();
+        final float yaw = (float) Math.toDegrees(Math.atan2(-eyeX, eyeZ));
+        final double length = Math.sqrt(eyeX * eyeX + eyeZ * eyeZ);
+        final float pitch = (float) Math.toDegrees(Math.atan2(-eye.getY(), length));
+
+        return new Location(world, start, yaw, pitch);
+    }
+}