Added setCollisionMap method.

Author: photonstorm

v3/src/physics/impact/World.js

@@ -5,7 +5,6 @@ var Class = require('../../utils/Class');
 var COLLIDES = require('./COLLIDES');
 var CollisionMap = require('./CollisionMap');
 var GetFastValue = require('../../utils/object/GetFastValue');
-var GetValue = require('../../utils/object/GetValue');
 var Set = require('../../structs/Set');
 var Solver = require('./Solver');
 var TYPE = require('./TYPE');
@@ -93,6 +92,13 @@ var World = new Class({
         }
     },
 
+    setCollisionMap: function (tilesize, data)
+    {
+        this.collisionMap = new CollisionMap(tilesize, data);
+
+        return this;
+    },
+
     /**
     * Sets the bounds of the Physics world to match the given world pixel dimensions.
     * You can optionally set which 'walls' to create: left, right, top or bottom.