Added Active property and toggle method.

Author: photonstorm

v3/src/gameobjects/GameObject.js

@@ -25,6 +25,8 @@ var GameObject = new Class({
 
         this.name = '';
 
+        this.active = true;
+
         this.tabIndex = -1;
 
         this.parent;
@@ -35,6 +37,14 @@ var GameObject = new Class({
         this.renderFlags = 15;
     },
 
+    //  For GameObject Pooling and item selection
+    setActive: function (value)
+    {
+        this.active = value;
+
+        return this;
+    },
+
     //  Can be overridden by custom Game Objects, but provides default export functionality
     toJSON: function ()
     {