anchor.diff:     * [Touch] object
      */
     Touch touch;
  -  
  +
   //=============================================================================
   
     static const int DEFAULT_WIDTH = 800;
  
positive.code:     stage.focus = world;
  
    }
    
  //=============================================================================
  
    bool get autoHiDpi => StageXL.Stage.autoHiDpi;
    
    /**
     * Is the device a mobile?
     */
    bool get isMobile => StageXL.Stage.isMobile;
    
    /**
     * Give back the pixel ratio.
     */
  
negative.code: 
  /**
   * Game class is the main entry point of the game framework.
   *
   * Game has built in members that helps you acces different classes through
   * your own Game object.
   *
   * The Game is based on the stateManager,which helps you break up your game into
   * states, so you wont have one big pile of code.
   *
   * In your game's main Dart file you only have to deal with managing the states.
   *
   * Your main file should look something like this:
   *     void main(){
   *       Game game = new Game();
   *
   *       //Add states to the stateManager
   *       game.stateManager.addStateMap({
   *         "first": new First("second"),
   *         "second": new Second("third"),
   *         "third": new Third()
   *       });
   *
   *       //Start the first state
   *       game.stateManager.initState("first");
   *     }
   *
   * */
  
  class Game {
  