anchor.diff:  /**
   Platform game example
  - 
  +
   @author Danny Hendrix
   **/
   
  -#library('PlatformGame');
  -
  -#import ("dart:html");
  -
  -#import ("Render.dart");
  -#import ("Camera.dart");
  -#import ("MessageController.dart");
  -#import ("level/Level.dart");
  -#import ("renderobjects/gameobjects/Player.dart");
  -#import ("renderobjects/gameobjects/GameObject.dart");
  -
  -#import ("../utils/PreLoader.dart");
  -#import("../utils/JsonController.dart");
  -#import("../utils/Vector.dart");
  +library Game;
  +
  +import "dart:html";
  +import "dart:math" as Math;
  +import "Utils.dart";
  +
  +part "Game/Camera.dart";
  +part "Game/CollisionField.dart";
  +part "Game/MessageController.dart";
  +part "Game/Render.dart";
  +part "Game/Level.dart";
  +part "Game/LevelTile.dart";
  +part "Game/RenderObject.dart";
  +part "Game/RenderObject/GameObject.dart";
  +part "Game/RenderObject/Player.dart";
  +part "Game/RenderObject/Door.dart";
  +part "Game/RenderObject/Flag.dart";
  +part "Game/RenderObject/InteractiveObject.dart";
  +part "Game/RenderObject/LevelObject.dart";
  +part "Game/Sprite.dart";
  +part "Game/AnimationFrames.dart";
   
   /**
   Main Game class
  
positive.code:     goToLevel("resources/levels/level_$currentlevel.json");
    }
  
    bool loop(int looptime)
    {
      if(stop == true)
        return false;
      if(lastTime == null)
        lastTime = looptime;
  
      update(looptime);
  
      //framerate
      int now = looptime;//(new Date.now()).value;
      int delta = now-lastTime;
      lastTime = now;
      time += delta;
      frames++;
      if(time > 1000)
      {
        fps = (1000*frames/time).toInt();
        time = 0;
        frames = 0;
      }
      
      window.requestAnimationFrame(loop);
    }
    void update(int looptime)
    {
      for(int i = 0; i < gameobjects.length; i++)
        gameobjects[i].update(lastTime, looptime);
  
negative.code: 
    //framerate
    int frames = 0;
    double lastTime;
    double time = 0.0;
    int fps = 0;
    
    static final int GRAVITY = 8;
  