[绘画游戏引擎说明.docxVIP

MVC动画的原理引擎伪代码原理：一个僵尸画在屏幕上X轴50-Y轴100，宽40高60（最底层的调用）；Canvas canvas = getHolder().lockCanvas(); Bitmap src = BitmapFactory.decodeResource(context.getResources(), R.draw.zomb_0);new Drawable draw=new BitmapDrawable(src); posX=50;posy=100;width=40;height=60;draw.setBounds(posX, posY, posX + width, posY + height);draw.draw(canvas);getHolder().unlockCanvasAndPost(canvas);于是将定义角色（精灵）封装绘画作为最底层调用Public class Actor(){ Int x; Int y; Int width; Int height;Drawable currentDrawable; public void draw(Canvas canvas) { if (currentDrawable != null) {try {currentDrawable.setBounds(posX, posY, posX + width, posY+ height);currentDrawable.draw(canvas);} catch (Exception e) {// TODO Auto-generated catch blocke.printStackTrace();}} }}一片僵尸(静态的)画在屏幕上；//新建10个僵尸的X，Y轴为随机位置stage.draw()伪代码：Public class Main extends Activtity{static ListActor list = new ListActor();Canvas canvas = getHolder().lockCanvas();for(int i=0;i10;i++){ Actor actor=new ZombActor(); actor..setposX(new Random().nextInt(300)); actor..setposY(new Random().nextInt(300));actor.draw(canvas)}; list.add(actor);}getHolder().unlockCanvasAndPost(canvas);}进一步封装由stage管理Actor的list集合；Public void stage (){ ArrayList actorList=new ArrayListactor(); //将所有Actor画在某个画布上Void draw(Canvas canvas){ for(Actor actor:actorlist){ actor.draw(canvas);}}} 由view管理canvas绘画于是stage.draw()相当于遍历所有Actor集合调用所有Actor的draw()方法；view.draw();相当于将一次stage.draw()画在一次画布上；pubic class view{draw();伪代码：Canvas canvas = getHolder().lockCanvas();stage.draw(canvas)；getHolder().unlockCanvasAndPost(canvas);}}一片僵尸(动态)在屏幕上向右移动；Stage stage=new Stage();SurfaceView view=(SurfaceView)findViewByid(R.id.view);view.setStage(stage);stage.setActorlist(new ArrayListActor());//添加10个僵尸到stage的actorListfor(int i=0;i10;i++){Actor actor=new Actor();actor.currentdraw=Bitmap.uitl(”僵尸”);actor.x=new Random().nextInt(300);actor.y=new Random().nextInt(300);actor.width=40;actor.height=60;stage.getArraylist().add(new Actor)}启动一个线程来绘画new Thread(public void run(){ While(true ){ //遍历所有stage中list的Actor集