Amazed游戏学习一 程序框架

发现一个简单但是有意思的小游戏，玩法和HTC自带的那个滚球的游戏差不多。先看一下程序运行的效果：

整个程序结构非常简单，只有四个类，他们的关系如下所示：

整个界面都是通过View的onDraw画上去的，并没有使用布局控件，在AmazedView这个View类中基本上包含了所有的逻辑代码，能让整个游戏不断刷新，动起来的游戏引擎部分也在这里面，下面是从创建到运行的时序图：

其实整个游戏的引擎非常简单，就是onDraw——>gameTick——>(调用invalidate)——>onDraw形成一个循环

 @Override
    public void onDraw(Canvas canvas) {
        // update our canvas reference.
        mCanvas = canvas;

        // clear the screen.
        mPaint.setColor(Color.WHITE);
        mCanvas.drawRect(0, 0, mCanvasWidth, mCanvasHeight, mPaint);

        // simple state machine, draw screen depending on the current state.
        switch (mCurState) {
        case GAME_RUNNING:
            // draw our maze first since everything else appears "on top" of it.
            mMaze.draw(mCanvas, mPaint);

            // draw our marble and hud.
            mMarble.draw(mCanvas, mPaint);

            // draw hud
            drawHUD();
            break;

        case GAME_OVER:
            drawGameOver();
            break;

        case GAME_COMPLETE:
            drawGameComplete();
            break;

        case GAME_LANDSCAPE:
            drawLandscapeMode();
            break;
        }

        gameTick();
    }

/**
     * Called every cycle, used to process current game state.
     */
    public void gameTick() {
        // very basic state machine, makes a good foundation for a more complex
        // game.
        switch (mCurState) {
        case GAME_INIT:
            // prepare a new game for the user.
            initNewGame();
            switchGameState(GAME_RUNNING);

        case GAME_RUNNING:
            // update our marble.
            if (!mWarning)
                updateMarble();
            break;
        }

        // redraw the screen once our tick function is complete.
        invalidate();
    }

下面是程序的源代码下载地址：http://download.csdn.net/detail/gaomatrix/3699889