android 游戏 实战 打飞机 实现主角以及主角相关元素(3)

先看效果图

新建player 类

public class Player {    private int playerHp = 3;    private Bitmap bmpPlayerHP;    // 主角坐标以及位图    private int x, y;    private Bitmap bmpPlayer;    // 主角移动速度    private int speed = 5;    // 主角移动标识    private boolean isUp, isDown, isLeft, isRight;    // 主角的构造函数    public Player(Bitmap bmpPlayer, Bitmap bmpPlayerHp) {        this.bmpPlayer = bmpPlayer;        this.bmpPlayerHP = bmpPlayerHp;        // 飞机初始位置        x = MySurfaceView.screenW / 2 - bmpPlayer.getWidth() / 2;        y = MySurfaceView.screenH - bmpPlayer.getHeight();    }    // 主角游戏绘制方法    public void draw(Canvas canvas, Paint paint) {        // 绘制主角        canvas.drawBitmap(bmpPlayer, x, y, paint);        // 绘制血量        for (int i = 0; i < playerHp; i++) {            canvas.drawBitmap(bmpPlayerHP, i * bmpPlayerHP.getWidth(),                    MySurfaceView.screenH - bmpPlayerHP.getHeight(), paint);        }    }    /**     * 按键事件监听     */    public void onKeyDown(int keyCode, KeyEvent event) {        if (keyCode == KeyEvent.KEYCODE_DPAD_UP) {            isUp = true;        }        if (keyCode == KeyEvent.KEYCODE_DPAD_DOWN) {            isDown = true;        }        if (keyCode == KeyEvent.KEYCODE_DPAD_LEFT) {            isLeft = true;        }        if (keyCode == KeyEvent.KEYCODE_DPAD_RIGHT) {            isRight = true;        }    }    public void onKeyUp(int keyCode, KeyEvent event) {        if (keyCode == KeyEvent.KEYCODE_DPAD_UP) {            isUp = false;        }        if (keyCode == KeyEvent.KEYCODE_DPAD_DOWN) {            isDown = false;        }        if (keyCode == KeyEvent.KEYCODE_DPAD_LEFT) {            isLeft = false;        }        if (keyCode == KeyEvent.KEYCODE_DPAD_RIGHT) {            isRight = false;        }    }    /**     * 游戏逻辑     */    public void logic() {        if (isUp) {            y -= speed;        }        if (isDown) {            y += speed;        }        if (isLeft) {            x -= speed;        }        if (isRight) {            x += speed;        }        // 判断屏幕X边界        if (x + bmpPlayer.getWidth() >= MySurfaceView.screenW) {            x = MySurfaceView.screenW - bmpPlayer.getWidth();        } else if (x <= 0) {            x = 0;        }        // 判断屏幕Y边界        if (y + bmpPlayer.getHeight() >= MySurfaceView.screenH) {            y = MySurfaceView.screenH - bmpPlayer.getHeight();        } else if (y <= 0) {            y = 0;        }    }    //设置主角血量    public void setPlayerHp(int hp) {        this.playerHp = hp;    }    //获取主角血量    public int getPlayerHp() {        return playerHp;    }}

=========再在MySurfaceView中调用===

public class MySurfaceView extends SurfaceView implements Callback, Runnable {    private SurfaceHolder sfh;    private Paint paint;    private Thread th;    private boolean flag;    private Canvas canvas;    // 1 定义游戏状态常量    public static final int GAME_MENU = 0;// 游戏菜单    public static final int GAMEING = 1;// 游戏中    public static final int GAME_WIN = 2;// 游戏胜利    public static final int GAME_LOST = 3;// 游戏失败    public static final int GAME_PAUSE = -1;// 游戏菜单    // 当前游戏状态(默认初始在游戏菜单界面)    public static int gameState = GAME_MENU;    // 声明一个Resources实例便于加载图片    private Resources res = this.getResources();    // 声明游戏需要用到的图片资源(图片声明)    private Bitmap bmpBackGround;// 游戏背景    private Bitmap bmpBoom;// 爆炸效果    private Bitmap bmpBoosBoom;// Boos爆炸效果    private Bitmap bmpButton;// 游戏开始按钮    private Bitmap bmpButtonPress;// 游戏开始按钮被点击    private Bitmap bmpEnemyDuck;// 怪物鸭子    private Bitmap bmpEnemyFly;// 怪物苍蝇    private Bitmap bmpEnemyBoos;// 怪物猪头Boos    private Bitmap bmpGameWin;// 游戏胜利背景    private Bitmap bmpGameLost;// 游戏失败背景    private Bitmap bmpPlayer;// 游戏主角飞机    private Bitmap bmpPlayerHp;// 主角飞机血量    private Bitmap bmpMenu;// 菜单背景    public static Bitmap bmpBullet;// 子弹    public static Bitmap bmpEnemyBullet;// 敌机子弹    public static Bitmap bmpBossBullet;// Boss子弹    public static int screenW;    public static int screenH;    //    private GameMenu gameMenu;    private GameBg gameBg;    private Player player;    /**     * SurfaceView初始化函数     */    public MySurfaceView(Context context) {        super(context);        sfh = this.getHolder();        sfh.addCallback(this);        paint = new Paint();        paint.setColor(Color.WHITE);        paint.setAntiAlias(true);        setFocusable(true);    }    /**     * SurfaceView视图创建，响应此函数     */    @Override    public void surfaceCreated(SurfaceHolder holder) {        screenW = this.getWidth();        screenH = this.getHeight();        initGame();        flag = true;        // 实例线程        th = new Thread(this);        // 启动线程        th.start();    }    /**     * 加载游戏资源     */    private void initGame() {        // 加载游戏资源        bmpBackGround = BitmapFactory                .decodeResource(res, R.drawable.background);        bmpBoom = BitmapFactory.decodeResource(res, R.drawable.boom);        bmpBoosBoom = BitmapFactory.decodeResource(res, R.drawable.boos_boom);        bmpButton = BitmapFactory.decodeResource(res, R.drawable.button);        bmpButtonPress = BitmapFactory.decodeResource(res,                R.drawable.button_press);        bmpEnemyDuck = BitmapFactory.decodeResource(res, R.drawable.enemy_duck);        bmpEnemyFly = BitmapFactory.decodeResource(res, R.drawable.enemy_fly);        bmpEnemyBoos = BitmapFactory.decodeResource(res, R.drawable.enemy_pig);        bmpGameWin = BitmapFactory.decodeResource(res, R.drawable.gamewin);        bmpGameLost = BitmapFactory.decodeResource(res, R.drawable.gamelost);        bmpPlayer = BitmapFactory.decodeResource(res, R.drawable.player);        bmpPlayerHp = BitmapFactory.decodeResource(res, R.drawable.hp);        bmpMenu = BitmapFactory.decodeResource(res, R.drawable.menu);        bmpBullet = BitmapFactory.decodeResource(res, R.drawable.bullet);        bmpEnemyBullet = BitmapFactory.decodeResource(res,                R.drawable.bullet_enemy);        bmpBossBullet = BitmapFactory                .decodeResource(res, R.drawable.boosbullet);        //菜单类实例化        gameMenu = new GameMenu(bmpMenu, bmpButton, bmpButtonPress);        gameBg = new GameBg(bmpBackGround);        player = new Player(bmpPlayer,bmpPlayerHp);    }    /**     * 游戏绘图     */    public void myDraw() {        try {            canvas = sfh.lockCanvas();            if (canvas != null) {                canvas.drawColor(Color.WHITE);                // 绘图函数根据游戏状态不同进行不同绘制                switch (gameState) {                case GAME_MENU:                    gameMenu.draw(canvas, paint);                    break;                case GAMEING:                    gameBg.draw(canvas, paint);                    player.draw(canvas, paint);                    break;                case GAME_WIN:                    break;                case GAME_LOST:                    break;                case GAME_PAUSE:                    break;                default:                    break;                }            }        } catch (Exception e) {            // TODO: handle exception        } finally {            if (canvas != null)                sfh.unlockCanvasAndPost(canvas);        }    }    /**     * 触屏事件监听     */    @Override    public boolean onTouchEvent(MotionEvent event) {        switch (gameState) {        case GAME_MENU:            gameMenu.onTouchEvent(event);            break;        case GAMEING:            break;        case GAME_WIN:            break;        case GAME_LOST:            break;        case GAME_PAUSE:            break;        }        return true;    }    /**     * 按键事件监听     */    @Override    public boolean onKeyDown(int keyCode, KeyEvent event) {        switch (gameState) {        case GAME_MENU:            break;        case GAMEING:            player.onKeyDown(keyCode, event);            break;        case GAME_WIN:            break;        case GAME_LOST:            break;        case GAME_PAUSE:            break;        }        return super.onKeyDown(keyCode, event);    }    @Override    public boolean onKeyUp(int keyCode, KeyEvent event) {        switch (gameState) {        case GAME_MENU:            break;        case GAMEING:            player.onKeyUp(keyCode, event);            break;        case GAME_WIN:            break;        case GAME_LOST:            break;        case GAME_PAUSE:            break;        }        return super.onKeyUp(keyCode, event);    }    /**     * 游戏逻辑     */    private void logic() {        switch (gameState) {        case GAME_MENU:            break;        case GAMEING:            gameBg.logic();            player.logic();            break;        case GAME_WIN:            break;        case GAME_LOST:            break;        case GAME_PAUSE:            break;        }    }    @Override    public void run() {        while (flag) {            long start = System.currentTimeMillis();            myDraw();            logic();            long end = System.currentTimeMillis();            try {                if (end - start < 50) {                    Thread.sleep(50 - (end - start));                }            } catch (InterruptedException e) {                e.printStackTrace();            }        }    }    /**     * SurfaceView视图状态发生改变，响应此函数     */    @Override    public void surfaceChanged(SurfaceHolder holder, int format, int width,            int height) {    }    /**     * SurfaceView视图消亡时，响应此函数     */    @Override    public void surfaceDestroyed(SurfaceHolder holder) {        flag = false;    }}