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; } }

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