android游戏编程之从零开始飞机游戏触摸移动

package com.pg; import java.util.Random; import java.util.Vector; import android.content.Context; import android.content.res.Resources; import android.graphics.Bitmap; import android.graphics.BitmapFactory; import android.graphics.Canvas; import android.graphics.Color; import android.graphics.Paint; import android.view.KeyEvent; import android.view.MotionEvent; import android.view.SurfaceHolder; import android.view.SurfaceView; import android.view.SurfaceHolder.Callback; /** * * @author Himi * */ public class MySurfaceView extends SurfaceView implements Callback, Runnable { private SurfaceHolder sfh; private Paint paint; private Thread th; private boolean flag; private Canvas canvas; public static int screenW, screenH; //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 //声明一个菜单对象 private GameMenu gameMenu; //声明一个滚动游戏背景对象 private GameBg backGround; //声明主角对象 private Player player; //声明一个敌机容器 private Vector<Enemy> vcEnemy; //每次生成敌机的时间(毫秒) private int createEnemyTime = 50; private int count;//计数器 //敌人数组：1和2表示敌机的种类，-1表示Boss //二维数组的每一维都是一组怪物 private int enemyArray[][] = { { 1, 2 }, { 1, 1 }, { 1, 3, 1, 2 }, { 1, 2 }, { 2, 3 }, { 3, 1, 3 }, { 2, 2 }, { 1, 2 }, { 2, 2 }, { 1, 3, 1, 1 }, { 2, 1 }, { 1, 3 }, { 2, 1 }, { -1 } }; //当前取出一维数组的下标 private int enemyArrayIndex; //是否出现Boss标识位 private boolean isBoss; //随机库，为创建的敌机赋予随即坐标 private Random random; //敌机子弹容器 private Vector<Bullet> vcBullet; //添加子弹的计数器 private int countEnemyBullet; //主角子弹容器 private Vector<Bullet> vcBulletPlayer; //添加子弹的计数器 private int countPlayerBullet; //爆炸效果容器 private Vector<Boom> vcBoom; //声明Boss private Boss boss; //Boss的子弹容器 public static Vector<Bullet> vcBulletBoss; /** * 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); setFocusableInTouchMode(true); //设置背景常亮 this.setKeepScreenOn(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(); } /* * 自定义的游戏初始化函数 */ private void initGame() { //放置游戏切入后台重新进入游戏时，游戏被重置! //当游戏状态处于菜单时，才会重置游戏 if (gameState == GAME_MENU) { //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); //爆炸效果容器实例 vcBoom = new Vector<Boom>(); //敌机子弹容器实例 vcBullet = new Vector<Bullet>(); //主角子弹容器实例 vcBulletPlayer = new Vector<Bullet>(); //菜单类实例 gameMenu = new GameMenu(bmpMenu, bmpButton, bmpButtonPress); //实例游戏背景 backGround = new GameBg(bmpBackGround); //实例主角 player = new Player(bmpPlayer, bmpPlayerHp); //实例敌机容器 vcEnemy = new Vector<Enemy>(); //实例随机库 random = new Random(); //---Boss相关 //实例boss对象 boss = new Boss(bmpEnemyBoos); //实例Boss子弹容器 vcBulletBoss = new Vector<Bullet>(); } } /** * 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: //菜单的绘图函数 gameMenu.draw(canvas, paint); break; case GAMEING: //游戏背景 backGround.draw(canvas, paint); //主角绘图函数 player.draw(canvas, paint); if (isBoss == false) { //敌机绘制 for (int i = 0; i < vcEnemy.size(); i++) { vcEnemy.elementAt(i).draw(canvas, paint); } //敌机子弹绘制 for (int i = 0; i < vcBullet.size(); i++) { vcBullet.elementAt(i).draw(canvas, paint); } } else { //Boos的绘制 boss.draw(canvas, paint); //Boss子弹逻辑 for (int i = 0; i < vcBulletBoss.size(); i++) { vcBulletBoss.elementAt(i).draw(canvas, paint); } } //处理主角子弹绘制 for (int i = 0; i < vcBulletPlayer.size(); i++) { vcBulletPlayer.elementAt(i).draw(canvas, paint); } //爆炸效果绘制 for (int i = 0; i < vcBoom.size(); i++) { vcBoom.elementAt(i).draw(canvas, paint); } break; case GAME_PAUSE: break; case GAME_WIN: canvas.drawBitmap(bmpGameWin, 0, 0, paint); break; case GAME_LOST: canvas.drawBitmap(bmpGameLost, 0, 0, paint); 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) { //触屏监听事件函数根据游戏状态不同进行不同监听 switch (gameState) { case GAME_MENU: //菜单的触屏事件处理 gameMenu.onTouchEvent(event); break; case GAMEING: player.onTouchEvent(event); break; case GAME_PAUSE: break; case GAME_WIN: break; case GAME_LOST: break; } return true; } /** * 按键按下事件监听 */ public boolean onKeyDown(int keyCode, KeyEvent event) { //处理back返回按键 if (keyCode == KeyEvent.KEYCODE_BACK) { //游戏胜利、失败、进行时都默认返回菜单 if (gameState == GAMEING || gameState == GAME_WIN || gameState == GAM