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);
}
}
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;
}
}
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;
public MySurfaceView(Context context) {
super(context);
sfh = this.getHolder();
sfh.addCallback(this);
paint = new Paint();
paint.setColor(Color.WHITE);
paint.setAntiAlias(true);
setFocusable(true);
}
@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();
}
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);
}
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);
}
}
@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;
}
@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);
}
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();
}
}
}
@Override
public void surfaceChanged(SurfaceHolder holder, int format, int width,
int height) {
}
@Override
public void surfaceDestroyed(SurfaceHolder holder) {
flag = false;
}
}
