Android实战打飞机游戏子弹生成，新建子弹类
public class Bullet {
// 子弹图片资源
public Bitmap bmpBullet;
// 子弹的坐标
public int bulletX, bulletY;
// 子弹的速度
public int speed;
// 子弹的种类以及常量
public int bulletType;
// 主角的
public static final int BULLET_PLAYER = -1;
// 鸭子的
public static final int BULLET_DUCK = 1;
// 苍蝇的
public static final int BULLET_FLY = 2;
// Boss的
public static final int BULLET_BOSS = 3;
// 子弹是否超屏， 优化处理
public boolean isDead;
// Boss疯狂状态下子弹相关成员变量
private int dir;// 当前Boss子弹方向
// 8方向常量
public static final int DIR_UP = -1;
public static final int DIR_DOWN = 2;
public static final int DIR_LEFT = 3;
public static final int DIR_RIGHT = 4;
public static final int DIR_UP_LEFT = 5;
public static final int DIR_UP_RIGHT = 6;
public static final int DIR_DOWN_LEFT = 7;
public static final int DIR_DOWN_RIGHT = 8;
// 子弹当前方向
public Bullet(Bitmap bmpBullet, int bulletX, int bulletY, int bulletType) {
this.bmpBullet = bmpBullet;
this.bulletX = bulletX;
this.bulletY = bulletY;
this.bulletType = bulletType;
// 不同的子弹类型速度不一
switch (bulletType) {
case BULLET_PLAYER:
speed = 4;
break;
case BULLET_DUCK:
speed = 3;
break;
case BULLET_FLY:
speed = 4;
break;
case BULLET_BOSS:
speed = 5;
break;
}
}
public void draw(Canvas canvas, Paint paint) {
canvas.drawBitmap(bmpBullet, bulletX, bulletY, paint);
}
// 子弹的逻辑
public void logic() {
// 不同的子弹类型逻辑不一
// 主角的子弹垂直向上运动
switch (bulletType) {
case BULLET_PLAYER:
bulletY -= speed;
if (bulletY <-50) {
isDead = true;
}
break;
// 鸭子和苍蝇的子弹都是垂直下落运动
case BULLET_DUCK:
case BULLET_FLY:
bulletY += speed;
if (bulletY > MySurfaceView.screenH) {
isDead = true;
}
break;
case BULLET_BOSS:
// Boss疯狂状态下的子弹逻辑待实现
// 边界处理
if (bulletY > MySurfaceView.screenH || bulletY <= -40
|| bulletX > MySurfaceView.screenW || bulletX <= -40) {
isDead = true;
}
break;
}
}
}
在在MySurfacview里面调用 生成子弹主角的和自己的
package com.gsf;
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.SurfaceHolder.Callback;
import android.view.SurfaceView;
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;
// 声明一个敌机容器
private Vector 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;
//
private GameMenu gameMenu;
private GameBg gameBg;
private Player player;
// 敌机子弹容器
private Vector vcBullet;
// 添加子弹的计数器
private int countEnemyBullet;
// 主角子弹容器
private Vector vcBulletPlayer;
// 添加子弹的计数器
private int countPlayerBullet;
/**
* 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);
// 实例游戏背景
gameBg = new GameBg(bmpBackGround);
// 实例主角
player = new Player(bmpPlayer, bmpPlayerHp);
//敌机子弹容器实例
vcBullet = new Vector();
//主角子弹容器实例
vcBulletPlayer = new Vector();
// 实例敌机容器
vcEnemy = new Vector();
// 实例随机库
random = new Random();
}
/**
* 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);
if (isBoss == false) {
// 敌机绘制
for (int i = 0; i
现在子弹碰撞主角 并没有发生事情 需要子弹和主角的碰撞检测
//修改Player类 添加碰撞检测
// // 判断碰撞(主角与敌机子弹)
public boolean isCollsionWith(Bullet bullet) {
// 是否处于无敌时间
if (isCollision == false) {
int x2 = bullet.bulletX;
int y2 = bullet.bulletY;
int w2 = bullet.bmpBullet.getWidth();
int h2 = bullet.bmpBullet.getHeight();
if (x >= x2 && x >= x2 + w2) {
return false;
} else if (x <= x2 && x + bmpPlayer.getWidth() <= x2) {
return false;
} else if (y >= y2 && y >= y2 + h2) {
return false;
} else if (y <= y2 && y + bmpPlayer.getHeight() <= y2) {
return false;
}
// 碰撞即进入无敌状态
isCollision = true;
return true;
// 处于无敌状态，无视碰撞
} else {
return false;
}
}
在主界面 MySrufaceView 的逻辑函数中添加 主角和敌机子弹的碰撞
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