java飞机大战游戏项目难点 java飞机大战教程

1.需求分析

1 新建工程  导入图片,导入的图片在工程目录下
2 新建窗体,窗体大小400,600,新建画布,在画布类中实现三个接口
3 在画布中声明线程,以及在run方法中搭建线程样例代码
4 加载开始图片,声明Image变量,并在静态代码块中加载,在paint方法中画
5 鼠标移动到开始框中的变化
6 在点击的方法中切换背景,重画,开始线程.解决变小手问题.背景图片下滑完以后的处理
7 声明数组存放飞机,在静态代码块中加载飞机图片,在paint方法中使用三目运算切换画飞机,飞机跟随鼠标移动,飞机靠近边框问题
8 右键暂停,声明两方法,一个是控制执行wait方法的方法,一个是唤醒等待的方法的并别改suspend值.在点击的方法中获取鼠标状态来控制两个方法的执行
9 新建子弹类(int bx,by;Image bImg; int bSpeed;),在画布中新建集合存放子弹,在run方法中新建子弹对象并加到集合中,在paint方法中使用for循环从集合中取出对象并执行每一个对象的画的方法,在run方法中使用for执行移动方法
10 三个子弹,添加子弹方向,在新建子弹对象时传3个方法标识,在子弹类中添加三个子弹移动的方法,在创建子弹的时候创建三种子弹
11 创建奖励类,在画布类中创建数组存放加载进来的奖励图片,在静态代码块中加载图片,创建存放奖励的集合,在run方法中创建奖励并添加到集合中,在paint方法中画奖励,在run方法中调用奖励移动的方法.
12 画血量,在奖励的类中写碰撞,在碰时注意种类区别,各个奖励的实现.
13 敌机的出现和奖励一样
14 敌机和子弹撞击的实现
15 敌机和飞机撞击的实现

2.子弹类

public class Bullet {
	int bx,by;//坐标
	Image bImg;//图片
	int bSpeed;//速度
	int bDirection;//方向
	boolean exist=true;//是否存在
	public Bullet(int bx,int by,Image bImg,int bSpeed,int bDirection) {
		super();
		this.bx = bx;
		this.by = by;
		this.bImg = bImg;
		this.bSpeed = bSpeed;
		this.bDirection = bDirection;
	}
	//画子弹的方法
	public void drawBullet(Graphics g) {
		g.drawImage(bImg, bx, by, null);
	}
	//子弹移动的方法
	public void moveBullet0() {
		by-=bSpeed;
		if (by<0) {
			exist=false;
		}
	}
	public void moveBullet1() {
		bx-=bSpeed;
		by-=bSpeed;
		if (by<0) {
			exist=false;
		}
	}
	public void moveBullet2() {
		bx+=bSpeed;
		by-=bSpeed;
		if (by<0) {
			exist=false;
		}
	}

}

3.画布类

public class PlaneJPanel extends JPanel implements Runnable,MouseListener,MouseMotionListener{
	Thread t = null;
	static Image startImg;//游戏背景图
	int x = 0,y = 0; //背景图坐标
	// 游戏开始之前
	boolean ck = true;
	// 读取飞机图片
	static BufferedImage[] p = new BufferedImage[2];
	// 飞机坐标
	int px = 100, py = 100;
	int pc = 0;
	// 暂停开关
	boolean suspend = false;
	// 子弹存储图片对象
	static Image bImg;
	List<Bullet> bullets = new ArrayList<Bullet>();
	int count;
	// 奖励存储图片对象
	List<Award> awards = new ArrayList<Award>();
	static BufferedImage[] awa = new BufferedImage[3];
	// 飞机的血量
	int blood = 1;

	static {//使用静态代码块的作用：第一时间加载该资源
		try {
			startImg = ImageIO.read(new File("image/GameInterface/interface_1.png"));
			p[0] = ImageIO.read(new File("image/1.png"));
			p[1] = ImageIO.read(new File("image/2.png"));

			bImg = ImageIO.read(new File("image/bullet/bullet_1.png"));


			awa[0] = ImageIO.read(new File("image/award/award_1.png"));
			awa[1] = ImageIO.read(new File("image/award/award_2.png"));
			awa[2] = ImageIO.read(new File("Image/award/award_3.png"));
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}

	public PlaneJPanel() {
		t = new Thread(this);
		// 添加鼠标监听
		addMouseListener(this);
		addMouseMotionListener(this);
	}

	//绘制游戏背景
	public void paint(Graphics g) {
		//			图片	   X坐标    Y坐标      绘制指定图像中已缩放到适合指定矩形内部的图像
		g.drawImage(startImg, x, y, null);

		// 画飞机
		if (ck == false) {
			pc = pc == 0 ? 1 : 0;
			g.drawImage(p[pc], px, py, null);
		}
		for (int i = 0; i < bullets.size(); i++) {
			Bullet bullet = bullets.get(i);
			bullet.drawBullet(g);
		}
		// 画奖励
		for (int i = 0; i < awards.size(); i++) {
			Award award = awards.get(i);
			award.drawAward(g);
		}
		//画血量
		if(ck == false){
			for (int i = 0; i < blood; i++) {
				g.drawImage(awa[0], 37 * i, 10, null);
			}
		}


	}

	@Override
	public void mouseDragged(MouseEvent e) {
		// TODO Auto-generated method stub

	}
	@Override
	public void mouseMoved(MouseEvent e) {
		// TODO Auto-generated method stub
		// 鼠标移动到这个范围内改变状态
		if (ck && e.getX() >= 132 && e.getX() <= 259 && e.getY() >= 392 && e.getY() <= 432) {
			setCursor(new Cursor(Cursor.HAND_CURSOR));// 将鼠标的状态变成小手
		}else {
			setCursor(new Cursor(Cursor.DEFAULT_CURSOR));// 将鼠标状态变成箭头
		}

		px = e.getX() - p[pc].getWidth() / 2;
		py = e.getY() - p[pc].getHeight() / 2;

		if (px <= 0) {
			px = 0;
		}
		if (py <= 0) {
			py = 0;
		}
		if (px >= 400 - p[pc].getWidth()) {
			px = 400 - p[pc].getWidth();
		}
		if (py >= 600 - p[pc].getHeight()) {
			py = 600 - p[pc].getHeight();
		}

	}
	@Override
	public void mouseClicked(MouseEvent e) {
		// TODO Auto-generated method stub
		// 在开始游戏范围内点击
		if (ck && e.getX() >= 132 && e.getX() <= 259 && e.getY() >= 392 && e.getY() <= 432) {
			ck = false;
			try {
				startImg = ImageIO.read(new File("image/background/background_1.png"));
			} catch (IOException e1) {
				// TODO Auto-generated catch block
				e1.printStackTrace();
			}
			// 改变背景图片坐标
			y = -5400;
			t.start();
		}
		if (ck == false && e.getModifiers() == e.BUTTON3_MASK) {
			suspend = suspend ? resume() : suspend();
		}

	}
	@Override
	public void mousePressed(MouseEvent e) {
		// TODO Auto-generated method stub

	}
	@Override
	public void mouseReleased(MouseEvent e) {
		// TODO Auto-generated method stub

	}
	@Override
	public void mouseEntered(MouseEvent e) {
		// TODO Auto-generated method stub

	}
	@Override
	public void mouseExited(MouseEvent e) {
		// TODO Auto-generated method stub

	}
	@Override
	public void run() {
		// TODO Auto-generated method stub
		synchronized (this) {
			while (true) {
				count++;
				if (suspend) {
					try {
						wait();
					} catch (InterruptedException e) {
						// TODO Auto-generated catch block
						e.printStackTrace();
					}
				}
				y++;
				if (y >= 0) {
					y = -5400;
				}

				// 创建子弹对象
				if (count % 20 == 0) {
					Bullet bullet0 = new Bullet(px + p[pc].getWidth() / 2 - bImg.getWidth(null) / 2, py, bImg,
							3, 0);
					bullets.add(bullet0);
				}
				// 子弹移动的方法
				for (int i = 0; i < bullets.size(); i++) {
					Bullet bullet = bullets.get(i);
					if (bullet.bDirection == 0) {
						bullet.moveBullet0();
					}
					if (bullet.bDirection == 1) {
						bullet.moveBullet1();
					}
					if (bullet.bDirection == 2) {
						bullet.moveBullet2();
					}
				}
				// 奖励的创建
				if (count % 100 == 0) {
					int h = (int) (Math.random() * 3);
					int aSpeed = (int) (Math.random() * 5 + 3);
					Award award = new Award((int) (Math.random() * 300), -50, awa[h], aSpeed, h, this);
					awards.add(award);
				}
				// 奖励的移动
				for (int i = 0; i < awards.size(); i++) {
					Award award = awards.get(i);
					award.moveAward();
				}

				try {
					Thread.sleep(20);
				} catch (InterruptedException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				}
				repaint();
			}
		}
	}
	// 定义两个方法
	public boolean suspend() {
		suspend = true;
		return suspend;
	}

	public synchronized boolean resume() {
		suspend = false;
		notify();
		return suspend;
	}
}

4.奖励类

public class Award {
	int ax,ay;
	Image aImg;
	int aSpeed;
	int kind;
	PlaneJPanel mainview;
	public Award(int ax, int ay, Image aImg, int aSpeed, int kind,PlaneJPanel mainview) {
		super();
		this.ax = ax;
		this.ay = ay;
		this.aImg = aImg;
		this.aSpeed = aSpeed;
		this.kind = kind;
		this.mainview = mainview;
	}
	public void drawAward(Graphics g) {
		g.drawImage(aImg, ax, ay, null);
	}
	public void moveAward() {
		ay+=aSpeed;
	}

}

5.三颗子弹实现细节

（1）在子弹类添加移动方法

//子弹移动的方法
	public void moveBullet0() {
		by-=bSpeed;
		if (by<0) {
			exist=false;
		}
	}
	public void moveBullet1() {
		bx-=bSpeed;
		by-=bSpeed;
		if (by<0) {
			exist=false;
		}
	}
	public void moveBullet2() {
		bx+=bSpeed;
		by-=bSpeed;
		if (by<0) {
			exist=false;
		}
	}

（2）在run方法中修改子弹移动的代码

// 子弹移动的方法
				for (int i = 0; i < bullets.size(); i++) {
					Bullet bullet = bullets.get(i);
					if (bullet.bDirection == 0) {
						bullet.moveBullet0();
					}
					if (bullet.bDirection == 1) {
						bullet.moveBullet1();
					}
					if (bullet.bDirection == 2) {
						bullet.moveBullet2();
					}
				}

6.奖励的实现

（1） 创建奖励类 Award

public class Award {
	int ax,ay;
	Image aImg;
	int aSpeed;
	int kind;
	PlaneJPanel mainview;
	public Award(int ax, int ay, Image aImg, int aSpeed, int kind,PlaneJPanel mainview) {
		super();
		this.ax = ax;
		this.ay = ay;
		this.aImg = aImg;
		this.aSpeed = aSpeed;
		this.kind = kind;
		this.mainview = mainview;
	}
	public void drawAward(Graphics g) {
		g.drawImage(aImg, ax, ay, null);
	}
	public void moveAward() {
		ay+=aSpeed;
	}

}

（2）在画布类添加属性

// 奖励存储图片对象
	List<Award> awards = new ArrayList<Award>();
	static BufferedImage[] awa = new BufferedImage[3];

（3）在静态代码块中加载奖励图片

static {// 静态代码块中进行最先的加载
		try {
			startImg = ImageIO.read(new File("image/GameInterface/interface_1.png"));
			p[0] = ImageIO.read(new File("image/1.png"));
			p[1] = ImageIO.read(new File("image/2.png"));
			bImg = ImageIO.read(new File("image/bullet/bullet_1.png"));


			awa[0] = ImageIO.read(new File("image/award/award_1.png"));
			awa[1] = ImageIO.read(new File("image/award/award_2.png"));
			awa[2] = ImageIO.read(new File("Image/award/award_3.png"));


		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}

（4）在run方法中添加奖励

// 奖励的创建
				if (count % 100 == 0) {
					int h = (int) (Math.random() * 3);
					int aSpeed = (int) (Math.random() * 5 + 3);
					Award award = new Award((int) (Math.random() * 300), -50, awa[h], aSpeed, h, this);
					awards.add(award);
				}
				// 奖励的移动
				for (int i = 0; i < awards.size(); i++) {
					Award award = awards.get(i);
					award.moveAward();
				}

（5）在paint 方法中画出奖励

// 画奖励
		for (int i = 0; i < awards.size(); i++) {
			Award award = awards.get(i);
			award.drawAward(g);
		}

7.画血量

（1）添加血量属性

// 飞机的血量
	int blood = 1;

（2）在paint方法中画出

//画血量
		if(ck == false){
			for (int i = 0; i < blood; i++) {
				g.drawImage(awa[0], 37 * i, 10, null);
			}
		}