• java小游戏-java小游戏-飞机大战

    java小游戏-java小游戏-飞机大战

    连接视频

    1 窗口创建

    创建GameWin类

    public class GameWin extends JFrame {

    public void launch(){
        //设置窗口是否可见
         this.setVisible(true);
        //设置窗口大小
        this.setSize(600,600);
        //设置窗口位置
        this.setLocationRelativeTo(null);
        //设置窗口标题
        this.setTitle("飞机大战");

        this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        //不可修改边框
        this.setResizable(false);
    }

    public static void main(String[] args) {
        GameWin gameWin = new GameWin();
        gameWin.launch();
    }
}

    • 1
    • 2
    • 3
    • 4
    • 5
    • 6
    • 7
    • 8
    • 9
    • 10
    • 11
    • 12
    • 13
    • 14
    • 15
    • 16
    • 17
    • 18
    • 19
    • 20
    • 21
    • 22

    2 背景图片添加

    先导入图片在项目下img文件下

    创建GameUtils类

    public class GameUtils {
    //背景图片
    public static Image bgImage = Toolkit.getDefaultToolkit().getImage("img/bg.jpg");
}

    • 1
    • 2
    • 3
    • 4

    在GameWin类重写paint方法

    @Override
public void paint(Graphics g) {
    g.drawImage(GameUtils.bgImage,0,0,null);
}

    • 1
    • 2
    • 3
    • 4

    3 启动页面制作

    在GameUtils类添加参数

    //boss图片
public static Image bossImage = Toolkit.getDefaultToolkit().getImage("img/boss.png");
//爆炸图片
public static Image explodeImage = Toolkit.getDefaultToolkit().getImage("img/explode/e6.gif");

    • 1
    • 2
    • 3
    • 4

    在GameWin类添加状态

    //游戏状态 0 未开始 1 游戏中 2 暂停 3 通关失败 4 通关成功
public static int state = 0;

@Override
public void paint(Graphics g) {
    if(state == 0){
        g.drawImage(GameUtils.bgImage,0,0,null);
        g.drawImage(GameUtils.bossImage,220,120,null);
        g.drawImage(GameUtils.explodeImage,270,350,null);
        g.setColor(Color.yellow);
        g.setFont(new Font("仿宋",Font.BOLD,40));
        g.drawString("点击开始游戏",180,300);
    }
}

    • 1
    • 2
    • 3
    • 4
    • 5
    • 6
    • 7
    • 8
    • 9
    • 10
    • 11
    • 12
    • 13
    • 14

    4 启动页面点击事件

    在GameWin类launch方法添加鼠标点击事件

    public void launch(){
   ...

    //鼠标点击事件
    this.addMouseListener(new MouseAdapter() {
        @Override
        public void mouseClicked(MouseEvent e) {
            if(e.getButton() == 1 && state == 0){//鼠标左键点击
                state = 1;
                repaint();
            }
        }
    });

}

@Override
public void paint(Graphics g) {
    ...
    if(state == 1){
        g.drawImage(GameUtils.bgImage,0,0,null);
        g.drawImage(GameUtils.bossImage,220,120,null);
        g.drawImage(GameUtils.explodeImage,270,350,null);
        g.setColor(Color.yellow);
        g.setFont(new Font("仿宋",Font.BOLD,40));
        g.drawString("游戏开始了",180,300);
    }
}

    • 1
    • 2
    • 3
    • 4
    • 5
    • 6
    • 7
    • 8
    • 9
    • 10
    • 11
    • 12
    • 13
    • 14
    • 15
    • 16
    • 17
    • 18
    • 19
    • 20
    • 21
    • 22
    • 23
    • 24
    • 25
    • 26
    • 27
    • 28

    5 游戏物体父类的编写

    创建GameObj类

    public class GameObj {
    Image img;
    //坐标
    int x,y;
    //宽高
    int wight,height;

    //移动速度
    double speed;
    //窗口
    GameWin frame;

    public GameObj() { }

    public GameObj(Image img, int x, int y, double speed) {
        this.img = img;
        this.x = x;
        this.y = y;
        this.speed = speed;
    }

    public GameObj(Image img, int x, int y, int wight, int height, double speed, GameWin frame) {
        this.img = img;
        this.x = x;
        this.y = y;
        this.wight = wight;
        this.height = height;
        this.speed = speed;
        this.frame = frame;
    }

    //绘制自身方法
    public void paintSelf(Graphics g){
        g.drawImage(img,x,y,null);
    }

    //获取矩形对象，用于碰撞检测
    public Rectangle getRec(){
        return new Rectangle(x,y,wight,height);
    }

    public Image getImg() { return img; }
    public void setImg(Image img) { this.img = img; }
    public int getX() { return x; }
    public void setX(int x) { this.x = x; }
    public int getY() { return y; }
    public void setY(int y) { this.y = y; }
    public int getWight() { return wight; }
    public void setWight(int wight) { this.wight = wight; }
    public int getHeight() { return height; }
    public void setHeight(int height) { this.height = height; }
    public double getSpeed() { return speed; }
    public void setSpeed(double speed) { this.speed = speed; }
    public GameWin getGameWin() { return frame; }
    public void setGameWin(GameWin frame) { this.frame = frame; }
}

    • 1
    • 2
    • 3
    • 4
    • 5
    • 6
    • 7
    • 8
    • 9
    • 10
    • 11
    • 12
    • 13
    • 14
    • 15
    • 16
    • 17
    • 18
    • 19
    • 20
    • 21
    • 22
    • 23
    • 24
    • 25
    • 26
    • 27
    • 28
    • 29
    • 30
    • 31
    • 32
    • 33
    • 34
    • 35
    • 36
    • 37
    • 38
    • 39
    • 40
    • 41
    • 42
    • 43
    • 44
    • 45
    • 46
    • 47
    • 48
    • 49
    • 50
    • 51
    • 52
    • 53
    • 54
    • 55
    • 56

    6 背景的移动

    创建BgObj类

    public class BgObj extends GameObj{
	@Override
    public Image getImg() {
        return super.getImg();
    }

    public BgObj(){}

    public BgObj(Image img, int x, int y, double speed) {
        super(img, x, y, speed);
    }

    @Override
    public void paintSelf(Graphics g) {
        super.paintSelf(g);
        y += speed;
    }
}

    • 1
    • 2
    • 3
    • 4
    • 5
    • 6
    • 7
    • 8
    • 9
    • 10
    • 11
    • 12
    • 13
    • 14
    • 15
    • 16
    • 17
    • 18

    在GameWin类中引用

    //背景图片
BgObj bgObj = new BgObj(GameUtils.bgImage,0,-2000,2);

public void launch(){
    ...

    while (true){
        repaint();
        try {
            Thread.sleep(25);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
    }

}

@Override
public void paint(Graphics g) {
    ...
    if(state == 1){
       bgObj.paintSelf(g);
    }
}

    • 1
    • 2
    • 3
    • 4
    • 5
    • 6
    • 7
    • 8
    • 9
    • 10
    • 11
    • 12
    • 13
    • 14
    • 15
    • 16
    • 17
    • 18
    • 19
    • 20
    • 21
    • 22
    • 23
    • 24

    7 双缓存的添加

    在GameWin类添加参数

    Image offScreenImage = null;
//宽高
int width = 600;
int height = 600;

public void launch(){
    //设置窗口是否可见
     this.setVisible(true);
    //设置窗口大小
   ...
}

@Override
public void paint(Graphics g) {
    if(offScreenImage == null){
        offScreenImage = createImage(width,height);
    }
    Graphics gImage = offScreenImage.getGraphics();
    gImage.fillRect(0,0,width,height);
    if(state == 0){
        gImage.drawImage(GameUtils.bgImage,220,120,null);
        gImage.drawImage(GameUtils.bossImage,220,120,null);
        gImage.drawImage(GameUtils.explodeImage,270,350,null);
        gImage.setColor(Color.yellow);
        gImage.setFont(new Font("仿宋",Font.BOLD,40));
        gImage.drawString("点击开始游戏",180,300);
    }
    if(state == 1){
       bgObj.paintSelf(gImage);
    }
    g.drawImage(offScreenImage,0,0,width,height,null);
}

    • 1
    • 2
    • 3
    • 4
    • 5
    • 6
    • 7
    • 8
    • 9
    • 10
    • 11
    • 12
    • 13
    • 14
    • 15
    • 16
    • 17
    • 18
    • 19
    • 20
    • 21
    • 22
    • 23
    • 24
    • 25
    • 26
    • 27
    • 28
    • 29
    • 30
    • 31
    • 32

    8 背景图片的循环出现

    在BgObj类修改paintSelf方法

    @Override
public void paintSelf(Graphics g) {
    super.paintSelf(g);
    y += speed;
    if(y >= 0){
        y = -2000;
    }
}

    • 1
    • 2
    • 3
    • 4
    • 5
    • 6
    • 7
    • 8

    9 添加我方飞机

    在GameUtils类添加常量

    //我方战斗机图片
public static Image planeImg = Toolkit.getDefaultToolkit().getImage("img/plane.png");

    • 1
    • 2

    创建PlaneObj类

    public class PlaneObj extends GameObj {
    @Override
    public Image getImg() {
        return super.getImg();
    }

    public PlaneObj() {
        super();
    }

    public PlaneObj(Image img, int x, int y, int width, int height, double speed, GameWin frame) {
        super(img, x, y, width, height, speed, frame);
        this.frame.addMouseMotionListener(new MouseAdapter() {
            @Override
            public void mouseMoved(MouseEvent e) {
                PlaneObj.super.x = e.getX() - 11;
                PlaneObj.super.y = e.getY() - 16;
            }
        });
    }

    @Override
    public void paintSelf(Graphics gImage) {
        super.paintSelf(gImage);
    }

    @Override
    public Rectangle getRec() {
        return super.getRec();
    }
}

    • 1
    • 2
    • 3
    • 4
    • 5
    • 6
    • 7
    • 8
    • 9
    • 10
    • 11
    • 12
    • 13
    • 14
    • 15
    • 16
    • 17
    • 18
    • 19
    • 20
    • 21
    • 22
    • 23
    • 24
    • 25
    • 26
    • 27
    • 28
    • 29
    • 30
    • 31

    在GameWin中引用

    //我方飞机对象
public PlaneObj planeObj = new PlaneObj(GameUtils.planeImg,290,550,20,30,0,this);

@Override
public void paint(Graphics g) {
    ...
    if(state == 1){
        //游戏中
       bgObj.paintSelf(gImage);
       planeObj.paintSelf(gImage);
    }
    g.drawImage(offScreenImage,0,0,width,height,null);
}

    • 1
    • 2
    • 3
    • 4
    • 5
    • 6
    • 7
    • 8
    • 9
    • 10
    • 11
    • 12
    • 13

    10 添加首颗子弹

    在GameUtils类添加常量

    //我方子弹图片
public static Image shellImg = Toolkit.getDefaultToolkit().getImage("img/shell.png");

    • 1
    • 2

    创建ShellObj类

    public class ShellObj extends GameObj{
    @Override
    public Image getImg() {
        return super.getImg();
    }

    public ShellObj() {
        super();
    }

    public ShellObj(Image img, int x, int y, int wight, int height, double speed, GameWin gameWin) {
        super(img, x, y, wight, height, speed, gameWin);
    }

    @Override
    public void paintSelf(Graphics g) {
        super.paintSelf(g);
        y -= speed;
    }

    @Override
    public Rectangle getRec() {
        return super.getRec();
    }
}

    • 1
    • 2
    • 3
    • 4
    • 5
    • 6
    • 7
    • 8
    • 9
    • 10
    • 11
    • 12
    • 13
    • 14
    • 15
    • 16
    • 17
    • 18
    • 19
    • 20
    • 21
    • 22
    • 23
    • 24
    • 25

    在GameWin类中引用

    //我方子弹
ShellObj shellObj = new ShellObj(GameUtils.shellImg,planeObj.getX()+3,planeObj.getY()-16,14,29,5,this);

@Override
public void paint(Graphics g) {
   ...
    if(state == 1){
        //游戏中
       bgObj.paintSelf(gImage);
       planeObj.paintSelf(gImage);
       shellObj.paintSelf(gImage);
    }
    g.drawImage(offScreenImage,0,0,width,height,null);
}

    • 1
    • 2
    • 3
    • 4
    • 5
    • 6
    • 7
    • 8
    • 9
    • 10
    • 11
    • 12
    • 13
    • 14

    11 我方子弹的批量添加

    在GameUtils类添加参数

    //所有游戏物体的集合
public static List<GameObj> gameObjList = new ArrayList<>();
//我方子弹的集合
public static List<ShellObj> shellObjList = new ArrayList<>();

    • 1
    • 2
    • 3
    • 4

    在GameWin类中生成子弹

    //    //我方子弹
//    ShellObj shellObj = new ShellObj(GameUtils.shellImg,planeObj.getX()+3,planeObj.getY()-16,14,29,5,this);
//游戏的重绘次数
int count = 1;

public void launch() {
    ...
	//设置窗口标题
    this.setTitle("飞机大战");

     GameUtils.gameObjList.add(bgObj);
     GameUtils.gameObjList.add(planeObj);

    while (true) {
        if (state == 1) {
            createObj();
            repaint();
        }
        try {
            Thread.sleep(25);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
    }
}

@Override
public void paint(Graphics g) {
    ...
    if (state == 1) {
        //游戏中
        for (int i = 0; i < GameUtils.gameObjList.size(); i++) {
            GameUtils.gameObjList.get(i).paintSelf(gImage);
        }
    }
    g.drawImage(offScreenImage, 0, 0, width, height, null);
    count++;
}

//创建对象
void createObj() {
    //我方子弹
    if (count%15 == 0) {
        GameUtils.shellObjList.add(new ShellObj(GameUtils.shellImg, planeObj.getX() + 3, planeObj.getY() - 16, 14, 29, 5, this));
        GameUtils.gameObjList.add(GameUtils.shellObjList.get(GameUtils.shellObjList.size()-1));
    }
}

    • 1
    • 2
    • 3
    • 4
    • 5
    • 6
    • 7
    • 8
    • 9
    • 10
    • 11
    • 12
    • 13
    • 14
    • 15
    • 16
    • 17
    • 18
    • 19
    • 20
    • 21
    • 22
    • 23
    • 24
    • 25
    • 26
    • 27
    • 28
    • 29
    • 30
    • 31
    • 32
    • 33
    • 34
    • 35
    • 36
    • 37
    • 38
    • 39
    • 40
    • 41
    • 42
    • 43
    • 44
    • 45
    • 46
    • 47

    12 敌方飞机的批量添加

    在GameUtils类添加参数

    //敌机图片
public static Image enemyImg = Toolkit.getDefaultToolkit().getImage("img/enemy.png");
//敌机的集合
public static List<EnemyObj> enemyObjList = new ArrayList<>();

    • 1
    • 2
    • 3
    • 4

    创建EnemyObj类

    public class EnemyObj extends GameObj {

    public EnemyObj() {
        super();
    }

    public EnemyObj(Image img, int x, int y, int width, int height, double speed, GameWin frame) {
        super(img, x, y, width, height, speed, frame);
    }

    @Override
    public void paintSelf(Graphics gImage) {
        super.paintSelf(gImage);
        y += speed;
    }

    @Override
    public Rectangle getRec() {
        return super.getRec();
    }
}

    • 1
    • 2
    • 3
    • 4
    • 5
    • 6
    • 7
    • 8
    • 9
    • 10
    • 11
    • 12
    • 13
    • 14
    • 15
    • 16
    • 17
    • 18
    • 19
    • 20
    • 21

    在GameWin类中创建

     //创建对象
void createObj() {
    //我方子弹
    if (count%15 == 0) {
        GameUtils.shellObjList.add(new ShellObj(GameUtils.shellImg, planeObj.getX() + 3, planeObj.getY() - 16, 14, 29, 5, this));
        GameUtils.gameObjList.add(GameUtils.shellObjList.get(GameUtils.shellObjList.size()-1));
    }
    //敌机创建
    if (count%15 == 0) {
        GameUtils.enemyObjList.add(new EnemyObj(GameUtils.enemyImg, (int)(Math.random()*12)*50,0,49,36,5,this));
        GameUtils.gameObjList.add(GameUtils.enemyObjList.get(GameUtils.enemyObjList.size()-1));
    }
}

    • 1
    • 2
    • 3
    • 4
    • 5
    • 6
    • 7
    • 8
    • 9
    • 10
    • 11
    • 12
    • 13

    13 我方子弹与敌人飞机碰撞检测

    在EnemyObj类paintSelf方法添加判断

    @Override
public void paintSelf(Graphics gImage) {
    super.paintSelf(gImage);
    y += speed;
    //碰撞检测
    for (ShellObj shellObj : GameUtils.shellObjList) {
        if(this.getRec().intersects(shellObj.getRec())){
            System.out.println("碰撞了");
        }
    }
}

    • 1
    • 2
    • 3
    • 4
    • 5
    • 6
    • 7
    • 8
    • 9
    • 10
    • 11

    14 我方子弹与敌方飞机碰撞后处理

    在GameUtils类添加参数

    //要删除元素的集合
public static List<GameObj> removeList = new ArrayList<>();

    • 1
    • 2

    在EnemyObj类修改paintSelf方法

    @Override
public void paintSelf(Graphics gImage) {
    super.paintSelf(gImage);
    y += speed;
    //碰撞检测
    for (ShellObj shellObj : GameUtils.shellObjList) {
        if(this.getRec().intersects(shellObj.getRec())){
            shellObj.setX(-100);
            shellObj.setY(-100);
            this.x = -200;
            this.y = -200;
            GameUtils.removeList.add(shellObj);
            GameUtils.removeList.add(this);
        }
    }
}

    • 1
    • 2
    • 3
    • 4
    • 5
    • 6
    • 7
    • 8
    • 9
    • 10
    • 11
    • 12
    • 13
    • 14
    • 15
    • 16

    在GameWin类修改paint方法

    @Override
public void paint(Graphics g) {
    ...
    if (state == 1) {
        //游戏中
        for (int i = 0; i < GameUtils.gameObjList.size(); i++) {
            GameUtils.gameObjList.get(i).paintSelf(gImage);
        }
        GameUtils.gameObjList.removeAll(GameUtils.removeList);
    }
    g.drawImage(offScreenImage, 0, 0, width, height, null);
    count++;
}

    • 1
    • 2
    • 3
    • 4
    • 5
    • 6
    • 7
    • 8
    • 9
    • 10
    • 11
    • 12
    • 13

    15 我方飞机与敌方飞机的碰撞检测

    在EnemyObj类修改paintSelf方法

    @Override
public void paintSelf(Graphics gImage) {
    super.paintSelf(gImage);
    y += speed;
    //敌我飞机碰撞检测
    if(this.getRec().intersects(this.frame.planeObj.getRec())){
        GameWin.state = 3;
    }

    ...
}

    • 1
    • 2
    • 3
    • 4
    • 5
    • 6
    • 7
    • 8
    • 9
    • 10
    • 11

    在GameWin类修改paint方法

    @Override
public void paint(Graphics g) {
    ...
    if (state == 3) {
        //失败
        gImage.drawImage(GameUtils.explodeImage, planeObj.getX()-33,planeObj.getY()-50, null);
        gImage.setColor(Color.red);
        gImage.setFont(new Font("仿宋", Font.BOLD, 50));
        gImage.drawString("GAME OVER", 180, 300);
    }
    g.drawImage(offScreenImage, 0, 0, width, height, null);
    count++;
}

    • 1
    • 2
    • 3
    • 4
    • 5
    • 6
    • 7
    • 8
    • 9
    • 10
    • 11
    • 12
    • 13

    16 敌方boss的添加和移动

    创建BossObj类

    public class BossObj extends GameObj {

    public BossObj(Image img, int x, int y, int width, int height, double speed, GameWin frame) {
        super(img, x, y, width, height, speed, frame);
    }

    @Override
    public void paintSelf(Graphics gImage) {
        super.paintSelf(gImage);
        if (x > 550 || x < -50) {
            speed = -speed;
        }
        x += speed;

    }

    @Override
    public Rectangle getRec() {
        return super.getRec();
    }
}

    • 1
    • 2
    • 3
    • 4
    • 5
    • 6
    • 7
    • 8
    • 9
    • 10
    • 11
    • 12
    • 13
    • 14
    • 15
    • 16
    • 17
    • 18
    • 19
    • 20
    • 21

    在GameWin类中引用

    //敌方boss对象
public BossObj bossObj = new BossObj(GameUtils.bossImage,250,35,155,100,5,this);

public void launch() {
    ...
    this.setTitle("飞机大战");

    GameUtils.gameObjList.add(bgObj);
    GameUtils.gameObjList.add(planeObj);
    GameUtils.gameObjList.add(bossObj);

    ...

}

    • 1
    • 2
    • 3
    • 4
    • 5
    • 6
    • 7
    • 8
    • 9
    • 10
    • 11
    • 12
    • 13
    • 14

    17 为敌方boss添加子弹

    创建BulletObj类

    public class BulletObj extends GameObj {
    public BulletObj(Image img, int x, int y, int width, int height, double speed, GameWin frame) {
        super(img, x, y, width, height, speed, frame);
    }

    @Override
    public void paintSelf(Graphics gImage) {
        super.paintSelf(gImage);
        y += speed;
    }

    @Override
    public Rectangle getRec() {
        return super.getRec();
    }
}

    • 1
    • 2
    • 3
    • 4
    • 5
    • 6
    • 7
    • 8
    • 9
    • 10
    • 11
    • 12
    • 13
    • 14
    • 15
    • 16

    在GameUtils类中添加参数

    //敌机子弹图片
public static Image bulletImg = Toolkit.getDefaultToolkit().getImage("img/bullet.png");

//敌机子弹的集合
public static List<BulletObj> bulletObjList = new ArrayList<>();

    • 1
    • 2
    • 3
    • 4
    • 5

    在GameWin生成子弹

    //创建对象
void createObj() {
   ...
    //敌机子弹
    if (count%15 == 0) {
        GameUtils.bulletObjList.add(new BulletObj(GameUtils.bulletImg, bossObj.getX() + 76, bossObj.getY() + 85, 15, 25, 5, this));
        GameUtils.gameObjList.add(GameUtils.bulletObjList.get(GameUtils.bulletObjList.size()-1));
    }
}

    • 1
    • 2
    • 3
    • 4
    • 5
    • 6
    • 7
    • 8
    • 9

    18 我方飞机与敌方的子弹碰撞检测

    在BulletObj类paintSelf方法添加判断

    @Override
public void paintSelf(Graphics gImage) {
    super.paintSelf(gImage);
    y += speed;
    //敌方子弹与我方飞机的碰撞检测
    if (this.getRec().intersects(this.frame.planeObj.getRec())){
        GameWin.state = 3;
    }
}

    • 1
    • 2
    • 3
    • 4
    • 5
    • 6
    • 7
    • 8
    • 9

    19 我方飞机与敌方boss的碰撞检测

    在PlaneObj类paintSelf方法添加判断

    @Override
public void paintSelf(Graphics gImage) {
    super.paintSelf(gImage);
    //我方飞机与敌方boss的碰撞检测
    if (this.frame.bossObj != null && this.getRec().intersects(this.frame.bossObj.getRec())){
        GameWin.state = 3;
    }
}

    • 1
    • 2
    • 3
    • 4
    • 5
    • 6
    • 7
    • 8

    20 计分面板的编写

    在GameUtils类添加方法

    //绘制字符串的工具类
public static void drawWord(Graphics gImage,String str,Color color,int size,int x,int y){
    gImage.setColor(color);
    gImage.setFont(new Font("仿宋",Font.BOLD,size));
    gImage.drawString(str,x,y);
}

    • 1
    • 2
    • 3
    • 4
    • 5
    • 6

    在GameWin类添加参数

    //游戏得分
    public static int score = 0;
   
@Override
public void paint(Graphics g) {
   。。。
    if (state == 0) {
        //未开始
        gImage.drawImage(GameUtils.bgImage, 220, 120, null);
        gImage.drawImage(GameUtils.bossImage, 220, 120, null);
        gImage.drawImage(GameUtils.explodeImage, 270, 350, null);
        gImage.setColor(Color.yellow);
        GameUtils.drawWord(gImage,"点击开始游戏",Color.yellow,40,180,300);
    }
    if (state == 1) {
        //游戏中
        for (int i = 0; i < GameUtils.gameObjList.size(); i++) {
            GameUtils.gameObjList.get(i).paintSelf(gImage);
        }
        GameUtils.gameObjList.removeAll(GameUtils.removeList);
    }
    if (state == 3) {
        //失败
        gImage.drawImage(GameUtils.explodeImage, planeObj.getX()-33,planeObj.getY()-50, null);
        GameUtils.drawWord(gImage,"GAME OVER",Color.RED,50,180,300);
    }
    GameUtils.drawWord(gImage,score+" 分",Color.green,40,30,100);
    g.drawImage(offScreenImage, 0, 0, width, height, null);
    count++;
}

    • 1
    • 2
    • 3
    • 4
    • 5
    • 6
    • 7
    • 8
    • 9
    • 10
    • 11
    • 12
    • 13
    • 14
    • 15
    • 16
    • 17
    • 18
    • 19
    • 20
    • 21
    • 22
    • 23
    • 24
    • 25
    • 26
    • 27
    • 28
    • 29
    • 30

    在EnemyObj类paintSelf方法自增

    @Override
public void paintSelf(Graphics gImage) {
   ...
    //碰撞检测
    for (ShellObj shellObj : GameUtils.shellObjList) {
        if(this.getRec().intersects(shellObj.getRec())){
            shellObj.setX(-100);
            shellObj.setY(-100);
            this.x = -200;
            this.y = -200;
            GameUtils.removeList.add(shellObj);
            GameUtils.removeList.add(this);
            GameWin.score++;
        }
    }
}

    • 1
    • 2
    • 3
    • 4
    • 5
    • 6
    • 7
    • 8
    • 9
    • 10
    • 11
    • 12
    • 13
    • 14
    • 15
    • 16

    21 游戏规则的改变

    在GameWin类添加参数

    //敌方boss对象
public BossObj bossObj = null;

//敌机出现的数量
int enemyCount = 0;

public void launch() {
   ...

    GameUtils.gameObjList.add(bgObj);
    GameUtils.gameObjList.add(planeObj);
    //GameUtils.gameObjList.add(bossObj);

    ...

}


//创建对象
void createObj() {
   //敌机子弹
   if (count%15 == 0 && bossObj != null) {
        GameUtils.bulletObjList.add(new BulletObj(GameUtils.bulletImg, bossObj.getX() + 76, bossObj.getY() + 85, 15, 25, 5, this));
        GameUtils.gameObjList.add(GameUtils.bulletObjList.get(GameUtils.bulletObjList.size()-1));
    }
    //敌机创建
    if (count%15 == 0) {
        GameUtils.enemyObjList.add(new EnemyObj(GameUtils.enemyImg, (int)(Math.random()*12)*50,0,49,36,5,this));
        GameUtils.gameObjList.add(GameUtils.enemyObjList.get(GameUtils.enemyObjList.size()-1));
        enemyCount++;
    }
   ...
    if(enemyCount > 100 && bossObj == null){
        bossObj = new BossObj(GameUtils.bossImage,250,35,155,100,5,this);
        GameUtils.gameObjList.add(bossObj);
    }
}

    • 1
    • 2
    • 3
    • 4
    • 5
    • 6
    • 7
    • 8
    • 9
    • 10
    • 11
    • 12
    • 13
    • 14
    • 15
    • 16
    • 17
    • 18
    • 19
    • 20
    • 21
    • 22
    • 23
    • 24
    • 25
    • 26
    • 27
    • 28
    • 29
    • 30
    • 31
    • 32
    • 33
    • 34
    • 35
    • 36
    • 37

    22 为boss添加生命值

    在BossObj类添加参数判断

    //boos生命值
int life = 10;

@Override
public void paintSelf(Graphics gImage) {
    super.paintSelf(gImage);
    if (x > 550 || x < -50) {
        speed = -speed;
    }
    x += speed;
    for (ShellObj shellObj : GameUtils.shellObjList){
        if (this.getRec().intersects(shellObj.getRec())){
            shellObj.setX(-100);
            shellObj.setY(100);
            GameUtils.removeList.add(shellObj);
            life--;
        }
        if (life <= 0){
            GameWin.state = 4;
        }
    }
}

    • 1
    • 2
    • 3
    • 4
    • 5
    • 6
    • 7
    • 8
    • 9
    • 10
    • 11
    • 12
    • 13
    • 14
    • 15
    • 16
    • 17
    • 18
    • 19
    • 20
    • 21
    • 22

    在GameWin类添加游戏通关绘制

    @Override
public void paint(Graphics g) {
    ...
    if (state == 4) {
        //通关
        gImage.drawImage(GameUtils.explodeImage, bossObj.getX() + 30,bossObj.getY(), null);
        GameUtils.drawWord(gImage,"游戏通关",Color.green,50,190,300);
    }
    GameUtils.drawWord(gImage,score+" 分",Color.green,40,30,100);
    g.drawImage(offScreenImage, 0, 0, width, height, null);
    count++;
}

    • 1
    • 2
    • 3
    • 4
    • 5
    • 6
    • 7
    • 8
    • 9
    • 10
    • 11
    • 12

    23 游戏的暂停功能

    在GameWin类中launch方法添加键盘监听事件

    public void launch() {
   ...
    //键盘监听事件
    this.addKeyListener(new KeyAdapter() {
        @Override
        public void keyPressed(KeyEvent e) {
            if (e.getKeyCode() == KeyEvent.VK_SPACE) {
                switch (state){
                    case 1:
                        state = 2;
                        break;
                    case 2:
                        state = 1;
                        break;
                    default:
                }
            }
        }
    });
	...
}

    • 1
    • 2
    • 3
    • 4
    • 5
    • 6
    • 7
    • 8
    • 9
    • 10
    • 11
    • 12
    • 13
    • 14
    • 15
    • 16
    • 17
    • 18
    • 19
    • 20
    • 21

    24 子弹和敌机的越界消失

    在ShellObj添加判断

    @Override
public void paintSelf(Graphics g) {
    super.paintSelf(g);
    y -= speed;
    //我方子弹的越界消失 条件 y < 0  改变后的坐标 (-100,100)
    if (y < 0){
        this.x = -100;
        this.y = 100;
        GameUtils.removeList.add(this);
    }
}

    • 1
    • 2
    • 3
    • 4
    • 5
    • 6
    • 7
    • 8
    • 9
    • 10
    • 11

    在EnemyObj添加判断

    @Override
public void paintSelf(Graphics gImage) {
   ...
    //敌机的越界消失 判断条件 y > 600  改变后的坐标(-200,-200)
    if (y > 600){
        this.x = -200;
        this.y = 200;
        GameUtils.removeList.add(this);
    }

   ...
}

    • 1
    • 2
    • 3
    • 4
    • 5
    • 6
    • 7
    • 8
    • 9
    • 10
    • 11
    • 12

    在BulletObj添加判断

    @Override
public void paintSelf(Graphics gImage) {
    ...
    //敌方子弹的越界消失 条件 y > 600  改变后的坐标(-300,300)
    if (y > 600){
        this.x = -300;
        this.y = 300;
        GameUtils.removeList.add(this);
    }
}

    • 1
    • 2
    • 3
    • 4
    • 5
    • 6
    • 7
    • 8
    • 9
    • 10

    在GameWin类添加测试控制台输出

    @Override
public void paint(Graphics g) {
    ...
    count++;
    System.out.println(GameUtils.gameObjList.size());
}

    • 1
    • 2
    • 3
    • 4
    • 5
    • 6

    25 为敌机添加爆炸效果图

    在GameObj类添加构造器

    public GameObj(int x, int y) {
    this.x = x;
    this.y = y;
}

    • 1
    • 2
    • 3
    • 4

    创建ExplodeObj类

    public class ExplodeObj extends GameObj {

    static Image[] pic = new Image[16];

    int explodeCount = 0;

    static {
        for (int i = 0; i < pic.length; i++) {
            pic[i] = Toolkit.getDefaultToolkit().getImage("img/explode/e"+(i+1)+".gif");
        }
    }

    public ExplodeObj(int x, int y) {
        super(x, y);
    }

    @Override
    public void paintSelf(Graphics gImage) {
        if (explodeCount < 16){
            super.img = pic[explodeCount];
            super.paintSelf(gImage);
            explodeCount++;
        }
    }
}

    • 1
    • 2
    • 3
    • 4
    • 5
    • 6
    • 7
    • 8
    • 9
    • 10
    • 11
    • 12
    • 13
    • 14
    • 15
    • 16
    • 17
    • 18
    • 19
    • 20
    • 21
    • 22
    • 23
    • 24
    • 25

    在GameUtils添加参数

    //爆炸的集合
public static List<ExplodeObj> explodeObjList = new ArrayList<>();

    • 1
    • 2

    在EnemyObj类添加判断

    @Override
public void paintSelf(Graphics gImage) {
   ...
    //碰撞检测
    for (ShellObj shellObj : GameUtils.shellObjList) {
        if(this.getRec().intersects(shellObj.getRec())){
            ExplodeObj explodeObj = new ExplodeObj(x,y);
            GameUtils.explodeObjList.add(explodeObj);
            GameUtils.removeList.add(explodeObj);
            shellObj.setX(-100);
            shellObj.setY(-100);
            this.x = -200;
            this.y = -200;
            GameUtils.removeList.add(shellObj);
            GameUtils.removeList.add(this);
            GameWin.score++;
        }
    }
}

    • 1
    • 2
    • 3
    • 4
    • 5
    • 6
    • 7
    • 8
    • 9
    • 10
    • 11
    • 12
    • 13
    • 14
    • 15
    • 16
    • 17
    • 18
    • 19

    在GameWin类添加

     @Override
public void paint(Graphics g) {
    ...
    if (state == 1) {
        GameUtils.gameObjList.addAll(GameUtils.explodeObjList);
        //游戏中
        for (int i = 0; i < GameUtils.gameObjList.size(); i++) {
            GameUtils.gameObjList.get(i).paintSelf(gImage);
        }
        GameUtils.gameObjList.removeAll(GameUtils.removeList);
    }
    ...
}

    • 1
    • 2
    • 3
    • 4
    • 5
    • 6
    • 7
    • 8
    • 9
    • 10
    • 11
    • 12
    • 13

    26 为敌方boss添加血条

    在BossObj类的paintSelf方法添加绘制

    @Override
public void paintSelf(Graphics gImage) {
    ...
    //血条的白色背景
    gImage.setColor(Color.white);
    gImage.fillRect(20,40,100,10);
    //血条的绘制
    gImage.setColor(Color.red);
    gImage.fillRect(20,40,life * 100 / 10,10);
}

    • 1
    • 2
    • 3
    • 4
    • 5
    • 6
    • 7
    • 8
    • 9
    • 10
  • 相关阅读:
    Javascript——处理字符串单引号
    【无标题】
    Python优雅遍历字典删除元素的方法
    html实现图片裁剪处理(附源码)
    Git基础知识及基本操作
    element-ui 表单校验・大全
    在线流程图和思维导图开发技术详解（五）
    idea一些常用的快捷键
    【STL***vector容器三】
    error: #20: identifier “PWMC_Handle_t“ is undefined
  • 原文地址：https://blog.csdn.net/weixin_42469070/article/details/127947559