JAVA初级游戏项目（大鱼吃小鱼）

昨天在B站大神那边，学习了一个用Java变成的小游戏，大鱼吃小鱼。

给大家把游戏的想换代码给大家分享一下。

GameWin---游戏主窗口

package com.sxt;


import javax.swing.*;
import java.awt.*;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;

public class GameWin extends Jframe {
    
    //游戏默认状态
    static int state =0;

    //定义成员变量
    Image offScreenImage;
    //定义长和宽
    int width = 1180;
    int height =640;

    double random;
    //计数器
    int time=0;

    Bg bg=new Bg();

    //敌方鱼类
    Enamy enamy;

    //敌方BOSS类
    Enamy boss;
    //是否生成BOSS
    boolean isboss=false;

    //我方鱼类
    MyFish myFish=new MyFish();

    public void launch(){
        this.setVisible(true);//显示窗口
        this.setSize(width,height);//调用窗口尺寸大小
        this.setLocationRelativeTo(null);//窗口居中显示
        this.setResizable(false);//窗口大小不可调整
        this.setTitle("小鱼成长历险记"+"  "+"2021100100001");//定义窗口名称
        this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);//关闭窗口，自动停止运行

        //创建鼠标点击事件，点击为1，
        this.addMouseListener(new MouseAdapter() {
            @Override
            public void mouseClicked(MouseEvent e) {
                super.mouseClicked(e);
                if(e.getButton()==1&&state==0){
                    state=1;
                    repaint();
                }
                if(e.getButton()==1&&(state==2||state==3)){
                    reGame();
                    state=1;
                }
            }

        });

        //键盘移动
        this.addKeyListener(new KeyAdapter() {
            @Override//按压
            public void keyPressed(KeyEvent e) {
                super.keyPressed(e);
                //WASD
                if(e.getKeyCode()==87){
                    GameUtils.UP=true;
                }
                if(e.getKeyCode()==83){
                    GameUtils.DOWN=true;
                }
                if(e.getKeyCode()==65){
                    GameUtils.LEFT=true;
                }
                if(e.getKeyCode()==68){
                    GameUtils.RIGHT=true;
                }
                //监听键盘空格键（32），暂停游戏，在1和4之间切换
                if(e.getKeyCode()==32){
                    switch (state){
                        case 1:
                            state=4;
                            GameUtils.drawWord(getGraphics(),"游戏暂停!!!",Color.GREEN,120,350,500);
                            break;
                        case 4:
                            state=1;
                            break;
                    }
                }
            }
            @Override//抬起
            public void keyReleased(KeyEvent e){
                super.keyReleased(e);
                if(e.getKeyCode()==87){
                    GameUtils.UP=false;
                }
                if(e.getKeyCode()==83){
                    GameUtils.DOWN=false;
                }
                if(e.getKeyCode()==65){
                    GameUtils.LEFT=false;
                }
                if(e.getKeyCode()==68){
                    GameUtils.RIGHT=false;
                }
            }
        });

        //创建while循环，40毫秒，调用一次repaint
        while (true){
            repaint();
            time++;
            try {
                Thread.sleep(40);
            }catch (InterruptedException e){
                e.printStackTrace();
            }
        }
    }

    //创建画笔，绘画背景
    public void paint(Graphics g){
        //加载模式初始化对象
        offScreenImage =createImage(width,height);
        Graphics gImage=offScreenImage.getGraphics();
        bg.paintSelf(gImage,myFish.level);
        switch (state){
            case 0:
                break;
            case 1:
                myFish.paintSelf(gImage);
                logic();
                for(Enamy enamy:GameUtils.EnamyList){
                    enamy.painSelf(gImage);
                }
                //添加BOSS
                if(isboss){
                    boss.x=boss.x+boss.dir*boss.speed;
                    boss.painSelf(gImage);
                    //BOSS出现预警
                    if(boss.x<0){
                        gImage.setColor(Color.red);
                        gImage.fillRect(boss.x,boss.y,2400,boss.height%30);
                    }
                }
                break;
            case 2:
                for(Enamy enamy:GameUtils.EnamyList){
                    enamy.painSelf(gImage);
                }
                if(isboss){
                    boss.painSelf(gImage);
                }
                break;
            case 3:
                myFish.paintSelf(gImage);
                break;
            case 4:
                return;
            default:
        }
        g.drawImage(offScreenImage,0,0,null);
    }

    void logic(){
        //关卡难度
        if(GameUtils.count<5){
            GameUtils.level=0;
            myFish.level=1;
            //积分为15及15以下时，等级为1
        }else if(GameUtils.count<=15){
            GameUtils.level=1;
            //积分为50及50以下时，等级为2
            //鱼类等级为2
        }else if (GameUtils.count<=50){
            GameUtils.level=2;
            myFish.level=2;
            //积分为150及150以下时，等级为3
            //鱼类等级为3
        }else if(GameUtils.count<=150){
            GameUtils.level=3;
            myFish.level=3;
            //积分为300及300以下时，等级为4
            //鱼类等级为3
        }else if (GameUtils.count<=300){
            GameUtils.level=4;
            myFish.level=3;
            //当积分超过300，跳转界面3（胜利）
        }else if (GameUtils.count>300){
            state =3;
        }

        //定义一个随机函数
        random=Math.random();

        //通过难度等级，生成对应的鱼
        switch (GameUtils.level) {
            case 4:
                //90秒时，开始出现BOSS鱼类
                if(time%90==0){
                    if (random>0){
                        boss=new Enamy_Boss();
                        isboss=true;
                    }
                }
            case 3:
            case 2:
                //60秒时，开始出现3号鱼类
                if(time%60==0){
                    if(random>0.5){
                        enamy=new Enamy_3_L();
                    }else {
                        enamy=new Enamy_3_R();
                    }
                    GameUtils.EnamyList.add(enamy);
                }
            case 1:
                //30秒时，开始出现2号鱼类
                if(time%30==0){
                    if(random>0.5){
                        enamy=new Enamy_2_L();
                    }else {
                        enamy=new Enamy_2_R();
                    }
                    GameUtils.EnamyList.add(enamy);
                }
            case 0:
                //10秒时，开始添加1号鱼类
            if (time%10 == 0) {
                if (random > 0.5) {
                    enamy = new Enamy_1_L();
                } else {
                    enamy = new Enamy_1_R();
                }
                GameUtils.EnamyList.add(enamy);
            }
            break;
            default:
        }
        //鱼类移动方向
        for(Enamy enamy:GameUtils.EnamyList){
            enamy.x=enamy.x+enamy.dir*enamy.speed;

            if(isboss){
                //如果BOSS矩形和敌方鱼类矩形碰撞，敌方鱼类扭转到制定位置
                if(boss.getRec().intersects(enamy.getRec())){
                    enamy.x=-200;
                    enamy.y=-200;
                }
                //如果BOSS矩形和玩家鱼矩形碰撞，跳转到界面2（失败）
                if(boss.getRec().intersects(myFish.getRec())){
                    state=2;
                }
            }

        //我方鱼与敌方鱼碰撞检测
        if(myFish.getRec().intersects(enamy.getRec())){
            //如果我的鱼类等级，高于鱼类类型，吃掉鱼，获得积分，地方鱼类重新出现在指定位置
            if(myFish.level>=enamy.type){
                System.out.println("吃啦");
                System.out.println("获得"+GameUtils.count+"积分");
                enamy.x=-200;
                enamy.y=-200;
                GameUtils.count=GameUtils.count+enamy.count;
                }else {
                //不然，跳转到界面2（失败）
                state=2;
            }
            }
    }
    }

    //重新开始
    void reGame(){
        GameUtils.EnamyList.clear();
        time=0;
        myFish.level=1;
        GameUtils.count=0;
        myFish.x=700;
        myFish.y=500;
        myFish.width=50;
        myFish.height=50;
        boss=null;
        isboss=false;
    }

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

Bg---游戏背景图片

package com.sxt;

import java.awt.*;

public class Bg {
    void paintSelf(Graphics g,int fishlevel){
        g.drawImage(GameUtils.bgimg,0,0,null);
        switch (GameWin.state){
            case 0:
                GameUtils.drawWord(g,"开始",Color.red,80,450,350);
                break;
            case 1:
                GameUtils.drawWord(g,"积分"+GameUtils.count,Color.ORANGE,30,200,70);
                GameUtils.drawWord(g,"难度"+GameUtils.level,Color.ORANGE,30,600,70);
                GameUtils.drawWord(g,"等级"+fishlevel,Color.ORANGE,30,1000,70);
                break;
            case 2:
                GameUtils.drawWord(g,"积分"+GameUtils.count,Color.ORANGE,30,200,70);
                GameUtils.drawWord(g,"难度"+GameUtils.level,Color.ORANGE,30,600,70);
                GameUtils.drawWord(g,"等级"+fishlevel,Color.ORANGE,30,1000,70);
                GameUtils.drawWord(g,"失败",Color.red,200,350,350);
                break;
            case 3:
                GameUtils.drawWord(g,"积分"+GameUtils.count,Color.ORANGE,30,200,70);
                GameUtils.drawWord(g,"难度"+GameUtils.level,Color.ORANGE,30,600,70);
                GameUtils.drawWord(g,"等级"+fishlevel,Color.ORANGE,30,1000,70);
                GameUtils.drawWord(g,"胜利",Color.red,150,700,500);
                break;
            case 4:
                break;
                default:
        }
    }
}

GameUtil----工具类

package com.sxt;

import java.awt.*;
import java.util.ArrayList;
import java.util.List;

public class GameUtils {

    //方向控制
    static boolean UP=false;
    static boolean DOWN=false;
    static boolean LEFT=false;
    static boolean RIGHT=false;

    //分数
    static int count=0;

    //关卡等级
    static int level=0;

    //敌方鱼类集合
    public static ListEnamyList=new ArrayList<>();

    //定义固定的静态图片
    public static Image bgimg=Toolkit.getDefaultToolkit().createImage("img/sea.jpg");

    //敌方鱼类
    public static Image enemyl_img=Toolkit.getDefaultToolkit().createImage("img/enemyfish/fish1_l.jpg");
    public static Image enemyr_img=Toolkit.getDefaultToolkit().createImage("img/enemyfish/fish1_r.jpg");
    public static Image enemyl_2img=Toolkit.getDefaultToolkit().createImage("img/enemyfish/fish2_l.jpg");
    public static Image enemyr_2img=Toolkit.getDefaultToolkit().createImage("img/enemyfish/fish2_r.jpg");
    public static Image enemyl_3img=Toolkit.getDefaultToolkit().createImage("img/enemyfish/fish3_l.jpg");
    public static Image enemyr_3img=Toolkit.getDefaultToolkit().createImage("img/enemyfish/fish3_r.jpg");

    public static Image bossimg=Toolkit.getDefaultToolkit().createImage("img/enemyfish/boss.jpg");

    //我方鱼
    public static Image MyFishimg_L=Toolkit.getDefaultToolkit().createImage("img/myfish/myfish_left.jpg");
    public static Image MyFishimg_R=Toolkit.getDefaultToolkit().createImage("img/myfish/myfish_right.jpg");

    //绘制文字的工具类
    public static void drawWord(Graphics g,String str,Color color,int size,int x,int y){
        g.setColor(color);
        g.setFont(new Font("仿宋",Font.BOLD,size));
        g.drawString(str,x,y);
    }
}

MyFish----我的鱼

package com.sxt;

import java.awt.*;

public class MyFish {
    //图片
    Image img=GameUtils.MyFishimg_L;
    //坐标
    int x=700;
    int y=500;
    int width=94;
    int height=57;
    int speed=20;
    int level=1;

    //对我方鱼类的控制
    void logic(){
        if(GameUtils.UP){
            y=y-speed;
        }
        if(GameUtils.DOWN){
            y=y+speed;
        }
        if(GameUtils.LEFT){
            x=x-speed;
            img=GameUtils.MyFishimg_L;
        }
        if(GameUtils.RIGHT){
            x=x+speed;
            img=GameUtils.MyFishimg_R;
        }
    }
    //绘制自身的方法
    public void paintSelf(Graphics g){
        logic();
        g.drawImage(img,x,y,width+GameUtils.count,height+GameUtils.count,null);
    }
    //获取自身矩形，用于碰撞检测
    public Rectangle getRec(){
        return new Rectangle(x,y,width+GameUtils.count,height+GameUtils.count);
    }
}

Enamy----敌方鱼类

package com.sxt;

import java.awt.*;

public class Enamy {
    //定义图片
    Image img;
    //定义物体坐标
    int x;
    int y;
    int width;
    int height;
    //移动速度
    int speed;
    //方向
    int dir = 1;
    //类型
    int type;
    //分值
    int count;
    //绘制自身的方法
    public void painSelf(Graphics g){
        g.drawImage(img,x,y,width,height,null);
    }
    //获取自身矩形用于碰撞检测
    public Rectangle getRec(){
        return new Rectangle(x,y,width,height);
    }
}
//敌方鱼左类
class Enamy_1_L extends Enamy{
    Enamy_1_L(){
        this.x=-57;
        this.y=(int)(Math.random()*700+100);
        this.width=57;
        this.height=30;
        this.speed=5;
        this.count=1;
        this.type=1;
        this.img=GameUtils.enemyl_img;
    }
}
class Enamy_1_R extends Enamy_1_L{
    Enamy_1_R(){
        this.x=1400;
        dir=-1;
        this.img=GameUtils.enemyr_img;
    }
}
//定义第二类鱼
class Enamy_2_L extends Enamy{
    Enamy_2_L(){
        this.x=-100;
        this.y=(int)(Math.random()*700+100);
        this.width=69;
        this.height=37;
        this.speed=7;
        this.count=2;
        this.type=2;
        this.img=GameUtils.enemyl_2img;
    }
}
class Enamy_2_R extends Enamy_2_L{
    Enamy_2_R(){
        this.x=1400;
        dir=-1;
        this.img=GameUtils.enemyr_2img;
    }
}
//定义第三类鱼
class Enamy_3_L extends Enamy{
    Enamy_3_L(){
        this.x=-300;
        this.y=(int)(Math.random()*700+100);
        this.width=64;
        this.height=39;
        this.speed=13;
        this.count=4;
        this.type=4;
        this.img=GameUtils.enemyl_3img;
    }
    @Override//因为鱼体积过大，从新定义碰撞矩形
    public Rectangle getRec() {
        return new Rectangle(x+40,y+30,width+80,height+60);
    }
}
class Enamy_3_R extends Enamy_3_L{
    Enamy_3_R(){
        this.x=1400;
        dir=-1;
        this.img=GameUtils.enemyr_3img;
    }
}

//定义BOSS类
class Enamy_Boss extends Enamy{
    Enamy_Boss(){
        this.x=-1000;
        this.y=(int)(Math.random()*700+100);
        this.width=300;
        this.height=300;
        this.speed=20;
        this.type=10;
        this.count=0;
        this.img=GameUtils.bossimg;
    }
}

链接：https://pan.baidu.com/s/1XcoB1Ve5xrs1Le0rWlj1rw 
提取码：aabb