java小游戏基础设计参考代码

package thread;

import java.awt.*;
import java.awt.event.*;

import javax.swing.*;

public class ShootGame extends JFrame implements Runnable...{
    
    JPanel panel1=new JPanel();
    JPanel panel2=new JPanel();
    
    MyCanvas mc=new MyCanvas();
    
    JButton btnStart=new JButton("开始");
    JButton btnStop=new JButton("停止");
    
    Image imgBack1,imgBack2,imgHawk,imgBullet;
    
    boolean started=false, fire=false;
    
    int backY1=0,backY2=mc.getHeight();
    int hawkX=160,hawkY=140,hawkWidth=50,hawkHeight=50;
    int StepLength=10;
    
    Thread timer;
    
    public static void main(String[] args) ...{
        new ShootGame();    
    }
    
    public ShootGame()...{
        this.setTitle("射击游戏");
        this.getContentPane().setLayout(new BorderLayout());
        
        this.getContentPane().add(panel1,"Center");
        this.getContentPane().add(panel2,"South");
        
        imgBack1=Toolkit.getDefaultToolkit().getImage("thread/background.png");
        imgBack2=Toolkit.getDefaultToolkit().getImage("thread/background.png");
        imgHawk=Toolkit.getDefaultToolkit().getImage("thread/hawk.png");
        imgBullet=Toolkit.getDefaultToolkit().getImage("thread/bullet.png");
        
        mc.setSize(400,320);
        panel1.add(mc);
        panel2.add(btnStart);
        panel2.add(btnStop);
        
        this.setSize(400,300);
        this.setResizable(false);
        this.setLocationRelativeTo(null);
        this.setVisible(true);
        this.pack();        
        
        //注册监听器
        
        this.addWindowListener(new WindowAdapter()...{
            public void windowClosing(WindowEvent e) ...{
                System.exit(0);
            }
        });
        
        btnStart.addActionListener(new ActionListener()...{
            public void actionPerformed(ActionEvent e) ...{                
                started=true;
                mc.requestFocus();
                start();            
            }            
        });
        
        btnStop.addActionListener(new ActionListener()...{
            public void actionPerformed(ActionEvent e) ...{
                started=false;                
            }            
        });
        
        mc.addKeyListener(new KeyAdapter()...{
            public void keyPressed(KeyEvent e) ...{                
                switch(e.getKeyCode())...{
                    case 37: //按左方向键
                        hawkX=hawkX-StepLength;
                        break;
                    case 100://按数字小键盘区数字4键
                        hawkX=hawkX-StepLength;
                        break;
                    case 38: //按上方向键
                        hawkY=hawkY-StepLength;
                        break;
                    case 104: //按数字小键盘区数字8键
                        hawkY=hawkY-StepLength;
                        break;
                    case 39://按右方向键
                        hawkX=hawkX+StepLength;
                        break;
                    case 102://按数字小键盘区数字6键
                        hawkX=hawkX+StepLength;
                        break;
                    case 40://按下方向键
                        hawkY=hawkY+StepLength;
                        break;
                    case 98://按数字小键盘区数字2键
                        hawkY=hawkY+StepLength;
                        break;
                    case 10://按回车键
                        fire=true;                        
                        break;        
                    case 101://按数字小键盘区数字5键
                        fire=true;                        
                        break;
                }
                    
                if(hawkX<0)...{ //碰左壁
                    hawkX=0;                    
                }
                
                if(hawkX>=mc.getWidth()-hawkWidth)...{ //碰右壁
                    hawkX=mc.getWidth()-hawkWidth;                    
                }
                
                if(hawkY<0)...{ //碰上壁
                    hawkY=0;                    
                }
                
                if(hawkY>=mc.getHeight()-hawkHeight)...{ //碰下壁
                    hawkY=mc.getHeight()-hawkHeight;                        
                }
                repaint();            
            }                
        });        
    }
    
    public void start() ...{
        timer=new Thread(this);  //创建线程    
        timer.start();  //启动线程        
    }    
    
    class MyCanvas extends Canvas...{
        public void paint(Graphics g)...{            
            g.drawImage(imgBack1,0,backY1,this.getWidth(),this.getHeight(),this);            
            g.drawImage(imgBack2,0,backY2,this.getWidth(),this.getHeight(),this);            
            g.drawImage(imgHawk,hawkX,hawkY,50,50,this);
            if(fire)...{
                for(int i=1;i<15;i++)...{
                    g.drawImage(imgBullet,hawkX,hawkY-20*i,10,10,this);
                    g.drawImage(imgBullet,hawkX+20,hawkY-20*i,10,10,this);
                    g.drawImage(imgBullet,hawkX+40,hawkY-20*i,10,10,this);
                    try ...{
                        Thread.sleep(1);
                    } catch (InterruptedException e) ...{                
                        e.printStackTrace();
                    }
                }                    
                fire=false;
            }                
        }
        
        public void update(Graphics g)...{
            paint(g);
        }
    }

    public void run() ...{
        while(started)...{
            try ...{
                Thread.sleep(30);
            } catch (InterruptedException e) ...{                
                e.printStackTrace();
            }
            
            if(backY1>-mc.getHeight())
                backY1=backY1-1;
            else
                backY1=0;
            
            backY2=backY1+mc.getHeight();
            
            mc.repaint();
        }                
    }
}