import java.awt.*;
import java.awt.event.*;
public class Main{
        public static Frame f =new Frame();
        public static void main(String[] agrs){
                f.setSize(500, 400);
                f.setLocation((Toolkit.getDefaultToolkit().getScreenSize().width-f.getSize().width)/2, (Toolkit.getDefaultToolkit().getScreenSize().height-f.getSize().height)/2);
                f.setTitle("swing简单的打字游戏");
                f.setBackground(Color.black);
                Mypanel mp =new Mypanel();
                f.add(mp);
                Thread t =new Thread(mp);
                t.start();
                f.addKeyListener(mp);
                mp.addKeyListener(mp);
                mp.addMouseListener(mp);
                
                f.setVisible(true);
                f.addWindowListener(new WindowAdapter(){
                        public void windowClosing(WindowEvent e){
                                System.exit(0);
                        }
                });
        }
}
class Mypanel extends Panel implements Runnable,KeyListener,MouseListener{
        private static final long serialVersionUID = 1L;
        int x[]=new int[20];
        int y[]=new int[20];
        char c[]=new char[20];
        
        int score=1000;
        int level=1;
        boolean flag=true;
        
        public Mypanel(){
                for(int i=0;i<20;i++){
                        x[i]=(int)(Math.random()*1020);
                        y[i]=(int)(Math.random()*768)-700;
                        c[i]=(char)(Math.random()*26+65);
                }
        }
        public void paint(Graphics g){
                g.setColor(Color.BLUE);
                g.setFont(new Font("宋体",Font.BOLD,30));

                if(flag==false){
                g.setColor(Color.GREEN);
                g.setFont(new Font("隶书",Font.BOLD,50));
                g.drawString("Over",Main.f.getSize().width/2,Main.f.getSize().height/2);
                }
                for(int i=0;i<20;i++){
                        g.drawString(c[i]+"",x[i],y[i]);
                }
        g.drawString("得分:"+score,20,50);
            
                g.drawString("等级:"+level,850,50);
                
                 
        }
        public void run(){
                while(flag){
                        for(int i=0;i<20;i++){
                                y[i]++;
                        if(y[i]>768){
                                y[i]=0;
                                x[i]=(int)(Math.random()*(Main.f.getSize().width));
                                c[i]=(char)(Math.random()*26+65);
                                score-=100;
                                if(score<=0){
                                        score=0; 
                                        flag=false;
                                        c=new char[20];
                                }
                        }
                        }
                        
                        try {
                                Thread.sleep(20-3*level);
                        } catch (InterruptedException e) {
                                e.printStackTrace();
                        }
                        this.repaint();
                }
        }

        public void mouseClicked(MouseEvent e) {
                System.out.println(e.getX());
                System.out.println(e.getY());
        }

        public void keyPressed(KeyEvent e) {
                int maxY=-1000;
                int index=-1;
                
                if(e.getKeyCode()>=e.VK_A&&e.getKeyCode()<=e.VK_Z){
                        for(int i=0;i<20;i++){
                                if(e.getKeyCode()==c[i]){
                                        if(y[i]>maxY){
                                                maxY=y[i];
                                                index=i;
                                        }
                                }
                        }
                        if(index!=-1){
                                y[index]=0;
                                x[index]=(int)(Math.random()*(Main.f.getSize().width));
                                c[index]=(char)(Math.random()*26+65);
                                      score +=50;
                                      if((score-500)/500>level){
                                              level++;
                                      }
                        }
                        else{
                                score-=100;
                                if(score<=0){
                                        score=0;
                                        flag=false;
                                        c=new char[20];
                                }
                                repaint();
                        }
                }
        }

        public void keyReleased(KeyEvent arg0) {
                
        }

        public void keyTyped(KeyEvent arg0) {
                
        }

        public void mouseEntered(MouseEvent arg0) {
                
        }

        public void mouseExited(MouseEvent arg0) {
                
        }
        public void mousePressed(MouseEvent arg0) {
                
        }
        public void mouseReleased(MouseEvent arg0) {
                
        }
}