package V14;

import java.awt.*;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.util.ArrayList;
import java.util.List;

public class TankClient extends Frame {
    public static final int GAME_WIDTH = 800;
    public static final int GAME_HEIGHT = 600;
    Tank myTank =new Tank(50,50,this);
    List<Missile> missiles = new ArrayList<Missile>();
    Image offScreenImage = null;
    public void paint(Graphics g) {
        //看出容器中装了多少炮弹
        g.drawString("missiles count: " + missiles.size(), 10, 50);
        //将容器中的炮弹逐个画出来
        for(int i = 0; i < missiles.size(); i++) {
            Missile m = missiles.get(i);
            m.draw(g);
        }
        myTank.draw(g);


    }
    public void update(Graphics g) {
        if(offScreenImage == null) {
            offScreenImage = this.createImage(GAME_WIDTH, GAME_HEIGHT);
        }
        Graphics gOffScreen = offScreenImage.getGraphics();
        Color c = gOffScreen.getColor();
        gOffScreen.setColor(Color.GREEN);
        gOffScreen.fillRect(0, 0, GAME_WIDTH, GAME_HEIGHT);
        gOffScreen.setColor(c);
        print(gOffScreen);
        g.drawImage(offScreenImage, 0, 0, null);
    }
    public void launchFrame(){
        this.setLocation(300,50);
        this.setSize(GAME_WIDTH,GAME_HEIGHT);
        this.setTitle("TankWar");
        addWindowListener(new WindowAdapter() {
            public void windowClosing(WindowEvent e) {
                System.exit(0);
            }
        });
        this.setResizable(false);
        this.setBackground(Color.GREEN);
        this.setVisible(true);
        this.addKeyListener(new KeyMonitor());
        new Thread(new PaintThread()).start();

    }
    public static void main(String[] args) {
        TankClient tc=new TankClient();
        tc.launchFrame();
    }
    private class PaintThread implements Runnable {
        @SuppressWarnings("InfiniteLoopStatement")
        public void run() {
            while (true){
                repaint();
                try {
                    Thread.sleep(100);
                } catch (InterruptedException e) { e.printStackTrace();
                }
            }
        }
    }
    private class KeyMonitor extends KeyAdapter{
        @Override
        public void keyPressed(KeyEvent e) {
            myTank.keyPressed(e);
        }
        public void keyReleased(KeyEvent e) {
            myTank.kyeReleased(e);
        }

    }
}