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.List;
import java.util.ArrayList;


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, true, this);
    Blood b = new Blood();
    //Tank enemyTank = new Tank(100, 100, false, this);
    List<Missile> missiles = new ArrayList<Missile>();
    List<Explode> explodes = new ArrayList<Explode>();
    List<Tank> tanks = new ArrayList<Tank>();

    //Wall w1 = new Wall(250,250,250,10,this);
    Wall w1 = new Wall(300,300,300,50,this);


    //这是一张虚拟图片
    Image offScreenImage = null;

    //paint这个方法不需要被调用，一旦要被重画的时会被自动 调用
    public void paint(Graphics g) {
        //显示出容器中装了多少炮弹
        g.drawString("missiles count: " + missiles.size(), 10, 50);
        //显示有多少个爆炸
        g.drawString("explodes count: " + explodes.size(), 10, 70);
        //坦克剩余的数量
        g.drawString("tanks count: " + tanks.size(), 10, 90);

        g.drawString("blood: " + myTank.getLife(), 10, 110);
        //将容器中的爆炸逐个画出来
        for (int i = 0; i < explodes.size(); i++) {
            Explode e = explodes.get(i);
            e.draw(g);
        }
        w1.draw(g);

        myTank.draw(g);
        b.draw(g);
        myTank.eat(b);
        myTank.collidesWithWall(w1);
        myTank.collidesWithTanks(tanks);

        for (int i = 0; i < tanks.size(); i++) {
            tanks.get(i).draw(g);
            tanks.get(i).collidesWithWall(w1);
            tanks.get(i).collidesWithTanks(tanks);
        }
        //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.hitTanks(tanks);
            m.hitTank(myTank);
            m.hitWall(w1);
            //m.hitWall(w2);

            m.draw(g);

        }
        for (int i = 0; i < tanks.size(); i++) {
            Tank ta = tanks.get(i);
            if (!ta.isLive()) {
                tanks.remove(ta);
            }
        }
        if(tanks.size()==0){
            this.launchFrame();
        }
    }

    public void update(Graphics g) {
        if (offScreenImage == null) {
            offScreenImage = this.createImage(GAME_WIDTH,
                    GAME_HEIGHT);
        }
        //拿到这个图片的画笔
        Graphics gOffScreen = offScreenImage.getGraphics();
        Color c = gOffScreen.getColor();
        gOffScreen.setColor(Color.MAGENTA);
        gOffScreen.fillRect(0, 0, GAME_WIDTH, GAME_HEIGHT);
        gOffScreen.setColor(c);
        print(gOffScreen);
        g.drawImage(offScreenImage, 0, 0, null);
    }

    public void launchFrame() {
        for (int i = 0; i < 10; i++) {
            tanks.add(new Tank(50 + 40 * (i + 1), 50, false, this));
            tanks.get(i).collidesWithWall(w1);
        }
        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.CYAN);
        this.addKeyListener(new KeyMonitor());
        setVisible(true);
        new Thread(new PaintThread()).start();
    }

    public static void main(String[] args) {
        TankClient tc = new TankClient();
        tc.launchFrame();
    }

    private class PaintThread implements Runnable {
        public void run() {
            while (true) {
                repaint();
                try {
                    Thread.sleep(50);
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
            }
        }
    }

    private class KeyMonitor extends KeyAdapter {
        public void keyPressed(KeyEvent e) {
            myTank.KyePressed(e);
        }

        public void keyReleased(KeyEvent e) {
            myTank.kyeReleased(e);myTank.judgmentlife(e);
        }
    }
}