第一回发个小游戏，还请大家来看看

//   主操控程序 

package TankWar2;

import java.awt.Color;
import java.awt.Frame;
import java.awt.Graphics;
import java.awt.Image;
import java.awt.Rectangle;
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;
import java.util.Random;

public class TankWar extends Frame {
    public enum Direction {
        U, UR, R, RD, D, DL, L, LU, STOP
    };

    public static final int GAME_WIDTH = 900, GAME_HEIGHT = 700;

    public static final int GAME_SPEED = 44;//0 - 300,越小越快

    public static final int KEY_UP = KeyEvent.VK_UP;
    public static final int KEY_DOWN = KeyEvent.VK_DOWN;
    public static final int KEY_RIGHT = KeyEvent.VK_RIGHT;
    public static final int KEY_LEFT = KeyEvent.VK_LEFT;
    public static final int KEY_SPACE = KeyEvent.VK_SPACE;
    public static final int KEY_A = KeyEvent.VK_A;
    public static final int KEY_CONTROL = KeyEvent.VK_CONTROL;
    public static final int KEY_ENTER = KeyEvent.VK_ENTER;
    
    public static boolean uKey = false;
    public static boolean rKey = false;
    public static boolean dKey = false;
    public static boolean lKey = false;
    public static boolean controlKey = false;
    
    public static boolean pause = false;

    public static int timeCounter = 0;
    public static int timeCounter2 = 0;
    public static int superFireAmount = 0;//大招数量
    public static int playerFireRate = 5;//玩家攻击速率

    public static Tank myTank = new Tank(700, 70, 0, true, Direction.STOP, Direction.D);//生成玩家坦克

    public static List<Missile> missiles = new ArrayList<Missile>();//导弹数组
    public static List<Tank> tanks = new ArrayList<Tank>();//坦克数组
    public static List<Wall> walls = new ArrayList<Wall>();//墙数组
    public static List<Collision> collisions = new ArrayList<Collision>();//爆炸数组
    public static List<EatAbleThing> bloods = new ArrayList<EatAbleThing>();
    public static List<EatAbleThing> speedUps = new ArrayList<EatAbleThing>();
    public static List<EatAbleThing> fireRates = new ArrayList<EatAbleThing>();
    public static List<EatAbleThing> superFires = new ArrayList<EatAbleThing>();
    public static List<EatAbleThing> lifeAdds = new ArrayList<EatAbleThing>();

    public static Image image;
    public static Graphics g;

    public static int playerLifes = 0;
    public static int xChange = 2,xChange2 = 2;
    public static int yChange = 15,yChange2 = 15;
    
    public static int key6 = 2, key8 = 2, key10 = 700, key11 = 0, key14 = 0;//key10为敌军增援首次延时
    public static boolean key1 = false, key2 = false, key3 = false, key4 = false, key5 = false, key7 = false, key9 = false, key13 = false;// key1, key2, key3用来解决移除数组产生的问题

    public static Random random = new Random();

    public static void main(String[] args) {
        TankWar tw = new TankWar();
        tw.setLocation(10, 10);
        tw.setSize(GAME_WIDTH, GAME_HEIGHT);
        tw.setTitle("坦克大战");
        tw.setResizable(false);
        tw.addWindowListener(new WindowAdapter() {
            public void windowClosing(WindowEvent e) {
                System.exit(0);
            }
        });
        tw.setVisible(true);
        tw.start();
    }

    
    public void start() {
        new Thread(new KeyThread(this)).start();//按键线程
        new Thread(new MainThread(this)).start();//主线程   发现线程真的比较快，但不怎么清楚原理
    }

    //以下为画画面
    public void update(Graphics g) {
        if (image == null) image = this.createImage(GAME_WIDTH, GAME_HEIGHT);
        Graphics h = image.getGraphics();
        h.setColor(Color.WHITE);
        h.fillRect(0, 0, GAME_WIDTH, GAME_HEIGHT);

        myTank.draw(h);
        h.setColor(Color.RED);
        h.drawString("superfire amount : " + superFireAmount, 15, 50);
        h.drawString("fire rate : " + (6 - playerFireRate), 15, 80);
        h.drawString("speed : " + (Tank.TANK_XSPEED + myTank.speedUp), 15, 110);
        h.drawString("lifes : " + playerLifes, 15, 140);
        h.drawString("score : " + key11, 15,170 );
        h.setColor(Color.BLUE);
        h.drawString("It's me!",myTank.x - 5,myTank.y - 11 );
        h.setColor(Color.RED);
        h.drawString("next wave : " + timeCounter2 + "/" + key10, 15,200 );
        h.drawString("你能得多少分呢？", 15,230 );
        
        key14 += 2;
        if (key14 > 18) key14 = 0;
        if (key13) {
            h.drawString("you are going to die!!!", GAME_WIDTH / 2 - 100,70 + key14 );
        }
        
        if (key4) {
            h.drawString("生  命  燃  烧", GAME_WIDTH / 2 - 40 + xChange, yChange);
            xChange += key6;
            yChange += 2;
            if (xChange > 15)
                key6 = -2;
            if (xChange < 2)
                key6 = 2;
            if (yChange > 170) {
                key4 = false;
                xChange = 2;
                yChange = 15;
                key6 = 2;
            }
        }
        
        if (key9) {
            h.drawString("敌  军  增  援", GAME_WIDTH / 2 - 40 + xChange2, yChange2);
            xChange2 += key8;
            yChange2 += 2;
            if (xChange2 > 15)
                key8 = -2;
            if (xChange2 < 2)
                key8 = 2;
            if (yChange2 > 180) {
                key9 = false;
                xChange2 = 2;
                yChange2 = 15;
                key8 = 2;
            }
        }

        for (int i = 0; i < walls.size(); i++) {
            walls.get(i).draw(h);
        }

        for (int i = 0; i < tanks.size(); i++) {
            tanks.get(i).draw(h);
        }

        for (int i = 0; i < missiles.size(); i++) {
            missiles.get(i).draw(h);
        }

        for (int i = 0; i < bloods.size(); i++) {
            bloods.get(i).draw(h);
        }

        for (int i = 0; i < fireRates.size(); i++) {
            fireRates.get(i).draw(h);
        }

        for (int i = 0; i < superFires.size(); i++) {
            superFires.get(i).draw(h);
        }

        for (int i = 0; i < speedUps.size(); i++) {
            speedUps.get(i).draw(h);
        }

        for (int i = 0; i < lifeAdds.size(); i++) {
            lifeAdds.get(i).draw(h);
        }

        for (int i = 0; i < collisions.size(); i++) {
            collisions.get(i).draw(h);
        }

        g.drawImage(image, 0, 0, null);
    }