study-tank/src/main/java/com/study/tank/TankFrame.java

package com.study.tank;

import com.study.tank.factory.*;

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;

/**
 * @Description:
 * @Auther: xiaoshengjie
 * @Date: 2022/10/22/上午9:14
 */
public class TankFrame extends Frame {
    public static final int GAME_WIDTH = Integer.parseInt((String) PropertyMgr.get("gameWidth"));
    public static final int GAME_HEIGHT = Integer.parseInt((String) PropertyMgr.get("gameHeight"));
    public ArrayList<BaseTank> tanks = new ArrayList<BaseTank>();
    public Tank myTank = new Tank(150, 150, Dir.DOWN, Group.GOOD, this);
    public ArrayList<BaseBullet> bullets = new ArrayList<BaseBullet>();
    public ArrayList<BaseExplode> explodes = new ArrayList<BaseExplode>();
    public GameFactory gf = new DefaultFactory();

    public TankFrame() {
        //设置窗口大小
        this.setSize(GAME_WIDTH, GAME_HEIGHT);
        this.setResizable(false);//不可改变窗口大小
        this.setTitle("Tank War");//设置标题
        this.setVisible(true);//设置窗口可见
        this.addKeyListener(new MyKeyListener());
        //窗口关闭系统停止运行
        this.addWindowListener(new WindowAdapter() {
            @Override
            public void windowClosing(WindowEvent e) {
                System.exit(0);
            }
        });

    }

    Image offScreenImage = null;

    @Override
    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.BLACK);
        gOffScreen.fillRect(0, 0, GAME_WIDTH, GAME_HEIGHT);
        gOffScreen.setColor(c);
        paint(gOffScreen);
        g.drawImage(offScreenImage, 0, 0, null);
    }

    @Override
    public void paint(Graphics g) {
        Color c = g.getColor();
        g.setColor(Color.BLUE);
        g.drawString("子弹的数量：" + bullets.size(), 5, 40);
        g.drawString("敌人的数量：" + tanks.size(), 5, 60);
        g.setColor(c);
        myTank.paint(g);
        for (int i = 0; i < tanks.size(); i++) {
            tanks.get(i).paint(g);
        }
        for (int i = 0; i < bullets.size(); i++) {
            bullets.get(i).paint(g);
        }
        for (int i = 0; i < bullets.size(); i++) {
            for (int j = 0; j < tanks.size(); j++) {
                bullets.get(i).collideWithTank(tanks.get(j));
            }
        }
        for (int i = 0; i < explodes.size(); i++) {
            explodes.get(i).paint(g);
        }
    }

    /**
     * 按键监听类
     */
    class MyKeyListener extends KeyAdapter {
        boolean bL = false;
        boolean bR = false;
        boolean bU = false;
        boolean bD = false;

        @Override
        public void keyPressed(KeyEvent e) {
            int key = e.getKeyCode();
            switch (key) {
                case KeyEvent.VK_A:
                    bL = true;
                    break;
                case KeyEvent.VK_D:
                    bR = true;
                    break;
                case KeyEvent.VK_W:
                    bU = true;
                    break;
                case KeyEvent.VK_S:
                    bD = true;
                    break;
            }
            setDirMethod();
        }

        @Override
        public void keyReleased(KeyEvent e) {
            super.keyReleased(e);
            int key = e.getKeyCode();
            System.out.println("弹起：" + key);
            switch (key) {
                case KeyEvent.VK_A:
                    bL = false;
                    break;
                case KeyEvent.VK_D:
                    bR = false;
                    break;
                case KeyEvent.VK_W:
                    bU = false;
                    break;
                case KeyEvent.VK_S:
                    bD = false;
                    break;
                case KeyEvent.VK_SPACE:
                    myTank.fire();
                    break;
            }
            setDirMethod();
        }

        public void setDirMethod() {
            if (!bD && !bU && !bR && !bL) {
                myTank.setMoving(false);
            } else {
                myTank.setMoving(true);
            }
            if (bL) myTank.setDir(Dir.LEFT);
            if (bR) myTank.setDir(Dir.RIGHT);
            if (bU) myTank.setDir(Dir.UP);
            if (bD) myTank.setDir(Dir.DOWN);
        }

    }

}