坦克大战第一节——画出自己的坦克（新手篇）

package tankgames;

import java.awt.*;

//创建坦克类
public class Tank {
    int x,y,w,h;
    int speed;
    int direct;
    Color c1,c2,c3;
    
    public Tank(){
        x=230;
        y=300;
        w=5;
        h=60;
        speed=10;
        direct=0;
    
    }

    public Tank(int x, int y, int w, int h, int speed, int direct) {
        super();
        this.x = x;
        this.y = y;
        this.w = w;
        this.h = h;
        this.speed = speed;
        this.direct = direct;
    }
}


//创建我的坦克子类
class MyTank extends Tank{
    //创建颜色对象，并设置颜色
    public MyTank(){
        this.c1 = new Color(128,128,128);
        this.c2 = new Color(0,255,0);
        this.c3 = new Color(0,0,255);
    }
    
    public MyTank(int x, int y, int w, int h, int speed, int direct) {
        super(x, y, w, h, speed, direct);
        this.c1 = new Color(128,128,128);
        this.c2 = new Color(0,255,0);
        this.c3 = new Color(0,0,255);
    }
}

package tankgames;

import java.awt.*;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import javax.swing.*;

public class TankGame extends JFrame{
    private static final long serialVersionUID = 1L;
    
    MyPanel mp;

    public static void main(String[] args) {
        new TankGame().setVisible(true);

    }
    
    public TankGame(){
        this.setTitle("坦克大战");
        this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        this.setResizable(false);
        this.setBounds(100, 100, 600, 500);
        
        //创建我的面板对象，并添加到我的窗体里面
        mp = new MyPanel();
        this.getContentPane().add(mp);
        
        //注册键盘事件监听
        this.addKeyListener(mp);
    }

}

//创建我的面板子类
class MyPanel extends JPanel implements KeyListener{
    MyTank myTank;
    private static final long serialVersionUID = 1L;
    
    public MyPanel(){
        this.setLayout(null);
        myTank = new MyTank();
    }
    
    //面板容器的设置和组件在面板容器里显示
    public void paint(Graphics g){
        super.paint(g);
        g.setColor(new Color(255,255,221));
        g.fill3DRect(0, 0, 500, 400, false);
        drawTank(myTank,g);
    }
    
    //画坦克
    public void drawTank(Tank t,Graphics g){
        int x = t.x, y = t.y, w = t.w, h = t.h;
        //画出向上的坦克
        if(t.direct == 0){
            Graphics2D g2d = (Graphics2D)g;
            g.setColor(t.c1);
            g.fill3DRect(x, y, w, h, false);
            g.fill3DRect(x+7*w, y, w, h, false);
            g.setColor(t.c2);
            g.fill3DRect(x+w, y+2*w, 6*w, 8*w, false);
            g.fillOval(x+2*w, y+4*w, 4*w, 4*w);
            g2d.setColor(t.c3);
            g2d.setStroke(new BasicStroke(5.0f));
            g2d.drawLine(x+4*w, y, x+4*w, y+6*w);
        }
        //画出向下的坦克
        else if(t.direct == 2){
            Graphics2D g2d = (Graphics2D)g;
            g.setColor(t.c1);
            g.fill3DRect(x, y, w, h, false);
            g.fill3DRect(x+7*w, y, w, h, false);
            g.setColor(t.c2);
            g.fill3DRect(x+w, y+2*w, 6*w, 8*w, false);
            g.fillOval(x+2*w, y+4*w, 4*w, 4*w);
            g2d.setColor(t.c3);
            g2d.setStroke(new BasicStroke(5.0f));
            g2d.drawLine(x+4*w, y+6*w, x+4*w, y+12*w);
        }
        //画出向左的坦克
        else if(t.direct == 3){
            Graphics2D g2d = (Graphics2D)g;
            g.setColor(t.c1);
            g.fill3DRect(x, y, h, w, false);
            g.fill3DRect(x, y+7*w, h, w, false);
            g.setColor(t.c2);
            g.fill3DRect(x+2*w, y+w, 8*w, 6*w, false);
            g.fillOval(x+4*w, y+2*w, 4*w, 4*w);
            g2d.setColor(t.c3);
            g2d.setStroke(new BasicStroke(5.0f));
            g2d.drawLine(x, y+4*w, x+6*w, y+4*w);
        }
        //画出向右的坦克
        else if(t.direct ==1){
            Graphics2D g2d = (Graphics2D)g;
            g.setColor(t.c1);
            g.fill3DRect(x, y, h, w, false);
            g.fill3DRect(x, y+7*w, h, w, false);
            g.setColor(t.c2);
            g.fill3DRect(x+2*w, y+w, 8*w, 6*w, false);
            g.fillOval(x+4*w, y+2*w, 4*w, 4*w);
            g2d.setColor(t.c3);
            g2d.setStroke(new BasicStroke(5.0f));
            g2d.drawLine(x+6*w, y+4*w, x+12*w, y+4*w);
        }
    }

    @Override
    public void keyTyped(KeyEvent e) {
        
    }
    //我的坦克移动
    @Override
    public void keyPressed(KeyEvent e) {
        //向左移动
        if(e.getKeyCode() == KeyEvent.VK_LEFT || e.getKeyCode() == KeyEvent.VK_A){
            myTank.x -= myTank.speed;
            myTank.direct = 3;
        }
        //向右移动
        else if(e.getKeyCode() == KeyEvent.VK_RIGHT || e.getKeyCode() == KeyEvent.VK_D){
            myTank.x += myTank.speed;
            myTank.direct = 1;
        }
        //向上移动
        else if(e.getKeyCode() == KeyEvent.VK_UP || e.getKeyCode() == KeyEvent.VK_W){
            myTank.y -= myTank.speed;
            myTank.direct =0;
        }
        //向下移动
        else if(e.getKeyCode() == KeyEvent.VK_DOWN || e.getKeyCode() == KeyEvent.VK_S){
            myTank.y += myTank.speed;
            myTank.direct = 2;
        }
        //关闭游戏
        else if(e.getKeyCode() == KeyEvent.VK_ESCAPE){
            System.exit(0);
        }
        //刷新图形
        this.repaint();
    }

    @Override
    public void keyReleased(KeyEvent e) {
        
    }

}