java第16章java-chapter16.rar

package chapter16.tankwar; import javax.swing.*; import java.awt.*; import java.awt.event.KeyEvent; import java.awt.event.KeyListener; import java.util.Vector; /** * @Auther: Tx * @Date: 2022/5/28 18:14 */ public class DrawTank extends JFrame { private MyPanel myPanel = null; public static void main(String[] args) { new DrawTank(); } public DrawTank() { myPanel = new MyPanel(); // 添加到窗口 this.add(myPanel); // 新建窗口 this.setSize(1000, 750); // 设置关闭 this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); // 显示 this.setVisible(true); // 监听键盘事件 this.addKeyListener(myPanel); } } //为了监听键盘事件，实现keyListener class MyPanel extends JPanel implements KeyListener { myTank myTank = null;//初始化自己的坦克 Vector<EnemyTank> enemyTanks = new Vector<>();//敌人坦克 int enemyTankNum = 3; public MyPanel() { myTank = new myTank(500, 500); for (int i = 0; i < enemyTankNum; i++) { EnemyTank enemyTank = new EnemyTank(100 * (i + 1), 100); enemyTank.setDirection(2); enemyTanks.add(enemyTank); } } @Override public void paint(Graphics g) { super.paint(g); drawTank(myTank.getX(), myTank.getY(), g, myTank.getDirection(),0); for (int i = 0; i < enemyTanks.size();i++) { EnemyTank enemyTank = enemyTanks.get(i); drawTank(enemyTank.getX(),enemyTank.getY(),g,enemyTank.getDirection(),1); } } public void drawTank(int x, int y, Graphics g, int direct, int type) { switch (type) { case 0: g.setColor(Color.cyan); break; case 1: g.setColor(Color.yellow); break; } //根据坦克方向，来绘制坦克 switch (direct) { case 0://绘制向上的坦克 g.fill3DRect(x, y, 10, 60, false);//画左边的轮子 g.fill3DRect(x + 30, y, 10, 60, false);//画左边的轮子 g.fill3DRect(x + 10, y + 15, 20, 30, false); g.fillOval(x + 10, y + 20, 20, 20);//坦克的盖子 g.drawLine(x + 20, y + 30, x + 20, y);//坦克的炮筒 repaint(); break; case 1://绘制向右的坦克 g.fill3DRect(x, y, 60, 10, false);//画上边的轮子 g.fill3DRect(x, y + 30, 60, 10, false);//画下边的轮子 g.fill3DRect(x + 15, y + 10, 30, 20, false);//坦克的中间部分 g.fillOval(x + 20, y + 10, 20, 20);//坦克的盖子 g.drawLine(x + 30, y + 20, x + 60, y + 20);//坦克的炮筒 break; case 2://绘制向下的坦克 g.fill3DRect(x, y, 10, 60, false);//画左边的轮子 g.fill3DRect(x + 30, y, 10, 60, false);//画左边的轮子 g.fill3DRect(x + 10, y + 15, 20, 30, false); g.fillOval(x + 10, y + 20, 20, 20);//坦克的盖子 g.drawLine(x + 20, y + 30, x + 20, y + 60);//坦克的炮筒 break; case 3: g.fill3DRect(x, y, 60, 10, false);//画上边的轮子 g.fill3DRect(x, y + 30, 60, 10, false);//画下边的轮子 g.fill3DRect(x + 15, y + 10, 30, 20, false);//坦克的中间部分 g.fillOval(x + 20, y + 10, 20, 20);//坦克的盖子 g.drawLine(x + 30, y + 20, x, y + 20);//坦克的炮筒 break; } } @Override public void keyTyped(KeyEvent e) { } @Override public void keyPressed(KeyEvent e) { if (e.getKeyCode() == KeyEvent.VK_W) { myTank.setDirection(0); //修改坦克的坐标 myTank.moveUp(); this.repaint(); } else if (e.getKeyCode() == KeyEvent.VK_D) { myTank.setDirection(1); myTank.moveRight(); this.repaint(); } else if (e.getKeyCode() == KeyEvent.VK_S) { myTank.setDirection(2); myTank.moveDown(); this.repaint(); } else if (e.getKeyCode() == KeyEvent.VK_A) { myTank.setDirection(3); myTank.moveLeft(); this.repaint(); } } @Override public void keyReleased(KeyEvent e) { } }