目录
前言
该游戏可支持本地两人游戏
Player1采用W和S键控制球拍移动
Player2采用UP和DOWN键控制球拍移动
进程开始后按Space键即可开始游戏
在任意玩家得分后游戏会暂停，按下Space键后即可继续游戏
在达到设定的Score-to-win便会弹出GameOver窗口
代码实现
GameOverPanel类
import java.awt.Graphics;
import java.awt.image.BufferedImage;
import java.io.File;
import javax.imageio.ImageIO;
import javax.swing.JPanel;
import javax.swing.*;
import java.awt.*;
class GameOverPanel extends JPanel {
private static final long serialVersionUID = 1L;
private BufferedImage image;
public GameOverPanel(int player1Score, int player2Score) {
this.player1Score = player1Score;
this.player2Score = player2Score;
try {
// Load the image file
image = ImageIO.read(new File("C:/Users/timberman/Desktop/JianRan.jpg"));
} catch (Exception e) {
e.printStackTrace();
}
}
public void paintComponent(Graphics g) {
super.paintComponent(g);
// Draw the image in the center of the panel
int x = (getWidth() - image.getWidth()) / 2;
int y = (getHeight() - image.getHeight()) / 2;
g.drawImage(image, x, y, null);
}
private int player1Score;
private int player2Score;
public void paint(Graphics g) {
super.paint(g);
Font font = new Font("Arial", Font.BOLD, 20);
g.setFont(font);
g.drawString("Game Over", 30, 30);
if(player1Score>player2Score){
g.drawString("player1 Win",30,50);
}
else{
g.drawString("player2 Win",30,50);
}
}
}
PingPong类
import java.awt.*;
import java.awt.font.FontRenderContext;
import java.awt.image.BufferedImage;
import java.io.File;
import java.util.Set;
import java.util.HashSet;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import java.util.Random;
import javax.imageio.ImageIO;
import javax.swing.*;
public class PingPong extends JPanel implements KeyListener, Runnable {
private static final long serialVersionUID = 1L;
private Set<Integer> keysPressed = new HashSet<>();
private int paddle1Y = 0;
private int paddle2Y = 0;
private int ballXDirection = 1;
private int ballYDirection = -1;
private int player1Score = 0;
private int player2Score = 0;
private boolean gameRunning = true;
private final int BALL_SIZE = 20;
private final int PADDLE_WIDTH = 10;
private final int PADDLE_HEIGHT = 100;
private final int PADDLE_SPEED = 10;
private final int SCORE_TO_WIN = 11;
private final int FRAME_WIDTH = 600;
private final int FRAME_HEIGHT = 600;
private final int PADDING = 10;
private final int BALL_SPEED = 1;
private final int DELAY = 10;
private int ballX = FRAME_WIDTH / 2 - BALL_SIZE / 2;;
private int ballY = FRAME_HEIGHT / 2 - BALL_SIZE / 2;
public boolean startScreen=true;
public PingPong() {
JFrame frame = new JFrame("Ping Pong");
frame.setSize(FRAME_WIDTH+15, FRAME_HEIGHT+35);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.addKeyListener(this);
frame.add(this);
frame.setVisible(true);
frame.setLocation(500,100);
new Thread(this).start();
}
public void paint(Graphics g) {
super.paint(g);
g.setColor(Color.BLACK);
g.fillRect(0, 0, FRAME_WIDTH, FRAME_HEIGHT);
if (startScreen) {
// Draw start screen message
g.setColor(Color.white);
Font font = new Font("Arial", Font.BOLD, 36);
g.setFont(font);
g.drawString("Press SPACE to start", FRAME_WIDTH/2 -190, FRAME_HEIGHT/2);
}
else{
g.setColor(Color.WHITE);
g.fillRect(PADDING, paddle1Y, PADDLE_WIDTH, PADDLE_HEIGHT);
g.fillRect(FRAME_WIDTH - PADDING - PADDLE_WIDTH, paddle2Y, PADDLE_WIDTH, PADDLE_HEIGHT);
g.fillOval(ballX, ballY, BALL_SIZE, BALL_SIZE);
Font font = new Font("Arial", Font.BOLD, 20);
g.setFont(font);
g.drawString("Player 1: " + player1Score, PADDING, PADDING+10);
g.drawString("Player 2: " + player2Score, FRAME_WIDTH - PADDING - 100, PADDING+10);
}
}
public void run() {
while (gameRunning) {
if (startScreen) {
// Draw start screen message
Graphics g = getGraphics();
g.setColor(Color.white);
g.drawString("Press SPACE to start", FRAME_WIDTH/2 - 70, FRAME_HEIGHT/2);
g.dispose();
// Wait for spacebar to be pressed
while (startScreen) {
try {
Thread.sleep(10);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
moveBall();
movePaddles();
checkCollisions();
checkWin();
repaint();
try {
Thread.sleep(DELAY);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
private void moveBall() {
ballX += ballXDirection * BALL_SPEED;
ballY += ballYDirection * BALL_SPEED;
}
@Override
public void keyTyped(KeyEvent e) {
}
public void keyPressed(KeyEvent e) {
int keyCode = e.getKeyCode();
keysPressed.add(keyCode);
if (keysPressed.contains(KeyEvent.VK_SPACE)) {
startScreen = false;
}
}
public void keyReleased(KeyEvent e) {
int keyCode = e.getKeyCode();
keysPressed.remove(keyCode);
}
private void movePaddles() {
if (keysPressed.contains(KeyEvent.VK_W)) {
paddle1Y -= PADDLE_SPEED;
}
if (keysPressed.contains(KeyEvent.VK_S)) {
paddle1Y += PADDLE_SPEED;
}
if (keysPressed.contains(KeyEvent.VK_UP)) {
paddle2Y -= PADDLE_SPEED;
}
if (keysPressed.contains(KeyEvent.VK_DOWN)) {
paddle2Y += PADDLE_SPEED;
}
// Clamp paddle positions to screen bounds
paddle1Y = Math.max(PADDING, Math.min(paddle1Y, FRAME_HEIGHT - PADDLE_HEIGHT - PADDING));
paddle2Y = Math.max(PADDING, Math.min(paddle2Y, FRAME_HEIGHT - PADDLE_HEIGHT - PADDING));
}
private void checkCollisions() {
if (ballY <= 0 || ballY >= FRAME_HEIGHT - BALL_SIZE) {
ballYDirection *= -1;
}
if (ballX <= PADDING + PADDLE_WIDTH && ballY >= paddle1Y && ballY <= paddle1Y + PADDLE_HEIGHT) {
ballXDirection *= -1;
ballXDirection += ballXDirection > 0 ? 1 : -1;
ballYDirection += ballYDirection > 0 ? 1 : -1;
}
if (ballX >= FRAME_WIDTH - PADDING - PADDLE_WIDTH - BALL_SIZE && ballY >= paddle2Y && ballY <= paddle2Y + PADDLE_HEIGHT) {
ballXDirection *= -1;
ballXDirection += ballXDirection > 0 ? 1 : -1;
ballYDirection += ballYDirection > 0 ? 1 : -1;
}
if (ballX <= 0) {
player2Score++;
resetBall();
gameRunning = false;
}
if (ballX >= FRAME_WIDTH - BALL_SIZE) {
player1Score++;
resetBall();
gameRunning = false;
}
if (player1Score >= SCORE_TO_WIN || player2Score >= SCORE_TO_WIN) {
gameRunning = false;
}
if (!gameRunning) {
// Draw scores
Graphics g = getGraphics();
g.setColor(Color.white);
Font font = new Font("Arial", Font.BOLD, 36);
g.setFont(font);
String scoreString = "Player 1: " + player1Score + " Player 2: " + player2Score;
int stringWidth = g.getFontMetrics().stringWidth(scoreString);
g.drawString(scoreString, FRAME_WIDTH/2 - stringWidth/2, FRAME_HEIGHT/2);
g.drawString("Press SPACE to continue",FRAME_WIDTH/2 - stringWidth/2-10, FRAME_HEIGHT/2-100);
// Wait for space bar to be pressed
while (!keysPressed.contains(KeyEvent.VK_SPACE)) {
try {
Thread.sleep(10);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
// Reset game and continue
keysPressed.remove(KeyEvent.VK_SPACE);
gameRunning = true;
}
}
private void checkWin() {
if (player1Score >= SCORE_TO_WIN || player2Score >= SCORE_TO_WIN) {
gameRunning = false;
JFrame frame = new JFrame("Game Over");
frame.setSize(300, 300);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.add(new GameOverPanel(player1Score, player2Score));
frame.setVisible(true);
frame.setLocation(400,300);
}
}
private void resetBall() {
ballX = FRAME_WIDTH / 2 - BALL_SIZE / 2;
ballY = FRAME_HEIGHT / 2 - BALL_SIZE / 2;
ballXDirection = new Random().nextInt(2) == 0 ? -1 : 1;
ballYDirection = new Random().nextInt(2) == 0 ? -1 : 1;
}
public static void main(String[] args) {
new PingPong();
}
}实机演示
