制作冰火人小游戏代码Java

以下是一个简单的冰火人小游戏Java代码示例，包含基本的游戏逻辑和GUI界面：

import java.awt.Color;
import java.awt.Graphics;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import javax.swing.JFrame;
import javax.swing.JPanel;

public class IceFireGame extends JPanel implements KeyListener {
  private final int WIDTH = 500; // 窗口宽度
  private final int HEIGHT = 500; // 窗口高度
  private final int PLAYER_SIZE = 30; // 玩家大小
  private final int PLAYER_SPEED = 5; // 玩家速度
  private final int ICE_SIZE = 20; // 冰块大小
  private final int FIRE_SIZE = 20; // 火球大小
  private final int FIRE_SPEED = 10; // 火球速度
  private int playerX = WIDTH / 2 - PLAYER_SIZE / 2; // 玩家初始位置
  private int playerY = HEIGHT / 2 - PLAYER_SIZE / 2;
  private boolean upPressed, downPressed, leftPressed, rightPressed; // 方向键状态
  private boolean gameOver = false; // 游戏结束标志
  private int score = 0; // 得分
  private int iceX, iceY; // 冰块位置
  private int fireX, fireY; // 火球位置

  public IceFireGame() {
    JFrame frame = new JFrame("Ice Fire Game");
    frame.setSize(WIDTH, HEIGHT);
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    frame.setResizable(false);
    frame.addKeyListener(this);
    frame.add(this);
    frame.setVisible(true);
    startGame();
  }

  private void startGame() {
    iceX = (int) (Math.random() * (WIDTH - ICE_SIZE)); // 随机生成冰块位置
    iceY = (int) (Math.random() * (HEIGHT - ICE_SIZE));
    fireX = (int) (Math.random() * (WIDTH - FIRE_SIZE)); // 随机生成火球位置
    fireY = (int) (Math.random() * (HEIGHT - FIRE_SIZE));
    while (!gameOver) { // 游戏循环
      try {
        Thread.sleep(50); // 控制游戏速度
      } catch (InterruptedException e) {
        e.printStackTrace();
      }
      movePlayer();
      moveFire();
      checkCollision();
      repaint(); // 刷新画面
    }
  }

  private void movePlayer() {
    if (upPressed && playerY > 0) {
      playerY -= PLAYER_SPEED;
    }
    if (downPressed && playerY < HEIGHT - PLAYER_SIZE) {
      playerY += PLAYER_SPEED;
    }
    if (leftPressed && playerX > 0) {
      playerX -= PLAYER_SPEED;
    }
    if (rightPressed && playerX < WIDTH - PLAYER_SIZE) {
      playerX += PLAYER_SPEED;
    }
  }

  private void moveFire() {
    if (fireY < HEIGHT) {
      fireY += FIRE_SPEED;
    } else {
      fireX = (int) (Math.random() * (WIDTH - FIRE_SIZE)); // 火球到达底部，重新随机生成位置
      fireY = 0;
    }
  }

  private void checkCollision() {
    if (playerX + PLAYER_SIZE > iceX && playerX < iceX + ICE_SIZE && playerY + PLAYER_SIZE > iceY
        && playerY < iceY + ICE_SIZE) { // 玩家与冰块碰撞
      score++;
      iceX = (int) (Math.random() * (WIDTH - ICE_SIZE)); // 冰块消失，重新随机生成位置
      iceY = (int) (Math.random() * (HEIGHT - ICE_SIZE));
    }
    if (playerX + PLAYER_SIZE > fireX && playerX < fireX + FIRE_SIZE && playerY + PLAYER_SIZE > fireY
        && playerY < fireY + FIRE_SIZE) { // 玩家与火球碰撞
      gameOver = true;
    }
  }

  @Override
  public void paintComponent(Graphics g) {
    super.paintComponent(g);
    g.setColor(Color.WHITE);
    g.fillRect(0, 0, WIDTH, HEIGHT);
    g.setColor(Color.BLUE);
    g.fillRect(playerX, playerY, PLAYER_SIZE, PLAYER_SIZE);
    g.setColor(Color.CYAN);
    g.fillRect(iceX, iceY, ICE_SIZE, ICE_SIZE);
    g.setColor(Color.RED);
    g.fillRect(fireX, fireY, FIRE_SIZE, FIRE_SIZE);
    g.setColor(Color.BLACK);
    g.drawString("Score: " + score, 10, 20);
    if (gameOver) {
      g.drawString("Game Over!", WIDTH / 2 - 30, HEIGHT / 2);
    }
  }

  @Override
  public void keyPressed(KeyEvent e) {
    if (e.getKeyCode() == KeyEvent.VK_UP) {
      upPressed = true;
    }
    if (e.getKeyCode() == KeyEvent.VK_DOWN) {
      downPressed = true;
    }
    if (e.getKeyCode() == KeyEvent.VK_LEFT) {
      leftPressed = true;
    }
    if (e.getKeyCode() == KeyEvent.VK_RIGHT) {
      rightPressed = true;
    }
  }

  @Override
  public void keyReleased(KeyEvent e) {
    if (e.getKeyCode() == KeyEvent.VK_UP) {
      upPressed = false;
    }
    if (e.getKeyCode() == KeyEvent.VK_DOWN) {
      downPressed = false;
    }
    if (e.getKeyCode() == KeyEvent.VK_LEFT) {
      leftPressed = false;
    }
    if (e.getKeyCode() == KeyEvent.VK_RIGHT) {
      rightPressed = false;
    }
  }

  @Override
  public void keyTyped(KeyEvent e) {
  }

  public static void main(String[] args) {
    new IceFireGame();
  }
}

该游戏使用 Java Swing 框架实现，包含一个 IceFireGame 类，继承自 JPanel，并实现了 KeyListener 接口用于监听方向键的状态变化。在构造函数中，创建了一个 JFrame 窗口，并将当前 JPanel 添加到其中，同时注册了 KeyListener 监听器。startGame() 方法中包含了游戏的主循环，每次循环控制玩家、火球的移动和碰撞检测，并通过 repaint() 方法刷新画面。paintComponent() 方法用于绘制游戏界面，包括玩家、冰块、火球和得分等元素。在 keyPressed() 和 keyReleased() 方法中，根据不同的按键状态更新相应的标志位。最后，在 main() 方法中创建了一个 IceFireGame 实例，启动游戏。