Java 实现 捕鱼达人 小游戏【附源码】

package org.gpf.fishlord;

import java.io.IOException;

import javax.swing.JFrame;
import javax.swing.JOptionPane;

/**
 * 游戏窗体
 * @author gaopengfei
 * @date -4-12 下午7:39:19
 */
public class FishlordFrame extends JFrame {

  public static final int WIDTH = 800;
  public static final int HEIGHT = 480;
  
  private Pool pool;
  
  /**
   * 构造器中初始化界面
   */
  public FishlordFrame() {
    
    this.setTitle("捕鱼达人");
    this.setSize(WIDTH, HEIGHT);
    this.setLocationRelativeTo(null); // 设置窗口居中，必须放在setSize之后
    this.setResizable(false);
    this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    
    try {
      pool = new Pool();
      this.getContentPane().add(pool);
      this.setVisible(true);
      pool.action();
    } catch (IOException e) {
      JOptionPane.showMessageDialog(this, "加载资源失败！","应用程序错误",JOptionPane.ERROR_MESSAGE);
      e.printStackTrace();
    } catch (Exception e) {
      JOptionPane.showMessageDialog(this, "初始化游戏失败！","应用程序错误",JOptionPane.ERROR_MESSAGE);
      e.printStackTrace();
    }
    
  }
  
}

package org.gpf.fishlord;

import java.awt.image.BufferedImage;
import java.io.IOException;
import java.util.Random;

import javax.imageio.ImageIO;

class Fish implements Runnable {
  
  private static final int BASE_STEP = 5;       // x和y坐标的步进值的参考标准
  int speedOfFish = 20;               // 控制鱼的速度
  
  int x, y, index, width, height, xStep,yStep;

  BufferedImage fishImage;                            // 当前鱼的背景图
  BufferedImage[] fishImages = new BufferedImage[10]; // 一条鱼的所有帧的图片
  Random r;                     // 产生随机数

  /**
   * 在构造器中初始化鱼的属性
   * @param fishname
   * @throws IOException
   */
  public Fish(String fishName) throws IOException {
    // 加载鱼的图片
    BufferedImage tempFishImage;
    String resourceName;
    for (int i = 0; i < 10; i++) {
      if (i!=9) {
        resourceName = "/images/" + fishName + "_0" + (i+1) + ".png";
      }else {
        resourceName = "/images/" + fishName + "_" + (i+1) + ".png";
      }
      tempFishImage = ImageIO.read(getClass().getResourceAsStream(resourceName));
      fishImages[i] = tempFishImage;
    }
    fishImage = fishImages[index];
    
    width = fishImage.getWidth();             // 根据背景图片的宽高设置鱼所占矩形区域的大小
    height = fishImage.getHeight();
    
    goInPool();
  }

  /**
   * 维持鱼的游动---x和y坐标的变化
   */
  public void run() {
    while (true) {
      try {
        Thread.sleep(speedOfFish); // 如果不休眠，鱼的速度过快，基本感觉不到鱼的存在。视觉暂留：1/24~1/7秒之间
        index++;
        fishImage = fishImages[index % fishImages.length]; // 轮流切换帧，生成动画
        x = x - xStep;
        int temp = r.nextInt(10) + 1;
        yStep = r.nextBoolean()?temp:-temp;
//        y = y + yStep;
        
        // 判断鱼是否到了边界，因为鱼是从右面进入的，因此只需要判断3个方向
        if (x <= 0 || y <= 0 || y >= 480){
          goInPool();
        }
        
      } catch (InterruptedException e) {
        e.printStackTrace();
      }
    }
  }

  /**
   *  判断鱼是否在网内
   */
  public boolean fishInNet(int netX, int netY) {
    int dx = netX - x;
    int dy = netY - y;
    return dx >= 0 && dx <= width && dy >= 0 && dy <= height;
  }

  /**
   * 鱼从屏幕上游出或者被网罩住的时候消失，再从屏幕的右侧游动到屏幕中,实际上还是那几条鱼
   */
  void goInPool() {
    r = new Random();
    x = FishlordFrame.WIDTH - 10;           // 鱼从右侧游动到屏幕左侧
    y = r.nextInt(FishlordFrame.HEIGHT - 20 - height);  // 鱼的初始y的坐标是根据窗体的高度随机指定的
    xStep = r.nextInt(BASE_STEP) + 1;         // 鱼游动的速度是随机的                        
  }
}

package com.dq.ui;

public class StartGame {
  
  public static void main(String[] args) {
    
    new SnakeFrame();
  }
}