Java实现打飞机小游戏（附完整源码）

import java.util.random;


 敌飞机: 是飞行物，也是敌人

public class airplane extends flyingobject implements enemy {
 private int speed = 3; //移动步骤

 /** 初始化数据 */
 public airplane(){
  this.image = shootgame.airplane;
  width = image.getwidth();
  height = image.getheight();
  y = -height;   
  random rand = new random();
  x = rand.nextint(shootgame.width - width);
 }

 /** 获取分数 */
 @override
 public int getscore() { 
  return 5;
 }

 /** //越界处理 */
 @override
 public  boolean outofbounds() { 
  return y>shootgame.height;
 }

 /** 移动 */
 @override
 public void step() { 
  y += speed;
 }

}

/** 
 * 奖励 
 */ 
public interface award { 
 int double_fire = 0; //双倍火力 
 int life = 1; //1条命 
 /** 获得奖励类型(上面的0或1) */ 
 int gettype(); 
}

import java.util.random; 

/** 蜜蜂 */ 
public class bee extends flyingobject implements award{ 
 private int xspeed = 1; //x坐标移动速度 
 private int yspeed = 2; //y坐标移动速度 
 private int awardtype; //奖励类型 

 /** 初始化数据 */ 
 public bee(){ 
  this.image = shootgame.bee; 
  width = image.getwidth(); 
  height = image.getheight(); 
  y = -height; 
  random rand = new random(); 
  x = rand.nextint(shootgame.width - width); 
  awardtype = rand.nextint(2); //初始化时给奖励 
 } 

 /** 获得奖励类型 */ 
 public int gettype(){ 
  return awardtype; 
 } 

 /** 越界处理 */ 
 @override 
 public boolean outofbounds() { 
  return y>shootgame.height; 
 } 

 /** 移动，可斜着飞 */ 
 @override 
 public void step() {  
  x += xspeed; 
  y += yspeed; 
  if(x > shootgame.width-width){ 
   xspeed = -1; 
  } 
  if(x < 0){ 
   xspeed = 1; 
  } 
 } 
}

/** 
 * 子弹类:是飞行物 
 */ 
public class bullet extends flyingobject { 
 private int speed = 3; //移动的速度 

 /** 初始化数据 */ 
 public bullet(int x,int y){ 
  this.x = x; 
  this.y = y; 
  this.image = shootgame.bullet; 
 } 

 /** 移动 */ 
 @override 
 public void step(){  
  y-=speed; 
 } 

 /** 越界处理 */ 
 @override 
 public boolean outofbounds() { 
  return y<-height; 
 } 

}

/** 
 * 敌人，可以有分数 
 */ 
public interface enemy { 
 /** 敌人的分数 */ 
 int getscore(); 
}

import java.awt.image.bufferedimage; 

/** 
 * 飞行物(敌机，蜜蜂，子弹，英雄机) 
 */ 
public abstract class flyingobject { 
 protected int x; //x坐标 
 protected int y; //y坐标 
 protected int width; //宽 
 protected int height; //高 
 protected bufferedimage image; //图片 

 public int getx() { 
  return x; 
 } 

 public void setx(int x) { 
  this.x = x; 
 } 

 public int gety() { 
  return y; 
 } 

 public void sety(int y) { 
  this.y = y; 
 } 

 public int getwidth() { 
  return width; 
 } 

 public void setwidth(int width) { 
  this.width = width; 
 } 

 public int getheight() { 
  return height; 
 } 

 public void setheight(int height) { 
  this.height = height; 
 } 

 public bufferedimage getimage() { 
  return image; 
 } 

 public void setimage(bufferedimage image) { 
  this.image = image; 
 } 

 /** 
  * 检查是否出界 
  * @return true 出界与否 
  */ 
 public abstract boolean outofbounds(); 

 /** 
  * 飞行物移动一步 
  */ 
 public abstract void step(); 

 /** 
  * 检查当前飞行物体是否被子弹(x,y)击(shoot)中 
  * @param bullet 子弹对象 
  * @return true表示被击中了 
  */ 
 public boolean shootby(bullet bullet){ 
  int x = bullet.x; //子弹横坐标 
  int y = bullet.y; //子弹纵坐标 
  return this.x<x && x<this.x+width && this.y<y && y<this.y+height; 
 } 

}

import java.awt.image.bufferedimage; 

/** 
 * 英雄机:是飞行物 java学习交流qq群：589809992 我们一起学java！
 */ 
public class hero extends flyingobject{ 

 private bufferedimage[] images = {}; //英雄机图片 
 private int index = 0;    //英雄机图片切换索引 

 private int doublefire; //双倍火力 
 private int life; //命 

 /** 初始化数据 */ 
 public hero(){ 
  life = 3; //初始3条命 
  doublefire = 0; //初始火力为0 
  images = new bufferedimage[]{shootgame.hero0, shootgame.hero1}; //英雄机图片数组 
  image = shootgame.hero0; //初始为hero0图片 
  width = image.getwidth(); 
  height = image.getheight(); 
  x = 150; 
  y = 400; 
 } 

 /** 获取双倍火力 */ 
 public int isdoublefire() { 
  return doublefire; 
 } 

 /** 设置双倍火力 */ 
 public void setdoublefire(int doublefire) { 
  this.doublefire = doublefire; 
 } 

 /** 增加火力 */ 
 public void adddoublefire(){ 
  doublefire = 40; 
 } 

 /** 增命 */ 
 public void addlife(){ //增命 
  life++; 
 } 

 /** 减命 */ 
 public void subtractlife(){ //减命 
  life--; 
 } 

 /** 获取命 */ 
 public int getlife(){ 
  return life; 
 } 

 /** 当前物体移动了一下，相对距离，x,y鼠标位置 */ 
 public void moveto(int x,int y){  
  this.x = x - width/2; 
  this.y = y - height/2; 
 } 

 /** 越界处理 */ 
 @override 
 public boolean outofbounds() { 
  return false; 
 } 

 /** 发射子弹 */ 
 public bullet[] shoot(){  
  int xstep = width/4;  //4半 
  int ystep = 20; //步 
  if(doublefire>0){ //双倍火力 
   bullet[] bullets = new bullet[2]; 
   bullets[0] = new bullet(x+xstep,y-ystep); //y-ystep(子弹距飞机的位置) 
   bullets[1] = new bullet(x+3*xstep,y-ystep); 
   return bullets; 
  }else{  //单倍火力 
   bullet[] bullets = new bullet[1]; 
   bullets[0] = new bullet(x+2*xstep,y-ystep); 
   return bullets; 
  } 
 } 

 /** 移动 */ 
 @override 
 public void step() { 
  if(images.length>0){ 
   image = images[index++/10%images.length]; //切换图片hero0，hero1 
  } 
 } 

 /** 碰撞算法 */ 
 public boolean hit(flyingobject other){ 

  int x1 = other.x - this.width/2;     //x坐标最小距离 
  int x2 = other.x + this.width/2 + other.width; //x坐标最大距离 
  int y1 = other.y - this.height/2;    //y坐标最小距离 
  int y2 = other.y + this.height/2 + other.height; //y坐标最大距离 

  int herox = this.x + this.width/2;    //英雄机x坐标中心点距离 
  int heroy = this.y + this.height/2;    //英雄机y坐标中心点距离 

  return herox>x1 && herox<x2 && heroy>y1 && heroy<y2; //区间范围内为撞上了 
 } 

}

import java.awt.font; 
import java.awt.color; 
import java.awt.graphics; 
import java.awt.event.mouseadapter; 
import java.awt.event.mouseevent; 
import java.util.arrays; 
import java.util.random; 
import java.util.timer; 
import java.util.timertask; 
import java.awt.image.bufferedimage; 

import javax.imageio.imageio; 
import javax.swing.imageicon; 
import javax.swing.jframe; 
import javax.swing.jpanel; 
/**
 * java学习交流qq群：589809992 我们一起学java！
 */
public class shootgame extends jpanel { 
 public static final int width = 400; // 面板宽 
 public static final int height = 654; // 面板高 
 /** 游戏的当前状态: start running pause game_over */ 
 private int state; 
 private static final int start = 0; 
 private static final int running = 1; 
 private static final int pause = 2; 
 private static final int game_over = 3; 

 private int score = 0; // 得分 
 private timer timer; // 定时器 
 private int intervel = 1000 / 100; // 时间间隔(毫秒) 

 public static bufferedimage background; 
 public static bufferedimage start; 
 public static bufferedimage airplane; 
 public static bufferedimage bee; 
 public static bufferedimage bullet; 
 public static bufferedimage hero0; 
 public static bufferedimage hero1; 
 public static bufferedimage pause; 
 public static bufferedimage gameover; 

 private flyingobject[] flyings = {}; // 敌机数组 
 private bullet[] bullets = {}; // 子弹数组 
 private hero hero = new hero(); // 英雄机 

 static { // 静态代码块，初始化图片资源 
  try { 
   background = imageio.read(shootgame.class 
     .getresource("background.png")); 
   start = imageio.read(shootgame.class.getresource("start.png")); 
   airplane = imageio 
     .read(shootgame.class.getresource("airplane.png")); 
   bee = imageio.read(shootgame.class.getresource("bee.png")); 
   bullet = imageio.read(shootgame.class.getresource("bullet.png")); 
   hero0 = imageio.read(shootgame.class.getresource("hero0.png")); 
   hero1 = imageio.read(shootgame.class.getresource("hero1.png")); 
   pause = imageio.read(shootgame.class.getresource("pause.png")); 
   gameover = imageio 
     .read(shootgame.class.getresource("gameover.png")); 
  } catch (exception e) { 
   e.printstacktrace(); 
  } 
 } 

 /** 画 */ 
 @override 
 public void paint(graphics g) { 
  g.drawimage(background, 0, 0, null); // 画背景图 
  painthero(g); // 画英雄机 
  paintbullets(g); // 画子弹 
  paintflyingobjects(g); // 画飞行物 
  paintscore(g); // 画分数 
  paintstate(g); // 画游戏状态 
 } 

 /** 画英雄机 */ 
 public void painthero(graphics g) { 
  g.drawimage(hero.getimage(), hero.getx(), hero.gety(), null); 
 } 

 /** 画子弹 */ 
 public void paintbullets(graphics g) { 
  for (int i = 0; i < bullets.length; i++) { 
   bullet b = bullets[i]; 
   g.drawimage(b.getimage(), b.getx() - b.getwidth() / 2, b.gety(), 
     null); 
  } 
 } 

 /** 画飞行物 */ 
 public void paintflyingobjects(graphics g) { 
  for (int i = 0; i < flyings.length; i++) { 
   flyingobject f = flyings[i]; 
   g.drawimage(f.getimage(), f.getx(), f.gety(), null); 
  } 
 } 

 /** 画分数 */ 
 public void paintscore(graphics g) { 
  int x = 10; // x坐标 
  int y = 25; // y坐标 
  font font = new font(font.sans_serif, font.bold, 22); // 字体 
  g.setcolor(new color(0xff0000)); 
  g.setfont(font); // 设置字体 
  g.drawstring("score:" + score, x, y); // 画分数 
  y=y+20; // y坐标增20 
  g.drawstring("life:" + hero.getlife(), x, y); // 画命 
 } 

 /** 画游戏状态 */ 
 public void paintstate(graphics g) { 
  switch (state) { 
  case start: // 启动状态 
   g.drawimage(start, 0, 0, null); 
   break; 
  case pause: // 暂停状态 
   g.drawimage(pause, 0, 0, null); 
   break; 
  case game_over: // 游戏终止状态 
   g.drawimage(gameover, 0, 0, null); 
   break; 
  } 
 } 

 public static void main(string[] args) { 
  jframe frame = new jframe("fly"); 
  shootgame game = new shootgame(); // 面板对象 
  frame.add(game); // 将面板添加到jframe中 
  frame.setsize(width, height); // 设置大小 
  frame.setalwaysontop(true); // 设置其总在最上 
  frame.setdefaultcloseoperation(jframe.exit_on_close); // 默认关闭操作 
  frame.seticonimage(new imageicon("images/icon.jpg").getimage()); // 设置窗体的图标 
  frame.setlocationrelativeto(null); // 设置窗体初始位置 
  frame.setvisible(true); // 尽快调用paint 

  game.action(); // 启动执行 
 } 

 /** 启动执行代码 */ 
 public void action() { 
  // 鼠标监听事件 
  mouseadapter l = new mouseadapter() { 
   @override 
   public void mousemoved(mouseevent e) { // 鼠标移动 
    if (state == running) { // 运行状态下移动英雄机--随鼠标位置 
     int x = e.getx(); 
     int y = e.gety(); 
     hero.moveto(x, y); 
    } 
   } 

   @override 
   public void mouseentered(mouseevent e) { // 鼠标进入 
    if (state == pause) { // 暂停状态下运行 
     state = running; 
    } 
   } 

   @override 
   public void mouseexited(mouseevent e) { // 鼠标退出 
    if (state == running) { // 游戏未结束，则设置其为暂停 
     state = pause; 
    } 
   } 

   @override 
   public void mouseclicked(mouseevent e) { // 鼠标点击 
    switch (state) { 
    case start: 
     state = running; // 启动状态下运行 
     break; 
    case game_over: // 游戏结束，清理现场 
     flyings = new flyingobject[0]; // 清空飞行物 
     bullets = new bullet[0]; // 清空子弹 
     hero = new hero(); // 重新创建英雄机 
     score = 0; // 清空成绩 
     state = start; // 状态设置为启动 
     break; 
    } 
   } 
  }; 
  this.addmouselistener(l); // 处理鼠标点击操作 
  this.addmousemotionlistener(l); // 处理鼠标滑动操作 

  timer = new timer(); // 主流程控制 
  timer.schedule(new timertask() { 
   @override 
   public void run() { 
    if (state == running) { // 运行状态 
     enteraction(); // 飞行物入场 
     stepaction(); // 走一步 
     shootaction(); // 英雄机射击 
     bangaction(); // 子弹打飞行物 
     outofboundsaction(); // 删除越界飞行物及子弹 
     checkgameoveraction(); // 检查游戏结束 
    } 
    repaint(); // 重绘，调用paint()方法 
   } 

  }, intervel, intervel); 
 } 

 int flyenteredindex = 0; // 飞行物入场计数 

 /** 飞行物入场 */ 
 public void enteraction() { 
  flyenteredindex++; 
  if (flyenteredindex % 40 == 0) { // 400毫秒生成一个飞行物--10*40 
   flyingobject obj = nextone(); // 随机生成一个飞行物 
   flyings = arrays.copyof(flyings, flyings.length + 1); 
   flyings[flyings.length - 1] = obj; 
  } 
 } 

 /** 走一步 */ 
 public void stepaction() { 
  for (int i = 0; i < flyings.length; i++) { // 飞行物走一步 
   flyingobject f = flyings[i]; 
   f.step(); 
  } 

  for (int i = 0; i < bullets.length; i++) { // 子弹走一步 
   bullet b = bullets[i]; 
   b.step(); 
  } 
  hero.step(); // 英雄机走一步 
 } 

 /** 飞行物走一步 */ 
 public void flyingstepaction() { 
  for (int i = 0; i < flyings.length; i++) { 
   flyingobject f = flyings[i]; 
   f.step(); 
  } 
 } 

 int shootindex = 0; // 射击计数 

 /** 射击 */ 
 public void shootaction() { 
  shootindex++; 
  if (shootindex % 30 == 0) { // 300毫秒发一颗 
   bullet[] bs = hero.shoot(); // 英雄打出子弹 
   bullets = arrays.copyof(bullets, bullets.length + bs.length); // 扩容 
   system.arraycopy(bs, 0, bullets, bullets.length - bs.length, 
     bs.length); // 追加数组 
  } 
 } 

 /** 子弹与飞行物碰撞检测 */ 
 public void bangaction() { 
  for (int i = 0; i < bullets.length; i++) { // 遍历所有子弹 
   bullet b = bullets[i]; 
   bang(b); // 子弹和飞行物之间的碰撞检查 
  } 
 } 

 /** 删除越界飞行物及子弹 */ 
 public void outofboundsaction() { 
  int index = 0; // 索引 
  flyingobject[] flyinglives = new flyingobject[flyings.length]; // 活着的飞行物 
  for (int i = 0; i < flyings.length; i++) { 
   flyingobject f = flyings[i]; 
   if (!f.outofbounds()) { 
    flyinglives[index++] = f; // 不越界的留着 
   } 
  } 
  flyings = arrays.copyof(flyinglives, index); // 将不越界的飞行物都留着 

  index = 0; // 索引重置为0 
  bullet[] bulletlives = new bullet[bullets.length]; 
  for (int i = 0; i < bullets.length; i++) { 
   bullet b = bullets[i]; 
   if (!b.outofbounds()) { 
    bulletlives[index++] = b; 
   } 
  } 
  bullets = arrays.copyof(bulletlives, index); // 将不越界的子弹留着 
 } 

 /** 检查游戏结束 */ 
 public void checkgameoveraction() { 
  if (isgameover()==true) { 
   state = game_over; // 改变状态 
  } 
 } 

 /** 检查游戏是否结束 */ 
 public boolean isgameover() { 

  for (int i = 0; i < flyings.length; i++) { 
   int index = -1; 
   flyingobject obj = flyings[i]; 
   if (hero.hit(obj)) { // 检查英雄机与飞行物是否碰撞 
    hero.subtractlife(); // 减命 
    hero.setdoublefire(0); // 双倍火力解除 
    index = i; // 记录碰上的飞行物索引 
   } 
   if (index != -1) { 
    flyingobject t = flyings[index]; 
    flyings[index] = flyings[flyings.length - 1]; 
    flyings[flyings.length - 1] = t; // 碰上的与最后一个飞行物交换 

    flyings = arrays.copyof(flyings, flyings.length - 1); // 删除碰上的飞行物 
   } 
  } 

  return hero.getlife() <= 0; 
 } 

 /** 子弹和飞行物之间的碰撞检查 */ 
 public void bang(bullet bullet) { 
  int index = -1; // 击中的飞行物索引 
  for (int i = 0; i < flyings.length; i++) { 
   flyingobject obj = flyings[i]; 
   if (obj.shootby(bullet)) { // 判断是否击中 
    index = i; // 记录被击中的飞行物的索引 
    break; 
   } 
  } 
  if (index != -1) { // 有击中的飞行物 
   flyingobject one = flyings[index]; // 记录被击中的飞行物 

   flyingobject temp = flyings[index]; // 被击中的飞行物与最后一个飞行物交换 
   flyings[index] = flyings[flyings.length - 1]; 
   flyings[flyings.length - 1] = temp; 

   flyings = arrays.copyof(flyings, flyings.length - 1); // 删除最后一个飞行物(即被击中的) 

   // 检查one的类型(敌人加分，奖励获取) 
   if (one instanceof enemy) { // 检查类型，是敌人，则加分 
    enemy e = (enemy) one; // 强制类型转换 
    score += e.getscore(); // 加分 
   } else { // 若为奖励，设置奖励 
    award a = (award) one; 
    int type = a.gettype(); // 获取奖励类型 
    switch (type) { 
    case award.double_fire: 
     hero.adddoublefire(); // 设置双倍火力 
     break; 
    case award.life: 
     hero.addlife(); // 设置加命 
     break; 
    } 
   } 
  } 
 } 

 /** 
  * 随机生成飞行物 
  * 
  * @return 飞行物对象 
  */ 
 public static flyingobject nextone() { 
  random random = new random(); 
  int type = random.nextint(20); // [0,20) 
  if (type < 4) { 
   return new bee(); 
  } else { 
   return new airplane(); 
  } 
 } 

}