import pygamefrom pygame.locals import *from sys import exitimport timeimport random# 創建子彈類，把子彈的圖片轉化為圖像對象，設定固定的移動速度class Bullet():  def __init__(self,bulletfilename,bulletpos):    self.bulletimg = pygame.image.load(bulletfilename)    self.bullet_rect = self.bulletimg.get_rect()    self.bullet_image = self.bulletimg.subsurface(self.bullet_rect)    self.bullet_rect.midbottom = bulletpos    self.speed = 2  def move(self):    self.bullet_rect.top -= self.speed# 創建玩家飛機類，用面向對象的思想來對待class play_plane_fly():  def __init__(self,play_image_filename,play_pos):    self.image = pygame.image.load(play_image_filename)    self.plane_rect = self.image.get_rect()    self.play_image = self.image.subsurface(self.plane_rect)    self.plane_rect.midtop = play_pos    self.speed = 2    # 子彈是由玩家飛機發射的，所以創建列表，存儲子彈對象，使該列表變為該類的屬性    self.bullets = []    self.is_hitted = False  # 生成函數，完成發射子彈動作，同時將每個子彈對象存在列表中  def shoot(self,bullet_filename):    bulletobj = Bullet(bullet_filename,self.plane_rect.midtop)    self.bullets.append(bulletobj)  # 向上移動，當飛機移動到邊框位置時，無法移動  def moveup(self):    if self.plane_rect.top <= 0:      self.plane_rect.top = 0    else:      self.plane_rect.top -= self.speed  # 向下移動，當飛機移動到邊框位置時，無法移動  def movedown(self):    if self.plane_rect.top >= 950 - self.plane_rect.height:      self.plane_rect.top = 950 - self.plane_rect.height    else:      self.plane_rect.top += self.speed  # 向右移動，當飛機移動到邊框位置時，無法移動  def moveleft(self):    if self.plane_rect.left <= -40:      self.plane_rect.left = -40    else:      self.plane_rect.left -= self.speed  # 向左移動，當飛機移動到邊框位置時，無法移動  def moveright(self):    if self.plane_rect.left >= 700 - self.plane_rect.width:      self.plane_rect.left = 700 - self.plane_rect.width    else:      self.plane_rect.left += self.speed# 生成敵機類，設定固定的移動速度class Enemy():  def __init__(self,enemyfilename,enemypos):    self.img = pygame.image.load(enemyfilename)    self.enemy_rect = self.img.get_rect()    self.enemy_image = self.img.subsurface(self.enemy_rect)    self.enemy_rect.midbottom = enemypos    self.speed = 1  def move(self):    self.enemy_rect.bottom += self.speedclock = pygame.time.Clock()def main():  # 初始化文字屏幕  pygame.font.init()  # 初始化圖像屏幕  pygame.init()  # 設定游戲幀  clock.tick(50)  # 設定游戲屏幕大小  screen = pygame.display.set_mode((660,950))  # 設定游戲名稱  pygame.display.set_caption('飛機大戰')  # 加載背景圖片，生成圖像對象  background = pygame.image.load('image/background.png').convert()  backgroundsurface = pygame.transform.scale(background, (660, 950))  # 加載游戲結束圖片，生成圖像對象  gameover = pygame.image.load('image/gameover.png').convert()  gameoversurface = pygame.transform.scale(gameover,(660, 950))  playplanefilename = 'image/myself.png'  planepos = [330,600]  player = play_plane_fly(playplanefilename,planepos)  bulletfilename = 'image/bullet.png'  # 按頻率生成子彈，初始化數字為0  bullet_frequency = 0  enemyfilename = 'image/airplane.png'  # 按頻率生成敵機，初始化數字為0  enemy_frequency = 0  enemys = []  myfont = pygame.font.SysFont("arial", 40)  textImage = myfont.render("Score ", True, (0,0,0))  # 初始化得分為0  Score = 0  # 敵機被子彈擊中時的動畫，將每張圖片的圖像對象存在列表中  enenys_down = []  enemy0_down = pygame.image.load('image/airplane_ember0.png')  enemy0_down_rect = enemy0_down.get_rect()  enemydown0 = enemy0_down.subsurface(enemy0_down_rect)  enenys_down.append(enemydown0)  enemy1_down = pygame.image.load('image/airplane_ember1.png')  enemy1_down_rect = enemy1_down.get_rect()  enemydown1 = enemy1_down.subsurface(enemy1_down_rect)  enenys_down.append(enemydown1)  enemy2_down = pygame.image.load('image/airplane_ember2.png')  enemy2_down_rect = enemy2_down.get_rect()  enemydown2 = enemy2_down.subsurface(enemy2_down_rect)  enenys_down.append(enemydown2)  enemy3_down = pygame.image.load('image/airplane_ember3.png')  enemy3_down_rect = enemy3_down.get_rect()  enemydown3 = enemy3_down.subsurface(enemy3_down_rect)  enenys_down.append(enemydown3)  while True:    # 動態顯示得分    score = str(Score)    myscore = pygame.font.SysFont("arial", 40)    scoreImage = myscore.render(score, True, (0, 0, 0))    # 判斷事件，防止卡頓或者意外退出    for event in pygame.event.get():      if event.type == pygame.QUIT:        pygame.quit()        exit()    key_pressed = pygame.key.get_pressed()    if key_pressed[K_UP] or key_pressed[K_w]:      player.moveup()    if key_pressed[K_DOWN] or key_pressed[K_s]:      player.movedown()    if key_pressed[K_LEFT] or key_pressed[K_a]:      player.moveleft()    if key_pressed[K_RIGHT] or key_pressed[K_d]:      player.moveright()    screen.blit(backgroundsurface, (0, 0))    if not player.is_hitted:      # 按頻率生成子彈      if bullet_frequency % 30 == 0:        player.shoot(bulletfilename)      bullet_frequency += 1      if bullet_frequency >= 30:        bullet_frequency = 0      # 讓子彈動起來      for i in player.bullets:        i.move()        screen.blit(i.bullet_image,i.bullet_rect)        # 當子彈飛出屏幕，刪除子彈對象        if i.bullet_rect.bottom <= 0:          player.bullets.remove(i)      # 按頻率生成敵機      if enemy_frequency % 100 == 0:        enemypos = [random.randint(30, 630), 0]        enemyplane = Enemy(enemyfilename, enemypos)        #將敵機對象添加到列表中        enemys.append(enemyplane)      enemy_frequency += 1      if enemy_frequency >= 100:        enemy_frequency = 0      # 讓敵機動起來      for i in enemys:        i.move()        screen.blit(i.enemy_image,i.enemy_rect)        # 當敵機飛出屏幕，刪除敵機對象        if i.enemy_rect.bottom >= 950:          enemys.remove(i)        # 遍歷子彈對象，判斷子彈是否擊中敵機        for j in player.bullets:          # 如果擊中，分數增加，同時移除該子彈和敵機對象          if pygame.Rect.colliderect(j.bullet_rect,i.enemy_rect):            Score += 100            enemys.remove(i)            player.bullets.remove(j)            for k in enenys_down:              screen.blit(k,i.enemy_rect)        # 遍歷敵機對象，判斷玩家是否和敵機相撞        if pygame.Rect.colliderect(player.plane_rect,i.enemy_rect):          # 修改is_hitted的值，跳出該層循環          player.is_hitted = True          break      screen.blit(player.play_image,player.plane_rect)      screen.blit(textImage, (0,0))      screen.blit(scoreImage, (110, 0))      pygame.display.update()    # 玩家退出時顯示分數和游戲結束    else:      screen.blit(gameoversurface,(0,0))      screen.blit(textImage, (0, 0))      screen.blit(scoreImage, (110, 0))      pygame.display.update()      time.sleep(2)      breakmain()