Python+Pygame实现经典魂斗罗游戏

class Game_Player():
 def __init__(self,game_settings,screen):

  self.screen = screen
  self.game_settings = game_settings
  self.image = pygame.image.load('images/PR/player.png')
  self.rect = self.image.get_rect()
  self.screen_rect = self.screen.get_rect()
  self.screen_center_pos = self.screen_rect.centerx
  self.rect.centerx = self.screen_rect.centerx
  self.rect.bottom = 380
  self.center = float(self.rect.centerx)
  self.moving_right = False
  self.moving_left = False
  self.player_moving = False
  self.pos_i = 0.0#跑步画面改变速度
  self.pos_j = 0.0#跳跃的改变初始速度
  self.pos_n = 0.0#射击
  self.pos_d = 0.0
  self.player_direction = 1#1为右，-1为左
  self.player_down = False
  self.player_up = False
  self.player_jump = False
  self.player_start_Y = 380#开始人物的高度
  self.player_Y = self.player_start_Y
  self.player_shooting = False

 def update(self):
  if self.game_settings.player_is_alive:
   if self.moving_right and self.rect.right < self.screen_rect.right:
    if self.game_settings.boss_appear:
     self.center += self.game_settings.player_speed
    elif self.center > self.screen_center_pos:
     self.center += 0
    else:
     self.center += self.game_settings.player_speed
   if self.moving_left and self.rect.left > 0:
    self.center -= self.game_settings.player_speed
   self.rect.centerx = self.center

   self.update_image_moving()
  else:
   self.update_die()

 def update_die(self):
  self.names = locals()
  self.players = []
  for self.i in range(1,3):
   self.names['player_image%s' %self.i] = pygame.image.load('images/PR/death%s.png' %self.i)
   self.players.append(self.names['player_image%s' %self.i])
  self.image = self.players[int(self.pos_d)]
  self.pos_d += 0.1
  if self.pos_d > 2.0:
   self.pos_d = 0.0
   self.game_settings.player_die_end = True


 def update_image_moving_direction(self,direction):#循环图片
  if self.player_shooting == True:
   self.names = locals()
   self.players = []
   for self.i in range(1,4):
    self.names['player_image%s' %self.i] = pygame.image.load('images/'+direction+'/shooting%s.png' %self.i)
    self.players.append(self.names['player_image%s' %self.i])
   self.image = self.players[int(self.pos_n)]
   self.pos_n += 0.1#射击时跑步速率
   if self.pos_n > 3.0:#射击时跑步有3个动作
    self.pos_n = 0.0
  else:
   self.names = locals()
   self.players = []
   for self.i in range(1,6):
    self.names['player_image%s' %self.i] = pygame.image.load('images/'+direction+'/player%s.png' %self.i)
    self.players.append(self.names['player_image%s' %self.i])
   self.image = self.players[int(self.pos_i)]
   self.pos_i += 0.1#跑步速率
   if self.pos_i > 5.0:#跑步有5个动作
    self.pos_i = 0.0

 def update_image_jump(self,direction):#循环图片
  if self.game_settings.player_is_alive:
   if self.player_jump == True:
    self.names1 = locals()
    self.players1 = []
    for self.j in range(1,5):
     self.names1['player_image%s' %self.j] = pygame.image.load('images/'+direction+'/jump%s.png' %self.j)
     self.players1.append(self.names1['player_image%s' %self.j])
    self.image = self.players1[int(self.pos_j)]
    self.pos_j += 0.3#跳跃旋转速率
    if self.pos_j > 4.0:#跳跃有4个动作
     self.pos_j = 0.0
  else:
   self.update_die()


 def update_image_moving(self):
  if self.player_moving:
   if self.moving_right:
    self.update_image_moving_direction('PR')#PR是向右的图片
   elif self.moving_left:
    self.update_image_moving_direction('PL')

 def get_player_state(self,player_state):#检测player的状态是否为趴下，向上，跳跃等
  if self.player_direction == 1:
   self.image = pygame.image.load('images/PR/'+player_state+'.png')
  if self.player_direction == -1:
   self.image = pygame.image.load('images/PL/'+player_state+'.png')
  self.rect = self.image.get_rect()
  self.rect.centerx = self.center

 def get_player_down(self):
  self.get_player_state('down')
  self.rect.bottom = self.player_start_Y
  self.screen.blit(self.image,self.rect)

 def get_player_up(self):
  self.get_player_state('up')
  self.rect.bottom = self.player_start_Y
  self.screen.blit(self.image,self.rect)

 def get_player_jump(self):
  self.get_player_state('jump1')
  self.rect.bottom = self.player_Y
  if self.game_settings.jump_vel < 0:
   self.game_settings.jump_vel += 0.6#跳跃上升的增加的速率
  elif self.game_settings.jump_vel > 0:
   self.game_settings.jump_vel += 0.8#跳跃下降增加的速率
  self.player_Y += self.game_settings.jump_vel
  if self.player_Y > self.player_start_Y:
   self.player_jump = False
   self.player_Y = self.player_start_Y
   self.game_settings.jump_vel = -14.0#恢复跳跃开始的速度
   if self.player_direction == 1:
    self.image = pygame.image.load('images/PR/player.png')
    self.reset_player()
   if self.player_direction == -1:
    self.image = pygame.image.load('images/PL/player.png')
    self.reset_player()
  if self.player_jump == True:#判断是否处于跳跃状态来决定是否旋转跳跃的图像
   if self.player_direction == 1:
    self.update_image_jump('PR')
   if self.player_direction == -1:
    self.update_image_jump('PL')
  self.screen.blit(self.image,self.rect)

 def reset_player(self):
  self.rect = self.image.get_rect()
  self.rect.centerx = self.center
  self.rect.bottom = self.player_start_Y
  self.screen.blit(self.image,self.rect)

 def blitme(self):
  if self.player_jump:
   self.get_player_jump()
  elif self.player_down:
   self.get_player_down()
  elif self.player_up:
   self.get_player_up()
  else:
   self.reset_player()

 def revive_player(self):
  self.center = self.screen_rect.centerx
  self.game_settings.player_is_alive = True