"Object is iterable", 이전에 반복 가능 후

Question

Im 공간 침략자 게임을 만듭니다. (매우 미완료 된)

충돌 검사를 추가하면 이전에 작업 한 "for"루프 중 하나가 반복에서 중지됩니다. iterable 값을 삭제하는 것과 관련이 있다고 가정하고 있지만이를 해결하는 방법을 알 수 없습니다.

도움이 필요하시면 대단히 감사하겠습니다.

import pygame,time,sys,random 

BLACK=(0,0,0) 
WHITE=(255,255,255) 
RED=(255,0,0) 
BLUE=(0,0,255) 
GREEN=(0,255,0) 

Done=False 
clock=pygame.time.Clock() 

class Invader(pygame.sprite.Sprite): 
    def __init__(self, colour): 
     super(Invader , self).__init__() 
     self.image=pygame.Surface([20,20]) 
     self.image.fill(colour) 
     self.rect=self.image.get_rect() 


class Player(pygame.sprite.Sprite): 
    def __init__(self, colour): 
     super(Player, self).__init__() 
     self.image=pygame.Surface([20,20]) 
     self.image.fill(colour) 
     self.rect=self.image.get_rect() 

class Player_bullet(pygame.sprite.Sprite): 
    def __init__(self, colour): 
     super(Player_bullet, self).__init__() 
     self.image=pygame.Surface([5,15]) 
     self.image.fill(colour) 
     self.rect=self.image.get_rect() 

    def update(self): 
     self.rect.y-=10 
     pygame.sprite.groupcollide(obstacles_sprite,player_bullet_sprite,False,True) 

class Invader_bullet(pygame.sprite.Sprite): 
    def __init__(self, colour): 
     super(Invader_bullet, self).__init__() 
     self.image=pygame.Surface([5,15]) 
     self.image.fill(colour) 
     self.rect=self.image.get_rect() 

    def update(self): 
     self.rect.y+=10 
     pygame.sprite.groupcollide(obstacles_sprite,invaders_bullet_sprite,False,True) 

class Obstacles(pygame.sprite.Sprite): 
    def __init__(self,colour,x,y): 
     super(Obstacles,self).__init__() 
     self.image=pygame.Surface([150,50]) 
     self.image.fill(colour) 
     self.rect=self.image.get_rect() 
     self.rect.x=x 
     self.rect.y=y 


pygame.init() 

screen_height=400 
screen_width=700 
screen=pygame.display.set_mode([screen_width,screen_height]) 


all_sprites=pygame.sprite.Group() 
player_sprite=pygame.sprite.Group() 
invaders_sprite=pygame.sprite.Group() 
player_bullet_sprite=pygame.sprite.Group() 
invaders_bullet_sprite=pygame.sprite.Group() 
obstacles_sprite=pygame.sprite.Group() 

player=Player(BLUE) 
player_sprite.add(player) 
all_sprites.add(player) 

obstacle=Obstacles(BLACK,50,300) 
obstacle1=Obstacles(BLACK,275,300) 
obstacle2=Obstacles(BLACK,500,300) 
obstacles_sprite.add(obstacle,obstacle1,obstacle2) 
all_sprites.add(obstacle,obstacle1,obstacle2) 

player.rect.x=100 
player.rect.y=375 

for i in range(10): 
    for x in range(3):### create grid for space invaders and draw 
     invader=Invader(BLACK) 
     invader.rect.x=50*i 
     invader.rect.y=25*x 
     invaders_sprite.add(invader) 
     all_sprites.add(invader) 

while not Done: 
    for event in pygame.event.get(): 
     if event.type == pygame.QUIT: 
      Done = True 

     if event.type==pygame.KEYDOWN: 
      if event.key==pygame.K_SPACE:#### if space then create and fire bullet 
       bullet=Player_bullet(BLACK) 
       bullet.rect.x=player.rect.centerx 
       bullet.rect.y=player.rect.y 
       if len(player_bullet_sprite)<1: 
        player_bullet_sprite.add(bullet) 
        all_sprites.add(bullet) 

    if event.type==pygame.KEYDOWN: 
     if event.key==pygame.K_LEFT: 
      player.rect.x-=5 
     elif event.key==pygame.K_RIGHT: 
      player.rect.x+=5 


    for bullet in player_bullet_sprite: #####if bullet goes offscreen delete, 1 at a time 
     hit=pygame.sprite.spritecollide(bullet,invaders_sprite,True)#kill invader, PROBLEM.... 

     for invaders_sprite in hit: 
      player_bullet_sprite.remove(bullet) 
      all_sprites.remove(bullet) 

     if bullet.rect.y<0: 
      player_bullet_sprite.remove(bullet) 
      all_sprites.remove(bullet) 

    for invader in invaders_sprite:##PROBLEM 
     if player.rect.x==invader.rect.x: ### if invader is same x as player fire, 1 
      if len(invaders_bullet_sprite)<1: 
       invader_bullet=Invader_bullet(RED) 
       invader_bullet.rect.x=invader.rect.centerx 
       invader_bullet.rect.y=invader.rect.y 
       invaders_bullet_sprite.add(invader_bullet) 
       all_sprites.add(invader_bullet) 

    for invader_bullet in invaders_bullet_sprite: ## remove if bullet offscreen 
     pygame.sprite.spritecollide(invader_bullet,player_sprite,True)## check collision, kill player 
     if invader_bullet.rect.y>screen_height: 
      invaders_bullet_sprite.remove(invader_bullet) 
      all_sprites.remove(invader_bullet) 







    all_sprites.update() 
    screen.fill(WHITE) 
    all_sprites.draw(screen) 
    pygame.display.flip() 
    clock.tick(60) 

Answer 1

당신은 for invaders_sprite in hit에 invaders_sprite의 값을 덮어 쓰기합니다. 즉, invaders_sprite은 더 이상 반복 가능한 스프라이트 그룹을 참조하지 않습니다.

프로그램을 더 작은 함수로 분할하고 전역 변수를 수정하지 않도록하십시오.