问题描述
我正在制作一个飞船游戏,你可以控制飞船并向敌人发射子弹。我现在正在尝试在玩家和任何敌人发生碰撞时显示背景游戏,但是当我运行游戏时,背景游戏从未显示!
这是我当前的代码(有些部分被省略或替换为--snip--):
class Spaceship(pygame.sprite.Sprite):
def __init__(self,s,x,y):
pygame.sprite.Sprite.__init__(self)
self.screen = s
self.x,self.y = x,y
self.image = pygame.image.load("spaceship.png")
self.image = pygame.transform.scale(self.image,(175,175))
self.rect = self.image.get_rect()
self.rect.center = (self.x,self.y)
def update(self):
self.rect.center = (self.x,self.y)
class Bullet(pygame.sprite.Sprite):
def __init__(self,y
self.image = pygame.image.load("bullet.png")
self.image = pygame.transform.scale(self.image,(100,100))
self.rect = self.image.get_rect()
self.rect.center = (self.x,self.y)
def update(self):
self.y -= 5
self.rect.center = (self.x,self.y)
if self.y < 0:
self.kill()
class Enemy(pygame.sprite.Sprite):
def __init__(self,y,t):
pygame.sprite.Sprite.__init__(self)
self.type = t
self.screen,self.x,self.y = s,y
self.image = pygame.image.load("enemy.png")
self.image = pygame.transform.scale(self.image,(235,215))
self.rect = self.image.get_rect()
self.rect = self.image.get_rect()
self.rect.center = (self.x,self.y)
self.score_given = get_enemy_given_score()[self.type]
def update(self):
if self.y < 0:
self.kill()
self.y += 3
self.rect.center = (self.x,self.y)
class GameOverBackground(pygame.sprite.Sprite):
def __init__(self,size=(100,100)):
pygame.sprite.Sprite.__init__(self)
self.screen,y
self.size = size
self.image = pygame.image.load("Game_Over.jpg")
self.image = pygame.transform.scale(self.image,self.size)
self.rect = self.image.get_rect()
def blitme(self):
self.screen.blit(self.image,self.rect)
bg = GameOverBackground(screen,0)
spaceship = Spaceship(screen,400,400)
bullets = pygame.sprite.Group()
enemies = pygame.sprite.Group()
clock = pygame.time.Clock()
enemy_interval = 2000 # It's in milliseconds
enemy_event = pygame.USEREVENT + 1
pygame.time.set_timer(enemy_event,enemy_interval)
score = 0
font = pygame.font.SysFont("Arial",30)
textsurface = font.render("score: {:,}".format(score),True,(0,0))
spaceship_collided = False
running = True
while running:
--snip--
screen.fill((255,255,255)) # DO NOT DRAW ANYTHING IN FRONT OF THIS LINE,I'M WARNING YOU
bullets.update()
key = pygame.key.get_pressed()
amount = 5
if key[pygame.K_a]:
spaceship.x -= amount
--snip--
spaceship.update()
if not spaceship_collided:
screen.blit(spaceship.image,spaceship.rect)
if spaceship_collided is False:
bullets.draw(screen)
enemies.draw(screen)
for i in enemies:
i.update()
if pygame.sprite.spritecollide(i,bullets,True):
score += i.score_given
i.kill()
if score >= 99999:
score = 99999
textsurface = font.render("score: {:,0))
screen.blit(textsurface,(590,0))
if pygame.sprite.spritecollide(spaceship,enemies,dokill=True):
spaceship_collided = True
bg.blitme()
pygame.display.update()
clock.tick(60)
有人可以帮我吗?
解决方法
条件 pygame.sprite.spritecollide(spaceship,enemies,dokill=True):
os 仅在单个帧中满足。如果你想在屏幕上永久显示游戏,你需要根据spaceship_collided
来绘制它:
running = True
while running:
# [...]
if pygame.sprite.spritecollide(spaceship,dokill=True):
spaceship_collided = True
if spaceship_collided:
bg.blitme()
pygame.display.update()
clock.tick(60)