Question

我尝试使用python的pygame制作蛇游戏。我所做的就是在特定距离的起点处创建2个线段，这将是我的蛇，并且当它吃掉更多物体时，它会成长。但是我希望我的游戏在蛇头与任何其他部分碰撞时结束。我使用了精灵碰撞方法来检测蛇头（这里是snake_segment [0]）与段组之间的碰撞。这是与我的问题相关的代码

class Segment(pygame.sprite.Sprite):
def __init__(self,x,y):
    pygame.sprite.Sprite.__init__(self)
    self.image = pygame.Surface([segment_width,segment_height])
    self.image.fill(black)
    self.rect = self.image.get_rect()
    self.rect.x = x
    self.rect.y = y

# we create the apple object here
class Apple(pygame.sprite.Sprite):
def __init__(self):
    super().__init__()
    self.image = pygame.transform.scale(apple1,(25,25))
    self.image.set_colorkey(white)
    self.rect = self.image.get_rect()
    self.rect.x = random.randrange(30,screen_width-30)
    self.rect.y = random.randrange(30,screen_height-30)

# we create the function for sprites so that we can manage all the sprites
all_sprites = pygame.sprite.Group()
segment_group = pygame.sprite.Group()
snake_segment = [] # we create this list to store all thhe segments
for  i in range(0,2):
    x = 250 - (segment_width+ segement_margin)*i
    y= 30
    segments =Segment(x,y)
    snake_segment.append(segments)
    all_sprites.add(segments)
segment_group.add(segments)
apple_group = pygame.sprite.Group()
apple =Apple()
apple_group.add(apple)
all_sprites.add(apple)
running = True
while running:
# we tweak the fps here
clock.tick(fps)

# we keep track of all the events here
for event in pygame.event.get():
    # if the user wishes to quit
    if event.type == pygame.QUIT:
        running = False

    # we set the movement of the segments
    if event.type == pygame.KEYDOWN:
        if event.key == pygame.K_UP:
            y_change = (segment_height + segement_margin)*-1
            x_change=0
        if event.key == pygame.K_DOWN:
            y_change = (segment_height + segement_margin)
            x_change= 0
        if event.key == pygame.K_LEFT:
            x_change = (segment_width + segement_margin)*-1
            y_change = 0
        if event.key == pygame.K_RIGHT:
            x_change = (segment_width + segement_margin)
            y_change = 0



# we remove the last element of the snake segment 
old_segment = snake_segment.pop()
all_sprites.remove(old_segment)

# we add the new element on the top of the snake
x = snake_segment[0].rect.x + x_change
y = snake_segment[0].rect.y + y_change
segment = Segment(x,y)
snake_segment.insert(0,segment)
all_sprites.add(segment)
# here we detect collison between apple group and snake sprite and make changes

eat_coll = pygame.sprite.spritecollide(snake_segment[0],apple_group,True) 
if eat_coll:
    x = snake_segment[-1].rect.x - x_change
    y = snake_segment[-1].rect.y - y_change
    segment = Segment(x,y)
    snake_segment.insert(-1,segment)
    segment_group.add(segment)
    apple = Apple()
    apple_group.add(apple)
    all_sprites.add(apple)
    bite_sound.play()

snake_coll = pygame.sprite.spritecollide(snake_segment[0],segment_group,False)
if snake_coll:
    running = False

# update each sprite

all_sprites.add(segment)

# here we fill the background

screen.blit(background_image,background_rect)
all_sprites.draw(screen)

# we will update the screen

pygame.display.update()

Answer 1

只需检查蛇头是否在蛇体内即可。

def self_collision(self):
    """
    Return True if head is inside the body
    """
    return self.snake_segnment[0] in self.snake_segment[1:]

蛇游戏中的碰撞检测

1 个答案: