PyGame 与 sprite.spritecollide 和 collide_rect 发生冲突
Collision in PyGame with sprite.spritecollide and collide_rect
我正在练习 Pygame，尝试学习 类、对象等的一些基本用法
现在我正在 http://programarcadegames.com/
的帮助下制作一个基本的平台游戏
我有精灵播放器和精灵平台。这些平台也可以是 MovingPlatforms，它应该在碰撞时移动玩家，但是当玩家移动到其他平台时会发生一些奇怪的传送，我现在没能看到问题。
基本上玩家在被推时并没有被逻辑地移动（至少对我而言）。
非常感谢您的帮助！下面是玩家精灵和平台精灵的代码。它们应该包含任何形式的碰撞。如果有人想要运行它也是完整的代码（只需要任何“background.jpg”图像文件）
玩家精灵：
class Player(pygame.sprite.Sprite):
def __init__(self):
super().__init__()
self.player_width = 25
self.player_height = 50
self.image = pygame.Surface([self.player_width,self.player_height])
self.image.fill([255,0,0])
self.rect = self.image.get_rect()
self.change_x = 0
self.change_y = 0
self.double_jump = 0
self.level = None
def update(self):
self.calc_gravity()
self.rect.x += self.change_x
collision_list = pygame.sprite.spritecollide(self, self.level.platform_list, False)
for platform in collision_list:
if self.change_x > 0:
self.rect.right = platform.rect.left
elif self.change_x < 0:
self.rect.left = platform.rect.right
self.rect.y += self.change_y
collision_list = pygame.sprite.spritecollide(self, self.level.platform_list, False)
for platform in collision_list:
if self.change_y > 0:
self.rect.bottom = platform.rect.top
self.double_jump = 0
elif self.change_y < 0:
self.rect.top = platform.rect.bottom
self.change_y = 0
def calc_gravity(self):
if self.change_y == 0:
self.change_y = 2
else:
self.change_y += 0.35
if self.rect.y >= screen_height - self.player_height - 32 and self.change_y >= 0:
self.change_y = 0
self.rect.y = screen_height - self.player_height - 32
平台和移动平台精灵：
class Platform(pygame.sprite.Sprite):
def __init__(self, width, height):
super().__init__()
self.image = pygame.Surface([width, height])
self.image.fill([173,255,47])
self.rect = self.image.get_rect()
class MovingPlatform(Platform):
change_x = 0
change_y = 0
boundary_top = 0
boundary_bottom = 0
boundary_left = 0
boundary_right = 0
def update(self):
self.rect.x += self.change_x
hit = pygame.sprite.collide_rect(self, self.player)
if hit:
if self.change_x < 0:
self.player.rect.right = self.rect.left
elif self.change_x > 0:
self.player.rect.left = self.rect.right
self.rect.y += self.change_y
hit = pygame.sprite.collide_rect(self, self.player)
if hit:
if self.change_y < 0:
self.player.rect.bottom = self.rect.top
else:
self.player.rect.top = self.rect.bottom
if self.rect.bottom >= self.boundary_bottom or self.rect.top <= self.boundary_top:
self.change_y *= -1
cur_pos = self.rect.x - self.level.world_shift
if cur_pos < self.boundary_left or cur_pos > self.boundary_right:
self.change_x *= -1
完整代码：
import pygame
screen_width = 800
screen_height = 600
class Player(pygame.sprite.Sprite):
def __init__(self):
super().__init__()
self.player_width = 25
self.player_height = 50
self.image = pygame.Surface([self.player_width,self.player_height])
self.image.fill([255,0,0])
self.rect = self.image.get_rect()
self.change_x = 0
self.change_y = 0
self.double_jump = 0
self.level = None
def update(self):
self.calc_gravity()
self.rect.x += self.change_x
collision_list = pygame.sprite.spritecollide(self, self.level.platform_list, False)
for platform in collision_list:
if self.change_x > 0:
self.rect.right = platform.rect.left
elif self.change_x < 0:
self.rect.left = platform.rect.right
self.rect.y += self.change_y
collision_list = pygame.sprite.spritecollide(self, self.level.platform_list, False)
for platform in collision_list:
if self.change_y > 0:
self.rect.bottom = platform.rect.top
self.double_jump = 0
elif self.change_y < 0:
self.rect.top = platform.rect.bottom
self.change_y = 0
def calc_gravity(self):
if self.change_y == 0:
self.change_y = 2
else:
self.change_y += 0.35
if self.rect.y >= screen_height - self.player_height - 32 and self.change_y >= 0:
self.change_y = 0
self.rect.y = screen_height - self.player_height - 32
self.double_jump = 0
def jump(self):
self.rect.y += 2
collision_list = pygame.sprite.spritecollide(self, self.level.platform_list, False)
self.rect.y -= 2
if len(collision_list) > 0 or self.rect.bottom >= screen_height - 32:
self.change_y = -10
elif self.double_jump == 0:
self.change_y = -10
self.double_jump = 1
def go_left(self):
self.change_x = -5
def go_right(self):
self.change_x = 5
def stop(self):
self.change_x = 0
class Platform(pygame.sprite.Sprite):
def __init__(self, width, height):
super().__init__()
self.image = pygame.Surface([width, height])
self.image.fill([173,255,47])
self.rect = self.image.get_rect()
class MovingPlatform(Platform):
change_x = 0
change_y = 0
boundary_top = 0
boundary_bottom = 0
boundary_left = 0
boundary_right = 0
def update(self):
self.rect.x += self.change_x
hit = pygame.sprite.collide_rect(self, self.player)
if hit:
if self.change_x < 0:
self.player.rect.right = self.rect.left
elif self.change_x > 0:
self.player.rect.left = self.rect.right
self.rect.y += self.change_y
hit = pygame.sprite.collide_rect(self, self.player)
if hit:
if self.change_y < 0:
self.player.rect.bottom = self.rect.top
else:
self.player.rect.top = self.rect.bottom
if self.rect.bottom >= self.boundary_bottom or self.rect.top <= self.boundary_top:
self.change_y *= -1
cur_pos = self.rect.x - self.level.world_shift
if cur_pos < self.boundary_left or cur_pos > self.boundary_right:
self.change_x *= -1
class Level():
def __init__(self, player):
self.platform_list = pygame.sprite.Group()
self.player = player
self.world_shift = 0
def update(self):
self.platform_list.update()
def draw(self, screen, background):
screen.blit(background, [0,0])
self.platform_list.draw(screen)
def shift_world(self, shift_x):
self.world_shift += shift_x
for platform in self.platform_list:
platform.rect.x += shift_x
class Level_01(Level):
def __init__(self, player):
Level.__init__(self, player)
self.level_limit = -140
level = [[200, 25, 500, 500],
[100, 25, 100, 300]
]
for platform in level:
block = Platform(platform[0], platform[1])
block.rect.x = platform[2]
block.rect.y = platform[3]
block.player = self.player
self.platform_list.add(block)
block = MovingPlatform(150, 25)
block.rect.x = 200
block.rect.y = 300
block.boundary_top = 0
block.boundary_bottom = screen_height - 30
block.change_y = 1
block.player = self.player
block.level = self
self.platform_list.add(block)
block = MovingPlatform(150, 25)
block.rect.x = 100
block.rect.y = 350
block.boundary_left = 0
block.boundary_right = 600
block.change_x = 2
block.player = self.player
block.level = self
self.platform_list.add(block)
class Level_02(Level):
def __init__(self, player):
Level.__init__(self, player)
self.level_limit = -1000
level = [[200, 25, 500, 500],
[100, 25, 100, 100]
]
for platform in level:
block = Platform(platform[0], platform[1])
block.rect.x = platform[2]
block.rect.y = platform[3]
block.player = self.player
self.platform_list.add(block)
def main():
screen = pygame.display.set_mode([screen_width,screen_height])
clock = pygame.time.Clock()
done = False
background = pygame.image.load("background.jpg")
background = pygame.transform.scale(background, [800,600])
camera_left = 250
camera_right = 550
active_sprite_list = pygame.sprite.Group()
player = Player()
level_list =[]
level_list.append(Level_01(player))
level_list.append(Level_02(player))
current_level_no = 0
current_level = level_list[current_level_no]
player.level = current_level
player.rect.x = 100
player.rect.y = screen_height - player.player_height - 25
active_sprite_list.add(player)
while not done:
for event in pygame.event.get():
if event.type == pygame.QUIT:
done = True
#---Key presses---
if event.type == pygame.KEYDOWN:
if event.key == pygame.K_a:
player.go_left()
elif event.key == pygame.K_d:
player.go_right()
elif event.key == pygame.K_SPACE:
player.jump()
elif event.type == pygame.KEYUP:
if event.key == pygame.K_a and player.change_x < 0:
player.stop()
elif event.key == pygame.K_d and player.change_x > 0:
player.stop()
#---Move camera---
if player.rect.left <= camera_left:
diff = camera_left - player.rect.left
player.rect.left = camera_left
current_level.shift_world(diff)
if player.rect.right >= camera_right:
diff = player.rect.right - camera_right
player.rect.right = camera_right
current_level.shift_world(-diff)
#---Change level---
current_position = player.rect.x + current_level.world_shift
if current_position < current_level.level_limit:
player.rect.x = 120
if current_level_no < len(level_list)-1:
current_level_no += 1
current_level = level_list[current_level_no]
player.level = current_level
#---Update sprites---
current_level.update()
active_sprite_list.update()
#---Draw sprites---
current_level.draw(screen, background)
active_sprite_list.draw(screen)
clock.tick(60)
pygame.display.flip()
pygame.quit()
main()
问题与MovingPlatform.update有关：
class MovingPlatform(Platform):
# [...]
def update(self):
self.rect.x += self.change_x
hit = pygame.sprite.collide_rect(self, self.player)
if hit:
if self.change_x < 0:
self.player.rect.right = self.rect.left
elif self.change_x > 0:
self.player.rect.left = self.rect.right
# [...]
当玩家站在一个上下移动的平台上并撞到另一个平台时，玩家会在该平台的任一侧移动。
在询问如何解决问题之前，必须先询问在这种特定情况下应该发生什么。
一种可能的解决方案是简单地删除上面的代码：
或者，您可以添加一个附加条件来检查玩家是在平台的左侧还是右侧，但不在中间：
class MovingPlatform(Platform):
# [...]
def update(self):
self.rect.x += self.change_x
hit = pygame.sprite.collide_rect(self, self.player)
if hit:
if self.change_x < 0 and self.player.rect.left < self.rect.left:
self.player.rect.right = self.rect.left
elif self.change_x > 0 and self.player.rect.right > self.rect.right:
self.player.rect.left = self.rect.right
# [...]
但是，如果玩家被2个平台挤压，这并不能解决问题。
我正在练习 Pygame，尝试学习 类、对象等的一些基本用法
现在我正在 http://programarcadegames.com/
的帮助下制作一个基本的平台游戏我有精灵播放器和精灵平台。这些平台也可以是 MovingPlatforms，它应该在碰撞时移动玩家，但是当玩家移动到其他平台时会发生一些奇怪的传送，我现在没能看到问题。
基本上玩家在被推时并没有被逻辑地移动（至少对我而言）。
非常感谢您的帮助！下面是玩家精灵和平台精灵的代码。它们应该包含任何形式的碰撞。如果有人想要运行它也是完整的代码（只需要任何“background.jpg”图像文件）
玩家精灵：
class Player(pygame.sprite.Sprite):
def __init__(self):
super().__init__()
self.player_width = 25
self.player_height = 50
self.image = pygame.Surface([self.player_width,self.player_height])
self.image.fill([255,0,0])
self.rect = self.image.get_rect()
self.change_x = 0
self.change_y = 0
self.double_jump = 0
self.level = None
def update(self):
self.calc_gravity()
self.rect.x += self.change_x
collision_list = pygame.sprite.spritecollide(self, self.level.platform_list, False)
for platform in collision_list:
if self.change_x > 0:
self.rect.right = platform.rect.left
elif self.change_x < 0:
self.rect.left = platform.rect.right
self.rect.y += self.change_y
collision_list = pygame.sprite.spritecollide(self, self.level.platform_list, False)
for platform in collision_list:
if self.change_y > 0:
self.rect.bottom = platform.rect.top
self.double_jump = 0
elif self.change_y < 0:
self.rect.top = platform.rect.bottom
self.change_y = 0
def calc_gravity(self):
if self.change_y == 0:
self.change_y = 2
else:
self.change_y += 0.35
if self.rect.y >= screen_height - self.player_height - 32 and self.change_y >= 0:
self.change_y = 0
self.rect.y = screen_height - self.player_height - 32
平台和移动平台精灵：
class Platform(pygame.sprite.Sprite):
def __init__(self, width, height):
super().__init__()
self.image = pygame.Surface([width, height])
self.image.fill([173,255,47])
self.rect = self.image.get_rect()
class MovingPlatform(Platform):
change_x = 0
change_y = 0
boundary_top = 0
boundary_bottom = 0
boundary_left = 0
boundary_right = 0
def update(self):
self.rect.x += self.change_x
hit = pygame.sprite.collide_rect(self, self.player)
if hit:
if self.change_x < 0:
self.player.rect.right = self.rect.left
elif self.change_x > 0:
self.player.rect.left = self.rect.right
self.rect.y += self.change_y
hit = pygame.sprite.collide_rect(self, self.player)
if hit:
if self.change_y < 0:
self.player.rect.bottom = self.rect.top
else:
self.player.rect.top = self.rect.bottom
if self.rect.bottom >= self.boundary_bottom or self.rect.top <= self.boundary_top:
self.change_y *= -1
cur_pos = self.rect.x - self.level.world_shift
if cur_pos < self.boundary_left or cur_pos > self.boundary_right:
self.change_x *= -1
完整代码：
import pygame
screen_width = 800
screen_height = 600
class Player(pygame.sprite.Sprite):
def __init__(self):
super().__init__()
self.player_width = 25
self.player_height = 50
self.image = pygame.Surface([self.player_width,self.player_height])
self.image.fill([255,0,0])
self.rect = self.image.get_rect()
self.change_x = 0
self.change_y = 0
self.double_jump = 0
self.level = None
def update(self):
self.calc_gravity()
self.rect.x += self.change_x
collision_list = pygame.sprite.spritecollide(self, self.level.platform_list, False)
for platform in collision_list:
if self.change_x > 0:
self.rect.right = platform.rect.left
elif self.change_x < 0:
self.rect.left = platform.rect.right
self.rect.y += self.change_y
collision_list = pygame.sprite.spritecollide(self, self.level.platform_list, False)
for platform in collision_list:
if self.change_y > 0:
self.rect.bottom = platform.rect.top
self.double_jump = 0
elif self.change_y < 0:
self.rect.top = platform.rect.bottom
self.change_y = 0
def calc_gravity(self):
if self.change_y == 0:
self.change_y = 2
else:
self.change_y += 0.35
if self.rect.y >= screen_height - self.player_height - 32 and self.change_y >= 0:
self.change_y = 0
self.rect.y = screen_height - self.player_height - 32
self.double_jump = 0
def jump(self):
self.rect.y += 2
collision_list = pygame.sprite.spritecollide(self, self.level.platform_list, False)
self.rect.y -= 2
if len(collision_list) > 0 or self.rect.bottom >= screen_height - 32:
self.change_y = -10
elif self.double_jump == 0:
self.change_y = -10
self.double_jump = 1
def go_left(self):
self.change_x = -5
def go_right(self):
self.change_x = 5
def stop(self):
self.change_x = 0
class Platform(pygame.sprite.Sprite):
def __init__(self, width, height):
super().__init__()
self.image = pygame.Surface([width, height])
self.image.fill([173,255,47])
self.rect = self.image.get_rect()
class MovingPlatform(Platform):
change_x = 0
change_y = 0
boundary_top = 0
boundary_bottom = 0
boundary_left = 0
boundary_right = 0
def update(self):
self.rect.x += self.change_x
hit = pygame.sprite.collide_rect(self, self.player)
if hit:
if self.change_x < 0:
self.player.rect.right = self.rect.left
elif self.change_x > 0:
self.player.rect.left = self.rect.right
self.rect.y += self.change_y
hit = pygame.sprite.collide_rect(self, self.player)
if hit:
if self.change_y < 0:
self.player.rect.bottom = self.rect.top
else:
self.player.rect.top = self.rect.bottom
if self.rect.bottom >= self.boundary_bottom or self.rect.top <= self.boundary_top:
self.change_y *= -1
cur_pos = self.rect.x - self.level.world_shift
if cur_pos < self.boundary_left or cur_pos > self.boundary_right:
self.change_x *= -1
class Level():
def __init__(self, player):
self.platform_list = pygame.sprite.Group()
self.player = player
self.world_shift = 0
def update(self):
self.platform_list.update()
def draw(self, screen, background):
screen.blit(background, [0,0])
self.platform_list.draw(screen)
def shift_world(self, shift_x):
self.world_shift += shift_x
for platform in self.platform_list:
platform.rect.x += shift_x
class Level_01(Level):
def __init__(self, player):
Level.__init__(self, player)
self.level_limit = -140
level = [[200, 25, 500, 500],
[100, 25, 100, 300]
]
for platform in level:
block = Platform(platform[0], platform[1])
block.rect.x = platform[2]
block.rect.y = platform[3]
block.player = self.player
self.platform_list.add(block)
block = MovingPlatform(150, 25)
block.rect.x = 200
block.rect.y = 300
block.boundary_top = 0
block.boundary_bottom = screen_height - 30
block.change_y = 1
block.player = self.player
block.level = self
self.platform_list.add(block)
block = MovingPlatform(150, 25)
block.rect.x = 100
block.rect.y = 350
block.boundary_left = 0
block.boundary_right = 600
block.change_x = 2
block.player = self.player
block.level = self
self.platform_list.add(block)
class Level_02(Level):
def __init__(self, player):
Level.__init__(self, player)
self.level_limit = -1000
level = [[200, 25, 500, 500],
[100, 25, 100, 100]
]
for platform in level:
block = Platform(platform[0], platform[1])
block.rect.x = platform[2]
block.rect.y = platform[3]
block.player = self.player
self.platform_list.add(block)
def main():
screen = pygame.display.set_mode([screen_width,screen_height])
clock = pygame.time.Clock()
done = False
background = pygame.image.load("background.jpg")
background = pygame.transform.scale(background, [800,600])
camera_left = 250
camera_right = 550
active_sprite_list = pygame.sprite.Group()
player = Player()
level_list =[]
level_list.append(Level_01(player))
level_list.append(Level_02(player))
current_level_no = 0
current_level = level_list[current_level_no]
player.level = current_level
player.rect.x = 100
player.rect.y = screen_height - player.player_height - 25
active_sprite_list.add(player)
while not done:
for event in pygame.event.get():
if event.type == pygame.QUIT:
done = True
#---Key presses---
if event.type == pygame.KEYDOWN:
if event.key == pygame.K_a:
player.go_left()
elif event.key == pygame.K_d:
player.go_right()
elif event.key == pygame.K_SPACE:
player.jump()
elif event.type == pygame.KEYUP:
if event.key == pygame.K_a and player.change_x < 0:
player.stop()
elif event.key == pygame.K_d and player.change_x > 0:
player.stop()
#---Move camera---
if player.rect.left <= camera_left:
diff = camera_left - player.rect.left
player.rect.left = camera_left
current_level.shift_world(diff)
if player.rect.right >= camera_right:
diff = player.rect.right - camera_right
player.rect.right = camera_right
current_level.shift_world(-diff)
#---Change level---
current_position = player.rect.x + current_level.world_shift
if current_position < current_level.level_limit:
player.rect.x = 120
if current_level_no < len(level_list)-1:
current_level_no += 1
current_level = level_list[current_level_no]
player.level = current_level
#---Update sprites---
current_level.update()
active_sprite_list.update()
#---Draw sprites---
current_level.draw(screen, background)
active_sprite_list.draw(screen)
clock.tick(60)
pygame.display.flip()
pygame.quit()
main()
问题与MovingPlatform.update有关：
class MovingPlatform(Platform): # [...] def update(self): self.rect.x += self.change_x hit = pygame.sprite.collide_rect(self, self.player) if hit: if self.change_x < 0: self.player.rect.right = self.rect.left elif self.change_x > 0: self.player.rect.left = self.rect.right # [...]
当玩家站在一个上下移动的平台上并撞到另一个平台时，玩家会在该平台的任一侧移动。
在询问如何解决问题之前，必须先询问在这种特定情况下应该发生什么。
一种可能的解决方案是简单地删除上面的代码：
或者，您可以添加一个附加条件来检查玩家是在平台的左侧还是右侧，但不在中间：
class MovingPlatform(Platform):
# [...]
def update(self):
self.rect.x += self.change_x
hit = pygame.sprite.collide_rect(self, self.player)
if hit:
if self.change_x < 0 and self.player.rect.left < self.rect.left:
self.player.rect.right = self.rect.left
elif self.change_x > 0 and self.player.rect.right > self.rect.right:
self.player.rect.left = self.rect.right
# [...]
但是，如果玩家被2个平台挤压，这并不能解决问题。