[英]Platformer Collision in Pygame
我試圖在Pygame中編寫平台游戲,但是在過去的幾周里,我一直被困在英雄與平台之間的碰撞檢測上。 這是我的課程:
class Platform(object):
def __init__(self, colour, rect):
self.colour = colour
self.rect = rect
def draw(self, screen):
pygame.draw.rect(screen, self.colour, self.rect)
class Character(Block):
def __init__(self, colour, rect, speed):
super().__init__(colour, rect)
(self.dx, self.dy) = speed
self.is_falling = True
def update(self, platforms):
self.is_falling = True
for platform in platforms:
if self.is_on(platform):
self.rect.bottom = platform.rect.top
self.dy = 0
self.is_falling = False
if self.is_falling:
self.gravity()
self.rect.x += self.dx
self.rect.y += self.dy
def is_on(self, platform):
return (pygame.Rect(self.rect.x, self.rect.y + self.dy,
self.rect.width, self.rect.height)
.colliderect(platform.rect) and self.dy > 0)
def left(self):
self.dx = -5
def right(self):
self.dx = 5
def stop_x(self):
self.dx = 0
def jump(self):
if self.dy == 0:
self.dy = -25
def gravity(self):
self.dy += 5
這是我的功能:
def key_down(event, character):
if event.key == pygame.K_LEFT:
character.left()
elif event.key == pygame.K_RIGHT:
character.right()
elif event.key == pygame.K_UP:
character.jump()
def key_up(event, character):
if event.key in (pygame.K_LEFT, pygame.K_RIGHT):
character.stop_x()
def main():
pygame.init()
screen = pygame.display.set_mode((640, 480))
pygame.display.set_caption("PyPlatformer")
hero = Character((255, 255, 0), pygame.Rect(100, 0, 20, 20), (0, 0))
platform1 = Block((0, 255, 255), pygame.Rect(100, 100, 100, 10))
platform2 = Block((0, 255, 255), pygame.Rect(150, 150, 100, 10))
platforms = (platform1, platform2)
clock = pygame.time.Clock()
while True:
clock.tick(60)
for event in pygame.event.get():
if event.type == pygame.QUIT:
pygame.quit()
sys.exit()
elif event.type == pygame.KEYDOWN:
key_down(event, hero)
elif event.type == pygame.KEYUP:
key_up(event, hero)
screen.fill((0, 0, 0))
hero.update(platforms)
[platform.draw(screen) for platform in platforms]
hero.draw(screen)
pygame.display.update()
但是,當Character
坐在Block
,碰撞檢測失敗,並且角色掉落在方塊上。 但是,當它在塊中移動時,檢測成功,角色回到坐在塊上。 然后重復此循環,角色看起來像在塊上彈跳。
是什么導致此錯誤? 我如何解決它?
這個版本適合我:
def is_on(self, platform):
return (pygame.Rect(self.rect.x, self.rect.y + self.dy+1, # +1
self.rect.width, self.rect.height)
.colliderect(platform.rect))
我加+1
並刪除dy > 0
順便說一句:我發現了其他問題。
如果平台離得太近(請參閱platform2
128
)
platform1 = Block((0, 255, 255), pygame.Rect(100, 100, 100, 10))
platform2 = Block((0, 255, 255), pygame.Rect(150, 128, 100, 10)) # 128
站在platform2
上的玩家可以觸摸platform1
並且他在platform1
上移動
它可以使我真正感動:)
platforms = []
platforms.append(Block((0, 255, 255), pygame.Rect(100, 400, 100, 10)))
platforms.append(Block((0, 255, 255), pygame.Rect(150, 428, 100, 10)))
platforms.append(Block((0, 255, 255), pygame.Rect(250, 28, 10, 400)))
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