Question

检查任何对象worker是否与其他类（包括Worker）的对象重叠的正确方法是什么？如果重叠，则应更改轨迹。 pygame中是否有任何内置函数？任何小例子，将不胜感激。

all_sprites = pygame.sprite.LayeredUpdates()
workers = pygame.sprite.Group()
machines = pygame.sprite.Group()
fences = pygame.sprite.Group()

# create multiple workers
for pos in ((30,30), (50, 400), (200, 100)):
    Worker("images/workers/worker_1.png", "images/workers/worker_2.png", pos, all_sprites, workers)

# create multiple machines
Crane("images/machines/excavator.png", (780,390), all_sprites, machines)

# create multiple geo-fences
for rect in (pygame.Rect(510,150,75,52), pygame.Rect(450,250,68,40)):
    GeoFence(rect, all_sprites, fences)

Answer 1

由于您已经使用了精灵和组，因此添加起来非常容易。

看看pygame.sprite.spritecollide。

我建议像您所说的那样，为所有应该改变轨迹的精灵创建一个组，然后在精灵的spritecollide函数中使用update来检查碰撞：

all_sprites = pygame.sprite.LayeredUpdates()
workers = pygame.sprite.Group()
machines = pygame.sprite.Group()
fences = pygame.sprite.Group()
objects = pygame.sprite.Group()

# create multiple workers
for pos in ((30,30), (50, 400), (200, 100)):
    Worker("images/workers/worker_1.png", "images/workers/worker_2.png", pos, all_sprites, workers, objects)

# create multiple machines
Crane("images/machines/excavator.png", (780,390), all_sprites, machines, objects)

# create multiple geo-fences
for rect in (pygame.Rect(510,150,75,52), pygame.Rect(450,250,68,40)):
    GeoFence(rect, all_sprites, fences, objects)

，并在Worker的更新方法中：

    # spritecollide returns a list of all sprites in the group that collide with
    # the given sprite, but if the sprite is in this very group itself, we have
    # to ignore a collision with itself
    if any(s for s in pygame.sprite.spritecollide(self, objects, False) if s != self):
        self.direction = self.direction * -1

如果您想要像素完美的碰撞（而不是基于rect的碰撞检测），可以确保将spritecollide属性设置为mask，将pygame.sprite.collide_mask作为第四个参数传递给x=["A", "B", "B", "C", "B", "A", "D", "D", "A", "B", "A", "D"]

如何检查对象的重叠？

1 个答案: