我开发了2D平台游戏和物理工作 . 但是，在我看来，玩家的矩形碰撞检查看起来过载，因为它使用世界对象穿过整个数组3次 . 是否可以优化代码并减少通过量？
# First iteration: checks collisions on x-axis
self.rect.left += self.x_vel
self.__check_collisions(objects, 'X')
# Second: y-axis
self.rect.top += self.y_vel
self.onground = False
self.__check_collisions(objects, 'Y')
# Third: checks if player is on the ground. When two rects contacts but
# not intersects, colliderect doesn't consider it as a collide, and
# y_vel will increase on the ground. This shouldn't happen.
for obj in objects:
if pg.Rect(self.rect.x, self.rect.y + 1, self.size[0],
self.size[1]).colliderect(obj.rect):
self.onground = True
self.y_vel = 0
__check_collisions函数：
for obj in objects:
if pg.Rect.colliderect(self.rect, obj.rect):
if direction == 'X':
if self.x_vel > 0:
self.rect.right = obj.rect.left
self.x_vel = 0
if self.x_vel < 0:
self.rect.left = obj.rect.right
self.x_vel = 0
elif direction == 'Y':
if self.y_vel > 0:
self.onground = True
self.rect.bottom = obj.rect.top
self.y_vel = 0
if self.y_vel < 0:
self.rect.top = obj.rect.bottom
self.y_vel = - self.y_vel / 2