所以我有一个箭头作为图像。从外观上看,它似乎围绕着中心旋转。但是当它旋转时,无论哪种方式,当它在每边大约 75 度的角度时都会出现错误: ValueError: subsurface rectangle outside surface area
我不确定问题是什么,我从 pygames 网站获得了旋转功能。如果有人知道问题出在哪里,我将非常感谢您的帮助。这是代码:
screen = pygame.display.set_mode(ss)
arrow = pygame.image.load("obj.png").convert_alpha()
x = 400
y= 300
a = 0
turn = 2
def rot_center(image, angle):
"""rotate an image while keeping its center and size"""
orig_rect = image.get_rect()
rot_image = pygame.transform.rotate(image, angle)
rot_rect = orig_rect.copy()
rot_rect.center = rot_image.get_rect().center
rot_image = rot_image.subsurface(rot_rect).copy()
return rot_image
while True:
screen.fill((255, 255, 255))
if turn == 1:
a += 10
if turn == 2:
a -=10
if a == 90:
turn = 2
if a == -90:
turn = 1
rotarrow = rot_center(arrow, a)
screen.blit(rotarrow, (x, y))
pygame.display.update()
sleep(0.1)