检查图像和线条之间的碰撞

我检查碰撞：

offset = (x0 - x1, y0 - y1)
result = player1.mask.overlap(player2, offset)

它在两个图像之间工作。

但如果我想检查图像和pygame.draw.line(...) (I use it https://stackoverflow.com/questions/42317756/how-to-get-the-surface-from-a-rect-line/42318036#42318036用于从线创建蒙版）。mask.overlap回报None:

surface = self.gameDisplay.subsurface(pygame.draw.line(self.gameDisplay, colors.GREEN, [100, 100], [200, 200], 5))
line_mask = pygame.mask.from_surface(surface)
pygame.draw.line(self.gameDisplay, colors.GREEN, [100, 100], [200, 200], 5)

offset = (x0 - x1, y0 - y1)
result = player1.mask.overlap(mask, offset)

对不起我的英语不好。

您错过了通过以下方式创建具有每像素 alpha 的表面.convert_alpha() https://www.pygame.org/docs/ref/surface.html#pygame.Surface.convert_alpha，在从“线”曲面创建蒙版之前：

line_rect = pygame.draw.line(gameDisplay, colors.GREEN, [100, 100], [200, 200], 5)
line_surf = gameDisplay.subsurface(line_rect)
line_mask = pygame.mask.from_surface(line_surf.convert_alpha())

x0, y0 = line_rect.topleft
x1, y1 = player1.rect.topleft

offset = (x0 - x1, y0 - y1)
if player1.mask.overlap(line_mask, offset):
    print("hit : ", count)

See the example: repl.it/@Rabbid76/PyGame-PyGame-SurfaceLineMaskIntersect-1