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I am trying to find the point where a line collides with a brick in the arkanoid that i am making. The most logical way i found is getting the mask from the line and use collidemask as it returns the point. Well as i tried with this: 

linemask = pygame.mask.from_surface(pygame.draw.line(screen, (0,0,0), bola.line[0], bola.line[1], 2))

it gave me this error:

TypeError: argument 1 must be pygame.Surface, not pygame.Rect

meaning that the input(in this case the line) can't be a rect but needs to be a surface. Do you know how to get the surface from a rect or any alternative solution ?

Marcos
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Elias Carlos Morales Heinke
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1 Answers1

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pygame.draw.line draws on a Surface and returns the affected area in form of a Rect object.

The Surface you drew on is screen. So it's screen you want to create a mask from. Alternatively, create a new Surface that you use pygame.draw on and create a mask from it. Or create a mask from the subsurface of the screen (so you don't have to create a mask from the whole screen), like this:

rect = pygame.draw.line(screen, (0,0,0), bola.line[0], bola.line[1], 2)
surface = screen.subsurface(rect)
mask = pygame.mask.from_surface(surface)
Ted Klein Bergman
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