Can someone give me some example code that creates a surface with a transparent background in pygame?
+4
A:
This should do it:
image = pygame.Surface([640,480], SRCALPHA, 32)
image = image.convert_alpha()
Make sure that the color depth (32) stays explicitly set else this will not work.
Unkwntech
2008-11-29 22:02:45
+1
A:
You can also give it a colorkey, much like GIF file transparency. This is the most common way to make sprites. The original bitmap has the artwork, and has a certain color as background that will not be drawn, which is the colorkey:
surf.set_colorkey((255,0,255)) // Sets the colorkey to that hideous purple
Surfaces that uses colorkey instead of alpha are a lot faster to blit since they don't require any blend math. The SDL surface uses a simple bitmask when it has a colorkey set, which blits practically without overhead.
Sir Oddfellow
2008-12-09 18:24:22