Re: [pygame] Pixel Perfect collision suggestion.

["V. Karthik Kumar" <karthikkumar@xxxxxxxxx>]

Okay, I modified the code a little bit more. This takes care of the odd 
number of rows/columns in the intersection window.

I guess there shouldn't me any more changes in this.

Regards
def pp_collide(obj1,obj2):
     """If the function finds a collision it will return True
     if not it will return False.
     """
     rect1, rect2, hm1, hm2 = obj1.rect, obj2.rect, obj1.hitmask, obj2.hitmask
     if not rect1.colliderect(rect2):
         return False
     rect = rect1.clip(rect2)

     w, h, x1, y1, x2, y2 = rect.width, rect.height, rect.x-rect1.x, rect.y-rect1.y, rect.x-rect2.x, rect.y-rect2.y

     if w%2:
	for y in range(h):
               if hm1[x1+w-1][y1+y] and hm2[x2+w-1][y2+y]:
                       return True
	w=w-1

     if h%2:
	for x in range(w):
               if hm1[x1+x][y1+h-1] and hm2[x2+x][y2+h-1]:
                       return True
	h=h-1

     while w > 0 and h > 0:
       for x in range(w):
               if hm1[x1+x][y1] and hm2[x2+x][y2]:
                       return True
               if hm1[x1+x][y1+h-1] and hm2[x2+x][y2+h-1]:
                       return True
       for y in range(1, h-1):
               if hm1[x1][y1+y] and hm2[x2][y2+y]:
                       return True
               if hm1[x1+w-1][y1+y] and hm2[x2+w-1][y2+y]:
                       return True
       w, h, x1, y1, x2, y2 = w-2, h-2, x1+1, y1+1, x2+1, y2+1
     return False