def gridify(a, grid_num, offset):
interval = map_size / grid_num
b = Point(0,0)
b.x = int((a.x + offset.x) / interval)
b.y = int((a.y + offset.y) / interval)
if b.x == grid_num:
b.x = grid_num - 1 # Edge case
if b.y == grid_num:
b.y = grid_num - 1 # Edge case
return b
def degridify(a, offset, grid_num):
interval = map_size / grid_num
b = Point(0,0)
b.x = a.x * interval + (interval / 2.0) - offset.x
b.y = a.y * interval + (interval / 2.0) - offset.y
return b