ani_load
Load an animation from an image
Arguments:
tv -- vid to load into
name -- prefix name to give the images
image -- image to load anis from
size -- w,h size of image
shape -- shape of image (usually a subset of 0,0,w,h) used for collision detection
parts -- list of parts to divide the animation into
for example parts = [4,5] would yield 4 animations 5 frames long, 20 total
for example parts = [a,b,c] would yield ... images['name.a.b.c'] ..., a*b*c total