Sets the sprite scale as an absolute multiple of its original size. For example a scale value of 2 would double the sprite's size whilst a value of 1 will return it to its original size. This function scales from the top left corner so any increase in size will keep the top and left sides stationary whilst the bottom and right sides move. The sprites center of rotation (its current offset point) will scale with the sprite. To scale from the offset point use SetSpriteScaleByOffset.
SetSpriteScale( iSpriteIndex, x, y )