If the holes disappear, they must be sprites.
I think the easiest way to go about the hole sprites is to make an array of a suitable size (you can probably go up to some thousands). Stuff it up with handles for these sprites and then use them, starting out at one end. When you have used them all, go back to the first one. That way you will always use the oldest hole.
I think the easiest way to go about the hole sprites is to make an array of a suitable size (you can probably go up to some thousands). Stuff it up with handles for these sprites and then use them, starting out at one end. When you have used them all, go back to the first one. That way you will always use the oldest hole.