Changes

*Stairs are tile collision events that can interact with sprites. I think the game is programmed that Simon's x y coordinate can look onto the diagonal of the stair tile.

But every 8 pixel you can fall through if you jump toward the stairs. Tiles are square of 8*8 pixels. You can see the gap on this example very good.

It will also give you a idea on what pixels you have to watch out for. The jump close to the stair is a duck-jump since otherwise Simon will automatically hock to them.

You only lock automatically to stairs when they are on a edge so you can not simply walk off.

It will replace the frames where Simon has the legs close together when standing on a ledge.

Also jumping a few pixels after where you usually lock to them will result in getting higher up on the stair.

=== Stair Boss ===