Co-op support

I have designed an area using the instant teleport to create a pseudo 3d appearance, but it might look a bit screwy in co-op (people dissapearing on stairs etc). Is this a problem?

Maybe you could make it so that you can't access this area in co-op, and instead a different area is opened up.

This would be quite simple to do, just put the player 2 start in a room that's not accesible in single player, and have door close/ceiling lower/floor raise walkover linedefs in it to close off the single player area, and door open/ceiling raise/floor lower walkover linedefs in it to open up the co-op area.

Yeah it's a possibility, but I think i'll just make something a bit more linear.

I think we should avoid too many special trick features, and only use the extra freedom of detail complexity and linedef specials Boom provides.