Real Time Map Updating

[G_yoshi]

This idea just came to mind while I was working on my pw because I wanted to see how the land would look after I changed it, but I don't want to have to go through the time to get a new map generated. So I was thinking, maybe there could be a way to do real time map updating....that way, if I change the shape of the land, I could push a key to see the map. I think it also would be good to have a key that you press to see the map while you are in the editor so that you can see how it looks before you play the level.