It was easy to do: collision viewer.
The software is able to show (or hide these infos) the collisions on level. After this step I'll create the collision editor (another thing easy to do) and I'll resume the Emerald Hill in Megaman X, because it has bad collision on some points. I've do also a lot of internal changes on source code, improving a bit the performances and modulating more the entire editor. I hope to release soon the editor, I can't wait to see one of my favorite games with new levels/graphics and other interesting stuff!!!