Comment on why we need overlapping collision rectangles.

Crawler/Crawler.cpp

@@ -1112,6 +1112,7 @@ geom2d::rect<int>Crawler::GetTileCollision(MapName map,vf2d pos,bool upperLevel)
 				if(foundRect.pos==NO_COLLISION.pos&&foundRect.size==NO_COLLISION.size){
 					foundRect=collisionRect;
 				}else{
+					//When we find another rectangle in the same square, we expand it to consume the area, whichever tile creates a larger surface or the combination of the two.
 					foundRect.pos.x=std::min(foundRect.pos.x,collisionRect.pos.x);
 					foundRect.pos.y=std::min(foundRect.pos.y,collisionRect.pos.y);
 					foundRect.size.x=std::max(foundRect.size.x,collisionRect.size.x);