I don't feel like messing with in game leaderboards at the moment. I'll
leave the scoring in so that it can be added in the future. For now the
community leaderboards will have to suffice.
Vertical coridoors before level 4 wouldn't leave enough space to place
4 traps since there is only 10 rows of tiles eligible for a trap and
every trap ocupies 3 rows and requires at least 2 spare rows. This could
cause an infinite loop situation.
* Also fixes linux build warnings and other stuff.
Linus Probert