[refactoring4]: SW: Unfriendly Skies softlock & broken booby traps

[sinisterseed]

This being MAP13.

Shortly after the start, there's an explosion near a wall that must occur in the second room, with the pachinko machines, granting the player acces to the red keycard.

However, this never actually happens, rendering the map unbeatable. Various traps on the map are also broken, such as in the first room, the one with the computer screens, which is supposed to have bombs triggering as you enter it, in addition to a Betty Mine between the screens, but none of these is ever triggered anymore.

[sinisterseed]

It should look life this:

https://www.youtube.com/watch?v=q5BLjLorTJE

[Graf Zahl]

This level exposed a major issue with FAFcansee using hitscan to find portals. Better hit point detection made the problem very apparent, the low precision in the original integer code was often enough to let it pass. A workaround was added.