Open issues:
- grep for TODO and FIXME
- when shot origin is inside warpzone, vortex shot fails (and is even drawn in totally wrong direction). WHY? Possibly v_forward got lost?

Weapon support:

- blaster: YES
- shotgun: YES
- machinegun: YES
- mortar: YES
- electro: YES
- crylink: YES
- vortex: YES
- hagar: YES
- devastator: YES (except for trail bug)
- porto: YES (bwahahahaha)
- hlac: YES
- vaporizer: YES
- rifle: YES
- fireball: YES (BFG effect cannot work through warpzones by design, so it's not available through warpzones)
- hook: YES

- tuba: NO (sound)
