Make launcherX use multiple ammo sources

src/Dodge/Bullet.hs

@@ -56,11 +56,8 @@ updateBulVel bt = case _buTrajectory bt of
   where
     t = _buTimer bt
 
--- should be made safe?
--- should be renamed to shootBullet or something
 shootBullet :: [Item] -> Item -> Creature -> World -> World
 shootBullet ams it cr w = fromMaybe (error "cannot find bullet ammo when expected to") $ do
-    invid <- it ^? itLocation . ipInvID
     thebullet <- ams ^? ix 0 . itUse . amagParams . ampBullet
     return $ w & cWorld . lWorld . instantBullets
         .:~ ( thebullet