- Fixed: Used the wrong actor's radius in P_Thing_Projectile() to get the maxdist for P_CheckMissileSpawn().

git-svn-id: http://mancubus.net/svn/hosted/zdoom/zdoom/trunk@4196 a95907f1-e10c-0410-b46f-9e587ccb1026
- Always at least halve the advance vector in P_CheckMissileSpawn().

git-svn-id: http://mancubus.net/svn/hosted/zdoom/zdoom/trunk@4197 a95907f1-e10c-0410-b46f-9e587ccb1026
- Fixed: Don't return false from PIT_CheckThing when a shootable missile hits a nonmonster and
  infighting is disabled; let the normal conditions apply. Otherwise, you end up with situations
  where monster-fired projectiles can collide with pickups.

git-svn-id: http://mancubus.net/svn/hosted/zdoom/zdoom/trunk@4198 a95907f1-e10c-0410-b46f-9e587ccb1026