- Dropped items with the DONTGIB flag set will no longer be destroyed by crushers.

git-svn-id: http://mancubus.net/svn/hosted/zdoom/zdoom/trunk@4215 a95907f1-e10c-0410-b46f-9e587ccb1026
- Fixed: Voxel rendering completely fell apart when a mirror came into view.

git-svn-id: http://mancubus.net/svn/hosted/zdoom/zdoom/trunk@4216 a95907f1-e10c-0410-b46f-9e587ccb1026
- Force all voxel mip levels so use the same pivot point as the first level.

git-svn-id: http://mancubus.net/svn/hosted/zdoom/zdoom/trunk@4217 a95907f1-e10c-0410-b46f-9e587ccb1026
- Added DONTGIB flag to Key, so key-dropping enemies can be used reliably near crushers.

git-svn-id: http://mancubus.net/svn/hosted/zdoom/zdoom/trunk@4218 a95907f1-e10c-0410-b46f-9e587ccb1026
- Fixed: When trying to unmorph a monster, make sure the morphed version doesn't have the
  TOUCHY flag set, or checking the position of the unmorphed version will kill the morphed
  version, since they will both exist in the same place at the same time, and TOUCHY is
  really touchy about that.

git-svn-id: http://mancubus.net/svn/hosted/zdoom/zdoom/trunk@4219 a95907f1-e10c-0410-b46f-9e587ccb1026
- Use tests less prone to overflow on very steep slopes when detecting which side of a plane
  the camera is on. Mostly, this means testing the distance of the camera to the plane rather
  than computing the plane's Z at the camera and comparing that with the camera's Z.

git-svn-id: http://mancubus.net/svn/hosted/zdoom/zdoom/trunk@4220 a95907f1-e10c-0410-b46f-9e587ccb1026