Update to ZDoom r1662:

- Added ML_BLOCKUSE line flag, accessible through UDMF and Line_SetBlocking.
- Fixed handling of embedded WADs.
- Added Gez's A_CheckCeiling submission.
- Fixed: AM_NewResolution crashed when called from outside a level.
- Added support for Quake PAK files.
- Improved warning messages for WAD files with incorrect marker usage.
- complete restructuring of resource file handling for more flexibility and future
  extensions.
- Removed merging of special namespaces. For the texture manager this has
  become totally useless so there is no need to do this anymore. Not merging
  the namespaces also allows a much more reliable detection of lumps belonging
  to special namespaces so the ScanForFlatHack function is no longer needed.
  Instead, any lump up to F_END with a length of 4096 will be marked for 
  inclusion as a flat texture if no F_START marker is found.
- fixed MustConfirm parsing in MAPINFO
- Made the counting of intermission stats in Doom a GAMEINFO option so that
  it can be activated in all games.


git-svn-id: http://mancubus.net/svn/hosted/gzdoom/trunk@324 b0f79afe-0144-0410-b225-9a4edf0717df

src/thingdef/thingdef_codeptr.cpp

@@ -1965,6 +1965,25 @@ DEFINE_ACTION_FUNCTION_PARAMS(AActor, A_CheckFloor)
 
 }
 
+//===========================================================================
+//
+// A_CheckCeiling
+// [GZ] Totally copied on A_CheckFloor, jumps if actor touches ceiling
+//
+//===========================================================================
+DEFINE_ACTION_FUNCTION_PARAMS(AActor, A_CheckCeiling)
+{
+	ACTION_PARAM_START(1);
+	ACTION_PARAM_STATE(jump, 0);
+
+	ACTION_SET_RESULT(false);
+	if (self->z+self->height >= self->ceilingz) // Height needs to be counted
+	{
+		ACTION_JUMP(jump);
+	}
+
+}
+
 //===========================================================================
 //
 // A_Stop