- Added MF5_MOVEWITHSECTOR flag, so you can have the benefits of MF_NOBLOCKMAP

but still have actors that will move up and down with the floor. IceChunk
  now uses both of these flags.


SVN r1536 (trunk)

src/actor.h

@@ -307,6 +307,7 @@ enum
 	MF5_CANTSEEK		= 0x10000000,	// seeker missiles cannot home in on this actor
 	MF5_INCONVERSATION	= 0x20000000,	// Actor is having a conversation
 	MF5_PAINLESS		= 0x40000000,	// Actor always inflicts painless damage.
+	MF5_MOVEWITHSECTOR	= 0x80000000,	// P_ChangeSector() will still process this actor if it has MF_NOBLOCKMAP
 
 
 // --- mobj.renderflags ---

src/p_map.cpp

@@ -4647,7 +4647,7 @@ bool P_ChangeSector (sector_t *sector, int crunch, int amt, int floorOrCeil, boo
 
 
 	// [RH] Use different functions for the four different types of sector
-	// movement. Also update the soundorg's z-coordinate for 3D sound.
+	// movement.
 	switch (floorOrCeil)
 	{
 	case 0:
@@ -4694,7 +4694,8 @@ bool P_ChangeSector (sector_t *sector, int crunch, int amt, int floorOrCeil, boo
 			if (!n->visited)								// unprocessed thing found
 			{
 				n->visited = true; 							// mark thing as processed
-				if (!(n->m_thing->flags & MF_NOBLOCKMAP))	//jff 4/7/98 don't do these
+				if (!(n->m_thing->flags & MF_NOBLOCKMAP) ||	//jff 4/7/98 don't do these
+					(n->m_thing->flags5 & MF5_MOVEWITHSECTOR))
 				{
 					iterator (n->m_thing, &cpos);		 			// process it
 					if (iterator2 != NULL) iterator2 (n->m_thing, &cpos);

src/thingdef/thingdef_data.cpp

@@ -208,6 +208,7 @@ static FFlagDef ActorFlags[]=
 	DEFINE_FLAG(MF5, BRIGHT, AActor, flags5),
 	DEFINE_FLAG(MF5, CANTSEEK, AActor, flags5),
 	DEFINE_FLAG(MF5, PAINLESS, AActor, flags5),
+	DEFINE_FLAG(MF5, MOVEWITHSECTOR, AActor, flags5),
 
 	// Effect flags
 	DEFINE_FLAG(FX, VISIBILITYPULSE, AActor, effects),