- Changed decorate replacement to be opt-in instead of opt-out. This allows for

greater flexibility in what can be replaced (replaced actors need not be ancestors
  of actors that replace them) at the expense of not having universal actor
  replacement. Instances where replacements work:
   - Line specials that spawn things (Thing_Spawn and related)
   - ACS spawning commands (SpawnSpot and the like)
   - Spawning mapthings at level load time in P_SpawnMapThing()
   - Spawning items off of dead dudes in P_DropItem()
   - The A_SpawnItem decorate function
   - The summon and summonfriend console commands
   - ThingCount will count both original actors and their replacements as the same
     things.
  TBD: Should the ACS inventory functions use replacements too, or not?


SVN r249 (trunk)

src/p_things.cpp

@@ -64,6 +64,10 @@ bool P_Thing_Spawn (int tid, int type, angle_t angle, bool fog, int newtid)
 	if ( (kind = SpawnableThings[type]) == NULL)
 		return false;
 
+	
+	// Handle decorate replacements.
+	kind = kind->ActorInfo->GetReplacement()->Class;
+
 	if ((GetDefaultByType (kind)->flags3 & MF3_ISMONSTER) && (dmflags & DF_NO_MONSTERS))
 		return false;
 
@@ -176,10 +180,14 @@ bool P_Thing_Projectile (int tid, int type, const char * type_name, angle_t angl
 	}
 	else
 	{
-		if ((kind = PClass::FindClass(type_name)) == NULL)
+		if ((kind = PClass::FindClass(type_name)) == NULL || kind->ActorInfo == NULL)
 			return false;
 	}
 
+
+	// Handle decorate replacements.
+	kind = kind->ActorInfo->GetReplacement()->Class;
+
 	defflags3 = GetDefaultByType (kind)->flags3;
 	if ((defflags3 & MF3_ISMONSTER) && (dmflags & DF_NO_MONSTERS))
 		return false;