- implemented per-sidedef texture scaling for GL renderer.

Update to ZDoom r1648:

- added Gez's infinite ammo powerup and random spawner fix patches.
- reduced size of Hexen's flames to fix bug in Deathkings MAP01.
- added checks for sidedef scaling values 
- Added Karate Chris's poison cloud fix.
- Added per-tier texture scaling with these new UDMF sidedef properties:
  * scalex_top
  * scaley_top
  * scalex_mid
  * scaley_mid
  * scalex_bottom
  * scalex_bottom
- Added sidedef versions of the linedef flags wrapmidtex and clipmidtex (via
  UDMF; names are the same). If the flag is set on the line, it applies to
  both sides. Otherwise, each side can control them individually.


git-svn-id: http://mancubus.net/svn/hosted/gzdoom/trunk@340 b0f79afe-0144-0410-b225-9a4edf0717df

src/g_shared/a_randomspawner.cpp

@@ -29,7 +29,6 @@ class ARandomSpawner : public AActor
 		int n=0;
 
 		Super::PostBeginPlay();
-
 		drop = di = GetDropItems();
 		if (di != NULL)
 		{
@@ -52,7 +51,7 @@ class ARandomSpawner : public AActor
 				if (di->Name != NAME_None)
 				{
 					n -= di->amount;
-					if (di->Next != NULL) di = di->Next; else n=0;
+					if ((di->Next != NULL) && (n > -1)) di = di->Next; else n = -1;
 				}
 			}
 			// So now we can spawn the dropped item.
@@ -81,6 +80,22 @@ class ARandomSpawner : public AActor
 				newmobj->tracer = tracer;
 				newmobj->CopyFriendliness(this, false);
 				if (!(flags & MF_DROPPED)) newmobj->flags &= ~MF_DROPPED;
+
+				// Handle special altitude flags
+				if (newmobj->flags & MF_SPAWNCEILING)
+				{
+					newmobj->z = newmobj->ceilingz - newmobj->height;
+				}
+				else if (newmobj->flags2 & MF2_SPAWNFLOAT) 
+				{
+					fixed_t space = newmobj->ceilingz - newmobj->height - newmobj->floorz;
+					if (space > 48*FRACUNIT)
+					{
+						space -= 40*FRACUNIT;
+						newmobj->z = MulScale8 (space, pr_randomspawn()) + newmobj->floorz + 40*FRACUNIT;
+					}
+				}
+
 				// Special1 is used to count how many recursions we're in.
 				if (newmobj->IsKindOf(PClass::FindClass("RandomSpawner")))
 					newmobj->special1 = ++special1;