diff --git a/docs/rh-log.txt b/docs/rh-log.txt
index acc611620..2b3ace08f 100644
--- a/docs/rh-log.txt
+++ b/docs/rh-log.txt
@@ -1,3 +1,9 @@
+September 14, 2009  (Changes by Graf Zahl)
+- Added a few things from Gez's experimental build:
+  * Beta Lost Soul (added DoomEdNum 9037 to it)
+  * A_Mushroom extensions
+  * Vavoom compatible MAPINFO keynames.
+
 September 11, 2009
 - Added warning messages when loading maps that have non-zero values in
   unused line argument fields, because these maps could potentially break
diff --git a/src/d_player.h b/src/d_player.h
index 14ca80409..7c7becbe3 100644
--- a/src/d_player.h
+++ b/src/d_player.h
@@ -270,7 +270,7 @@ public:
 	// killough 10/98: used for realistic bobbing (i.e. not simply overall speed)
 	// mo->velx and mo->vely represent true velocity experienced by player.
 	// This only represents the thrust that the player applies himself.
-	// This avoids anomolies with such things as Boom ice and conveyors.
+	// This avoids anomalies with such things as Boom ice and conveyors.
 	fixed_t		velx, vely;				// killough 10/98
 
 	bool		centering;
diff --git a/src/g_doom/a_fatso.cpp b/src/g_doom/a_fatso.cpp
index feb476377..d641ebf72 100644
--- a/src/g_doom/a_fatso.cpp
+++ b/src/g_doom/a_fatso.cpp
@@ -124,12 +124,14 @@ DEFINE_ACTION_FUNCTION_PARAMS(AActor, A_Mushroom)
 {
 	int i, j;
 
-	ACTION_PARAM_START(3);
+	ACTION_PARAM_START(5);
 	ACTION_PARAM_CLASS(spawntype, 0);
 	ACTION_PARAM_INT(n, 1);
 	ACTION_PARAM_INT(flags, 2);
+	ACTION_PARAM_FIXED(vrange, 3);
+	ACTION_PARAM_FIXED(hrange, 4);
 
-	if (n == 0) n = self->GetMissileDamage (0, 1);
+	if (n == 0) n = self->Damage; // GetMissileDamage (0, 1);
 	if (spawntype == NULL) spawntype = PClass::FindClass("FatShot");
 
 	P_RadiusAttack (self, self->target, 128, 128, self->DamageType, true);
@@ -141,14 +143,14 @@ DEFINE_ACTION_FUNCTION_PARAMS(AActor, A_Mushroom)
 	// Now launch mushroom cloud
 	AActor *target = Spawn("Mapspot", 0, 0, 0, NO_REPLACE);	// We need something to aim at.
 	target->height = self->height;
-	for (i = -n; i <= n; i += 8)
+ 	for (i = -n; i <= n; i += 8)
 	{
-		for (j = -n; j <= n; j += 8)
+ 		for (j = -n; j <= n; j += 8)
 		{
 			AActor *mo;
-			target->x = self->x + (i << FRACBITS); // Aim in many directions from source
+			target->x = self->x + (i << FRACBITS);    // Aim in many directions from source
 			target->y = self->y + (j << FRACBITS);
-			target->z = self->z + (P_AproxDistance(i,j) << (FRACBITS+2)); // Aim up fairly high
+			target->z = self->z + (P_AproxDistance(i,j) * vrange); // Aim up fairly high
 			if (flags == 0 && (self->state->Misc1 == 0 || !(i_compatflags & COMPATF_MUSHROOM)))
 			{
 				mo = P_SpawnMissile (self, target, spawntype); // Launch fireball
@@ -158,10 +160,10 @@ DEFINE_ACTION_FUNCTION_PARAMS(AActor, A_Mushroom)
 				mo = P_OldSpawnMissile (self, target, spawntype); // Launch fireball
 			}
 			if (mo != NULL)
-			{
-				mo->velx >>= 1;
-				mo->vely >>= 1;				  // Slow it down a bit
-				mo->velz >>= 1;
+			{	// Slow it down a bit
+				mo->velx = FixedMul(mo->velx, hrange);
+				mo->vely = FixedMul(mo->vely, hrange);
+				mo->velz = FixedMul(mo->velz, hrange);
 				mo->flags &= ~MF_NOGRAVITY;   // Make debris fall under gravity
 			}
 		}
diff --git a/src/g_doom/a_lostsoul.cpp b/src/g_doom/a_lostsoul.cpp
index 46dec259b..c648afaba 100644
--- a/src/g_doom/a_lostsoul.cpp
+++ b/src/g_doom/a_lostsoul.cpp
@@ -13,6 +13,7 @@
 */
 
  FRandom pr_lost ("LostMissileRange");
+ FRandom pr_oldsoul ("BetaLostSoul");
 
 //
 // SkullAttack
@@ -54,6 +55,21 @@ DEFINE_ACTION_FUNCTION_PARAMS(AActor, A_SkullAttack)
 	A_SkullAttack(self, n);
 }
 
+
+
+DEFINE_ACTION_FUNCTION(AActor, A_BetaSkullAttack)
+{
+	int damage;
+	if (!self || !self->target || self->target->GetSpecies() == self->GetSpecies())
+		return;
+	S_Sound (self, CHAN_WEAPON, self->AttackSound, 1, ATTN_NORM);
+	A_FaceTarget(self);
+	damage = (pr_oldsoul()%8+1)*self->Damage;
+	P_DamageMobj(self->target, self, self, damage, NAME_None);
+}
+
+
+
 //==========================================================================
 //
 // CVAR transsouls
diff --git a/src/g_mapinfo.cpp b/src/g_mapinfo.cpp
index 68f9079c0..34b627736 100644
--- a/src/g_mapinfo.cpp
+++ b/src/g_mapinfo.cpp
@@ -947,6 +947,12 @@ DEFINE_MAP_OPTION(secretnext, true)
 	parse.ParseNextMap(info->secretmap);
 }
 
+DEFINE_MAP_OPTION(secret, true) // Just an alias for secretnext, for Vavoom compatibility
+{
+	parse.ParseAssign();
+	parse.ParseNextMap(info->secretmap);
+}
+
 DEFINE_MAP_OPTION(cluster, true)
 {
 	parse.ParseAssign();
@@ -998,6 +1004,14 @@ DEFINE_MAP_OPTION(sky2, true)
 	}
 }
 
+// Vavoom compatibility
+DEFINE_MAP_OPTION(skybox, true)
+{
+	parse.ParseAssign();
+	parse.ParseLumpOrTextureName(info->skypic1);
+	info->skyspeed1 = 0;
+}
+
 DEFINE_MAP_OPTION(fade, true)
 {
 	parse.ParseAssign();
diff --git a/src/p_3dfloors.cpp b/src/p_3dfloors.cpp
index 13df142a7..fb641ccb8 100644
--- a/src/p_3dfloors.cpp
+++ b/src/p_3dfloors.cpp
@@ -168,13 +168,19 @@ static int P_Set3DFloor(line_t * line, int param,int param2, int alpha)
 					if (l->args[0]) 
 					{
 						// Yes, Vavoom's 3D-floor definitions suck!
-						static DWORD vavoomcolors[]={
-							0, 0x101080, 0x801010, 0x108010, 0x287020, 0xf0f010};
+						// The content list changed in r1783 of Vavoom to be unified
+						// among all its supported games, so it has now ten different
+						// values instead of just five.
+						static DWORD vavoomcolors[]={VC_EMPTY, 
+							VC_WATER, VC_LAVA, VC_NUKAGE, VC_SLIME, VC_HELLSLIME,
+							VC_BLOOD, VC_SLUDGE, VC_HAZARD, VC_BOOMWATER};
 						flags|=FF_SWIMMABLE|FF_BOTHPLANES|FF_ALLSIDES|FF_FLOOD;
 
-						l->frontsector->ColorMap = GetSpecialLights (l->frontsector->ColorMap->Color, 
-																	 vavoomcolors[l->args[0]], 
-																	 l->frontsector->ColorMap->Desaturate);
+						l->frontsector->ColorMap = 
+							GetSpecialLights (l->frontsector->ColorMap->Color, 
+											  vavoomcolors[l->args[0]]&VC_COLORMASK, 
+											  (vavoomcolors[l->args[0]]&VC_ALPHAMASK)>>24);
+										//	  l->frontsector->ColorMap->Desaturate);
 					}
 					alpha=(alpha*255)/100;
 					break;
diff --git a/src/p_3dfloors.h b/src/p_3dfloors.h
index 254884c8d..9e03897be 100644
--- a/src/p_3dfloors.h
+++ b/src/p_3dfloors.h
@@ -39,7 +39,22 @@ typedef enum
   
 } ffloortype_e;
 
-
+// This is for the purpose of Sector_SetContents:
+enum : unsigned int
+{
+	VC_EMPTY = 0, // Here's the original values of the color shifts in Vavoom, and in ARGB:
+	VC_WATER	 = 0x80825032,	// 130, 80, 50, 128		-> 80.82.50.32 (was 0x101080)
+	VC_LAVA		 = 0x96FF5000,	// 255, 80, 0, 150		-> 96.FF.50.00 (was 0xf0f010)
+	VC_NUKAGE	 = 0x9632FF32,	// 50, 255, 50, 150		-> 96.32.FF.32 (was 0x108010)
+	VC_SLIME	 = 0x96001905,	// 0, 25, 5, 150		-> 96.00.19.05 (was 0x287020)
+	VC_HELLSLIME = 0x96FF5000,	// 255, 80, 0, 150		-> 96.FF.50.00 (wasn't covered)
+	VC_BLOOD	 = 0x96A00A0A,	// 160, 16, 16, 150		-> 96.A0.0A.0A (was 0x801010)
+	VC_SLUDGE	 = 0x9680A080,	// 128, 160, 128, 150	-> 96.80.A0.80 (wasn't covered)
+	VC_HAZARD	 = 0x8080A080,	// 128, 160, 128, 128	-> 80.80.A0.80 (wasn't covered)
+	VC_BOOMWATER = 0x80004FA5,	// Boom WATERMAP:		-> 80.00.4F.A5 (wasn't covered)
+	VC_ALPHAMASK = 0xFF000000,
+	VC_COLORMASK = 0x00FFFFFF,
+};
 
 #ifdef _3DFLOORS
 
diff --git a/src/p_map.cpp b/src/p_map.cpp
index af299eb26..3a2a88ae7 100644
--- a/src/p_map.cpp
+++ b/src/p_map.cpp
@@ -1594,12 +1594,12 @@ bool P_TryMove (AActor *thing, fixed_t x, fixed_t y,
 #else
 			// When flying, slide up or down blocking lines until the actor
 			// is not blocked.
-			if (thing->z+thing->height > tmceilingz)
+			if (thing->z+thing->height > tm.ceilingz)
 			{
 				thing->velz = -8*FRACUNIT;
 				goto pushline;
 			}
-			else if (thing->z < tmfloorz && tmfloorz-tmdropoffz > thing->MaxDropOffHeight)
+			else if (thing->z < tm.floorz && tm.floorz-tm.dropoffz > thing->MaxDropOffHeight)
 			{
 				thing->velz = 8*FRACUNIT;
 				goto pushline;
diff --git a/src/p_mobj.cpp b/src/p_mobj.cpp
index aa2fa324e..70cb731c8 100644
--- a/src/p_mobj.cpp
+++ b/src/p_mobj.cpp
@@ -283,16 +283,16 @@ void AActor::Serialize (FArchive &arc)
 		<< MaxStepHeight;
 	if (SaveVersion < 1796)
 	{
-		int bouncetype, bounceflags;
-		arc << bouncetype;
+		int BounceFlags, bounceflags;
+		arc << BounceFlags;
 
 		bounceflags = 0;
-		if (bouncetype & 4)
+		if (BounceFlags & 4)
 			bounceflags |= BOUNCE_UseSeeSound;
-		bouncetype &= 3;
-			 if (bouncetype == 1)	bounceflags |= BOUNCE_Doom;
-		else if (bouncetype == 2)	bounceflags |= BOUNCE_Heretic;
-		else if (bouncetype == 3)	bounceflags |= BOUNCE_Hexen;
+		BounceFlags &= 3;
+			 if (BounceFlags == 1)	bounceflags |= BOUNCE_Doom;
+		else if (BounceFlags == 2)	bounceflags |= BOUNCE_Heretic;
+		else if (BounceFlags == 3)	bounceflags |= BOUNCE_Hexen;
 		if (flags3 & 0x00800000)
 			flags3 &= ~0x00800000, bounceflags |= BOUNCE_CanBounceWater;
 		if (flags3 & 0x01000000)
@@ -2124,7 +2124,7 @@ void P_ZMovement (AActor *mo, fixed_t oldfloorz)
 //
 	if ((mo->flags & MF_FLOAT) && !(mo->flags2 & MF2_DORMANT) && mo->target)
 	{	// float down towards target if too close
-		if (!(mo->flags & MF_SKULLFLY) && !(mo->flags & MF_INFLOAT))
+		if (!(mo->flags & (MF_SKULLFLY | MF_INFLOAT)))
 		{
 			dist = P_AproxDistance (mo->x - mo->target->x, mo->y - mo->target->y);
 			delta = (mo->target->z + (mo->height>>1)) - mo->z;
@@ -2171,8 +2171,8 @@ void P_ZMovement (AActor *mo, fixed_t oldfloorz)
 				}
 				else if (mo->flags3 & MF3_NOEXPLODEFLOOR)
 				{
-					mo->velz = 0;
 					P_HitFloor (mo);
+					mo->velz = 0;
 					return;
 				}
 				else if (mo->flags3 & MF3_FLOORHUGGER)
@@ -2262,12 +2262,12 @@ void P_ZMovement (AActor *mo, fixed_t oldfloorz)
 				mo->FloorBounceMissile (mo->ceilingsector->ceilingplane);
 				return;
 			}
-			if (mo->velz > 0)
-				mo->velz = 0;
 			if (mo->flags & MF_SKULLFLY)
 			{	// the skull slammed into something
 				mo->velz = -mo->velz;
 			}
+			if (mo->velz > 0)
+				mo->velz = 0;
 			if (mo->flags & MF_MISSILE &&
 				(!(gameinfo.gametype & GAME_DoomChex) || !(mo->flags & MF_NOCLIP)))
 			{
@@ -4942,6 +4942,7 @@ AActor * P_OldSpawnMissile(AActor * source, AActor * dest, const PClass *type)
 	P_CheckMissileSpawn(th);
 	return th;
 }
+
 //---------------------------------------------------------------------------
 //
 // FUNC P_SpawnMissileAngle
diff --git a/wadsrc/static/actors/actor.txt b/wadsrc/static/actors/actor.txt
index 96da00bb3..c1dacde2c 100644
--- a/wadsrc/static/actors/actor.txt
+++ b/wadsrc/static/actors/actor.txt
@@ -80,6 +80,7 @@ ACTOR Actor native //: Thinker
 	action native A_HeadAttack();
 	action native A_BruisAttack();
 	action native A_SkullAttack(float speed = 20);
+	action native A_BetaSkullAttack();
 	action native A_Metal();
 	action native A_SpidRefire();
 	action native A_BabyMetal();
@@ -100,7 +101,7 @@ ACTOR Actor native //: Thinker
 	action native A_BrainExplode();
 	action native A_Die(name damagetype = "none");
 	action native A_Detonate();
-	action native A_Mushroom(class<Actor> spawntype = "FatShot", int numspawns = 0, int flags = 0);
+	action native A_Mushroom(class<Actor> spawntype = "FatShot", int numspawns = 0, int flags = 0, float vrange = 4.0, float hrange = 0.5);
 	action native A_CallSpecial(int special, int arg1=0, int arg2=0, int arg3=0, int arg4=0, int arg5=0);
 
 	action native A_SetFloorClip();
diff --git a/wadsrc/static/actors/doom/lostsoul.txt b/wadsrc/static/actors/doom/lostsoul.txt
index d6f8de0c0..beb9ef4dd 100644
--- a/wadsrc/static/actors/doom/lostsoul.txt
+++ b/wadsrc/static/actors/doom/lostsoul.txt
@@ -49,3 +49,33 @@ ACTOR LostSoul 3006
 		Stop
 	}
 }
+
+Actor BetaSkull : LostSoul 9037
+{
+	States
+	{
+	Spawn:
+		SKUL A 10 A_Look
+		Loop
+	See:
+		SKUL BCDA 5 A_Chase
+		Loop
+	Missile:
+		SKUL E 4 A_FaceTarget
+		SKUL F 5 A_BetaSkullAttack
+		SKUL F 4
+		Goto See
+	Pain:
+		SKUL G 4
+		SKUL H 2 A_Pain
+		SKUL I 4
+		Goto See
+	Death:
+		SKUL JKLM 5
+		SKUL N 5 A_Scream
+		SKUL O 5
+		SKUL P 5 A_Fall
+		SKUL Q 5 A_Stop
+		Wait
+	}
+}