diff --git a/src/c_cvars.cpp b/src/c_cvars.cpp
index 1a1b71647..36e3d576b 100644
--- a/src/c_cvars.cpp
+++ b/src/c_cvars.cpp
@@ -132,6 +132,11 @@ FBaseCVar::~FBaseCVar ()
 	}
 }
 
+const char *FBaseCVar::GetHumanString(int precision) const
+{
+	return GetGenericRep(CVAR_String).String;
+}
+
 void FBaseCVar::ForceSet (UCVarValue value, ECVarType type, bool nouserinfosend)
 {
 	DoSet (value, type);
@@ -281,7 +286,9 @@ const char *FBaseCVar::ToString (UCVarValue value, ECVarType type)
 		break;
 
 	case CVAR_Float:
-		mysnprintf (cstrbuf, countof(cstrbuf), "%g", value.Float);
+		IGNORE_FORMAT_PRE
+		mysnprintf (cstrbuf, countof(cstrbuf), "%H", value.Float);
+		IGNORE_FORMAT_POST
 		break;
 
 	case CVAR_GUID:
@@ -399,7 +406,9 @@ UCVarValue FBaseCVar::FromFloat (float value, ECVarType type)
 		break;
 
 	case CVAR_String:
-		mysnprintf (cstrbuf, countof(cstrbuf), "%g", value);
+		IGNORE_FORMAT_PRE
+		mysnprintf (cstrbuf, countof(cstrbuf), "%H", value);
+		IGNORE_FORMAT_POST
 		ret.String = cstrbuf;
 		break;
 
@@ -746,6 +755,16 @@ ECVarType FFloatCVar::GetRealType () const
 	return CVAR_Float;
 }
 
+const char *FFloatCVar::GetHumanString(int precision) const
+{
+	if (precision < 0)
+	{
+		precision = 6;
+	}
+	mysnprintf(cstrbuf, countof(cstrbuf), "%.*g", precision, Value);
+	return cstrbuf;
+}
+
 UCVarValue FFloatCVar::GetGenericRep (ECVarType type) const
 {
 	return FromFloat (Value, type);
@@ -1671,7 +1690,7 @@ void FBaseCVar::ListVars (const char *filter, bool plain)
 				if (!(flags & CVAR_UNSETTABLE))
 				{
 					++count;
-					Printf ("%s : %s\n", var->GetName(), var->GetGenericRep(CVAR_String).String);
+					Printf ("%s : %s\n", var->GetName(), var->GetHumanString());
 				}
 			}
 			else
@@ -1688,7 +1707,7 @@ void FBaseCVar::ListVars (const char *filter, bool plain)
 					flags & CVAR_MOD ? 'M' : ' ',
 					flags & CVAR_IGNORE ? 'X' : ' ',
 					var->GetName(),
-					var->GetGenericRep(CVAR_String).String);
+					var->GetHumanString());
 			}
 		}
 		var = var->m_Next;
diff --git a/src/c_cvars.h b/src/c_cvars.h
index 9d000e3c0..59a3208d1 100644
--- a/src/c_cvars.h
+++ b/src/c_cvars.h
@@ -108,6 +108,7 @@ public:
 
 	virtual ECVarType GetRealType () const = 0;
 
+	virtual const char *GetHumanString(int precision=-1) const;
 	virtual UCVarValue GetGenericRep (ECVarType type) const = 0;
 	virtual UCVarValue GetFavoriteRep (ECVarType *type) const = 0;
 
@@ -268,6 +269,7 @@ public:
 	virtual UCVarValue GetGenericRepDefault (ECVarType type) const;
 	virtual UCVarValue GetFavoriteRepDefault (ECVarType *type) const;
 	virtual void SetGenericRepDefault (UCVarValue value, ECVarType type);
+	const char *GetHumanString(int precision) const override;
 
 	float operator= (float floatval)
 		{ UCVarValue val; val.Float = floatval; SetGenericRep (val, CVAR_Float); return floatval; }
diff --git a/src/c_dispatch.cpp b/src/c_dispatch.cpp
index bffdce15b..811052e1c 100644
--- a/src/c_dispatch.cpp
+++ b/src/c_dispatch.cpp
@@ -651,8 +651,7 @@ void C_DoCommand (const char *cmd, int keynum)
 			}
 			else
 			{ // Get the variable's value
-				UCVarValue val = var->GetGenericRep (CVAR_String);
-				Printf ("\"%s\" is \"%s\"\n", var->GetName(), val.String);
+				Printf ("\"%s\" is \"%s\"\n", var->GetName(), var->GetHumanString());
 			}
 		}
 		else
diff --git a/src/d_netinfo.cpp b/src/d_netinfo.cpp
index 7a366e2d4..0b99fd73d 100644
--- a/src/d_netinfo.cpp
+++ b/src/d_netinfo.cpp
@@ -993,8 +993,7 @@ CCMD (playerinfo)
 			if (pair->Key != NAME_Name && pair->Key != NAME_Team && pair->Key != NAME_Skin &&
 				pair->Key != NAME_Gender && pair->Key != NAME_PlayerClass)
 			{
-				UCVarValue val = pair->Value->GetGenericRep(CVAR_String);
-				Printf("%20s: %s\n", pair->Key.GetChars(), val.String);
+				Printf("%20s: %s\n", pair->Key.GetChars(), pair->Value->GetHumanString());
 			}
 		}
 		if (argv.argc() > 2)
diff --git a/src/fragglescript/t_func.cpp b/src/fragglescript/t_func.cpp
index 5d4320a4f..f8648808d 100644
--- a/src/fragglescript/t_func.cpp
+++ b/src/fragglescript/t_func.cpp
@@ -2185,7 +2185,7 @@ void FParser::SF_SetLineMonsterBlocking(void)
 {
 	if (CheckArgs(2))
 	{
-		int blocking = intvalue(t_argv[1]) ? ML_BLOCKMONSTERS : 0;
+		int blocking = intvalue(t_argv[1]) ? (int)ML_BLOCKMONSTERS : 0;
 		int tag=intvalue(t_argv[0]);
 
 		FLineIdIterator itr(tag);
diff --git a/src/g_shared/a_decals.cpp b/src/g_shared/a_decals.cpp
index cdf3c2b2e..c37c1065a 100644
--- a/src/g_shared/a_decals.cpp
+++ b/src/g_shared/a_decals.cpp
@@ -250,27 +250,27 @@ FTextureID DBaseDecal::StickToWall (side_t *wall, double x, double y, F3DFloor *
 	{
 		RenderFlags |= RF_RELMID;
 		if (line->flags & ML_DONTPEGBOTTOM)
-			Z -= front->GetPlaneTexZF(sector_t::floor);
+			Z -= front->GetPlaneTexZ(sector_t::floor);
 		else
-			Z -= front->GetPlaneTexZF(sector_t::ceiling);
+			Z -= front->GetPlaneTexZ(sector_t::ceiling);
 		tex = wall->GetTexture(side_t::mid);
 	}
 	else if (back->floorplane.ZatPoint (x, y) >= Z)
 	{
 		RenderFlags |= RF_RELLOWER|RF_CLIPLOWER;
 		if (line->flags & ML_DONTPEGBOTTOM)
-			Z -= front->GetPlaneTexZF(sector_t::ceiling);
+			Z -= front->GetPlaneTexZ(sector_t::ceiling);
 		else
-			Z -= back->GetPlaneTexZF(sector_t::floor);
+			Z -= back->GetPlaneTexZ(sector_t::floor);
 		tex = wall->GetTexture(side_t::bottom);
 	}
 	else if (back->ceilingplane.ZatPoint (x, y) <= Z)
 	{
 		RenderFlags |= RF_RELUPPER|RF_CLIPUPPER;
 		if (line->flags & ML_DONTPEGTOP)
-			Z -= front->GetPlaneTexZF(sector_t::ceiling);
+			Z -= front->GetPlaneTexZ(sector_t::ceiling);
 		else
-			Z -= back->GetPlaneTexZF(sector_t::ceiling);
+			Z -= back->GetPlaneTexZ(sector_t::ceiling);
 		tex = wall->GetTexture(side_t::top);
 	}
 	else if (ffloor) // this is a 3d-floor segment - do this only if we know which one!
@@ -278,9 +278,9 @@ FTextureID DBaseDecal::StickToWall (side_t *wall, double x, double y, F3DFloor *
 		Sector=ffloor->model;
 		RenderFlags |= RF_RELMID|RF_CLIPMID;
 		if (line->flags & ML_DONTPEGBOTTOM)
-			Z -= Sector->GetPlaneTexZF(sector_t::floor);
+			Z -= Sector->GetPlaneTexZ(sector_t::floor);
 		else
-			Z -= Sector->GetPlaneTexZF(sector_t::ceiling);
+			Z -= Sector->GetPlaneTexZ(sector_t::ceiling);
 
 		if (ffloor->flags & FF_UPPERTEXTURE)
 		{
@@ -335,29 +335,29 @@ double DBaseDecal::GetRealZ (const side_t *wall) const
 	case RF_RELUPPER:
 		if (line->flags & ML_DONTPEGTOP)
 		{
-			return Z + front->GetPlaneTexZF(sector_t::ceiling);
+			return Z + front->GetPlaneTexZ(sector_t::ceiling);
 		}
 		else
 		{
-			return Z + back->GetPlaneTexZF(sector_t::ceiling);
+			return Z + back->GetPlaneTexZ(sector_t::ceiling);
 		}
 	case RF_RELLOWER:
 		if (line->flags & ML_DONTPEGBOTTOM)
 		{
-			return Z + front->GetPlaneTexZF(sector_t::ceiling);
+			return Z + front->GetPlaneTexZ(sector_t::ceiling);
 		}
 		else
 		{
-			return Z + back->GetPlaneTexZF(sector_t::floor);
+			return Z + back->GetPlaneTexZ(sector_t::floor);
 		}
 	case RF_RELMID:
 		if (line->flags & ML_DONTPEGBOTTOM)
 		{
-			return Z + front->GetPlaneTexZF(sector_t::floor);
+			return Z + front->GetPlaneTexZ(sector_t::floor);
 		}
 		else
 		{
-			return Z + front->GetPlaneTexZF(sector_t::ceiling);
+			return Z + front->GetPlaneTexZ(sector_t::ceiling);
 		}
 	}
 }
diff --git a/src/menu/optionmenuitems.h b/src/menu/optionmenuitems.h
index f810f788b..8a1840027 100644
--- a/src/menu/optionmenuitems.h
+++ b/src/menu/optionmenuitems.h
@@ -295,10 +295,10 @@ public:
 			}
 			else
 			{
-				UCVarValue cv = mCVar->GetGenericRep(CVAR_String);
+				const char *cv = mCVar->GetHumanString();
 				for(unsigned i = 0; i < (*opt)->mValues.Size(); i++)
 				{
-					if ((*opt)->mValues[i].TextValue.CompareNoCase(cv.String) == 0)
+					if ((*opt)->mValues[i].TextValue.CompareNoCase(cv) == 0)
 					{
 						Selection = i;
 						break;
@@ -995,7 +995,7 @@ public:
 		if ( mCVar == NULL )
 			return "";
 
-		return mCVar->GetGenericRep( CVAR_String ).String;
+		return mCVar->GetHumanString();
 	}
 
 	virtual FString Represent()
diff --git a/src/p_3dmidtex.cpp b/src/p_3dmidtex.cpp
index 069a89e54..26e9cf58b 100644
--- a/src/p_3dmidtex.cpp
+++ b/src/p_3dmidtex.cpp
@@ -242,14 +242,14 @@ bool P_GetMidTexturePosition(const line_t *line, int sideno, double *ptextop, do
 	if(line->flags & ML_DONTPEGBOTTOM)
 	{
 		*ptexbot = y_offset +
-			MAX(line->frontsector->GetPlaneTexZF(sector_t::floor), line->backsector->GetPlaneTexZF(sector_t::floor));
+			MAX(line->frontsector->GetPlaneTexZ(sector_t::floor), line->backsector->GetPlaneTexZ(sector_t::floor));
 
 		*ptextop = *ptexbot + textureheight;
 	}
 	else
 	{
 		*ptextop = y_offset +
-		   MIN(line->frontsector->GetPlaneTexZF(sector_t::ceiling), line->backsector->GetPlaneTexZF(sector_t::ceiling));
+		   MIN(line->frontsector->GetPlaneTexZ(sector_t::ceiling), line->backsector->GetPlaneTexZ(sector_t::ceiling));
 		
 		*ptexbot = *ptextop - textureheight;
 	}
diff --git a/src/p_buildmap.cpp b/src/p_buildmap.cpp
index 428e5e367..7e65bf05d 100644
--- a/src/p_buildmap.cpp
+++ b/src/p_buildmap.cpp
@@ -593,11 +593,11 @@ static void LoadWalls (walltype *walls, int numwalls, sectortype *bsec)
 		{
 			if (walls[i].cstat & 512)
 			{
-				lines[j].Alpha = TRANSLUC33;
+				lines[j].alpha = 1/3.;
 			}
 			else
 			{
-				lines[j].Alpha = TRANSLUC66;
+				lines[j].alpha = 2/3.;
 			}
 		}
 		if (walls[i].cstat & 1)
diff --git a/src/p_effect.cpp b/src/p_effect.cpp
index efa42d11a..25838459d 100644
--- a/src/p_effect.cpp
+++ b/src/p_effect.cpp
@@ -632,7 +632,7 @@ struct TrailSegment
 
 
 
-void P_DrawRailTrail(AActor *source, TArray<SPortalHit> &portalhits, int color1, int color2, double maxdiff, int flags, PClassActor *spawnclass, DAngle angle, int duration, double sparsity, double drift, int SpiralOffset)
+void P_DrawRailTrail(AActor *source, TArray<SPortalHit> &portalhits, int color1, int color2, double maxdiff, int flags, PClassActor *spawnclass, DAngle angle, int duration, double sparsity, double drift, int SpiralOffset, DAngle pitch)
 {
 	double length = 0;
 	int steps, i;
@@ -889,7 +889,11 @@ void P_DrawRailTrail(AActor *source, TArray<SPortalHit> &portalhits, int color1,
 			}			
 			AActor *thing = Spawn (spawnclass, pos + diff, ALLOW_REPLACE);
 			if (thing)
+			{
+				if (source)	thing->target = source;
+				thing->Angles.Pitch = pitch;
 				thing->Angles.Yaw = angle;
+			}
 			pos += trail[segment].dir * stepsize;
 			lencount -= stepsize;
 			if (lencount <= 0)
diff --git a/src/p_effect.h b/src/p_effect.h
index 1e7750343..8ae272329 100644
--- a/src/p_effect.h
+++ b/src/p_effect.h
@@ -97,7 +97,7 @@ struct SPortalHit
 	DVector3 OutDir;
 };
 
-void P_DrawRailTrail(AActor *source, TArray<SPortalHit> &portalhits, int color1, int color2, double maxdiff = 0, int flags = 0, PClassActor *spawnclass = NULL, DAngle angle = 0., int duration = 35, double sparsity = 1.0, double drift = 1.0, int SpiralOffset = 270);
+void P_DrawRailTrail(AActor *source, TArray<SPortalHit> &portalhits, int color1, int color2, double maxdiff = 0, int flags = 0, PClassActor *spawnclass = NULL, DAngle angle = 0., int duration = 35, double sparsity = 1.0, double drift = 1.0, int SpiralOffset = 270, DAngle pitch = 0.);
 void P_DrawSplash (int count, const DVector3 &pos, DAngle angle, int kind);
 void P_DrawSplash2 (int count, const DVector3 &pos, DAngle angle, int updown, int kind);
 void P_DisconnectEffect (AActor *actor);
diff --git a/src/p_glnodes.cpp b/src/p_glnodes.cpp
index bc96f14bd..739990692 100644
--- a/src/p_glnodes.cpp
+++ b/src/p_glnodes.cpp
@@ -263,7 +263,7 @@ static bool LoadGLVertexes(FileReader * lump)
 
 	for (i = firstglvertex; i < numvertexes; i++)
 	{
-		vertexes[i].set(LittleLong(mgl->x), LittleLong(mgl->y));
+		vertexes[i].set(LittleLong(mgl->x)/65536., LittleLong(mgl->y)/65536.);
 		mgl++;
 	}
 	delete[] gldata;
diff --git a/src/p_linkedsectors.cpp b/src/p_linkedsectors.cpp
index 583175def..37743455d 100644
--- a/src/p_linkedsectors.cpp
+++ b/src/p_linkedsectors.cpp
@@ -103,7 +103,7 @@ static bool MoveCeiling(sector_t *sector, int crush, double move)
 	// Don't let the ceiling go below the floor
 	if (!sector->ceilingplane.isSlope() && !sector->floorplane.isSlope() &&
 		!sector->PortalIsLinked(sector_t::floor) &&
-		sector->GetPlaneTexZF(sector_t::floor)  > sector->GetPlaneTexZF(sector_t::ceiling)) return false;
+		sector->GetPlaneTexZ(sector_t::floor)  > sector->GetPlaneTexZ(sector_t::ceiling)) return false;
 
 	return true;
 }
@@ -118,7 +118,7 @@ static bool MoveFloor(sector_t *sector, int crush, double move)
 	// Don't let the floor go above the ceiling
 	if (!sector->ceilingplane.isSlope() && !sector->floorplane.isSlope() &&
 		!sector->PortalIsLinked(sector_t::ceiling) &&
-		 sector->GetPlaneTexZF(sector_t::floor) > sector->GetPlaneTexZF(sector_t::ceiling)) return false;
+		 sector->GetPlaneTexZ(sector_t::floor) > sector->GetPlaneTexZ(sector_t::ceiling)) return false;
 
 	return true;
 }
diff --git a/src/p_lnspec.cpp b/src/p_lnspec.cpp
index 8c9fe3c7e..8aeba4c8b 100644
--- a/src/p_lnspec.cpp
+++ b/src/p_lnspec.cpp
@@ -1057,10 +1057,25 @@ FUNC(LS_Teleport_NoFog)
 // Teleport_NoFog (tid, useang, sectortag, keepheight)
 {
 	int flags = 0;
-	if (!arg1)
+	switch (arg1)
 	{
+	case 0:
 		flags |= TELF_KEEPORIENTATION;
+		break;
+
+	default:
+	case 1:
+		break;
+
+	case 2:
+		flags |= TELF_KEEPORIENTATION | TELF_ROTATEBOOM;	// adjust to exit thing like Boom (i.e. with incorrect reversed angle)
+		break;
+
+	case 3:
+		flags |= TELF_KEEPORIENTATION | TELF_ROTATEBOOMINVERSE;	// adjust to exit thing correctly
+		break;
 	}
+
 	if (arg3)
 	{
 		flags |= TELF_KEEPHEIGHT;
@@ -2976,7 +2991,7 @@ FUNC(LS_TranslucentLine)
 	int linenum;
 	while ((linenum = itr.Next()) >= 0)
 	{
-		lines[linenum].Alpha = Scale(clamp(arg1, 0, 255), OPAQUE, 255);
+		lines[linenum].alpha = clamp(arg1, 0, 255) / 255.;
 		if (arg2 == 0)
 		{
 			lines[linenum].flags &= ~ML_ADDTRANS;
diff --git a/src/p_map.cpp b/src/p_map.cpp
index 72746f2fb..3d04c6889 100644
--- a/src/p_map.cpp
+++ b/src/p_map.cpp
@@ -4704,7 +4704,7 @@ void P_RailAttack(FRailParams *p)
 	}
 
 	// Draw the slug's trail.
-	P_DrawRailTrail(source, rail_data.PortalHits, p->color1, p->color2, p->maxdiff, p->flags, p->spawnclass, angle, p->duration, p->sparsity, p->drift, p->SpiralOffset);
+	P_DrawRailTrail(source, rail_data.PortalHits, p->color1, p->color2, p->maxdiff, p->flags, p->spawnclass, angle, p->duration, p->sparsity, p->drift, p->SpiralOffset, pitch);
 }
 
 //==========================================================================
diff --git a/src/p_saveg.cpp b/src/p_saveg.cpp
index 26fba7e68..fdefa1987 100644
--- a/src/p_saveg.cpp
+++ b/src/p_saveg.cpp
@@ -399,7 +399,7 @@ void P_SerializeWorld (FArchive &arc)
 		arc << li->flags
 			<< li->activation
 			<< li->special
-			<< li->Alpha;
+			<< li->alpha;
 
 		if (P_IsACSSpecial(li->special))
 		{
diff --git a/src/p_sectors.cpp b/src/p_sectors.cpp
index 7db61dc67..9199f0812 100644
--- a/src/p_sectors.cpp
+++ b/src/p_sectors.cpp
@@ -73,7 +73,7 @@ double sector_t::FindLowestFloorSurrounding (vertex_t **v) const
 	double ofloor;
 	vertex_t *spot;
 
-	if (linecount == 0) return GetPlaneTexZF(sector_t::floor);
+	if (linecount == 0) return GetPlaneTexZ(sector_t::floor);
 
 	spot = lines[0]->v1;
 	floor = floorplane.ZatPoint(spot);
@@ -117,7 +117,7 @@ double sector_t::FindHighestFloorSurrounding (vertex_t **v) const
 	double ofloor;
 	vertex_t *spot;
 
-	if (linecount == 0) return GetPlaneTexZF(sector_t::floor);
+	if (linecount == 0) return GetPlaneTexZ(sector_t::floor);
 
 	spot = lines[0]->v1;
 	floor = -FLT_MAX;
@@ -168,7 +168,7 @@ double sector_t::FindNextHighestFloor (vertex_t **v) const
 	line_t *check;
 	int i;
 
-	if (linecount == 0) return GetPlaneTexZF(sector_t::floor);
+	if (linecount == 0) return GetPlaneTexZ(sector_t::floor);
 
 	spot = lines[0]->v1;
 	height = floorplane.ZatPoint(spot);
@@ -223,7 +223,7 @@ double sector_t::FindNextLowestFloor (vertex_t **v) const
 	line_t *check;
 	int i;
 
-	if (linecount == 0) return GetPlaneTexZF(sector_t::floor);
+	if (linecount == 0) return GetPlaneTexZ(sector_t::floor);
 
 	spot = lines[0]->v1;
 	height = floorplane.ZatPoint (spot);
@@ -278,7 +278,7 @@ double sector_t::FindNextLowestCeiling (vertex_t **v) const
 	int i;
 
 
-	if (linecount == 0) return GetPlaneTexZF(sector_t::ceiling);
+	if (linecount == 0) return GetPlaneTexZ(sector_t::ceiling);
 
 	spot = lines[0]->v1;
 	height = ceilingplane.ZatPoint(spot);
@@ -332,7 +332,7 @@ double sector_t::FindNextHighestCeiling (vertex_t **v) const
 	line_t *check;
 	int i;
 
-	if (linecount == 0) return GetPlaneTexZF(sector_t::ceiling);
+	if (linecount == 0) return GetPlaneTexZ(sector_t::ceiling);
 
 	spot = lines[0]->v1;
 	height = ceilingplane.ZatPoint(spot);
@@ -378,7 +378,7 @@ double sector_t::FindLowestCeilingSurrounding (vertex_t **v) const
 	line_t *check;
 	int i;
 
-	if (linecount == 0) return GetPlaneTexZF(sector_t::ceiling);
+	if (linecount == 0) return GetPlaneTexZ(sector_t::ceiling);
 
 	spot = lines[0]->v1;
 	height = FLT_MAX;
@@ -420,7 +420,7 @@ double sector_t::FindHighestCeilingSurrounding (vertex_t **v) const
 	line_t *check;
 	int i;
 
-	if (linecount == 0) return GetPlaneTexZF(sector_t::ceiling);
+	if (linecount == 0) return GetPlaneTexZ(sector_t::ceiling);
 
 	spot = lines[0]->v1;
 	height = -FLT_MAX;
@@ -879,7 +879,7 @@ void sector_t::CheckPortalPlane(int plane)
 	if (GetPortalType(plane) == PORTS_LINKEDPORTAL)
 	{
 		double portalh = GetPortalPlaneZ(plane);
-		double planeh = GetPlaneTexZF(plane);
+		double planeh = GetPlaneTexZ(plane);
 		int obstructed = PLANEF_OBSTRUCTED * (plane == sector_t::floor ? planeh > portalh : planeh < portalh);
 		planes[plane].Flags = (planes[plane].Flags  & ~PLANEF_OBSTRUCTED) | obstructed;
 	}
diff --git a/src/p_setup.cpp b/src/p_setup.cpp
index e1dff8762..ebd38ba9a 100644
--- a/src/p_setup.cpp
+++ b/src/p_setup.cpp
@@ -862,7 +862,7 @@ void P_LoadVertexes (MapData * map)
 		SWORD x, y;
 
 		(*map->file) >> x >> y;
-		vertexes[i].set(x << FRACBITS, y << FRACBITS);
+		vertexes[i].set(double(x), double(y));
 	}
 }
 
@@ -1497,9 +1497,9 @@ void P_LoadSectors (MapData *map, FMissingTextureTracker &missingtex)
 		ss->e = &sectors[0].e[i];
 		if (!map->HasBehavior) ss->Flags |= SECF_FLOORDROP;
 		ss->SetPlaneTexZ(sector_t::floor, (double)LittleShort(ms->floorheight));
-		ss->floorplane.set(0, 0, 1., -ss->GetPlaneTexZF(sector_t::floor));
+		ss->floorplane.set(0, 0, 1., -ss->GetPlaneTexZ(sector_t::floor));
 		ss->SetPlaneTexZ(sector_t::ceiling, (double)LittleShort(ms->ceilingheight));
-		ss->ceilingplane.set(0, 0, -1., ss->GetPlaneTexZF(sector_t::ceiling));
+		ss->ceilingplane.set(0, 0, -1., ss->GetPlaneTexZ(sector_t::ceiling));
 		SetTexture(ss, i, sector_t::floor, ms->floorpic, missingtex, true);
 		SetTexture(ss, i, sector_t::ceiling, ms->ceilingpic, missingtex, true);
 		ss->lightlevel = LittleShort(ms->lightlevel);
@@ -2043,10 +2043,10 @@ void P_FinishLoadingLineDef(line_t *ld, int alpha)
 			additive = true;
 		}
 
-		alpha = Scale(alpha, OPAQUE, 255); 
+		double dalpha = alpha / 255.;
 		if (!ld->args[0])
 		{
-			ld->Alpha = alpha;
+			ld->alpha = dalpha;
 			if (additive)
 			{
 				ld->flags |= ML_ADDTRANS;
@@ -2058,7 +2058,7 @@ void P_FinishLoadingLineDef(line_t *ld, int alpha)
 			{
 				if (tagManager.LineHasID(j, ld->args[0]))
 				{
-					lines[j].Alpha = alpha;
+					lines[j].alpha = dalpha;
 					if (additive)
 					{
 						lines[j].flags |= ML_ADDTRANS;
@@ -2160,7 +2160,7 @@ void P_LoadLineDefs (MapData * map)
 	ld = lines;
 	for (i = 0; i < numlines; i++, mld++, ld++)
 	{
-		ld->Alpha = OPAQUE;	// [RH] Opaque by default
+		ld->alpha = 1.;	// [RH] Opaque by default
 		ld->portalindex = UINT_MAX;
 
 		// [RH] Translate old linedef special and flags to be
@@ -2264,7 +2264,7 @@ void P_LoadLineDefs2 (MapData * map)
 
 		ld->v1 = &vertexes[LittleShort(mld->v1)];
 		ld->v2 = &vertexes[LittleShort(mld->v2)];
-		ld->Alpha = OPAQUE;	// [RH] Opaque by default
+		ld->alpha = 1.;	// [RH] Opaque by default
 
 		P_SetSideNum (&ld->sidedef[0], LittleShort(mld->sidenum[0]));
 		P_SetSideNum (&ld->sidedef[1], LittleShort(mld->sidenum[1]));
diff --git a/src/p_slopes.cpp b/src/p_slopes.cpp
index 1ee992d5e..66b3d0747 100644
--- a/src/p_slopes.cpp
+++ b/src/p_slopes.cpp
@@ -209,7 +209,7 @@ void P_VavoomSlope(sector_t * sec, int id, const DVector3 &pos, int which)
 		{
 			DVector3 v1, v2, cross;
 			secplane_t *srcplane = (which == 0) ? &sec->floorplane : &sec->ceilingplane;
-			double srcheight = (which == 0) ? sec->GetPlaneTexZF(sector_t::floor) : sec->GetPlaneTexZF(sector_t::ceiling);
+			double srcheight = (which == 0) ? sec->GetPlaneTexZ(sector_t::floor) : sec->GetPlaneTexZ(sector_t::ceiling);
 
 			v1[0] = pos.X - l->v2->fX();
 			v1[1] = pos.Y - l->v2->fY();
@@ -328,9 +328,9 @@ static void P_SetSlopesFromVertexHeights(FMapThing *firstmt, FMapThing *lastmt,
 				double *h3 = vt_heights[j].CheckKey(vi3);
 				if (h1 == NULL && h2 == NULL && h3 == NULL) continue;
 
-				vt1.Z = h1? *h1 : j==0? sec->GetPlaneTexZF(sector_t::floor) : sec->GetPlaneTexZF(sector_t::ceiling);
-				vt2.Z = h2? *h2 : j==0? sec->GetPlaneTexZF(sector_t::floor) : sec->GetPlaneTexZF(sector_t::ceiling);
-				vt3.Z = h3? *h3 : j==0? sec->GetPlaneTexZF(sector_t::floor) : sec->GetPlaneTexZF(sector_t::ceiling);
+				vt1.Z = h1? *h1 : j==0? sec->GetPlaneTexZ(sector_t::floor) : sec->GetPlaneTexZ(sector_t::ceiling);
+				vt2.Z = h2? *h2 : j==0? sec->GetPlaneTexZ(sector_t::floor) : sec->GetPlaneTexZ(sector_t::ceiling);
+				vt3.Z = h3? *h3 : j==0? sec->GetPlaneTexZ(sector_t::floor) : sec->GetPlaneTexZ(sector_t::ceiling);
 
 				if (P_PointOnLineSidePrecise(vertexes[vi3].fX(), vertexes[vi3].fY(), sec->lines[0]) == 0)
 				{
@@ -488,8 +488,8 @@ static void P_AlignPlane(sector_t *sec, line_t *line, int which)
 	double srcheight, destheight;
 
 	srcplane = (which == 0) ? &sec->floorplane : &sec->ceilingplane;
-	srcheight = (which == 0) ? sec->GetPlaneTexZF(sector_t::floor) : sec->GetPlaneTexZF(sector_t::ceiling);
-	destheight = (which == 0) ? refsec->GetPlaneTexZF(sector_t::floor) : refsec->GetPlaneTexZF(sector_t::ceiling);
+	srcheight = (which == 0) ? sec->GetPlaneTexZ(sector_t::floor) : sec->GetPlaneTexZ(sector_t::ceiling);
+	destheight = (which == 0) ? refsec->GetPlaneTexZ(sector_t::floor) : refsec->GetPlaneTexZ(sector_t::ceiling);
 
 	p[0] = line->v1->fX();
 	p[1] = line->v1->fY();
diff --git a/src/p_spec.cpp b/src/p_spec.cpp
index 7eaf72210..93d002599 100644
--- a/src/p_spec.cpp
+++ b/src/p_spec.cpp
@@ -841,7 +841,7 @@ static void SetupFloorPortal (AStackPoint *point)
 	if (skyv != NULL)
 	{
 		skyv->target = point;
-		if (Sector->GetAlphaF(sector_t::floor) == 1.)
+		if (Sector->GetAlpha(sector_t::floor) == 1.)
 			Sector->SetAlpha(sector_t::floor, clamp(point->args[0], 0, 255) / 255.);
 
 		Sector->Portals[sector_t::floor] = P_GetStackPortal(skyv, sector_t::floor);
@@ -856,7 +856,7 @@ static void SetupCeilingPortal (AStackPoint *point)
 	if (skyv != NULL)
 	{
 		skyv->target = point;
-		if (Sector->GetAlphaF(sector_t::ceiling) == 1.)
+		if (Sector->GetAlpha(sector_t::ceiling) == 1.)
 			Sector->SetAlpha(sector_t::ceiling, clamp(point->args[0], 0, 255) / 255.);
 
 		Sector->Portals[sector_t::ceiling] = P_GetStackPortal(skyv, sector_t::ceiling);
@@ -917,7 +917,7 @@ static void SetPortal(sector_t *sector, int plane, unsigned pnum, double alpha)
 		if (sector->GetPortalType(sector_t::ceiling) == PORTS_SKYVIEWPOINT)
 		{
 			sector->Portals[sector_t::ceiling] = pnum;
-			if (sector->GetAlphaF(sector_t::ceiling) == 1.)
+			if (sector->GetAlpha(sector_t::ceiling) == 1.)
 				sector->SetAlpha(sector_t::ceiling, alpha);
 
 			if (sectorPortals[pnum].mFlags & PORTSF_SKYFLATONLY)
@@ -930,7 +930,7 @@ static void SetPortal(sector_t *sector, int plane, unsigned pnum, double alpha)
 		{
 			sector->Portals[sector_t::floor] = pnum;
 		}
-		if (sector->GetAlphaF(sector_t::floor) == 1.)
+		if (sector->GetAlpha(sector_t::floor) == 1.)
 			sector->SetAlpha(sector_t::floor, alpha);
 
 		if (sectorPortals[pnum].mFlags & PORTSF_SKYFLATONLY)
diff --git a/src/p_spec.h b/src/p_spec.h
index 0899c6268..7bd04f48c 100644
--- a/src/p_spec.h
+++ b/src/p_spec.h
@@ -666,6 +666,8 @@ enum
 	TELF_KEEPORIENTATION	= 4,
 	TELF_KEEPVELOCITY		= 8,
 	TELF_KEEPHEIGHT			= 16,
+	TELF_ROTATEBOOM			= 32,
+	TELF_ROTATEBOOMINVERSE	= 64,
 };
 
 //Spawns teleport fog. Pass the actor to pluck TeleFogFromType and TeleFogToType. 'from' determines if this is the fog to spawn at the old position (true) or new (false).
diff --git a/src/p_teleport.cpp b/src/p_teleport.cpp
index 40ae4efed..a3dbd0899 100644
--- a/src/p_teleport.cpp
+++ b/src/p_teleport.cpp
@@ -349,13 +349,14 @@ bool EV_Teleport (int tid, int tag, line_t *line, int side, AActor *thing, int f
 		return false;
 	}
 	// [RH] Lee Killough's changes for silent teleporters from BOOM
-	if ((flags & TELF_KEEPORIENTATION) && line)
+	if ((flags & (TELF_ROTATEBOOM|TELF_ROTATEBOOMINVERSE)) && line)
 	{
 		// Get the angle between the exit thing and source linedef.
 		// Rotate 90 degrees, so that walking perpendicularly across
 		// teleporter linedef causes thing to exit in the direction
 		// indicated by the exit thing.
 		angle = line->Delta().Angle() - searcher->Angles.Yaw + 90.;
+		if (flags & TELF_ROTATEBOOMINVERSE) angle = -angle;
 
 		// Sine, cosine of angle adjustment
 		s = angle.Sin();
@@ -382,14 +383,17 @@ bool EV_Teleport (int tid, int tag, line_t *line, int side, AActor *thing, int f
 	if (P_Teleport (thing, DVector3(searcher->Pos(), z), searcher->Angles.Yaw + badangle, flags))
 	{
 		// [RH] Lee Killough's changes for silent teleporters from BOOM
-		if (!(flags & TELF_DESTFOG) && line && (flags & TELF_KEEPORIENTATION))
+		if (line)
 		{
-			// Rotate thing according to difference in angles
-			thing->Angles.Yaw += angle;
+			if (flags & (TELF_ROTATEBOOM| TELF_ROTATEBOOMINVERSE))
+			{
+				// Rotate thing according to difference in angles (or not - Boom got the direction wrong here.)
+				thing->Angles.Yaw += angle;
 
-			// Rotate thing's velocity to come out of exit just like it entered
-			thing->Vel.X = vx*c - vy*s;
-			thing->Vel.Y = vy*c + vx*s;
+				// Rotate thing's velocity to come out of exit just like it entered
+				thing->Vel.X = vx*c - vy*s;
+				thing->Vel.Y = vy*c + vx*s;
+			}
 		}
 		if (vx == 0 && vy == 0 && thing->player != NULL && thing->player->mo == thing && !predicting)
 		{
diff --git a/src/p_udmf.cpp b/src/p_udmf.cpp
index 20852a585..86116f881 100644
--- a/src/p_udmf.cpp
+++ b/src/p_udmf.cpp
@@ -785,7 +785,7 @@ public:
 		FString tagstring;
 
 		memset(ld, 0, sizeof(*ld));
-		ld->Alpha = OPAQUE;
+		ld->alpha = 1.;
 		ld->portalindex = UINT_MAX;
 		ld->sidedef[0] = ld->sidedef[1] = NULL;
 		if (level.flags2 & LEVEL2_CLIPMIDTEX) ld->flags |= ML_CLIP_MIDTEX;
@@ -1087,13 +1087,13 @@ public:
 		{
 			ld->activation = (ld->activation & ~SPAC_Use) | SPAC_UseThrough;
 		}
-		if (strifetrans && ld->Alpha == OPAQUE)
+		if (strifetrans && ld->alpha == 1.)
 		{
-			ld->Alpha = TRANSLUC75;
+			ld->alpha = 0.75;
 		}
-		if (strifetrans2 && ld->Alpha == OPAQUE)
+		if (strifetrans2 && ld->alpha == OPAQUE)
 		{
-			ld->Alpha = TRANSLUC25;
+			ld->alpha = 0.25;
 		}
 		if (ld->sidedef[0] == NULL)
 		{
@@ -1596,7 +1596,7 @@ public:
 		// Reset the planes to their defaults if not all of the plane equation's parameters were found.
 		if (fplaneflags != 15)
 		{
-			sec->floorplane.SetAtHeight(sec->GetPlaneTexZF(sector_t::floor), sector_t::floor);
+			sec->floorplane.SetAtHeight(sec->GetPlaneTexZ(sector_t::floor), sector_t::floor);
 		}
 		else
 		{
@@ -1606,7 +1606,7 @@ public:
 		}
 		if (cplaneflags != 15)
 		{
-			sec->ceilingplane.SetAtHeight(sec->GetPlaneTexZF(sector_t::ceiling), sector_t::ceiling);
+			sec->ceilingplane.SetAtHeight(sec->GetPlaneTexZ(sector_t::ceiling), sector_t::ceiling);
 		}
 		else
 		{
diff --git a/src/p_writemap.cpp b/src/p_writemap.cpp
index 20848712a..e26e3cf53 100644
--- a/src/p_writemap.cpp
+++ b/src/p_writemap.cpp
@@ -196,8 +196,8 @@ static int WriteSECTORS (FILE *file)
 
 	for (int i = 0; i < numsectors; ++i)
 	{
-		ms.floorheight = LittleShort(short(sectors[i].GetPlaneTexZF(sector_t::floor)));
-		ms.ceilingheight = LittleShort(short(sectors[i].GetPlaneTexZF(sector_t::ceiling)));
+		ms.floorheight = LittleShort(short(sectors[i].GetPlaneTexZ(sector_t::floor)));
+		ms.ceilingheight = LittleShort(short(sectors[i].GetPlaneTexZ(sector_t::ceiling)));
 		uppercopy (ms.floorpic, GetTextureName (sectors[i].GetTexture(sector_t::floor)));
 		uppercopy (ms.ceilingpic, GetTextureName (sectors[i].GetTexture(sector_t::ceiling)));
 		ms.lightlevel = LittleShort((short)sectors[i].lightlevel);
diff --git a/src/p_xlat.cpp b/src/p_xlat.cpp
index 2e30925bb..424b93a52 100644
--- a/src/p_xlat.cpp
+++ b/src/p_xlat.cpp
@@ -87,10 +87,10 @@ void P_TranslateLineDef (line_t *ld, maplinedef_t *mld, int lineindexforid)
 				passthrough = true;
 				break;
 			case -2:
-				ld->Alpha = TRANSLUC75;
+				ld->alpha = 0.75;
 				break;
 			case -3:
-				ld->Alpha = TRANSLUC25;
+				ld->alpha = 0.25;
 				break;
 			default:
 				newflags |= LineFlagTranslations[i].newvalue;
diff --git a/src/portal.cpp b/src/portal.cpp
index 6abd4e8da..964f742c7 100644
--- a/src/portal.cpp
+++ b/src/portal.cpp
@@ -708,7 +708,7 @@ unsigned P_GetPortal(int type, int plane, sector_t *from, sector_t *to, const DV
 	sectorPortals[i].mOrigin = from;
 	sectorPortals[i].mDestination = to;
 	sectorPortals[i].mDisplacement = displacement;
-	sectorPortals[i].mPlaneZ = type == PORTS_LINKEDPORTAL? from->GetPlaneTexZF(plane) : FLT_MAX;
+	sectorPortals[i].mPlaneZ = type == PORTS_LINKEDPORTAL? from->GetPlaneTexZ(plane) : FLT_MAX;
 	return i;
 }
 
diff --git a/src/r_data/r_interpolate.cpp b/src/r_data/r_interpolate.cpp
index 4ae29fc1d..8a88abed2 100644
--- a/src/r_data/r_interpolate.cpp
+++ b/src/r_data/r_interpolate.cpp
@@ -441,12 +441,12 @@ void DSectorPlaneInterpolation::UpdateInterpolation()
 	if (!ceiling)
 	{
 		oldheight = sector->floorplane.fD();
-		oldtexz = sector->GetPlaneTexZF(sector_t::floor);
+		oldtexz = sector->GetPlaneTexZ(sector_t::floor);
 	}
 	else
 	{
 		oldheight = sector->ceilingplane.fD();
-		oldtexz = sector->GetPlaneTexZF(sector_t::ceiling);
+		oldtexz = sector->GetPlaneTexZ(sector_t::ceiling);
 	}
 }
 
@@ -495,7 +495,7 @@ void DSectorPlaneInterpolation::Interpolate(double smoothratio)
 	}
 
 	bakheight = pplane->fD();
-	baktexz = sector->GetPlaneTexZF(pos);
+	baktexz = sector->GetPlaneTexZ(pos);
 
 	if (refcount == 0 && oldheight == bakheight)
 	{
diff --git a/src/r_defs.h b/src/r_defs.h
index 32d9952a7..52654b45f 100644
--- a/src/r_defs.h
+++ b/src/r_defs.h
@@ -689,9 +689,9 @@ public:
 		FTransform xform;
 		int Flags;
 		int Light;
-		fixed_t alpha;
+		double alpha;
 		FTextureID Texture;
-		fixed_t TexZ;
+		double TexZ;
 	};
 
 
@@ -779,19 +779,14 @@ public:
 
 	void SetAlpha(int pos, double o)
 	{
-		planes[pos].alpha = FLOAT2FIXED(o);
+		planes[pos].alpha = o;
 	}
 
-	fixed_t GetAlpha(int pos) const
+	double GetAlpha(int pos) const
 	{
 		return planes[pos].alpha;
 	}
 
-	double GetAlphaF(int pos) const
-	{
-		return FIXED2DBL(planes[pos].alpha);
-	}
-
 	int GetFlags(int pos) const
 	{
 		return planes[pos].Flags;
@@ -831,25 +826,20 @@ public:
 		if (floorclip && pos == floor && tex != old) AdjustFloorClip();
 	}
 
-	fixed_t GetPlaneTexZ(int pos) const
+	double GetPlaneTexZ(int pos) const
 	{
 		return planes[pos].TexZ;
 	}
 
-	double GetPlaneTexZF(int pos) const
-	{
-		return FIXED2DBL(planes[pos].TexZ);
-	}
-
 	void SetPlaneTexZ(int pos, double val, bool dirtify = false)	// This mainly gets used by init code. The only place where it must set the vertex to dirty is the interpolation code.
 	{
-		planes[pos].TexZ = FLOAT2FIXED(val);
+		planes[pos].TexZ = val;
 		if (dirtify) SetAllVerticesDirty();
 	}
 
 	void ChangePlaneTexZ(int pos, double val)
 	{
-		planes[pos].TexZ += FLOAT2FIXED(val);
+		planes[pos].TexZ += val;
 	}
 
 	static inline short ClampLight(int level)
@@ -1302,8 +1292,8 @@ public:
 	DWORD		flags;
 	DWORD		activation;	// activation type
 	int			special;
-	fixed_t		Alpha;		// <--- translucency (0=invisibile, FRACUNIT=opaque)
 	int			args[5];	// <--- hexen-style arguments (expanded to ZDoom's full width)
+	double		alpha;		// <--- translucency (0=invisibile, FRACUNIT=opaque)
 	side_t		*sidedef[2];
 	double		bbox[4];	// bounding box, for the extent of the LineDef.
 	sector_t	*frontsector, *backsector;
@@ -1324,7 +1314,7 @@ public:
 
 	void setAlpha(double a)
 	{
-		Alpha = FLOAT2FIXED(a);
+		alpha = a;
 	}
 
 	FSectorPortal *GetTransferredPortal()
diff --git a/src/r_main.cpp b/src/r_main.cpp
index 62360f647..b87119b88 100644
--- a/src/r_main.cpp
+++ b/src/r_main.cpp
@@ -726,11 +726,9 @@ void R_EnterPortal (PortalDrawseg* pds, int depth)
 	}
 	else
 	{
-		DVector3 view(ViewPos);
-		DAngle va = ViewAngle;
-		P_TranslatePortalXY(pds->src, view.X, view.Y);
-		P_TranslatePortalZ(pds->src, view.Z);
-		P_TranslatePortalAngle(pds->src, va);
+		P_TranslatePortalXY(pds->src, ViewPos.X, ViewPos.Y);
+		P_TranslatePortalZ(pds->src, ViewPos.Z);
+		P_TranslatePortalAngle(pds->src, ViewAngle);
 		P_TranslatePortalXY(pds->src, ViewPath[0].X, ViewPath[0].Y);
 		P_TranslatePortalXY(pds->src, ViewPath[1].X, ViewPath[1].Y);
 
@@ -739,8 +737,8 @@ void R_EnterPortal (PortalDrawseg* pds, int depth)
 			double distp = (ViewPath[0] - ViewPath[1]).Length();
 			if (distp > EQUAL_EPSILON)
 			{
-				double dist1 = (view - ViewPath[0]).Length();
-				double dist2 = (view - ViewPath[1]).Length();
+				double dist1 = (ViewPos - ViewPath[0]).Length();
+				double dist2 = (ViewPos - ViewPath[1]).Length();
 
 				if (dist1 + dist2 < distp + 1)
 				{
@@ -748,8 +746,6 @@ void R_EnterPortal (PortalDrawseg* pds, int depth)
 				}
 			}
 		}
-		ViewPos = view;
-		ViewAngle = va;
 	}
 
 	ViewSin = ViewAngle.Sin();
diff --git a/src/r_plane.cpp b/src/r_plane.cpp
index b24148f3f..790bb9309 100644
--- a/src/r_plane.cpp
+++ b/src/r_plane.cpp
@@ -581,7 +581,7 @@ static visplane_t *new_visplane (unsigned hash)
 // killough 2/28/98: Add offsets
 //==========================================================================
 
-visplane_t *R_FindPlane (const secplane_t &height, FTextureID picnum, int lightlevel, fixed_t alpha, bool additive,
+visplane_t *R_FindPlane (const secplane_t &height, FTextureID picnum, int lightlevel, double Alpha, bool additive,
 						const FTransform &xform,
 						 int sky, FSectorPortal *portal)
 {
@@ -593,6 +593,7 @@ visplane_t *R_FindPlane (const secplane_t &height, FTextureID picnum, int lightl
 	fixed_t yoffs = FLOAT2FIXED(xform.yOffs + xform.baseyOffs);
 	fixed_t xscale = FLOAT2FIXED(xform.xScale);
 	fixed_t yscale = FLOAT2FIXED(xform.yScale);
+	fixed_t alpha = FLOAT2FIXED(Alpha);
 	angle_t angle = (xform.Angle + xform.baseAngle).BAMs();
 
 	if (picnum == skyflatnum)	// killough 10/98
diff --git a/src/r_plane.h b/src/r_plane.h
index 4e14d79c8..25e46de98 100644
--- a/src/r_plane.h
+++ b/src/r_plane.h
@@ -98,7 +98,7 @@ visplane_t *R_FindPlane
 ( const secplane_t &height,
   FTextureID	picnum,
   int			lightlevel,
-  fixed_t		alpha,
+  double		alpha,
   bool			additive,
   const FTransform &xform,
   int			sky,
diff --git a/src/r_segs.cpp b/src/r_segs.cpp
index eadf66db2..696e30b7c 100644
--- a/src/r_segs.cpp
+++ b/src/r_segs.cpp
@@ -243,7 +243,7 @@ void R_RenderMaskedSegRange (drawseg_t *ds, int x1, int x2)
 	ESPSResult drawmode;
 
 	drawmode = R_SetPatchStyle (LegacyRenderStyles[curline->linedef->flags & ML_ADDTRANS ? STYLE_Add : STYLE_Translucent],
-		MIN<fixed_t>(curline->linedef->Alpha, OPAQUE),	0, 0);
+		(float)MIN(curline->linedef->alpha, 1.),	0, 0);
 
 	if ((drawmode == DontDraw && !ds->bFogBoundary && !ds->bFakeBoundary))
 	{
@@ -325,11 +325,11 @@ void R_RenderMaskedSegRange (drawseg_t *ds, int x1, int x2)
 	}
 	if (curline->linedef->flags & ML_DONTPEGBOTTOM)
 	{
-		dc_texturemid = MAX(frontsector->GetPlaneTexZF(sector_t::floor), backsector->GetPlaneTexZF(sector_t::floor)) + texheight;
+		dc_texturemid = MAX(frontsector->GetPlaneTexZ(sector_t::floor), backsector->GetPlaneTexZ(sector_t::floor)) + texheight;
 	}
 	else
 	{
-		dc_texturemid = MIN(frontsector->GetPlaneTexZF(sector_t::ceiling), backsector->GetPlaneTexZF(sector_t::ceiling));
+		dc_texturemid = MIN(frontsector->GetPlaneTexZ(sector_t::ceiling), backsector->GetPlaneTexZ(sector_t::ceiling));
 	}
 
 	rowoffset = curline->sidedef->GetTextureYOffset(side_t::mid);
@@ -603,7 +603,7 @@ void R_RenderFakeWall(drawseg_t *ds, int x1, int x2, F3DFloor *rover)
 	yscale = rw_pic->Scale.Y * scaledside->GetTextureYScale(scaledpart);
 
 	double rowoffset = curline->sidedef->GetTextureYOffset(side_t::mid) + rover->master->sidedef[0]->GetTextureYOffset(side_t::mid);
-	double planez = rover->model->GetPlaneTexZF(sector_t::ceiling);
+	double planez = rover->model->GetPlaneTexZ(sector_t::ceiling);
 	rw_offset = FLOAT2FIXED(curline->sidedef->GetTextureXOffset(side_t::mid) + rover->master->sidedef[0]->GetTextureXOffset(side_t::mid));
 	if (rowoffset < 0)
 	{
@@ -2035,11 +2035,11 @@ void R_NewWall (bool needlights)
 			{ // normal orientation
 				if (linedef->flags & ML_DONTPEGBOTTOM)
 				{ // bottom of texture at bottom
-					rw_midtexturemid = (frontsector->GetPlaneTexZF(sector_t::floor) - ViewPos.Z) * yrepeat + midtexture->GetHeight();
+					rw_midtexturemid = (frontsector->GetPlaneTexZ(sector_t::floor) - ViewPos.Z) * yrepeat + midtexture->GetHeight();
 				}
 				else
 				{ // top of texture at top
-					rw_midtexturemid = (frontsector->GetPlaneTexZF(sector_t::ceiling) - ViewPos.Z) * yrepeat;
+					rw_midtexturemid = (frontsector->GetPlaneTexZ(sector_t::ceiling) - ViewPos.Z) * yrepeat;
 					if (rowoffset < 0 && midtexture != NULL)
 					{
 						rowoffset += midtexture->GetHeight();
@@ -2051,7 +2051,7 @@ void R_NewWall (bool needlights)
 				rowoffset = -rowoffset;
 				if (linedef->flags & ML_DONTPEGBOTTOM)
 				{ // top of texture at bottom
-					rw_midtexturemid = (frontsector->GetPlaneTexZF(sector_t::floor) - ViewPos.Z) * yrepeat;
+					rw_midtexturemid = (frontsector->GetPlaneTexZ(sector_t::floor) - ViewPos.Z) * yrepeat;
 				}
 				else
 				{ // bottom of texture at top
@@ -2074,7 +2074,7 @@ void R_NewWall (bool needlights)
 	{ // two-sided line
 		// hack to allow height changes in outdoor areas
 
-		rw_frontlowertop = frontsector->GetPlaneTexZF(sector_t::ceiling);
+		rw_frontlowertop = frontsector->GetPlaneTexZ(sector_t::ceiling);
 
 		if (frontsector->GetTexture(sector_t::ceiling) == skyflatnum &&
 			backsector->GetTexture(sector_t::ceiling) == skyflatnum)
@@ -2095,7 +2095,7 @@ void R_NewWall (bool needlights)
 			}
 			// Putting sky ceilings on the front and back of a line alters the way unpegged
 			// positioning works.
-			rw_frontlowertop = backsector->GetPlaneTexZF(sector_t::ceiling);
+			rw_frontlowertop = backsector->GetPlaneTexZ(sector_t::ceiling);
 		}
 
 		if ((rw_backcz1 <= rw_frontfz1 && rw_backcz2 <= rw_frontfz2) ||
@@ -2179,7 +2179,7 @@ void R_NewWall (bool needlights)
 			{ // normal orientation
 				if (linedef->flags & ML_DONTPEGTOP)
 				{ // top of texture at top
-					rw_toptexturemid = (frontsector->GetPlaneTexZF(sector_t::ceiling) - ViewPos.Z) * yrepeat;
+					rw_toptexturemid = (frontsector->GetPlaneTexZ(sector_t::ceiling) - ViewPos.Z) * yrepeat;
 					if (rowoffset < 0 && toptexture != NULL)
 					{
 						rowoffset += toptexture->GetHeight();
@@ -2187,7 +2187,7 @@ void R_NewWall (bool needlights)
 				}
 				else
 				{ // bottom of texture at bottom
-					rw_toptexturemid = (backsector->GetPlaneTexZF(sector_t::ceiling) - ViewPos.Z) * yrepeat + toptexture->GetHeight();
+					rw_toptexturemid = (backsector->GetPlaneTexZ(sector_t::ceiling) - ViewPos.Z) * yrepeat + toptexture->GetHeight();
 				}
 			}
 			else
@@ -2195,11 +2195,11 @@ void R_NewWall (bool needlights)
 				rowoffset = -rowoffset;
 				if (linedef->flags & ML_DONTPEGTOP)
 				{ // bottom of texture at top
-					rw_toptexturemid = (frontsector->GetPlaneTexZF(sector_t::ceiling) - ViewPos.Z) * yrepeat + toptexture->GetHeight();
+					rw_toptexturemid = (frontsector->GetPlaneTexZ(sector_t::ceiling) - ViewPos.Z) * yrepeat + toptexture->GetHeight();
 				}
 				else
 				{ // top of texture at bottom
-					rw_toptexturemid = (backsector->GetPlaneTexZF(sector_t::ceiling) - ViewPos.Z) * yrepeat;
+					rw_toptexturemid = (backsector->GetPlaneTexZ(sector_t::ceiling) - ViewPos.Z) * yrepeat;
 				}
 			}
 			if (toptexture->bWorldPanning)
@@ -2228,7 +2228,7 @@ void R_NewWall (bool needlights)
 				}
 				else
 				{ // top of texture at top
-					rw_bottomtexturemid = (backsector->GetPlaneTexZF(sector_t::floor) - ViewPos.Z) * yrepeat;
+					rw_bottomtexturemid = (backsector->GetPlaneTexZ(sector_t::floor) - ViewPos.Z) * yrepeat;
 					if (rowoffset < 0 && bottomtexture != NULL)
 					{
 						rowoffset += bottomtexture->GetHeight();
@@ -3047,31 +3047,31 @@ static void R_RenderDecal (side_t *wall, DBaseDecal *decal, drawseg_t *clipper,
 	case RF_RELUPPER:
 		if (curline->linedef->flags & ML_DONTPEGTOP)
 		{
-			zpos = decal->Z + front->GetPlaneTexZF(sector_t::ceiling);
+			zpos = decal->Z + front->GetPlaneTexZ(sector_t::ceiling);
 		}
 		else
 		{
-			zpos = decal->Z + back->GetPlaneTexZF(sector_t::ceiling);
+			zpos = decal->Z + back->GetPlaneTexZ(sector_t::ceiling);
 		}
 		break;
 	case RF_RELLOWER:
 		if (curline->linedef->flags & ML_DONTPEGBOTTOM)
 		{
-			zpos = decal->Z + front->GetPlaneTexZF(sector_t::ceiling);
+			zpos = decal->Z + front->GetPlaneTexZ(sector_t::ceiling);
 		}
 		else
 		{
-			zpos = decal->Z + back->GetPlaneTexZF(sector_t::floor);
+			zpos = decal->Z + back->GetPlaneTexZ(sector_t::floor);
 		}
 		break;
 	case RF_RELMID:
 		if (curline->linedef->flags & ML_DONTPEGBOTTOM)
 		{
-			zpos = decal->Z + front->GetPlaneTexZF(sector_t::floor);
+			zpos = decal->Z + front->GetPlaneTexZ(sector_t::floor);
 		}
 		else
 		{
-			zpos = decal->Z + front->GetPlaneTexZF(sector_t::ceiling);
+			zpos = decal->Z + front->GetPlaneTexZ(sector_t::ceiling);
 		}
 	}
 
diff --git a/src/r_things.cpp b/src/r_things.cpp
index ed77170fd..b930a1e92 100644
--- a/src/r_things.cpp
+++ b/src/r_things.cpp
@@ -678,7 +678,7 @@ void R_DrawVisVoxel(vissprite_t *spr, int minslabz, int maxslabz, short *cliptop
 	}
 
 	// Render the voxel, either directly to the screen or offscreen.
-	R_DrawVoxel(spr->vpos, spr->vang, spr->gpos, spr->angle,
+	R_DrawVoxel(spr->pa.vpos, spr->pa.vang, spr->gpos, spr->angle,
 		spr->xscale, FLOAT2FIXED(spr->yscale), spr->voxel, spr->Style.colormap, cliptop, clipbot,
 		minslabz, maxslabz, flags);
 
@@ -1033,8 +1033,8 @@ void R_ProjectSprite (AActor *thing, int fakeside, F3DFloor *fakefloor, F3DFloor
 			vis->angle -= ang.BAMs();
 		}
 
-		vis->vpos = { (float)ViewPos.X, (float)ViewPos.Y, (float)ViewPos.Z };
-		vis->vang = FAngle((float)ViewAngle.Degrees);
+		vis->pa.vpos = { (float)ViewPos.X, (float)ViewPos.Y, (float)ViewPos.Z };
+		vis->pa.vang = FAngle((float)ViewAngle.Degrees);
 	}
 
 	// killough 3/27/98: save sector for special clipping later
@@ -1284,12 +1284,20 @@ void R_DrawPSprite (pspdef_t* psp, int pspnum, AActor *owner, double sx, double
 	WORD				flip;
 	FTexture*			tex;
 	vissprite_t*		vis;
-	static vissprite_t	avis[NUMPSPRITES];
-	vissprite_t			tempvis;
+	static vissprite_t	avis[NUMPSPRITES + 1];
+	static vissprite_t	*avisp[countof(avis)];
 	bool noaccel;
 
 	assert(pspnum >= 0 && pspnum < NUMPSPRITES);
 
+	if (avisp[0] == NULL)
+	{
+		for (unsigned i = 0; i < countof(avis); ++i)
+		{
+			avisp[i] = &avis[i];
+		}
+	}
+
 	// decide which patch to use
 	if ( (unsigned)psp->sprite >= (unsigned)sprites.Size ())
 	{
@@ -1329,7 +1337,7 @@ void R_DrawPSprite (pspdef_t* psp, int pspnum, AActor *owner, double sx, double
 		return;
 	
 	// store information in a vissprite
-	vis = &tempvis;
+	vis = avisp[NUMPSPRITES];
 	vis->renderflags = owner->renderflags;
 	vis->floorclip = 0;
 
@@ -1499,8 +1507,8 @@ void R_DrawPSprite (pspdef_t* psp, int pspnum, AActor *owner, double sx, double
 		{
 			VisPSpritesX1[pspnum] = x1;
 			VisPSpritesBaseColormap[pspnum] = colormap_to_use;
-			VisPSprites[pspnum] = &avis[pspnum];
-			avis[pspnum] = *vis;
+			VisPSprites[pspnum] = vis;
+			swapvalues(avisp[pspnum], avisp[NUMPSPRITES]);
 			return;
 		}
 	}
diff --git a/src/r_things.h b/src/r_things.h
index 64dcb82b8..97010713a 100644
--- a/src/r_things.h
+++ b/src/r_things.h
@@ -31,6 +31,12 @@
 
 struct vissprite_t
 {
+	struct posang
+	{
+		FVector3 vpos;			// view origin
+		FAngle vang;			// view angle
+	};
+
 	short			x1, x2;
 	FVector3		gpos;			// origin in world coordinates
 	union
@@ -61,16 +67,9 @@ struct vissprite_t
 			fixed_t	xiscale;		// negative if flipped
 		};
 		// Used by wall sprites
-		struct
-		{
-			FWallCoords wallc;
-		};
+		FWallCoords wallc;
 		// Used by voxels
-		struct
-		{
-			FVector3 vpos;			// view origin
-			FAngle vang;			// view angle
-		};
+		posang pa;
 	};
 	sector_t		*heightsec;		// killough 3/27/98: height sector for underwater/fake ceiling
 	sector_t		*sector;		// [RH] sector this sprite is in
@@ -88,7 +87,6 @@ struct vissprite_t
 	int				CurrentPortalUniq; // [ZZ] to identify the portal that this thing is in. used for clipping.
 
 	vissprite_t() {}
-	vissprite_t &vissprite_t::operator= (const vissprite_t &o) { memcpy(this, &o, sizeof *this); return *this; }
 };
 
 struct particle_t;
diff --git a/src/thingdef/thingdef_expression.cpp b/src/thingdef/thingdef_expression.cpp
index 8ca02b422..c888f97d5 100644
--- a/src/thingdef/thingdef_expression.cpp
+++ b/src/thingdef/thingdef_expression.cpp
@@ -3137,7 +3137,7 @@ ExpEmit FxArrayElement::Emit(VMFunctionBuilder *build)
 		{ 
 			shiftbits++;
 		}
-		assert(1 << shiftbits == arraytype->ElementSize && "Element sizes other than power of 2 are not implemented");
+		assert(1u << shiftbits == arraytype->ElementSize && "Element sizes other than power of 2 are not implemented");
 		build->Emit(OP_BOUND, indexv.RegNum, arraytype->ElementCount);
 		if (shiftbits > 0)
 		{
diff --git a/src/v_draw.cpp b/src/v_draw.cpp
index dccbfdc93..c7b62b0a6 100644
--- a/src/v_draw.cpp
+++ b/src/v_draw.cpp
@@ -204,8 +204,7 @@ void DCanvas::DrawTextureParms(FTexture *img, DrawParms &parms)
 
 		// There is not enough precision in the drawing routines to keep the full
 		// precision for y0. :(
-		double dummy;
-		sprtopscreen = modf(y0, &dummy);
+		modf(y0, &sprtopscreen);
 
 		double yscale = parms.destheight / img->GetHeight();
 		double iyscale = 1 / yscale;
diff --git a/src/vectors.h b/src/vectors.h
index 91cf1e962..8b81d05b2 100644
--- a/src/vectors.h
+++ b/src/vectors.h
@@ -781,16 +781,13 @@ Outside comments: A faster version with only 10 (not 24) multiplies.
 	}
 };
 
+#define BAM_FACTOR (90. / 0x40000000)
+
 template<class vec_t>
 struct TAngle
 {
 	vec_t Degrees;
 
-private:
-	const double BAM_FACTOR = (90. / 0x40000000);
-public:
-
-
 	// This is to catch any accidental attempt to assign an angle_t to this type. Any explicit exception will require a type cast.
 	TAngle(int) = delete;
 	TAngle(unsigned int) = delete;
diff --git a/src/version.h b/src/version.h
index c45613b3f..fba8d0786 100644
--- a/src/version.h
+++ b/src/version.h
@@ -72,11 +72,11 @@ const char *GetVersionString();
 // SAVESIG should match SAVEVER.
 
 // MINSAVEVER is the minimum level snapshot version that can be loaded.
-#define MINSAVEVER	4542
+#define MINSAVEVER	4543
 
 // Use 4500 as the base git save version, since it's higher than the
 // SVN revision ever got.
-#define SAVEVER 4542
+#define SAVEVER 4543
 
 #define SAVEVERSTRINGIFY2(x) #x
 #define SAVEVERSTRINGIFY(x) SAVEVERSTRINGIFY2(x)
diff --git a/wadsrc/static/menudef.txt b/wadsrc/static/menudef.txt
index cf01173e6..0820b4d69 100644
--- a/wadsrc/static/menudef.txt
+++ b/wadsrc/static/menudef.txt
@@ -1527,9 +1527,9 @@ OptionValue MidiDevices
 OptionMenu SoundOptions
 {
 	Title "$SNDMNU_TITLE"
-	Slider "$SNDMNU_SFXVOLUME",			"snd_sfxvolume", 0, 1, 0.05
-	Slider "$SNDMNU_MENUVOLUME",		"snd_menuvolume", 0, 1, 0.05
-	Slider "$SNDMNU_MUSICVOLUME",		"snd_musicvolume", 0, 1, 0.05
+	Slider "$SNDMNU_SFXVOLUME",			"snd_sfxvolume", 0, 1, 0.05, 2
+	Slider "$SNDMNU_MENUVOLUME",		"snd_menuvolume", 0, 1, 0.05, 2
+	Slider "$SNDMNU_MUSICVOLUME",		"snd_musicvolume", 0, 1, 0.05, 2
 	Option "$SNDMNU_MIDIDEVICE",		"snd_mididevice", "MidiDevices"
 	StaticText " "
 	Option "$SNDMNU_UNDERWATERREVERB",	"snd_waterreverb", "OnOff"
diff --git a/wadsrc/static/xlat/base.txt b/wadsrc/static/xlat/base.txt
index d125c4903..8a99ba318 100644
--- a/wadsrc/static/xlat/base.txt
+++ b/wadsrc/static/xlat/base.txt
@@ -209,10 +209,10 @@ include "xlat/defines.i"
 204 = USE,		Ceiling_LowerToHighestFloor (tag, C_SLOW)
 205 = USE|REP,		Ceiling_LowerToLowest (tag, C_SLOW)
 206 = USE|REP,		Ceiling_LowerToHighestFloor (tag, C_SLOW)
-207 = WALK|MONST,	Teleport_NoFog (0, 0, tag, 1)
-208 = WALK|REP|MONST,	Teleport_NoFog (0, 0, tag, 1)
-209 = USE|MONST,	Teleport_NoFog (0, 0, tag, 1)
-210 = USE|REP|MONST,	Teleport_NoFog (0, 0, tag, 1)
+207 = WALK|MONST,	Teleport_NoFog (0, 2, tag, 1)
+208 = WALK|REP|MONST,	Teleport_NoFog (0, 2, tag, 1)
+209 = USE|MONST,	Teleport_NoFog (0, 2, tag, 1)
+210 = USE|REP|MONST,	Teleport_NoFog (0, 2, tag, 1)
 211 = USE|REP,		Plat_ToggleCeiling (tag)
 212 = WALK|REP,		Plat_ToggleCeiling (tag)
 213 = 0,		Transfer_FloorLight (tag)
@@ -270,8 +270,8 @@ include "xlat/defines.i"
 265 = MONWALK|REP,	Teleport_Line (tag, tag, 1)
 266 = MONWALK,		Teleport_Line (tag, tag, 0)
 267 = MONWALK|REP,	Teleport_Line (tag, tag, 0)
-268 = MONWALK,		Teleport_NoFog (0, 0, tag, 1)
-269 = MONWALK|REP,	Teleport_NoFog (0, 0, tag, 1)
+268 = MONWALK,		Teleport_NoFog (0, 2, tag, 1)
+269 = MONWALK|REP,	Teleport_NoFog (0, 2, tag, 1)
 
 /****** MBF linetypes ******/