diff --git a/game-music-emu/gme/gme_types.h b/game-music-emu/gme/gme_types.h
old mode 100644
new mode 100755
index 06226f4aa1..bd3670e64b
--- a/game-music-emu/gme/gme_types.h
+++ b/game-music-emu/gme/gme_types.h
@@ -1,11 +1,13 @@
 #ifndef GME_TYPES_H
 #define GME_TYPES_H
 
-/*
- * This is a default gme_types.h for use when *not* using
- * CMake.  If CMake is in use gme_types.h.in will be
- * processed instead.
+/* CMake will either define the following to 1, or #undef it,
+ * depending on the options passed to CMake.  This is used to
+ * conditionally compile in the various emulator types.
+ *
+ * See gme_type_list() in gme.cpp
  */
+
 #define USE_GME_AY
 #define USE_GME_GBS
 #define USE_GME_GYM
diff --git a/src/actor.h b/src/actor.h
index 03891c8ba5..60e1521322 100644
--- a/src/actor.h
+++ b/src/actor.h
@@ -33,6 +33,7 @@
 // States are tied to finite states are tied to animation frames.
 #include "info.h"
 
+#include <forward_list>
 #include "doomdef.h"
 #include "textures/textures.h"
 #include "r_data/renderstyle.h"
@@ -561,8 +562,14 @@ inline T *GetDefault ()
 
 struct line_t;
 struct secplane_t;
+struct msecnode_t;
 struct FStrifeDialogueNode;
 
+struct FLinkContext
+{
+	msecnode_t *sector_list = nullptr;
+};
+
 class DDropItem : public DObject
 {
 	DECLARE_CLASS(DDropItem, DObject)
@@ -1035,6 +1042,7 @@ public:
 	struct sector_t	*ceilingsector;
 	FTextureID		ceilingpic;			// contacted sec ceilingpic
 	double			radius, Height;		// for movement checking
+	double			renderradius;
 
 	double			projectilepassheight;	// height for clipping projectile movement against this actor
 	
@@ -1141,6 +1149,8 @@ public:
 	struct msecnode_t	*touching_sectorlist;				// phares 3/14/98
 	struct msecnode_t	*render_sectorlist;		// same for cross-sectorportal rendering
 	struct portnode_t	*render_portallist;		// and for cross-lineportal
+	std::forward_list<sector_t*>* touching_render_sectors; // this is the list of sectors that this thing interesects with it's max(radius, renderradius).
+	int validcount;
 
 
 	TObjPtr<AInventory>	Inventory;		// [RH] This actor's inventory
@@ -1216,8 +1226,8 @@ private:
 	bool FixMapthingPos();
 
 public:
-	void LinkToWorld (bool spawningmapthing=false, sector_t *sector = NULL);
-	void UnlinkFromWorld ();
+	void LinkToWorld (FLinkContext *ctx, bool spawningmapthing=false, sector_t *sector = NULL);
+	void UnlinkFromWorld(FLinkContext *ctx);
 	void AdjustFloorClip ();
 	bool InStateSequence(FState * newstate, FState * basestate);
 	int GetTics(FState * newstate);
diff --git a/src/b_game.cpp b/src/b_game.cpp
index 9d6419787e..b99b97a609 100644
--- a/src/b_game.cpp
+++ b/src/b_game.cpp
@@ -118,23 +118,24 @@ void FCajunMaster::Main ()
 	}
 
 	//Check if player should go observer. Or un observe
+	FLinkContext ctx;
 	if (bot_observer && !observer && !netgame)
 	{
 		Printf ("%s is now observer\n", players[consoleplayer].userinfo.GetName());
 		observer = true;
-		players[consoleplayer].mo->UnlinkFromWorld ();
+		players[consoleplayer].mo->UnlinkFromWorld (&ctx);
 		players[consoleplayer].mo->flags = MF_DROPOFF|MF_NOBLOCKMAP|MF_NOCLIP|MF_NOTDMATCH|MF_NOGRAVITY|MF_FRIENDLY;
 		players[consoleplayer].mo->flags2 |= MF2_FLY;
-		players[consoleplayer].mo->LinkToWorld ();
+		players[consoleplayer].mo->LinkToWorld (&ctx);
 	}
 	else if (!bot_observer && observer && !netgame) //Go back
 	{
 		Printf ("%s returned to the fray\n", players[consoleplayer].userinfo.GetName());
 		observer = false;
-		players[consoleplayer].mo->UnlinkFromWorld ();
+		players[consoleplayer].mo->UnlinkFromWorld (&ctx);
 		players[consoleplayer].mo->flags = MF_SOLID|MF_SHOOTABLE|MF_DROPOFF|MF_PICKUP|MF_NOTDMATCH|MF_FRIENDLY;
 		players[consoleplayer].mo->flags2 &= ~MF2_FLY;
-		players[consoleplayer].mo->LinkToWorld ();
+		players[consoleplayer].mo->LinkToWorld (&ctx);
 	}
 }
 
diff --git a/src/c_console.cpp b/src/c_console.cpp
index 0a324eb8ff..faeec0a68b 100644
--- a/src/c_console.cpp
+++ b/src/c_console.cpp
@@ -1573,7 +1573,7 @@ static bool C_HandleKey (event_t *ev, FCommandBuffer &buffer)
 				static TArray<char> command;
 				const size_t length = buffer.Text.Len();
 
-				command.Resize(length + 1);
+				command.Resize(unsigned(length + 1));
 				memcpy(&command[0], buffer.Text.GetChars(), length);
 				command[length] = '\0';
 
diff --git a/src/compatibility.cpp b/src/compatibility.cpp
index 60f9d8ad6a..742f43eeed 100644
--- a/src/compatibility.cpp
+++ b/src/compatibility.cpp
@@ -533,8 +533,9 @@ void SetCompatibilityParams()
 					if (CompatParams[i+1] < numsectors)
 					{
 						sector_t *sec = &sectors[CompatParams[i+1]];
-						sec->floorplane.ChangeHeight(CompatParams[i+2]);
-						sec->ChangePlaneTexZ(sector_t::floor, CompatParams[i+2] / 65536.);
+						const double delta = CompatParams[i + 2] / 65536.0;
+						sec->floorplane.ChangeHeight(delta);
+						sec->ChangePlaneTexZ(sector_t::floor, delta);
 					}
 					i += 3;
 					break;
diff --git a/src/fragglescript/t_func.cpp b/src/fragglescript/t_func.cpp
index 7cd599b11d..4670807e72 100644
--- a/src/fragglescript/t_func.cpp
+++ b/src/fragglescript/t_func.cpp
@@ -2677,13 +2677,13 @@ void FParser::SF_PlayerWeapon()
 		if (playernum==-1) return;
 		if (weaponnum<0 || weaponnum>9)
 		{
-			script_error("weaponnum out of range! %s\n", weaponnum);
+			script_error("weaponnum out of range! %d\n", weaponnum);
 			return;
 		}
 		PClassWeapon * ti = static_cast<PClassWeapon *>(PClass::FindActor(WeaponNames[weaponnum]));
 		if (!ti)
 		{
-			script_error("incompatibility in playerweapon\n", weaponnum);
+			script_error("incompatibility in playerweapon %d\n", weaponnum);
 			return;
 		}
 		
@@ -2758,13 +2758,13 @@ void FParser::SF_PlayerSelectedWeapon()
 
 			if (weaponnum<0 || weaponnum>=9)
 			{
-				script_error("weaponnum out of range! %s\n", weaponnum);
+				script_error("weaponnum out of range! %d\n", weaponnum);
 				return;
 			}
 			PClassWeapon * ti = static_cast<PClassWeapon *>(PClass::FindActor(WeaponNames[weaponnum]));
 			if (!ti)
 			{
-				script_error("incompatibility in playerweapon\n", weaponnum);
+				script_error("incompatibility in playerweapon %d\n", weaponnum);
 				return;
 			}
 
diff --git a/src/g_doomedmap.cpp b/src/g_doomedmap.cpp
index b3aa966c30..6d7ba6796f 100644
--- a/src/g_doomedmap.cpp
+++ b/src/g_doomedmap.cpp
@@ -246,7 +246,7 @@ void FMapInfoParser::ParseDoomEdNums()
 	}
 	if (error > 0)
 	{
-		sc.ScriptError("%d errors encountered in DoomEdNum definition");
+		sc.ScriptError("%d errors encountered in DoomEdNum definition", error);
 	}
 }
 
diff --git a/src/g_inventory/a_pickups.cpp b/src/g_inventory/a_pickups.cpp
index 42af5e87f7..f019a80534 100644
--- a/src/g_inventory/a_pickups.cpp
+++ b/src/g_inventory/a_pickups.cpp
@@ -636,14 +636,9 @@ void AInventory::BecomeItem ()
 {
 	if (!(flags & (MF_NOBLOCKMAP|MF_NOSECTOR)))
 	{
-		UnlinkFromWorld ();
-		if (sector_list)
-		{
-			P_DelSeclist (sector_list);
-			sector_list = NULL;
-		}
+		UnlinkFromWorld (nullptr);
 		flags |= MF_NOBLOCKMAP|MF_NOSECTOR;
-		LinkToWorld ();
+		LinkToWorld (nullptr);
 	}
 	RemoveFromHash ();
 	flags &= ~MF_SPECIAL;
@@ -674,9 +669,9 @@ void AInventory::BecomePickup ()
 	}
 	if (flags & (MF_NOBLOCKMAP|MF_NOSECTOR))
 	{
-		UnlinkFromWorld ();
+		UnlinkFromWorld (nullptr);
 		flags &= ~(MF_NOBLOCKMAP|MF_NOSECTOR);
-		LinkToWorld ();
+		LinkToWorld (nullptr);
 		P_FindFloorCeiling (this);
 	}
 	flags = (GetDefault()->flags | MF_DROPPED) & ~MF_COUNTITEM;
diff --git a/src/g_level.cpp b/src/g_level.cpp
index 4bb78461af..321810589c 100644
--- a/src/g_level.cpp
+++ b/src/g_level.cpp
@@ -1196,8 +1196,7 @@ void G_StartTravel ()
 			// Only living players travel. Dead ones get a new body on the new level.
 			if (players[i].health > 0)
 			{
-				pawn->UnlinkFromWorld ();
-				P_DelSector_List ();
+				pawn->UnlinkFromWorld (nullptr);
 				int tid = pawn->tid;	// Save TID
 				pawn->RemoveFromHash ();
 				pawn->tid = tid;		// Restore TID (but no longer linked into the hash chain)
@@ -1206,8 +1205,7 @@ void G_StartTravel ()
 				for (inv = pawn->Inventory; inv != NULL; inv = inv->Inventory)
 				{
 					inv->ChangeStatNum (STAT_TRAVELLING);
-					inv->UnlinkFromWorld ();
-					P_DelSector_List ();
+					inv->UnlinkFromWorld (nullptr);
 				}
 			}
 		}
@@ -1304,7 +1302,7 @@ void G_FinishTravel ()
 		{
 			pawndup->Destroy();
 		}
-		pawn->LinkToWorld ();
+		pawn->LinkToWorld (nullptr);
 		pawn->ClearInterpolation();
 		pawn->AddToHash ();
 		pawn->SetState(pawn->SpawnState);
@@ -1313,7 +1311,7 @@ void G_FinishTravel ()
 		for (inv = pawn->Inventory; inv != NULL; inv = inv->Inventory)
 		{
 			inv->ChangeStatNum (STAT_INVENTORY);
-			inv->LinkToWorld ();
+			inv->LinkToWorld (nullptr);
 			inv->Travelled ();
 		}
 		if (ib_compatflags & BCOMPATF_RESETPLAYERSPEED)
diff --git a/src/g_pch.h b/src/g_pch.h
index a22649815a..2c3676f5ac 100644
--- a/src/g_pch.h
+++ b/src/g_pch.h
@@ -12,6 +12,7 @@
 #include <zlib.h>
 #include <new>
 #include <algorithm>
+#include <forward_list>
 #include <sys/stat.h>
 #include <sys/types.h>
 #include <cassert>
diff --git a/src/g_shared/a_movingcamera.cpp b/src/g_shared/a_movingcamera.cpp
index a1ffe5dc60..c09d93fd55 100644
--- a/src/g_shared/a_movingcamera.cpp
+++ b/src/g_shared/a_movingcamera.cpp
@@ -364,6 +364,7 @@ void APathFollower::NewNode ()
 bool APathFollower::Interpolate ()
 {
 	DVector3 dpos(0, 0, 0);
+	FLinkContext ctx;
 
 	if ((args[2] & 8) && Time > 0.f)
 	{
@@ -372,7 +373,7 @@ bool APathFollower::Interpolate ()
 
 	if (CurrNode->Next==NULL) return false;
 
-	UnlinkFromWorld ();
+	UnlinkFromWorld (&ctx);
 	DVector3 newpos;
 	if (args[2] & 1)
 	{	// linear
@@ -389,7 +390,7 @@ bool APathFollower::Interpolate ()
 		newpos.Z = Splerp(PrevNode->Z(), CurrNode->Z(), CurrNode->Next->Z(), CurrNode->Next->Next->Z());
 	}
 	SetXYZ(newpos);
-	LinkToWorld ();
+	LinkToWorld (&ctx);
 
 	if (args[2] & 6)
 	{
@@ -541,10 +542,11 @@ void AActorMover::Activate (AActor *activator)
 	tracer->flags |= MF_NOGRAVITY;
 	if (args[2] & 128)
 	{
-		tracer->UnlinkFromWorld ();
+		FLinkContext ctx;
+		tracer->UnlinkFromWorld (&ctx);
 		tracer->flags |= MF_NOBLOCKMAP;
 		tracer->flags &= ~MF_SOLID;
-		tracer->LinkToWorld ();
+		tracer->LinkToWorld (&ctx);
 	}
 	if (tracer->flags3 & MF3_ISMONSTER)
 	{
@@ -563,9 +565,10 @@ void AActorMover::Deactivate (AActor *activator)
 		Super::Deactivate (activator);
 		if (tracer != NULL)
 		{
-			tracer->UnlinkFromWorld ();
+			FLinkContext ctx;
+			tracer->UnlinkFromWorld (&ctx);
 			tracer->flags = ActorFlags::FromInt (special1);
-			tracer->LinkToWorld ();
+			tracer->LinkToWorld (&ctx);
 			tracer->flags2 = ActorFlags2::FromInt (special2);
 		}
 	}
diff --git a/src/p_actionfunctions.cpp b/src/p_actionfunctions.cpp
index 13a347ef2c..4136ec3313 100644
--- a/src/p_actionfunctions.cpp
+++ b/src/p_actionfunctions.cpp
@@ -1454,10 +1454,11 @@ enum CM_Flags
 	CMF_OFFSETPITCH = 32,
 	CMF_SAVEPITCH = 64,
 
-	CMF_ABSOLUTEANGLE = 128
+	CMF_ABSOLUTEANGLE = 128,
+	CMF_BADPITCH = 256
 };
 
-DEFINE_ACTION_FUNCTION(AActor, A_CustomMissile)
+DEFINE_ACTION_FUNCTION(AActor, A_SpawnProjectile)
 {
 	PARAM_SELF_PROLOGUE(AActor);
 	PARAM_CLASS		(ti, AActor);
@@ -1525,6 +1526,7 @@ DEFINE_ACTION_FUNCTION(AActor, A_CustomMissile)
 					}
 					missilespeed = fabs(Pitch.Cos() * missile->Speed);
 					missile->Vel.Z = Pitch.Sin() * missile->Speed;
+					if (!(flags & CMF_BADPITCH)) missile->Vel.Z *= -1;
 				}
 				else
 				{
@@ -1831,7 +1833,7 @@ static void AimBulletMissile(AActor *proj, AActor *puff, int flags, bool temp, b
 			// Aim for the base of the puff as that's where blood puffs will spawn... roughly.
 
 			A_Face(proj, puff, 0., 0., 0., 0., 1);
-			proj->Vel3DFromAngle(-proj->Angles.Pitch, proj->Speed);
+			proj->Vel3DFromAngle(proj->Angles.Pitch, proj->Speed);
 
 			if (!temp)
 			{
@@ -1986,7 +1988,7 @@ enum FP_Flags
 	FPF_TRANSFERTRANSLATION = 2,
 	FPF_NOAUTOAIM = 4,
 };
-DEFINE_ACTION_FUNCTION(AStateProvider, A_FireCustomMissile)
+DEFINE_ACTION_FUNCTION(AStateProvider, A_FireProjectile)
 {
 	PARAM_ACTION_PROLOGUE(AStateProvider);
 	PARAM_CLASS		(ti, AActor);
@@ -2300,7 +2302,7 @@ DEFINE_ACTION_FUNCTION(AActor, A_CustomRailgun)
 		// We probably won't hit the target, but aim at it anyway so we don't look stupid.
 		DVector2 xydiff = self->Vec2To(self->target);
 		double zdiff = self->target->Center() - self->Center() - self->Floorclip;
-		self->Angles.Pitch = VecToAngle(xydiff.Length(), zdiff);
+		self->Angles.Pitch = -VecToAngle(xydiff.Length(), zdiff);
 	}
 	// Let the aim trail behind the player
 	if (aim)
@@ -5227,12 +5229,13 @@ void A_Weave(AActor *self, int xyspeed, int zspeed, double xydist, double zdist)
 		}
 		else
 		{
-			self->UnlinkFromWorld ();
+			FLinkContext ctx;
+			self->UnlinkFromWorld (&ctx);
 			self->flags |= MF_NOBLOCKMAP;
 			// We need to do portal offsetting here explicitly, because SetXY cannot do that.
 			newpos -= self->Pos().XY();
 			self->SetXY(self->Vec2Offset(newpos.X, newpos.Y));
-			self->LinkToWorld ();
+			self->LinkToWorld (&ctx);
 		}
 		self->WeaveIndexXY = weaveXY;
 	}
@@ -6688,10 +6691,10 @@ DEFINE_ACTION_FUNCTION(AActor, A_FaceMovementDirection)
 	{
 		DAngle current = mobj->Angles.Pitch;
 		const DVector2 velocity = mobj->Vel.XY();
-		DAngle pitch = VecToAngle(velocity.Length(), mobj->Vel.Z);
+		DAngle pitch = -VecToAngle(velocity.Length(), mobj->Vel.Z);
 		if (pitchlimit > 0)
 		{
-			DAngle pdelta = deltaangle(-current, pitch);
+			DAngle pdelta = deltaangle(current, pitch);
 
 			if (fabs(pdelta) > pitchlimit)
 			{
@@ -6860,17 +6863,18 @@ DEFINE_ACTION_FUNCTION(AActor, A_SetSize)
 	double oldradius = self->radius;
 	double oldheight = self->Height;
 
-	self->UnlinkFromWorld();
+	FLinkContext ctx;
+	self->UnlinkFromWorld(&ctx);
 	self->radius = newradius;
 	self->Height = newheight;
-	self->LinkToWorld();
+	self->LinkToWorld(&ctx);
 
 	if (testpos && !P_TestMobjLocation(self))
 	{
-		self->UnlinkFromWorld();
+		self->UnlinkFromWorld(&ctx);
 		self->radius = oldradius;
 		self->Height = oldheight;
-		self->LinkToWorld();
+		self->LinkToWorld(&ctx);
 		ACTION_RETURN_BOOL(false);
 	}
 
diff --git a/src/p_interaction.cpp b/src/p_interaction.cpp
index 9aa178e64d..102142d38f 100644
--- a/src/p_interaction.cpp
+++ b/src/p_interaction.cpp
@@ -1545,7 +1545,7 @@ dopain:
 				target->SetState (target->SeeState);
 			}
 		}
-		else if (source != target->target && target->OkayToSwitchTarget (source))
+		else if ((damage > 0 || fakedPain) && source != target->target && target->OkayToSwitchTarget (source))
 		{
 			// Target actor is not intent on another actor,
 			// so make him chase after source
diff --git a/src/p_local.h b/src/p_local.h
index ef702e0188..25b465d26a 100644
--- a/src/p_local.h
+++ b/src/p_local.h
@@ -245,10 +245,6 @@ AActor *P_RoughMonsterSearch (AActor *mo, int distance, bool onlyseekable=false,
 //
 
 
-// If "floatok" true, move would be ok
-// if within "tmfloorz - tmceilingz".
-extern msecnode_t		*sector_list;		// phares 3/16/98
-
 struct spechit_t
 {
 	line_t *line;
@@ -395,11 +391,12 @@ enum
 int	P_RadiusAttack (AActor *spot, AActor *source, int damage, int distance, 
 						FName damageType, int flags, int fulldamagedistance=0);
 
-void	P_DelSector_List();
 void	P_DelSeclist(msecnode_t *);							// phares 3/16/98
 msecnode_t *P_AddSecnode(sector_t *s, AActor *thing, msecnode_t *nextnode, msecnode_t *&sec_thinglist);
 msecnode_t*	P_DelSecnode(msecnode_t *, msecnode_t *sector_t::*head);
-void	P_CreateSecNodeList(AActor*);		// phares 3/14/98
+msecnode_t *P_CreateSecNodeList(AActor *thing, msecnode_t *sector_list);
+void P_LinkRenderSectors(AActor*);
+void P_UnlinkRenderSectors(AActor*);
 double	P_GetMoveFactor(const AActor *mo, double *frictionp);	// phares  3/6/98
 double		P_GetFriction(const AActor *mo, double *frictionfactor);
 
diff --git a/src/p_map.cpp b/src/p_map.cpp
index f889069f18..9dcd165c2f 100644
--- a/src/p_map.cpp
+++ b/src/p_map.cpp
@@ -24,6 +24,7 @@
 
 #include <stdlib.h>
 #include <math.h>
+#include <algorithm>
 
 #include "templates.h"
 
@@ -81,9 +82,6 @@ static FRandom pr_crunch("DoCrunch");
 TArray<spechit_t> spechit;
 TArray<spechit_t> portalhit;
 
-// Temporary holder for thing_sectorlist threads
-msecnode_t* sector_list = NULL;		// phares 3/16/98
-
 //==========================================================================
 //
 // FindRefPoint
@@ -2389,10 +2387,11 @@ bool P_TryMove(AActor *thing, const DVector2 &pos,
 			FLinePortal *port = ld->getPortal();
 			if (port->mType == PORTT_LINKED)
 			{
-				thing->UnlinkFromWorld();
+				FLinkContext ctx;
+				thing->UnlinkFromWorld(&ctx);
 				thing->SetXY(tm.pos + port->mDisplacement);
 				thing->Prev += port->mDisplacement;
-				thing->LinkToWorld();
+				thing->LinkToWorld(&ctx);
 				P_FindFloorCeiling(thing);
 				portalcrossed = true;
 				tm.portalstep = false;
@@ -2413,11 +2412,12 @@ bool P_TryMove(AActor *thing, const DVector2 &pos,
 					thing->flags6 &= ~MF6_INTRYMOVE;
 					return false;
 				}
-				thing->UnlinkFromWorld();
+				FLinkContext ctx;
+				thing->UnlinkFromWorld(&ctx);
 				thing->SetXYZ(pos);
 				P_TranslatePortalVXVY(ld, thing->Vel.X, thing->Vel.Y);
 				P_TranslatePortalAngle(ld, thing->Angles.Yaw);
-				thing->LinkToWorld();
+				thing->LinkToWorld(&ctx);
 				P_FindFloorCeiling(thing);
 				thing->ClearInterpolation();
 				portalcrossed = true;
@@ -2458,7 +2458,8 @@ bool P_TryMove(AActor *thing, const DVector2 &pos,
 	if (!portalcrossed)
 	{
 		// the move is ok, so link the thing into its new position
-		thing->UnlinkFromWorld();
+		FLinkContext ctx;
+		thing->UnlinkFromWorld(&ctx);
 
 		oldsector = thing->Sector;
 		thing->floorz = tm.floorz;
@@ -2471,7 +2472,7 @@ bool P_TryMove(AActor *thing, const DVector2 &pos,
 		thing->ceilingsector = tm.ceilingsector;
 		thing->SetXY(pos);
 
-		thing->LinkToWorld();
+		thing->LinkToWorld(&ctx);
 	}
 
 	if (thing->flags2 & MF2_FLOORCLIP)
@@ -2564,13 +2565,14 @@ bool P_TryMove(AActor *thing, const DVector2 &pos,
 	// If the actor stepped through a ceiling portal we need to reacquire the actual position info after the transition
 	if (tm.portalstep)
 	{
+		FLinkContext ctx;
 		DVector3 oldpos = thing->Pos();
-		thing->UnlinkFromWorld();
+		thing->UnlinkFromWorld(&ctx);
 		thing->SetXYZ(thing->PosRelative(thing->Sector->GetOppositePortalGroup(sector_t::ceiling)));
 		thing->Prev = thing->Pos() - oldpos;
 		thing->Sector = P_PointInSector(thing->Pos());
 		thing->PrevPortalGroup = thing->Sector->PortalGroup;
-		thing->LinkToWorld();
+		thing->LinkToWorld(&ctx);
 
 		P_FindFloorCeiling(thing);
 	}
@@ -4920,10 +4922,10 @@ void P_RailAttack(FRailParams *p)
 	}
 
 	AActor *source = p->source;
-	DAngle pitch = -source->Angles.Pitch + p->pitchoffset;
+	DAngle pitch = source->Angles.Pitch + p->pitchoffset;
 	DAngle angle = source->Angles.Yaw + p->angleoffset;
 
-	DVector3 vec(DRotator(pitch, angle, angle));
+	DVector3 vec(DRotator(-pitch, angle, angle));
 	double shootz = source->Center() - source->FloatSpeed + p->offset_z;
 
 	if (!(p->flags & RAF_CENTERZ))
@@ -6531,23 +6533,6 @@ msecnode_t *P_DelSecnode(msecnode_t *node, msecnode_t *sector_t::*listhead)
 	return NULL;
 } 														// phares 3/13/98
 
-//=============================================================================
-//
-// P_DelSector_List
-//
-// Deletes the sector_list and NULLs it.
-//
-//=============================================================================
-
-void P_DelSector_List()
-{
-	if (sector_list != NULL)
-	{
-		P_DelSeclist(sector_list);
-		sector_list = NULL;
-	}
-}
-
 //=============================================================================
 //
 // P_DelSeclist
@@ -6571,7 +6556,7 @@ void P_DelSeclist(msecnode_t *node)
 //
 //=============================================================================
 
-void P_CreateSecNodeList(AActor *thing)
+msecnode_t *P_CreateSecNodeList(AActor *thing, msecnode_t *sector_list)
 {
 	msecnode_t *node;
 
@@ -6637,6 +6622,103 @@ void P_CreateSecNodeList(AActor *thing)
 			node = node->m_tnext;
 		}
 	}
+	return sector_list;
+}
+
+
+//=============================================================================
+//
+// P_LinkRenderSectors
+//
+// Alters/creates the list of touched sectors for thing's render radius.
+//
+//=============================================================================
+
+void P_LinkRenderSectors(AActor* thing)
+{
+	// if this thing has RenderStyle None, don't link it anywhere.
+	if (thing->renderradius >= 0)
+	{
+		FBoundingBox box(thing->X(), thing->Y(), std::max(thing->radius, thing->renderradius));
+		FBlockLinesIterator it(box);
+		line_t *ld;
+
+		// add to surrounding sectors
+		while ((ld = it.Next()))
+		{
+			if (!box.inRange(ld) || box.BoxOnLineSide(ld) != -1)
+				continue;
+
+			// 
+			// create necessary lists.
+			if (!thing->touching_render_sectors) thing->touching_render_sectors = new std::forward_list<sector_t*>();
+
+			//
+			if (ld->frontsector != thing->Sector)
+			{
+				if (std::find(thing->touching_render_sectors->begin(), thing->touching_render_sectors->end(), ld->frontsector) == thing->touching_render_sectors->end())
+					thing->touching_render_sectors->push_front(ld->frontsector);
+				if (!ld->frontsector->touching_render_things) ld->frontsector->touching_render_things = new std::forward_list<AActor*>();
+				ld->frontsector->touching_render_things->push_front(thing);
+			}
+
+			if (ld->backsector && ld->backsector != thing->Sector)
+			{
+				if (std::find(thing->touching_render_sectors->begin(), thing->touching_render_sectors->end(), ld->backsector) == thing->touching_render_sectors->end())
+					thing->touching_render_sectors->push_front(ld->backsector);
+				if (!ld->backsector->touching_render_things) ld->backsector->touching_render_things = new std::forward_list<AActor*>();
+				ld->backsector->touching_render_things->push_front(thing);
+			}
+		}
+	}
+
+	// add to own sector
+	if (!thing->Sector->touching_render_things) thing->Sector->touching_render_things = new std::forward_list<AActor*>();
+	thing->Sector->touching_render_things->push_front(thing);
+}
+
+
+//=============================================================================
+//
+// P_UnlinkRenderSectors
+//
+// Reverses P_LinkRenderSectors.
+//
+//=============================================================================
+
+void P_UnlinkRenderSectors(AActor* thing)
+{
+	if (thing->renderradius >= 0)
+	{
+		if (thing->touching_render_sectors)
+		{
+			for (auto sec : *thing->touching_render_sectors)
+			{
+				if (sec->touching_render_things)
+				{
+					sec->touching_render_things->remove(thing);
+					if (sec->touching_render_things->empty())
+					{
+						delete sec->touching_render_things;
+						sec->touching_render_things = NULL;
+					}
+				}
+			}
+
+			delete thing->touching_render_sectors;
+			thing->touching_render_sectors = NULL;
+		}
+	}
+
+	if (thing->Sector->touching_render_things)
+	{
+		thing->Sector->touching_render_things->remove(thing);
+		if (thing->Sector->touching_render_things->empty())
+		{
+			delete thing->Sector->touching_render_things;
+			thing->Sector->touching_render_things = NULL;
+		}
+	}
 }
 
 
diff --git a/src/p_maputl.cpp b/src/p_maputl.cpp
index d676e966cc..d7d5fd6588 100644
--- a/src/p_maputl.cpp
+++ b/src/p_maputl.cpp
@@ -242,9 +242,9 @@ void P_LineOpening (FLineOpening &open, AActor *actor, const line_t *linedef, co
 //
 //==========================================================================
 
-void AActor::UnlinkFromWorld ()
+void AActor::UnlinkFromWorld (FLinkContext *ctx)
 {
-	sector_list = NULL;
+	if (ctx != nullptr) ctx->sector_list = nullptr;
 	if (!(flags & MF_NOSECTOR))
 	{
 		// invisible things don't need to be in sector list
@@ -275,8 +275,11 @@ void AActor::UnlinkFromWorld ()
 			// If this Thing is being removed entirely, then the calling
 			// routine will clear out the nodes in sector_list.
 
-			sector_list = touching_sectorlist;
+			if (ctx != nullptr) ctx->sector_list = touching_sectorlist;
+			else P_DelSeclist(touching_sectorlist);
 			touching_sectorlist = NULL; //to be restored by P_SetThingPosition
+
+			P_UnlinkRenderSectors(this);
 		}
 	}
 		
@@ -388,7 +391,7 @@ bool AActor::FixMapthingPos()
 DEFINE_ACTION_FUNCTION(AActor, UnlinkFromWorld)
 {
 	PARAM_SELF_PROLOGUE(AActor);
-	self->UnlinkFromWorld();
+	self->UnlinkFromWorld(nullptr); // fixme
 	return 0;
 }
 
@@ -401,7 +404,7 @@ DEFINE_ACTION_FUNCTION(AActor, UnlinkFromWorld)
 //
 //==========================================================================
 
-void AActor::LinkToWorld(bool spawningmapthing, sector_t *sector)
+void AActor::LinkToWorld(FLinkContext *ctx, bool spawningmapthing, sector_t *sector)
 {
 	bool spawning = spawningmapthing;
 
@@ -453,9 +456,9 @@ void AActor::LinkToWorld(bool spawningmapthing, sector_t *sector)
 		// When a node is deleted, its sector links (the links starting
 		// at sector_t->touching_thinglist) are broken. When a node is
 		// added, new sector links are created.
-		P_CreateSecNodeList(this);
-		touching_sectorlist = sector_list;	// Attach to thing
-		sector_list = NULL;		// clear for next time
+		touching_sectorlist = P_CreateSecNodeList(this, ctx != nullptr? ctx->sector_list : nullptr);	// Attach to thing
+
+		P_LinkRenderSectors(this);
 	}
 
 
@@ -518,15 +521,16 @@ void AActor::LinkToWorld(bool spawningmapthing, sector_t *sector)
 DEFINE_ACTION_FUNCTION(AActor, LinkToWorld)
 {
 	PARAM_SELF_PROLOGUE(AActor);
-	self->LinkToWorld();
+	self->LinkToWorld(nullptr);	// fixme
 	return 0;
 }
 
 void AActor::SetOrigin(double x, double y, double z, bool moving)
 {
-	UnlinkFromWorld ();
+	FLinkContext ctx;
+	UnlinkFromWorld (&ctx);
 	SetXYZ(x, y, z);
-	LinkToWorld ();
+	LinkToWorld (&ctx);
 	P_FindFloorCeiling(this, FFCF_ONLYSPAWNPOS);
 	if (!moving) ClearInterpolation();
 }
diff --git a/src/p_mobj.cpp b/src/p_mobj.cpp
index b527bf6813..1955f6b4ef 100644
--- a/src/p_mobj.cpp
+++ b/src/p_mobj.cpp
@@ -204,6 +204,7 @@ DEFINE_FIELD(AActor, ceilingsector)
 DEFINE_FIELD(AActor, ceilingpic)
 DEFINE_FIELD(AActor, Height)
 DEFINE_FIELD(AActor, radius)
+DEFINE_FIELD(AActor, renderradius)
 DEFINE_FIELD(AActor, projectilepassheight)
 DEFINE_FIELD(AActor, tics)
 DEFINE_FIELD_NAMED(AActor, state, curstate)		// clashes with type 'state'.
@@ -373,6 +374,7 @@ void AActor::Serialize(FSerializer &arc)
 		A("floorsector", floorsector)
 		A("ceilingsector", ceilingsector)
 		A("radius", radius)
+		A("renderradius", renderradius)
 		A("height", Height)
 		A("ppassheight", projectilepassheight)
 		A("vel", Vel)
@@ -510,7 +512,9 @@ void AActor::Serialize(FSerializer &arc)
 void AActor::PostSerialize()
 {
 	touching_sectorlist = NULL;
-	LinkToWorld(false, Sector);
+	if (touching_render_sectors) delete touching_render_sectors;
+	touching_render_sectors = NULL;
+	LinkToWorld(nullptr, false, Sector);
 
 	AddToHash();
 	if (player)
@@ -3686,12 +3690,13 @@ DVector3 AActor::GetPortalTransition(double byoffset, sector_t **pSec)
 void AActor::CheckPortalTransition(bool islinked)
 {
 	bool moved = false;
+	FLinkContext ctx;
 	while (!Sector->PortalBlocksMovement(sector_t::ceiling))
 	{
 		if (Z() >= Sector->GetPortalPlaneZ(sector_t::ceiling))
 		{
 			DVector3 oldpos = Pos();
-			if (islinked && !moved) UnlinkFromWorld();
+			if (islinked && !moved) UnlinkFromWorld(&ctx);
 			SetXYZ(PosRelative(Sector->GetOppositePortalGroup(sector_t::ceiling)));
 			Prev = Pos() - oldpos;
 			Sector = P_PointInSector(Pos());
@@ -3708,7 +3713,7 @@ void AActor::CheckPortalTransition(bool islinked)
 			if (Z() < portalz && floorz < portalz)
 			{
 				DVector3 oldpos = Pos();
-				if (islinked && !moved) UnlinkFromWorld();
+				if (islinked && !moved) UnlinkFromWorld(&ctx);
 				SetXYZ(PosRelative(Sector->GetOppositePortalGroup(sector_t::floor)));
 				Prev = Pos() - oldpos;
 				Sector = P_PointInSector(Pos());
@@ -3718,7 +3723,7 @@ void AActor::CheckPortalTransition(bool islinked)
 			else break;
 		}
 	}
-	if (islinked && moved) LinkToWorld();
+	if (islinked && moved) LinkToWorld(&ctx);
 }
 
 //
@@ -3781,11 +3786,12 @@ void AActor::Tick ()
 
 		if (!Vel.isZero() || !(flags & MF_NOBLOCKMAP))
 		{
-			UnlinkFromWorld();
+			FLinkContext ctx;
+			UnlinkFromWorld(&ctx);
 			flags |= MF_NOBLOCKMAP;
 			SetXYZ(Vec3Offset(Vel));
 			CheckPortalTransition(false);
-			LinkToWorld();
+			LinkToWorld(&ctx);
 		}
 	}
 	else
@@ -4544,11 +4550,12 @@ AActor *AActor::StaticSpawn (PClassActor *type, const DVector3 &pos, replace_t a
 	actor->frame = st->GetFrame();
 	actor->renderflags = (actor->renderflags & ~RF_FULLBRIGHT) | ActorRenderFlags::FromInt (st->GetFullbright());
 	actor->touching_sectorlist = NULL;	// NULL head of sector list // phares 3/13/98
+	actor->touching_render_sectors = NULL;
 	if (G_SkillProperty(SKILLP_FastMonsters) && actor->GetClass()->FastSpeed >= 0)
 	actor->Speed = actor->GetClass()->FastSpeed;
 
 	// set subsector and/or block links
-	actor->LinkToWorld (SpawningMapThing);
+	actor->LinkToWorld (nullptr, SpawningMapThing);
 	actor->ClearInterpolation();
 
 	actor->dropoffz = actor->floorz = actor->Sector->floorplane.ZatPoint(pos);
@@ -4925,12 +4932,9 @@ void AActor::Destroy ()
 	RemoveFromHash ();
 
 	// unlink from sector and block lists
-	UnlinkFromWorld ();
+	UnlinkFromWorld (nullptr);
 	flags |= MF_NOSECTOR|MF_NOBLOCKMAP;
 
-	// Delete all nodes on the current sector_list			phares 3/16/98
-	P_DelSector_List();
-
 	// Transform any playing sound into positioned, non-actor sounds.
 	S_RelinkSound (this, NULL);
 
@@ -6321,7 +6325,7 @@ bool P_CheckMissileSpawn (AActor* th, double maxdist)
 		// [RH] Don't explode ripping missiles that spawn inside something
 		if (th->BlockingMobj == NULL || !(th->flags2 & MF2_RIP) || (th->BlockingMobj->flags5 & MF5_DONTRIP))
 		{
-			// If this is a monster spawned by A_CustomMissile subtract it from the counter.
+			// If this is a monster spawned by A_SpawnProjectile subtract it from the counter.
 			th->ClearCounters();
 			// [RH] Don't explode missiles that spawn on top of horizon lines
 			if (th->BlockingLine != NULL && th->BlockingLine->special == Line_Horizon)
@@ -7481,9 +7485,10 @@ void AActor::RestoreSpecialPosition()
 	// Move item back to its original location
 	DVector2 sp = SpawnPoint;
 
-	UnlinkFromWorld();
+	FLinkContext ctx;
+	UnlinkFromWorld(&ctx);
 	SetXY(sp);
-	LinkToWorld(true);
+	LinkToWorld(&ctx, true);
 	SetZ(Sector->floorplane.ZatPoint(sp));
 	P_FindFloorCeiling(this, FFCF_ONLYSPAWNPOS | FFCF_NOPORTALS);	// no portal checks here so that things get spawned in this sector.
 
diff --git a/src/p_setup.cpp b/src/p_setup.cpp
index 11aef9d8db..7c663508b1 100644
--- a/src/p_setup.cpp
+++ b/src/p_setup.cpp
@@ -1512,6 +1512,7 @@ void P_LoadSectors (MapData *map, FMissingTextureTracker &missingtex)
 		ss->thinglist = NULL;
 		ss->touching_thinglist = NULL;		// phares 3/14/98
 		ss->render_thinglist = NULL;
+		ss->touching_render_things = NULL;
 		ss->seqType = defSeqType;
 		ss->SeqName = NAME_None;
 		ss->nextsec = -1;	//jff 2/26/98 add fields to support locking out
diff --git a/src/p_udmf.cpp b/src/p_udmf.cpp
index c1a64f84b7..2e335f4f07 100644
--- a/src/p_udmf.cpp
+++ b/src/p_udmf.cpp
@@ -1297,6 +1297,7 @@ public:
 		sec->thinglist = NULL;
 		sec->touching_thinglist = NULL;		// phares 3/14/98
 		sec->render_thinglist = NULL;
+		sec->touching_render_things = NULL;
 		sec->seqType = (level.flags & LEVEL_SNDSEQTOTALCTRL) ? 0 : -1;
 		sec->nextsec = -1;	//jff 2/26/98 add fields to support locking out
 		sec->prevsec = -1;	// stair retriggering until build completes
diff --git a/src/p_user.cpp b/src/p_user.cpp
index 47c64d0637..40a3cb2f6d 100644
--- a/src/p_user.cpp
+++ b/src/p_user.cpp
@@ -2939,7 +2939,8 @@ void P_UnPredictPlayer ()
 		// could cause it to change during prediction.
 		player->camera = savedcamera;
 
-		act->UnlinkFromWorld();
+		FLinkContext ctx;
+		act->UnlinkFromWorld(&ctx);
 		memcpy(&act->snext, PredictionActorBackup, sizeof(APlayerPawn) - ((BYTE *)&act->snext - (BYTE *)act));
 
 		// The blockmap ordering needs to remain unchanged, too.
@@ -2968,7 +2969,7 @@ void P_UnPredictPlayer ()
 			}
 
 			// Destroy old refrences
-			msecnode_t *node = sector_list;
+			msecnode_t *node = ctx.sector_list;
 			while (node)
 			{
 				node->m_thing = NULL;
@@ -2976,22 +2977,23 @@ void P_UnPredictPlayer ()
 			}
 
 			// Make the sector_list match the player's touching_sectorlist before it got predicted.
-			P_DelSeclist(sector_list);
-			sector_list = NULL;
+			P_DelSeclist(ctx.sector_list);
+			ctx.sector_list = NULL;
 			for (i = PredictionTouchingSectorsBackup.Size(); i-- > 0;)
 			{
-				sector_list = P_AddSecnode(PredictionTouchingSectorsBackup[i], act, sector_list, PredictionTouchingSectorsBackup[i]->touching_thinglist);
+				ctx.sector_list = P_AddSecnode(PredictionTouchingSectorsBackup[i], act, ctx.sector_list, PredictionTouchingSectorsBackup[i]->touching_thinglist);
 			}
-			act->touching_sectorlist = sector_list;	// Attach to thing
-			sector_list = NULL;		// clear for next time
+			act->touching_sectorlist = ctx.sector_list;	// Attach to thing
+			ctx.sector_list = NULL;		// clear for next time
 
-			node = sector_list;
+			// Huh???
+			node = ctx.sector_list;
 			while (node)
 			{
 				if (node->m_thing == NULL)
 				{
-					if (node == sector_list)
-						sector_list = node->m_tnext;
+					if (node == ctx.sector_list)
+						ctx.sector_list = node->m_tnext;
 					node = P_DelSecnode(node, &sector_t::touching_thinglist);
 				}
 				else
diff --git a/src/portal.cpp b/src/portal.cpp
index 156643cfba..121b05e19f 100644
--- a/src/portal.cpp
+++ b/src/portal.cpp
@@ -1140,8 +1140,9 @@ void P_CreateLinkedPortals()
 				P_CollectConnectedGroups(actor->Sector->PortalGroup, actor->Pos(), actor->Top(), actor->radius, check);
 				if (check.Size() > 0)
 				{
-					actor->UnlinkFromWorld();
-					actor->LinkToWorld();
+					FLinkContext ctx;
+					actor->UnlinkFromWorld(&ctx);
+					actor->LinkToWorld(&ctx);
 				}
 			}
 		}
diff --git a/src/r_defs.h b/src/r_defs.h
index 6efca5cde8..3b064c7607 100644
--- a/src/r_defs.h
+++ b/src/r_defs.h
@@ -23,6 +23,7 @@
 #ifndef __R_DEFS_H__
 #define __R_DEFS_H__
 
+#include <forward_list>
 #include "doomdef.h"
 #include "templates.h"
 #include "memarena.h"
@@ -1048,6 +1049,7 @@ public:
 	// thinglist is a subset of touching_thinglist
 	struct msecnode_t *touching_thinglist;				// phares 3/14/98
 	struct msecnode_t *render_thinglist;				// for cross-portal rendering.
+	std::forward_list<AActor*>* touching_render_things; // this is used to allow wide things to be rendered not only from their main sector.
 
 	double gravity;			// [RH] Sector gravity (1.0 is normal)
 	FNameNoInit damagetype;		// [RH] Means-of-death for applied damage
diff --git a/src/r_things.cpp b/src/r_things.cpp
index a1ace0d49c..8d326b319a 100644
--- a/src/r_things.cpp
+++ b/src/r_things.cpp
@@ -1217,7 +1217,6 @@ static void R_ProjectWallSprite(AActor *thing, const DVector3 &pos, FTextureID p
 // [RH] Save which side of heightsec sprite is on here.
 void R_AddSprites (sector_t *sec, int lightlevel, int fakeside)
 {
-	AActor *thing;
 	F3DFloor *fakeceiling = NULL;
 	F3DFloor *fakefloor = NULL;
 
@@ -1225,7 +1224,7 @@ void R_AddSprites (sector_t *sec, int lightlevel, int fakeside)
 	// A sector might have been split into several
 	//	subsectors during BSP building.
 	// Thus we check whether it was already added.
-	if (sec->thinglist == NULL || sec->validcount == validcount)
+	if (sec->touching_render_things == NULL || sec->validcount == validcount)
 		return;
 
 	// Well, now it will be done.
@@ -1234,8 +1233,11 @@ void R_AddSprites (sector_t *sec, int lightlevel, int fakeside)
 	spriteshade = LIGHT2SHADE(lightlevel + r_actualextralight);
 
 	// Handle all things in sector.
-	for (thing = sec->thinglist; thing; thing = thing->snext)
+	for (auto thing : *sec->touching_render_things)
 	{
+		if (thing->validcount == validcount) continue;
+		thing->validcount = validcount;
+		
 		FIntCVar *cvar = thing->GetClass()->distancecheck;
 		if (cvar != NULL && *cvar >= 0)
 		{
diff --git a/src/scripting/codegeneration/codegen.cpp b/src/scripting/codegeneration/codegen.cpp
index 8e57506606..6a1bc8717d 100644
--- a/src/scripting/codegeneration/codegen.cpp
+++ b/src/scripting/codegeneration/codegen.cpp
@@ -7493,7 +7493,7 @@ isresolved:
 		else
 		{
 			// Todo: If this is a qualified call to a parent class function, let it through (but this needs to disable virtual calls later.)
-			ScriptPosition.Message(MSG_ERROR, "Qualified member call to parent class not yet implemented\n", cls->TypeName.GetChars(), MethodName.GetChars());
+			ScriptPosition.Message(MSG_ERROR, "Qualified member call to parent class %s::%s is not yet implemented\n", cls->TypeName.GetChars(), MethodName.GetChars());
 			delete this;
 			return nullptr;
 		}
@@ -7897,7 +7897,7 @@ FxExpression *FxVMFunctionCall::Resolve(FCompileContext& ctx)
 					// For a reference argument the types must match 100%.
 					if (type != ArgList[i]->ValueType)
 					{
-						ScriptPosition.Message(MSG_ERROR, "Type mismatch in reference argument", Function->SymbolName.GetChars());
+						ScriptPosition.Message(MSG_ERROR, "Type mismatch in reference argument %s", Function->SymbolName.GetChars());
 						x = nullptr;
 					}
 					else
@@ -8346,7 +8346,7 @@ FxExpression *FxGetDefaultByType::Resolve(FCompileContext &ctx)
 		{
 			// this is the ugly case. We do not know what we have and cannot do proper type casting.
 			// For now error out and let this case require explicit handling on the user side.
-			ScriptPosition.Message(MSG_ERROR, "GetDefaultByType() requires an actor class type", static_cast<FxConstant *>(Self)->GetValue().GetString().GetChars());
+			ScriptPosition.Message(MSG_ERROR, "GetDefaultByType() requires an actor class type, but got %s", static_cast<FxConstant *>(Self)->GetValue().GetString().GetChars());
 			delete this;
 			return nullptr;
 		}
@@ -9511,7 +9511,7 @@ FxExpression *FxClassTypeCast::Resolve(FCompileContext &ctx)
 				/* lax */
 				// Since this happens in released WADs it must pass without a terminal error... :(
 				ScriptPosition.Message(MSG_OPTERROR,
-					"Unknown class name '%s'",
+					"Unknown class name '%s' of type '%s'",
 					clsname.GetChars(), desttype->TypeName.GetChars());
 			}
 			else
diff --git a/src/scripting/thingdef.cpp b/src/scripting/thingdef.cpp
index 5d2d251a9f..355cc87f31 100644
--- a/src/scripting/thingdef.cpp
+++ b/src/scripting/thingdef.cpp
@@ -272,7 +272,7 @@ static void CheckForUnsafeStates(PClassActor *obj)
 				// If an unsafe function (i.e. one that accesses user variables) is being detected, print a warning once and remove the bogus function. We may not call it because that would inevitably crash.
 				auto owner = FState::StaticFindStateOwner(state);
 				GetStateSource(state).Message(MSG_ERROR, TEXTCOLOR_RED "Unsafe state call in state %s.%d which accesses user variables, reached by %s.%s.\n",
-					owner->TypeName.GetChars(), state - owner->OwnedStates, obj->TypeName.GetChars(), FName(*test).GetChars());
+					owner->TypeName.GetChars(), int(state - owner->OwnedStates), obj->TypeName.GetChars(), FName(*test).GetChars());
 			}
 			state = state->NextState;
 		}
diff --git a/src/scripting/thingdef_properties.cpp b/src/scripting/thingdef_properties.cpp
index 9eb050a83e..27b7ab2d33 100644
--- a/src/scripting/thingdef_properties.cpp
+++ b/src/scripting/thingdef_properties.cpp
@@ -216,9 +216,10 @@ bool ModActorFlag(AActor *actor, FString &flagname, bool set, bool printerror)
 				// If these 2 flags get changed we need to update the blockmap and sector links.
 				bool linkchange = flagp == &actor->flags && (fd->flagbit == MF_NOBLOCKMAP || fd->flagbit == MF_NOSECTOR);
 
-				if (linkchange) actor->UnlinkFromWorld();
+				FLinkContext ctx;
+				if (linkchange) actor->UnlinkFromWorld(&ctx);
 				ModActorFlag(actor, fd, set);
-				if (linkchange) actor->LinkToWorld();
+				if (linkchange) actor->LinkToWorld(&ctx);
 			}
 
 			if (actor->CountsAsKill() && actor->health > 0) ++level.total_monsters;
@@ -525,7 +526,7 @@ DEFINE_PROPERTY(skip_super, 0, Actor)
 	if (info->Size != actorclass->Size)
 	{
 		bag.ScriptPosition.Message(MSG_OPTERROR,
-			"'skip_super' is only allowed in subclasses of AActor with no additional fields and will be ignored.", info->TypeName.GetChars());
+			"'skip_super' is only allowed in subclasses of AActor with no additional fields and will be ignored in type %s.", info->TypeName.GetChars());
 		return;
 	}
 	if (bag.StateSet)
@@ -713,6 +714,15 @@ DEFINE_PROPERTY(radius, F, Actor)
 	defaults->radius = id;
 }
 
+//==========================================================================
+//
+//==========================================================================
+DEFINE_PROPERTY(renderradius, F, Actor)
+{
+	PROP_DOUBLE_PARM(id, 0);
+	defaults->renderradius = id;
+}
+
 //==========================================================================
 //
 //==========================================================================
diff --git a/src/scripting/zscript/zcc_compile.cpp b/src/scripting/zscript/zcc_compile.cpp
index c4c5248171..9684ec9246 100644
--- a/src/scripting/zscript/zcc_compile.cpp
+++ b/src/scripting/zscript/zcc_compile.cpp
@@ -1323,7 +1323,7 @@ bool ZCCCompiler::CompileFields(PStruct *type, TArray<ZCC_VarDeclarator *> &Fiel
 				}
 				else if (hasnativechildren)
 				{
-					Error(field, "Cannot add field %s to %s. %s has native children which means it size may not change.", type->TypeName.GetChars(), fd->FieldSize, FName(name->Name).GetChars());
+					Error(field, "Cannot add field %s to %s. %s has native children which means it size may not change.", FName(name->Name).GetChars(), type->TypeName.GetChars(), type->TypeName.GetChars());
 				}
 				else
 				{
diff --git a/wadsrc/static/zscript.txt b/wadsrc/static/zscript.txt
index f12e554bba..d9e60f2484 100644
--- a/wadsrc/static/zscript.txt
+++ b/wadsrc/static/zscript.txt
@@ -38,6 +38,8 @@
 #include "zscript/shared/fastprojectile.txt"
 #include "zscript/shared/dynlights.txt"
 
+#include "zscript/compatibility.txt"
+
 #include "zscript/doom/doomplayer.txt"
 #include "zscript/doom/possessed.txt"
 #include "zscript/doom/doomimp.txt"
diff --git a/wadsrc/static/zscript/actor.txt b/wadsrc/static/zscript/actor.txt
index 0d264580a8..2ced709aee 100644
--- a/wadsrc/static/zscript/actor.txt
+++ b/wadsrc/static/zscript/actor.txt
@@ -45,6 +45,7 @@ class Actor : Thinker native
 	native TextureID ceilingpic;
 	native double Height;
 	native readonly double Radius;
+        native readonly double RenderRadius;
 	native double projectilepassheight;
 	native int tics;
 	native readonly State CurState;
@@ -201,6 +202,7 @@ class Actor : Thinker native
 		Health DEFAULT_HEALTH;
 		Reactiontime 8;
 		Radius 20;
+                RenderRadius 0;
 		Height 16;
 		Mass 100;
 		RenderStyle 'Normal';
@@ -691,7 +693,7 @@ class Actor : Thinker native
 	deprecated native void A_StopSoundEx(name slot);
 	native void A_SeekerMissile(int threshold, int turnmax, int flags = 0, int chance = 50, int distance = 10);
 	native action state A_Jump(int chance, statelabel label, ...);
-	native void A_CustomMissile(class<Actor> missiletype, double spawnheight = 32, double spawnofs_xy = 0, double angle = 0, int flags = 0, double pitch = 0, int ptr = AAPTR_TARGET);
+	native void A_SpawnProjectile(class<Actor> missiletype, double spawnheight = 32, double spawnofs_xy = 0, double angle = 0, int flags = 0, double pitch = 0, int ptr = AAPTR_TARGET);
 	native void A_CustomBulletAttack(double spread_xy, double spread_z, int numbullets, int damageperbullet, class<Actor> pufftype = "BulletPuff", double range = 0, int flags = 0, int ptr = AAPTR_TARGET, class<Actor> missile = null, double Spawnheight = 32, double Spawnofs_xy = 0);
 	native void A_CustomRailgun(int damage, int spawnofs_xy = 0, color color1 = 0, color color2 = 0, int flags = 0, int aim = 0, double maxdiff = 0, class<Actor> pufftype = "BulletPuff", double spread_xy = 0, double spread_z = 0, double range = 0, int duration = 0, double sparsity = 1.0, double driftspeed = 1.0, class<Actor> spawnclass = null, double spawnofs_z = 0, int spiraloffset = 270, int limit = 0);
 	native bool A_SetInventory(class<Inventory> itemtype, int amount, int ptr = AAPTR_DEFAULT, bool beyondMax = false);
diff --git a/wadsrc/static/zscript/chex/chexweapons.txt b/wadsrc/static/zscript/chex/chexweapons.txt
index a4c862d64c..5bf6fe7575 100644
--- a/wadsrc/static/zscript/chex/chexweapons.txt
+++ b/wadsrc/static/zscript/chex/chexweapons.txt
@@ -77,7 +77,7 @@ class ZorchPropulsor : RocketLauncher
 	{
 	Fire:
 		MISG B 8 A_GunFlash;
-		MISG B 12 A_FireCustomMissile("PropulsorMissile");
+		MISG B 12 A_FireProjectile("PropulsorMissile");
 		MISG B 0 A_ReFire;
 		Goto Ready;
 	}
@@ -107,7 +107,7 @@ class PhasingZorcher : PlasmaRifle
 	{
 	Fire:
 		PLSG A 0 A_GunFlash;
-		PLSG A 3 A_FireCustomMissile("PhaseZorchMissile");
+		PLSG A 3 A_FireProjectile("PhaseZorchMissile");
 		PLSG B 20 A_ReFire;
 		Goto Ready;
 	Flash:
@@ -143,7 +143,7 @@ class LAZDevice : BFG9000
 	Fire:
 		BFGG A 20 A_BFGsound;
 		BFGG B 10 A_GunFlash;
-		BFGG B 10 A_FireCustomMissile("LAZBall");
+		BFGG B 10 A_FireProjectile("LAZBall");
 		BFGG B 20 A_ReFire;
 		Goto Ready;
 	}
diff --git a/wadsrc/static/zscript/compatibility.txt b/wadsrc/static/zscript/compatibility.txt
new file mode 100644
index 0000000000..9334bd6196
--- /dev/null
+++ b/wadsrc/static/zscript/compatibility.txt
@@ -0,0 +1,18 @@
+// This file contains compatibility wrappers for DECORATE functions with bad parameters.
+
+extend class Actor
+{
+	deprecated void A_CustomMissile(class<Actor> missiletype, double spawnheight = 32, double spawnofs_xy = 0, double angle = 0, int flags = 0, double pitch = 0, int ptr = AAPTR_TARGET)
+	{
+		A_SpawnProjectile(missiletype, spawnheight, spawnofs_xy, angle, flags|CMF_BADPITCH, pitch, ptr);
+	}
+}
+
+extend class StateProvider
+{
+	deprecated action void A_FireCustomMissile(class<Actor> missiletype, double angle = 0, bool useammo = true, double spawnofs_xy = 0, double spawnheight = 0, int flags = 0, double pitch = 0)
+	{
+		A_FireProjectile(missiletype, angle, useammo, spawnofs_xy, spawnheight, flags, -pitch);
+	}
+}
+
diff --git a/wadsrc/static/zscript/constants.txt b/wadsrc/static/zscript/constants.txt
index 6f57b4222e..1d2064aa1a 100644
--- a/wadsrc/static/zscript/constants.txt
+++ b/wadsrc/static/zscript/constants.txt
@@ -45,7 +45,7 @@ enum EBFGSprayFlags
 	BFGF_MISSILEORIGIN = 2,
 };
 
-// Flags for A_CustomMissile
+// Flags for A_SpawnProjectile
 enum ECustomMissileFlags
 {
 	CMF_AIMOFFSET = 1,
@@ -56,6 +56,7 @@ enum ECustomMissileFlags
 	CMF_OFFSETPITCH = 32,
 	CMF_SAVEPITCH = 64,
 	CMF_ABSOLUTEANGLE = 128,
+	CMF_BADPITCH = 256,	// for compatibility handling only - avoid!
 };
 
 // Flags for A_CustomBulletAttack
diff --git a/wadsrc/static/zscript/doom/archvile.txt b/wadsrc/static/zscript/doom/archvile.txt
index 9faa804954..a19e5c705c 100644
--- a/wadsrc/static/zscript/doom/archvile.txt
+++ b/wadsrc/static/zscript/doom/archvile.txt
@@ -125,25 +125,26 @@ extend class Actor
 	
 	void A_VileAttack(sound snd = "vile/stop", int initialdmg = 20, int blastdmg = 70, int blastradius = 70, double thrust = 1.0, name damagetype = "Fire", int flags = 0)
 	{
-		if (target)
+		Actor targ = target;
+		if (targ)
 		{
 			A_FaceTarget();
-			if (!CheckSight(target, 0)) return;
+			if (!CheckSight(targ, 0)) return;
 			A_PlaySound(snd, CHAN_WEAPON);
-			int newdam = target.DamageMobj (self, self, initialdmg, (flags & VAF_DMGTYPEAPPLYTODIRECT)? damagetype : 'none');
+			int newdam = targ.DamageMobj (self, self, initialdmg, (flags & VAF_DMGTYPEAPPLYTODIRECT)? damagetype : 'none');
 
-			TraceBleed (newdam > 0 ? newdam : initialdmg, target);
+			TraceBleed (newdam > 0 ? newdam : initialdmg, targ);
 			
 			Actor fire = tracer;
 			if (fire)
 			{
 				// move the fire between the vile and the player
-				fire.SetOrigin(target.Vec3Angle(-24., angle, 0), true);
+				fire.SetOrigin(targ.Vec3Angle(-24., angle, 0), true);
 				fire.A_Explode(blastdmg, blastradius, XF_NOSPLASH, false, 0, 0, 0, "BulletPuff", damagetype);
 			}
-			if (!target.bDontThrust)
+			if (!targ.bDontThrust)
 			{
-				target.Vel.z = thrust * 1000 / max(1, target.Mass);
+				targ.Vel.z = thrust * 1000 / max(1, targ.Mass);
 			}
 		}
 	}
diff --git a/wadsrc/static/zscript/heretic/snake.txt b/wadsrc/static/zscript/heretic/snake.txt
index 613559a86c..15ae342aa6 100644
--- a/wadsrc/static/zscript/heretic/snake.txt
+++ b/wadsrc/static/zscript/heretic/snake.txt
@@ -28,9 +28,9 @@ class Snake : Actor
 		Loop;
 	Missile:
 		SNKE FF 5 A_FaceTarget;
-		SNKE FFF 4 A_CustomMissile("SnakeProjA", 32, 0, 0, CMF_CHECKTARGETDEAD);
+		SNKE FFF 4 A_SpawnProjectile("SnakeProjA", 32, 0, 0, CMF_CHECKTARGETDEAD);
 		SNKE FFF 5 A_FaceTarget;
-		SNKE F 4 A_CustomMissile("SnakeProjB", 32, 0, 0, CMF_CHECKTARGETDEAD);
+		SNKE F 4 A_SpawnProjectile("SnakeProjB", 32, 0, 0, CMF_CHECKTARGETDEAD);
 		Goto See;
 	Pain:
 		SNKE E 3;
diff --git a/wadsrc/static/zscript/heretic/weaponblaster.txt b/wadsrc/static/zscript/heretic/weaponblaster.txt
index 8f4756b5b6..612e630c0b 100644
--- a/wadsrc/static/zscript/heretic/weaponblaster.txt
+++ b/wadsrc/static/zscript/heretic/weaponblaster.txt
@@ -87,7 +87,7 @@ class BlasterPowered : Blaster
 	Fire:
 		BLSR BC 0;
 	Hold:
-		BLSR D 3 A_FireCustomMissile("BlasterFX1");
+		BLSR D 3 A_FireProjectile("BlasterFX1");
 		BLSR CB 4;
 		BLSR A 0 A_ReFire;
 		Goto Ready;
diff --git a/wadsrc/static/zscript/hexen/centaur.txt b/wadsrc/static/zscript/hexen/centaur.txt
index f8c8e2c3d3..abf2f19d2f 100644
--- a/wadsrc/static/zscript/hexen/centaur.txt
+++ b/wadsrc/static/zscript/hexen/centaur.txt
@@ -112,9 +112,9 @@ class CentaurLeader : Centaur
 	{
 	Missile:
 		CENT E 10 A_FaceTarget;
-		CENT F 8 Bright A_CustomMissile("CentaurFX", 45, 0, 0, CMF_AIMOFFSET);
+		CENT F 8 Bright A_SpawnProjectile("CentaurFX", 45, 0, 0, CMF_AIMOFFSET);
 		CENT E 10 A_FaceTarget;
-		CENT F 8 Bright A_CustomMissile("CentaurFX", 45, 0, 0, CMF_AIMOFFSET);
+		CENT F 8 Bright A_SpawnProjectile("CentaurFX", 45, 0, 0, CMF_AIMOFFSET);
 		Goto See;
 	}
 }		
diff --git a/wadsrc/static/zscript/hexen/demons.txt b/wadsrc/static/zscript/hexen/demons.txt
index 25e078509b..ef4c96d8d8 100644
--- a/wadsrc/static/zscript/hexen/demons.txt
+++ b/wadsrc/static/zscript/hexen/demons.txt
@@ -44,7 +44,7 @@ class Demon1 : Actor
 	Missile:
 		DEMN E 5 A_FaceTarget;
 		DEMN F 6 A_FaceTarget;
-		DEMN G 5 A_CustomMissile("Demon1FX1", 62, 0);
+		DEMN G 5 A_SpawnProjectile("Demon1FX1", 62, 0);
 		Goto See;
 	Death:
 		DEMN HI 6;
@@ -250,7 +250,7 @@ class Demon2 : Demon1
 	Missile:
 		DEM2 E 5 A_FaceTarget;
 		DEM2 F 6 A_FaceTarget;
-		DEM2 G 5 A_CustomMissile("Demon2FX1", 62, 0);
+		DEM2 G 5 A_SpawnProjectile("Demon2FX1", 62, 0);
 		Goto See;
 	Death:
 		DEM2 HI 6;
diff --git a/wadsrc/static/zscript/hexen/magewand.txt b/wadsrc/static/zscript/hexen/magewand.txt
index 3feb96ae16..9157bdba12 100644
--- a/wadsrc/static/zscript/hexen/magewand.txt
+++ b/wadsrc/static/zscript/hexen/magewand.txt
@@ -23,7 +23,7 @@ class MWeapWand : MageWeapon
 		Loop;
 	Fire:
 		MWND A 6;
-		MWND B 6 Bright Offset (0, 48) A_FireCustomMissile ("MageWandMissile");
+		MWND B 6 Bright Offset (0, 48) A_FireProjectile ("MageWandMissile");
 		MWND A 3 Offset (0, 40);
 		MWND A 3 Offset (0, 36) A_ReFire;
 		Goto Ready;
diff --git a/wadsrc/static/zscript/hexen/serpent.txt b/wadsrc/static/zscript/hexen/serpent.txt
index 6eaafcfd1f..eb26c8c7b9 100644
--- a/wadsrc/static/zscript/hexen/serpent.txt
+++ b/wadsrc/static/zscript/hexen/serpent.txt
@@ -300,7 +300,7 @@ class SerpentLeader : Serpent
 	States
 	{
 	Missile:
-		SSPT N 5 A_CustomMissile("SerpentFX", 32, 0);
+		SSPT N 5 A_SpawnProjectile("SerpentFX", 32, 0);
 		Goto Dive;
 	}
 }
diff --git a/wadsrc/static/zscript/hexen/wraith.txt b/wadsrc/static/zscript/hexen/wraith.txt
index 42a81ae6c5..4b90dc4f68 100644
--- a/wadsrc/static/zscript/hexen/wraith.txt
+++ b/wadsrc/static/zscript/hexen/wraith.txt
@@ -47,7 +47,7 @@ class Wraith : Actor
 	Missile:
 		WRTH E 6 A_FaceTarget;
 		WRTH F 6;
-		WRTH G 6 A_CustomMissile("WraithFX1");
+		WRTH G 6 A_SpawnProjectile("WraithFX1");
 		Goto See;
 	Death:
 		WRTH I 4;
diff --git a/wadsrc/static/zscript/raven/artiegg.txt b/wadsrc/static/zscript/raven/artiegg.txt
index f0287048ec..a51e2e1f5d 100644
--- a/wadsrc/static/zscript/raven/artiegg.txt
+++ b/wadsrc/static/zscript/raven/artiegg.txt
@@ -49,7 +49,7 @@ class ArtiEgg : CustomInventory
 	Use:
 		TNT1 A 0
 		{
-			for (double i = -15; i <= 15; i += 7.5)	A_FireCustomMissile("EggFX", i, 0, 0, 0, 1);
+			for (double i = -15; i <= 15; i += 7.5)	A_FireProjectile("EggFX", i, false, 0, 0, FPF_AIMATANGLE);
 		}
 		Stop;
 	}
@@ -104,7 +104,7 @@ class ArtiPork : CustomInventory
 	Use:
 		TNT1 A 0
 		{
-			for (double i = -15; i <= 15; i += 7.5)	A_FireCustomMissile("PorkFX", i, 0, 0, 0, 1);
+			for (double i = -15; i <= 15; i += 7.5)	A_FireProjectile("PorkFX", i, false, 0, 0, FPF_AIMATANGLE);
 		}
 		Stop;
 	}
diff --git a/wadsrc/static/zscript/shared/bridge.txt b/wadsrc/static/zscript/shared/bridge.txt
index ea38796a70..6fb0a99d51 100644
--- a/wadsrc/static/zscript/shared/bridge.txt
+++ b/wadsrc/static/zscript/shared/bridge.txt
@@ -85,6 +85,7 @@ class InvisibleBridge : Actor native
 	{
 		RenderStyle "None";
 		Radius 32;
+		RenderRadius -1;
 		Height 4;
 		+SOLID
 		+NOGRAVITY
diff --git a/wadsrc/static/zscript/shared/inventory.txt b/wadsrc/static/zscript/shared/inventory.txt
index 06e4d75525..6d034e7894 100644
--- a/wadsrc/static/zscript/shared/inventory.txt
+++ b/wadsrc/static/zscript/shared/inventory.txt
@@ -84,7 +84,7 @@ class StateProvider : Inventory native
 	action native state A_JumpIfNoAmmo(statelabel label);
 	action native void A_CustomPunch(int damage, bool norandom = false, int flags = CPF_USEAMMO, class<Actor> pufftype = "BulletPuff", double range = 0, double lifesteal = 0, int lifestealmax = 0, class<BasicArmorBonus> armorbonustype = "ArmorBonus", sound MeleeSound = 0, sound MissSound = "");
 	action native void A_FireBullets(double spread_xy, double spread_z, int numbullets, int damageperbullet, class<Actor> pufftype = "BulletPuff", int flags = 1, double range = 0, class<Actor> missile = null, double Spawnheight = 32, double Spawnofs_xy = 0);
-	action native void A_FireCustomMissile(class<Actor> missiletype, double angle = 0, bool useammo = true, double spawnofs_xy = 0, double spawnheight = 0, int flags = 0, double pitch = 0);
+	action native void A_FireProjectile(class<Actor> missiletype, double angle = 0, bool useammo = true, double spawnofs_xy = 0, double spawnheight = 0, int flags = 0, double pitch = 0);
 	action native void A_RailAttack(int damage, int spawnofs_xy = 0, bool useammo = true, color color1 = 0, color color2 = 0, int flags = 0, double maxdiff = 0, class<Actor> pufftype = "BulletPuff", double spread_xy = 0, double spread_z = 0, double range = 0, int duration = 0, double sparsity = 1.0, double driftspeed = 1.0, class<Actor> spawnclass = "none", double spawnofs_z = 0, int spiraloffset = 270, int limit = 0);
 	action native void A_WeaponReady(int flags = 0);
 	action native void A_Lower();
diff --git a/wadsrc/static/zscript/strife/alienspectres.txt b/wadsrc/static/zscript/strife/alienspectres.txt
index 39cbc83315..791266cc0d 100644
--- a/wadsrc/static/zscript/strife/alienspectres.txt
+++ b/wadsrc/static/zscript/strife/alienspectres.txt
@@ -202,7 +202,7 @@ class AlienSpectre2 : AlienSpectre1
 	{
 	Missile:
 		ALN1 F 4 A_FaceTarget;
-		ALN1 I 4 A_CustomMissile("SpectralLightningH3", 32, 0);
+		ALN1 I 4 A_SpawnProjectile("SpectralLightningH3", 32, 0);
 		ALN1 E 4;
 		Goto See+10;
 	}
@@ -267,7 +267,7 @@ class AlienSpectre4 : AlienSpectre1
 	{
 	Missile:
 		ALN1 F 4 A_FaceTarget;
-		ALN1 I 4 A_CustomMissile("SpectralLightningBigV2", 32, 0);
+		ALN1 I 4 A_SpawnProjectile("SpectralLightningBigV2", 32, 0);
 		ALN1 E 4;
 		Goto See+10;
 	}
@@ -289,7 +289,7 @@ class AlienSpectre5 : AlienSpectre1
 	{
 	Missile:
 		ALN1 F 4 A_FaceTarget;
-		ALN1 I 4 A_CustomMissile("SpectralLightningBigBall2", 32, 0);
+		ALN1 I 4 A_SpawnProjectile("SpectralLightningBigBall2", 32, 0);
 		ALN1 E 4;
 		Goto See+10;
 	}
diff --git a/wadsrc/static/zscript/strife/entityboss.txt b/wadsrc/static/zscript/strife/entityboss.txt
index daf1a78ee2..a9ec94bb23 100644
--- a/wadsrc/static/zscript/strife/entityboss.txt
+++ b/wadsrc/static/zscript/strife/entityboss.txt
@@ -265,7 +265,7 @@ class EntitySecond : SpectralMonster
 		Goto See+1;
 	Missile:
 		MNAL W 4 Bright A_FaceTarget;
-		MNAL U 4 Bright A_CustomMissile("SpectralLightningH3",32,0);
+		MNAL U 4 Bright A_SpawnProjectile("SpectralLightningH3",32,0);
 		MNAL V 4 Bright A_SentinelBob;
 		Goto See+4;
 	Pain:
diff --git a/wadsrc/static/zscript/strife/loremaster.txt b/wadsrc/static/zscript/strife/loremaster.txt
index 14571f91c8..cda305d180 100644
--- a/wadsrc/static/zscript/strife/loremaster.txt
+++ b/wadsrc/static/zscript/strife/loremaster.txt
@@ -55,7 +55,7 @@ class Loremaster : Actor
 		Goto See;
 	Missile:
 		PRST E 4 A_FaceTarget;
-		PRST F 4 A_CustomMissile("LoreShot", 32, 0);
+		PRST F 4 A_SpawnProjectile("LoreShot", 32, 0);
 		PRST E 4 A_SentinelBob;
 		Goto See;
 	Death:
diff --git a/wadsrc/static/zscript/strife/strifebishop.txt b/wadsrc/static/zscript/strife/strifebishop.txt
index b7de186a27..32aacd03a3 100644
--- a/wadsrc/static/zscript/strife/strifebishop.txt
+++ b/wadsrc/static/zscript/strife/strifebishop.txt
@@ -38,7 +38,7 @@ class StrifeBishop : Actor
 		Loop;
 	Missile:
 		MLDR E 3 A_FaceTarget;
-		MLDR F 2 Bright A_CustomMissile("BishopMissile", 64, 0, 0, CMF_AIMOFFSET);
+		MLDR F 2 Bright A_SpawnProjectile("BishopMissile", 64, 0, 0, CMF_AIMOFFSET);
 		Goto See;
 	Pain:
 		MLDR D 1 A_Pain;