diff --git a/src/d_main.cpp b/src/d_main.cpp
index 4c0d2537d..d6d53dd77 100644
--- a/src/d_main.cpp
+++ b/src/d_main.cpp
@@ -556,7 +556,7 @@ CUSTOM_CVAR(Int, compatmode, 0, CVAR_ARCHIVE|CVAR_NOINITCALL)
 	case 1:	// Doom2.exe compatible with a few relaxed settings
 		v = COMPATF_SHORTTEX|COMPATF_STAIRINDEX|COMPATF_USEBLOCKING|COMPATF_NODOORLIGHT|COMPATF_SPRITESORT|
 			COMPATF_TRACE|COMPATF_MISSILECLIP|COMPATF_SOUNDTARGET|COMPATF_DEHHEALTH|COMPATF_CROSSDROPOFF|
-			COMPATF_LIGHT;
+			COMPATF_LIGHT|COMPATF_MASKEDMIDTEX;
 		w= COMPATF2_FLOORMOVE;
 		break;
 
@@ -569,7 +569,7 @@ CUSTOM_CVAR(Int, compatmode, 0, CVAR_ARCHIVE|CVAR_NOINITCALL)
 		break;
 
 	case 3: // Boom compat mode
-		v = COMPATF_TRACE|COMPATF_SOUNDTARGET|COMPATF_BOOMSCROLL|COMPATF_MISSILECLIP;
+		v = COMPATF_TRACE|COMPATF_SOUNDTARGET|COMPATF_BOOMSCROLL|COMPATF_MISSILECLIP|COMPATF_MASKEDMIDTEX;
 		break;
 
 	case 4: // Old ZDoom compat mode
@@ -579,12 +579,12 @@ CUSTOM_CVAR(Int, compatmode, 0, CVAR_ARCHIVE|CVAR_NOINITCALL)
 
 	case 5: // MBF compat mode
 		v = COMPATF_TRACE|COMPATF_SOUNDTARGET|COMPATF_BOOMSCROLL|COMPATF_MISSILECLIP|COMPATF_MUSHROOM|
-			COMPATF_MBFMONSTERMOVE|COMPATF_NOBLOCKFRIENDS;
+			COMPATF_MBFMONSTERMOVE|COMPATF_NOBLOCKFRIENDS|COMPATF_MASKEDMIDTEX;
 		break;
 
 	case 6:	// Boom with some added settings to reenable some 'broken' behavior
 		v = COMPATF_TRACE|COMPATF_SOUNDTARGET|COMPATF_BOOMSCROLL|COMPATF_MISSILECLIP|COMPATF_NO_PASSMOBJ|
-			COMPATF_INVISIBILITY|COMPATF_CORPSEGIBS|COMPATF_HITSCAN|COMPATF_WALLRUN|COMPATF_NOTOSSDROPS;
+			COMPATF_INVISIBILITY|COMPATF_CORPSEGIBS|COMPATF_HITSCAN|COMPATF_WALLRUN|COMPATF_NOTOSSDROPS|COMPATF_MASKEDMIDTEX;
 		w = COMPATF2_POINTONLINE;
 		break;
 
diff --git a/src/p_acs.cpp b/src/p_acs.cpp
index 29c9fe8fe..7cbfd69b4 100644
--- a/src/p_acs.cpp
+++ b/src/p_acs.cpp
@@ -4190,31 +4190,6 @@ bool DLevelScript::DoCheckActorTexture(int tid, AActor *activator, int string, b
 	return tex == TexMan[secpic];
 }
 
-enum
-{
-	// These are the original inputs sent by the player.
-	INPUT_OLDBUTTONS,
-	INPUT_BUTTONS,
-	INPUT_PITCH,
-	INPUT_YAW,
-	INPUT_ROLL,
-	INPUT_FORWARDMOVE,
-	INPUT_SIDEMOVE,
-	INPUT_UPMOVE,
-
-	// These are the inputs, as modified by P_PlayerThink().
-	// Most of the time, these will match the original inputs, but
-	// they can be different if a player is frozen or using a
-	// chainsaw.
-	MODINPUT_OLDBUTTONS,
-	MODINPUT_BUTTONS,
-	MODINPUT_PITCH,
-	MODINPUT_YAW,
-	MODINPUT_ROLL,
-	MODINPUT_FORWARDMOVE,
-	MODINPUT_SIDEMOVE,
-	MODINPUT_UPMOVE
-};
 
 int DLevelScript::GetPlayerInput(int playernum, int inputnum)
 {
@@ -4241,28 +4216,7 @@ int DLevelScript::GetPlayerInput(int playernum, int inputnum)
 		return 0;
 	}
 
-	switch (inputnum)
-	{
-	case INPUT_OLDBUTTONS:		return p->original_oldbuttons;		break;
-	case INPUT_BUTTONS:			return p->original_cmd.buttons;		break;
-	case INPUT_PITCH:			return p->original_cmd.pitch;		break;
-	case INPUT_YAW:				return p->original_cmd.yaw;			break;
-	case INPUT_ROLL:			return p->original_cmd.roll;		break;
-	case INPUT_FORWARDMOVE:		return p->original_cmd.forwardmove;	break;
-	case INPUT_SIDEMOVE:		return p->original_cmd.sidemove;	break;
-	case INPUT_UPMOVE:			return p->original_cmd.upmove;		break;
-
-	case MODINPUT_OLDBUTTONS:	return p->oldbuttons;				break;
-	case MODINPUT_BUTTONS:		return p->cmd.ucmd.buttons;			break;
-	case MODINPUT_PITCH:		return p->cmd.ucmd.pitch;			break;
-	case MODINPUT_YAW:			return p->cmd.ucmd.yaw;				break;
-	case MODINPUT_ROLL:			return p->cmd.ucmd.roll;			break;
-	case MODINPUT_FORWARDMOVE:	return p->cmd.ucmd.forwardmove;		break;
-	case MODINPUT_SIDEMOVE:		return p->cmd.ucmd.sidemove;		break;
-	case MODINPUT_UPMOVE:		return p->cmd.ucmd.upmove;			break;
-
-	default:					return 0;							break;
-	}
+	return P_Thing_CheckInputNum(p, inputnum);
 }
 
 enum
@@ -8094,6 +8048,17 @@ scriptwait:
 			break;
 
 // [BC] Start ST PCD's
+		case PCD_ISNETWORKGAME:
+			PushToStack(netgame);
+			break;
+
+		case PCD_PLAYERTEAM:
+			if ( activator && activator->player )
+				PushToStack( activator->player->userinfo.GetTeam() );
+			else
+				PushToStack( 0 );
+			break;
+
 		case PCD_PLAYERHEALTH:
 			if (activator)
 				PushToStack (activator->health);
@@ -8130,7 +8095,7 @@ scriptwait:
 			break;
 
 		case PCD_SINGLEPLAYER:
-			PushToStack (!netgame);
+			PushToStack (!multiplayer);
 			break;
 // [BC] End ST PCD's
 
@@ -9574,8 +9539,12 @@ scriptwait:
 			break;
 
 		case PCD_CONSOLECOMMAND:
+		case PCD_CONSOLECOMMANDDIRECT:
 			Printf (TEXTCOLOR_RED GAMENAME " doesn't support execution of console commands from scripts\n");
-			sp -= 3;
+			if (pcd == PCD_CONSOLECOMMAND)
+				sp -= 3;
+			else
+				pc += 3;
 			break;
  		}
  	}
diff --git a/src/p_acs.h b/src/p_acs.h
index e3c502f7c..13dad4651 100644
--- a/src/p_acs.h
+++ b/src/p_acs.h
@@ -504,7 +504,7 @@ public:
 		PCD_PLAYERGOLDSKULL,
 		PCD_PLAYERBLACKCARD,
 		PCD_PLAYERSILVERCARD,
-		PCD_PLAYERONTEAM,
+		PCD_ISNETWORKGAME,
 		PCD_PLAYERTEAM,
 /*120*/	PCD_PLAYERHEALTH,
 		PCD_PLAYERARMORPOINTS,
@@ -519,7 +519,7 @@ public:
 /*130*/	PCD_LSPEC6DIRECT,		// be given names like PCD_DUMMY.
 		PCD_PRINTNAME,
 		PCD_MUSICCHANGE,
-		PCD_TEAM2FRAGPOINTS,
+		PCD_CONSOLECOMMANDDIRECT,
 		PCD_CONSOLECOMMAND,
 		PCD_SINGLEPLAYER,		// [RH] End of Skull Tag p-codes
 		PCD_FIXEDMUL,
diff --git a/src/p_local.h b/src/p_local.h
index 0acbdc35f..ac6b264d9 100644
--- a/src/p_local.h
+++ b/src/p_local.h
@@ -159,9 +159,35 @@ bool P_Thing_Raise(AActor *thing, AActor *raiser);
 bool P_Thing_CanRaise(AActor *thing);
 PClassActor *P_GetSpawnableType(int spawnnum);
 void InitSpawnablesFromMapinfo();
+int P_Thing_CheckInputNum(player_t *p, int inputnum);
 int P_Thing_Warp(AActor *caller, AActor *reference, double xofs, double yofs, double zofs, DAngle angle, int flags, double heightoffset, double radiusoffset, DAngle pitch);
 bool P_Thing_CheckProximity(AActor *self, PClass *classname, double distance, int count, int flags, int ptr);
 
+enum
+{
+	// These are the original inputs sent by the player.
+	INPUT_OLDBUTTONS,
+	INPUT_BUTTONS,
+	INPUT_PITCH,
+	INPUT_YAW,
+	INPUT_ROLL,
+	INPUT_FORWARDMOVE,
+	INPUT_SIDEMOVE,
+	INPUT_UPMOVE,
+
+	// These are the inputs, as modified by P_PlayerThink().
+	// Most of the time, these will match the original inputs, but
+	// they can be different if a player is frozen or using a
+	// chainsaw.
+	MODINPUT_OLDBUTTONS,
+	MODINPUT_BUTTONS,
+	MODINPUT_PITCH,
+	MODINPUT_YAW,
+	MODINPUT_ROLL,
+	MODINPUT_FORWARDMOVE,
+	MODINPUT_SIDEMOVE,
+	MODINPUT_UPMOVE
+};
 enum CPXF
 {
 	CPXF_ANCESTOR = 1 << 0,
diff --git a/src/p_pspr.cpp b/src/p_pspr.cpp
index 3b57dd283..ebfc14da3 100644
--- a/src/p_pspr.cpp
+++ b/src/p_pspr.cpp
@@ -1135,16 +1135,64 @@ DEFINE_ACTION_FUNCTION_PARAMS(AActor, A_Overlay)
 	PARAM_ACTION_PROLOGUE;
 	PARAM_INT		(layer);
 	PARAM_STATE_OPT	(state) { state = nullptr; }
+	PARAM_BOOL_OPT	(dontoverride)	{ dontoverride = false; }
 
 	player_t *player = self->player;
 
-	if (player == nullptr)
-		return 0;
+	if (player == nullptr || (dontoverride && (player->FindPSprite(layer) != nullptr)))
+	{
+		ACTION_RETURN_BOOL(false);
+	}
 
 	DPSprite *pspr;
 	pspr = new DPSprite(player, stateowner, layer);
 	pspr->SetState(state);
-	return 0;
+	ACTION_RETURN_BOOL(true);
+}
+
+DEFINE_ACTION_FUNCTION_PARAMS(AActor, A_ClearOverlays)
+{
+	PARAM_ACTION_PROLOGUE;
+	PARAM_INT_OPT(start) { start = 0; }
+	PARAM_INT_OPT(stop) { stop = 0; }
+	PARAM_BOOL_OPT(safety) { safety = true; }
+
+	if (!self->player)
+		ACTION_RETURN_INT(0);
+
+	player_t *player = self->player;
+	if (!start && !stop)
+	{
+		start = INT_MIN;
+		stop = safety ? PSP_TARGETCENTER - 1 : INT_MAX;
+	}
+
+	int count = 0;
+	DPSprite *pspr = player->psprites;
+	while (pspr != nullptr)
+	{
+		int id = pspr->GetID();
+
+		//Do not wipe out layer 0. Ever.
+		if (!id || id < start)
+			continue;
+		if (id > stop)
+			break;
+
+		if (safety)
+		{
+			if (id >= PSP_TARGETCENTER)
+				break;
+			else if ((id >= PSP_STRIFEHANDS && id <= PSP_WEAPON) || (id == PSP_FLASH))
+				continue;
+		}
+
+		// [MC]Don't affect non-hardcoded layers unless it's really desired.
+		pspr->SetState(nullptr);
+		count++;
+		pspr = pspr->GetNext();
+	}
+	ACTION_RETURN_INT(count);
 }
 
 //
diff --git a/src/p_things.cpp b/src/p_things.cpp
index 98826268c..e19323542 100644
--- a/src/p_things.cpp
+++ b/src/p_things.cpp
@@ -666,7 +666,36 @@ void InitSpawnablesFromMapinfo()
 	InitClassMap(SpawnableThings, SpawnablesFromMapinfo);
 	InitClassMap(StrifeTypes, ConversationIDsFromMapinfo);
 }
+int P_Thing_CheckInputNum(player_t *p, int inputnum)
+{
+	int renum = 0;
+	if (p)
+	{
+		switch (inputnum)
+		{
+		case INPUT_OLDBUTTONS:		renum = p->original_oldbuttons;			break;
+		case INPUT_BUTTONS:			renum = p->original_cmd.buttons;		break;
+		case INPUT_PITCH:			renum = p->original_cmd.pitch;			break;
+		case INPUT_YAW:				renum = p->original_cmd.yaw;			break;
+		case INPUT_ROLL:			renum = p->original_cmd.roll;			break;
+		case INPUT_FORWARDMOVE:		renum = p->original_cmd.forwardmove;	break;
+		case INPUT_SIDEMOVE:		renum = p->original_cmd.sidemove;		break;
+		case INPUT_UPMOVE:			renum = p->original_cmd.upmove;			break;
 
+		case MODINPUT_OLDBUTTONS:	renum = p->oldbuttons;					break;
+		case MODINPUT_BUTTONS:		renum = p->cmd.ucmd.buttons;			break;
+		case MODINPUT_PITCH:		renum = p->cmd.ucmd.pitch;				break;
+		case MODINPUT_YAW:			renum = p->cmd.ucmd.yaw;				break;
+		case MODINPUT_ROLL:			renum = p->cmd.ucmd.roll;				break;
+		case MODINPUT_FORWARDMOVE:	renum = p->cmd.ucmd.forwardmove;		break;
+		case MODINPUT_SIDEMOVE:		renum = p->cmd.ucmd.sidemove;			break;
+		case MODINPUT_UPMOVE:		renum = p->cmd.ucmd.upmove;				break;
+
+		default:					renum = 0;								break;
+		}
+	}
+	return renum;
+}
 bool P_Thing_CheckProximity(AActor *self, PClass *classname, double distance, int count, int flags, int ptr)
 {
 	AActor *ref = COPY_AAPTR(self, ptr);
diff --git a/src/portal.cpp b/src/portal.cpp
index 41f2e755e..f180a4fbf 100644
--- a/src/portal.cpp
+++ b/src/portal.cpp
@@ -272,14 +272,31 @@ static line_t *FindDestination(line_t *src, int tag)
 
 static void SetRotation(FLinePortal *port)
 {
-	if (port != NULL && port->mDestination != NULL)
+	if (port != nullptr && port->mDestination != nullptr)
 	{
-	line_t *dst = port->mDestination;
-	line_t *line = port->mOrigin;
-	DAngle angle = dst->Delta().Angle() - line->Delta().Angle() + 180.;
-	port->mSinRot = sindeg(angle.Degrees);	// Here precision matters so use the slower but more precise versions.
-	port->mCosRot = cosdeg(angle.Degrees);
-	port->mAngleDiff = angle;
+		if (port->mType != PORTT_LINKED)
+		{
+			line_t *dst = port->mDestination;
+			line_t *line = port->mOrigin;
+			DAngle angle = dst->Delta().Angle() - line->Delta().Angle() + 180.;
+			port->mSinRot = sindeg(angle.Degrees);	// Here precision matters so use the slower but more precise versions.
+			port->mCosRot = cosdeg(angle.Degrees);
+			port->mAngleDiff = angle;
+			if ((line->sidedef[0]->Flags & WALLF_POLYOBJ) || (dst->sidedef[0]->Flags & WALLF_POLYOBJ))
+			{
+				port->mFlags |= PORTF_POLYOBJ;
+			}
+			else
+			{
+				port->mFlags &= PORTF_POLYOBJ;
+			}
+		}
+		else
+		{
+			// Linked portals have no angular difference.
+			port->mSinRot = port->mCosRot = 0.;
+			port->mAngleDiff = 0.;
+		}
 	}
 }
 
@@ -325,11 +342,6 @@ void P_SpawnLinePortal(line_t* line)
 		{
 			port->mDefFlags = port->mType == PORTT_VISUAL ? PORTF_VISIBLE : port->mType == PORTT_TELEPORT ? PORTF_TYPETELEPORT : PORTF_TYPEINTERACTIVE;
 		}
-
-		// Get the angle between the two linedefs, for rotating
-		// orientation and velocity. Rotate 180 degrees, and flip
-		// the position across the exit linedef, if reversed.
-		SetRotation(port);
 	}
 	else if (line->args[2] == PORTT_LINKEDEE && line->args[0] == 0)
 	{
@@ -350,7 +362,6 @@ void P_SpawnLinePortal(line_t* line)
 				port->mType = PORTT_LINKED;
 				port->mAlign = PORG_ABSOLUTE;
 				port->mDefFlags = PORTF_TYPEINTERACTIVE;
-				SetRotation(port);
 
 				// we need to create the backlink here, too.
 				lines[i].portalindex = linePortals.Reserve(1);
@@ -362,8 +373,6 @@ void P_SpawnLinePortal(line_t* line)
 				port->mType = PORTT_LINKED;
 				port->mAlign = PORG_ABSOLUTE;
 				port->mDefFlags = PORTF_TYPEINTERACTIVE;
-
-				SetRotation(port);
 			}
 		}
 	}
@@ -413,6 +422,9 @@ void P_UpdatePortal(FLinePortal *port)
 			}
 		}
  	}
+
+	// Cache the angle between the two linedefs, for rotating.
+	SetRotation(port);
 }
 
 //============================================================================
@@ -593,6 +605,7 @@ void P_TranslatePortalXY(line_t* src, double& x, double& y)
 	if (!src) return;
 	FLinePortal *port = src->getPortal();
 	if (!port) return;
+	if (port->mFlags & PORTF_POLYOBJ) SetRotation(port);	// update the angle for polyportals.
 
 	// offsets from line
 	double nposx = x - src->v1->fX();
@@ -620,6 +633,7 @@ void P_TranslatePortalVXVY(line_t* src, double &velx, double &vely)
 	if (!src) return;
 	FLinePortal *port = src->getPortal();
 	if (!port) return;
+	if (port->mFlags & PORTF_POLYOBJ) SetRotation(port);	// update the angle for polyportals.
 
 	double orig_velx = velx;
 	double orig_vely = vely;
@@ -638,6 +652,7 @@ void P_TranslatePortalAngle(line_t* src, DAngle& angle)
 	if (!src) return;
 	FLinePortal *port = src->getPortal();
 	if (!port) return;
+	if (port->mFlags & PORTF_POLYOBJ) SetRotation(port);	// update the angle for polyportals.
 	angle = (angle + port->mAngleDiff).Normalized360();
 }
 
diff --git a/src/portal.h b/src/portal.h
index a87ae207f..44d636e4b 100644
--- a/src/portal.h
+++ b/src/portal.h
@@ -145,6 +145,7 @@ enum
 	PORTF_PASSABLE = 2,
 	PORTF_SOUNDTRAVERSE = 4,
 	PORTF_INTERACTIVE = 8,
+	PORTF_POLYOBJ = 16,
 
 	PORTF_TYPETELEPORT = PORTF_VISIBLE | PORTF_PASSABLE | PORTF_SOUNDTRAVERSE,
 	PORTF_TYPEINTERACTIVE = PORTF_VISIBLE | PORTF_PASSABLE | PORTF_SOUNDTRAVERSE | PORTF_INTERACTIVE,
diff --git a/src/thingdef/thingdef_codeptr.cpp b/src/thingdef/thingdef_codeptr.cpp
index 610b6b17e..7a9ac1ce0 100644
--- a/src/thingdef/thingdef_codeptr.cpp
+++ b/src/thingdef/thingdef_codeptr.cpp
@@ -312,6 +312,8 @@ DEFINE_ACTION_FUNCTION_PARAMS(AActor, GetDistance)
 			DVector3 diff = self->Vec3To(target);
 			if (checkz)
 				diff.Z += (target->Height - self->Height) / 2;
+			else
+				diff.Z = 0.;
 
 			ret->SetFloat(diff.Length());
 		}
@@ -543,6 +545,39 @@ DEFINE_ACTION_FUNCTION_PARAMS(AActor, GetCVar)
 	return 0;
 }
 
+//==========================================================================
+//
+// GetPlayerInput
+//
+// NON-ACTION function that works like ACS's GetPlayerInput.
+// Takes a pointer as anyone may or may not be a player.
+//==========================================================================
+
+DEFINE_ACTION_FUNCTION_PARAMS(AActor, GetPlayerInput)
+{
+	if (numret > 0)
+	{
+		assert(ret != nullptr);
+		PARAM_SELF_PROLOGUE(AActor);
+		PARAM_INT		(inputnum);
+		PARAM_INT_OPT	(ptr)		{ ptr = AAPTR_DEFAULT; }
+
+		AActor *mobj = COPY_AAPTR(self, ptr);
+
+		//Need a player.
+		if (!mobj || !mobj->player)
+		{
+			ret->SetInt(0);
+		}
+		else
+		{
+			ret->SetInt(P_Thing_CheckInputNum(mobj->player, inputnum));
+		}
+		return 1;
+	}
+	return 0;
+}
+
 //===========================================================================
 //
 // __decorate_internal_state__
diff --git a/wadsrc/static/actors/actor.txt b/wadsrc/static/actors/actor.txt
index 8e6f0f338..a531838d0 100644
--- a/wadsrc/static/actors/actor.txt
+++ b/wadsrc/static/actors/actor.txt
@@ -48,6 +48,7 @@ ACTOR Actor native //: Thinker
 	native int GetGibHealth();
 	native float GetCrouchFactor(int ptr = AAPTR_PLAYER1);
 	native float GetCVar(string cvar);
+	native int GetPlayerInput(int inputnum, int ptr = AAPTR_DEFAULT);
 
 	// Action functions
 	// Meh, MBF redundant functions. Only for DeHackEd support.
@@ -329,12 +330,13 @@ ACTOR Actor native //: Thinker
 	native state A_CheckSightOrRange(float distance, state label, bool two_dimension = false);
 	native state A_CheckRange(float distance, state label, bool two_dimension = false);
 	action native bool A_FaceMovementDirection(float offset = 0, float anglelimit = 0, float pitchlimit = 0, int flags = 0, int ptr = AAPTR_DEFAULT);
+	action native int A_ClearOverlays(int sstart = 0, int sstop = 0, bool safety = true);
 
 	native void A_RearrangePointers(int newtarget, int newmaster = AAPTR_DEFAULT, int newtracer = AAPTR_DEFAULT, int flags=0);
 	native void A_TransferPointer(int ptr_source, int ptr_recepient, int sourcefield, int recepientfield=AAPTR_DEFAULT, int flags=0);
 	action native A_CopyFriendliness(int ptr_source = AAPTR_MASTER);
 
-	action native A_Overlay(int layer, state start = "");
+	action native bool A_Overlay(int layer, state start = "", bool nooverride = false);
 	action native A_WeaponOffset(float wx = 0, float wy = 32, int flags = 0);
 	action native A_OverlayOffset(int layer = PSP_WEAPON, float wx = 0, float wy = 32, int flags = 0);
 	action native A_OverlayFlags(int layer, int flags, bool set);
diff --git a/wadsrc/static/actors/constants.txt b/wadsrc/static/actors/constants.txt
index 160646ff0..7b75b481d 100644
--- a/wadsrc/static/actors/constants.txt
+++ b/wadsrc/static/actors/constants.txt
@@ -593,3 +593,62 @@ enum
 	PSP_WEAPON = 1,
 	PSP_FLASH = 1000,
 };
+
+enum
+{
+	// These are the original inputs sent by the player.
+	INPUT_OLDBUTTONS,
+	INPUT_BUTTONS,
+	INPUT_PITCH,
+	INPUT_YAW,
+	INPUT_ROLL,
+	INPUT_FORWARDMOVE,
+	INPUT_SIDEMOVE,
+	INPUT_UPMOVE,
+
+	// These are the inputs, as modified by P_PlayerThink().
+	// Most of the time, these will match the original inputs, but
+	// they can be different if a player is frozen or using a
+	// chainsaw.
+	MODINPUT_OLDBUTTONS,
+	MODINPUT_BUTTONS,
+	MODINPUT_PITCH,
+	MODINPUT_YAW,
+	MODINPUT_ROLL,
+	MODINPUT_FORWARDMOVE,
+	MODINPUT_SIDEMOVE,
+	MODINPUT_UPMOVE
+};
+
+enum
+{
+	BT_ATTACK		= 1<<0,	// Press "Fire".
+	BT_USE			= 1<<1,	// Use button, to open doors, activate switches.
+    BT_JUMP			= 1<<2,
+    BT_CROUCH		= 1<<3,
+	BT_TURN180		= 1<<4,
+	BT_ALTATTACK	= 1<<5,	// Press your other "Fire".
+	BT_RELOAD		= 1<<6,	// [XA] Reload key. Causes state jump in A_WeaponReady.
+	BT_ZOOM			= 1<<7,	// [XA] Zoom key. Ditto.
+
+	// The rest are all ignored by the play simulation and are for scripts.
+	BT_SPEED		= 1<<8,
+	BT_STRAFE		= 1<<9,
+
+	BT_MOVERIGHT	= 1<<10,
+	BT_MOVELEFT		= 1<<11,
+	BT_BACK			= 1<<12,
+	BT_FORWARD		= 1<<13,
+	BT_RIGHT		= 1<<14,
+	BT_LEFT			= 1<<15,
+	BT_LOOKUP		= 1<<16,
+	BT_LOOKDOWN		= 1<<17,
+	BT_MOVEUP		= 1<<18,
+	BT_MOVEDOWN		= 1<<19,
+	BT_SHOWSCORES	= 1<<20,
+
+	BT_USER1		= 1<<21,
+	BT_USER2		= 1<<22,
+	BT_USER3		= 1<<23,
+	BT_USER4		= 1<<24,
+};
diff --git a/wadsrc/static/compatibility.txt b/wadsrc/static/compatibility.txt
index d5f831d50..7a16b9ae0 100644
--- a/wadsrc/static/compatibility.txt
+++ b/wadsrc/static/compatibility.txt
@@ -425,6 +425,11 @@ D0139194F7817BF06F3988DFC47DB38D // Whispers of Satan map29
 	multiexit
 }
 
+C98F79709BD7E0E4C19026AB9575EC6F // cc-cod.zip:codlev.wad map07
+{
+	maskedmidtex
+}
+
 D7F6E9F08C39A17026349A04F8C0B0BE // Return to Hadron, e1m9
 19D03FFC875589E21EDBB7AB74EF4AEF // Return to Hadron, e1m9, 2016.01.03 update
 {