diff --git a/src/actor.h b/src/actor.h
index 93d2834a8..a9ce18a57 100644
--- a/src/actor.h
+++ b/src/actor.h
@@ -380,6 +380,8 @@ enum ActorFlag7
 	MF7_LAXTELEFRAGDMG	= 0x00100000,	// [MC] Telefrag damage can be reduced.
 	MF7_ICESHATTER		= 0x00200000,	// [MC] Shatters ice corpses regardless of damagetype.
 	MF7_ALLOWTHRUFLAGS	= 0x00400000,	// [MC] Allow THRUACTORS and the likes on puffs to prevent mod breakage.
+	MF7_USEKILLSCRIPTS	= 0x00800000,	// [JM] Use "KILL" Script on death if not forced by GameInfo.
+	MF7_NOKILLSCRIPTS	= 0x01000000,	// [JM] No "KILL" Script on death whatsoever, even if forced by GameInfo.
 };
 
 // --- mobj.renderflags ---
diff --git a/src/d_dehacked.cpp b/src/d_dehacked.cpp
index f79924b2b..29a087fac 100644
--- a/src/d_dehacked.cpp
+++ b/src/d_dehacked.cpp
@@ -921,7 +921,7 @@ static int PatchThing (int thingy)
 		{
 			if (stricmp (Line1, "Speed") == 0)
 			{
-				info->Speed = val;	// handle fixed point later.
+				info->Speed = (signed long)val;	// handle fixed point later.
 			}
 			else if (stricmp (Line1, "Width") == 0)
 			{
@@ -2507,7 +2507,7 @@ static bool DoDehPatch()
 	cont = 0;
 	if (0 == strncmp (PatchFile, "Patch File for DeHackEd v", 25))
 	{
-		if (PatchFile[25] < '3')
+		if (PatchFile[25] < '3' && PatchFile[25] != '2' && PatchFile[27] != '3')
 		{
 			Printf (PRINT_BOLD, "\"%s\" is an old and unsupported DeHackEd patch\n", PatchName);
 			delete[] PatchName;
@@ -2544,7 +2544,7 @@ static bool DoDehPatch()
 		{}
 	}
 
-	if (pversion != 6)
+	if (pversion != 5 && pversion != 6)
 	{
 		Printf ("DeHackEd patch version is %d.\nUnexpected results may occur.\n", pversion);
 	}
diff --git a/src/g_shared/a_morph.cpp b/src/g_shared/a_morph.cpp
index d0e807c3e..98af9ff25 100644
--- a/src/g_shared/a_morph.cpp
+++ b/src/g_shared/a_morph.cpp
@@ -81,6 +81,10 @@ bool P_MorphPlayer (player_t *activator, player_t *p, PClassPlayerPawn *spawntyp
 	morphed = static_cast<APlayerPawn *>(Spawn (spawntype, actor->Pos(), NO_REPLACE));
 	EndAllPowerupEffects(actor->Inventory);
 	DObject::StaticPointerSubstitution (actor, morphed);
+	if ((style & MORPH_TRANSFERTRANSLATION) && !(morphed->flags2 & MF2_DONTTRANSLATE))
+	{
+		morphed->Translation = actor->Translation;
+	}
 	if ((actor->tid != 0) && (style & MORPH_NEWTIDBEHAVIOUR))
 	{
 		morphed->tid = actor->tid;
@@ -382,6 +386,10 @@ bool P_MorphMonster (AActor *actor, PClassActor *spawntype, int duration, int st
 
 	morphed = static_cast<AMorphedMonster *>(Spawn (spawntype, actor->Pos(), NO_REPLACE));
 	DObject::StaticPointerSubstitution (actor, morphed);
+	if ((style & MORPH_TRANSFERTRANSLATION) && !(morphed->flags2 & MF2_DONTTRANSLATE))
+	{
+		morphed->Translation = actor->Translation;
+	}
 	morphed->tid = actor->tid;
 	morphed->Angles.Yaw = actor->Angles.Yaw;
 	morphed->UnmorphedMe = actor;
diff --git a/src/g_shared/a_morph.h b/src/g_shared/a_morph.h
index f797c75e6..e770e418e 100644
--- a/src/g_shared/a_morph.h
+++ b/src/g_shared/a_morph.h
@@ -25,6 +25,7 @@ enum
 	MORPH_UNDOBYDEATHSAVES	= 0x00000800,	// Actor (if unmorphed when killed) regains their health and doesn't die
 	MORPH_UNDOBYTIMEOUT		= 0x00001000,	// Player unmorphs once countdown expires
 	MORPH_UNDOALWAYS		= 0x00002000,	// Powerups must always unmorph, no matter what.
+	MORPH_TRANSFERTRANSLATION = 0x00004000,	// Transfer translation from the original actor to the morphed one
 
 	MORPH_STANDARDUNDOING	= MORPH_UNDOBYTOMEOFPOWER | MORPH_UNDOBYCHAOSDEVICE | MORPH_UNDOBYTIMEOUT,
 };
diff --git a/src/g_shared/a_pickups.h b/src/g_shared/a_pickups.h
index 26b27e202..0023cd271 100644
--- a/src/g_shared/a_pickups.h
+++ b/src/g_shared/a_pickups.h
@@ -378,6 +378,8 @@ enum
 	WIF_MELEEWEAPON =		0x00008000,	// melee weapon. Used by bots and monster AI.
 	WIF_DEHAMMO	=			0x00010000,	// Uses Doom's original amount of ammo for the respective attack functions so that old DEHACKED patches work as intended.
 										// AmmoUse1 will be set to the first attack's ammo use so that checking for empty weapons still works
+	WIF_NODEATHDESELECT =	0x00020000, // Don't jump to the Deselect state when the player dies
+	WIF_NODEATHINPUT =		0x00040000, // The weapon cannot be fired/reloaded/whatever when the player is dead
 	WIF_CHEATNOTWEAPON	=	0x08000000,	// Give cheat considers this not a weapon (used by Sigil)
 
 	// Flags used only by bot AI:
diff --git a/src/g_shared/shared_hud.cpp b/src/g_shared/shared_hud.cpp
index 46cf61d54..3a8dc388c 100644
--- a/src/g_shared/shared_hud.cpp
+++ b/src/g_shared/shared_hud.cpp
@@ -539,6 +539,38 @@ static void AddAmmoToList(AWeapon * weapdef)
 	}
 }
 
+static int GetDigitCount(int value)
+{
+	int digits = 0;
+
+	do
+	{
+		value /= 10;
+		++digits;
+	}
+	while (0 != value);
+
+	return digits;
+}
+
+static void GetAmmoTextLengths(player_t *CPlayer, int& ammocur, int& ammomax)
+{
+	for (auto type : orderedammos)
+	{
+		AAmmo * ammoitem = static_cast<AAmmo*>(CPlayer->mo->FindInventory(type));
+		AAmmo * inv = nullptr == ammoitem
+			? static_cast<AAmmo*>(GetDefaultByType(type))
+			: ammoitem;
+		assert(nullptr != inv);
+
+		ammocur = MAX(ammocur, nullptr == ammoitem ? 0 : ammoitem->Amount);
+		ammomax = MAX(ammomax, inv->MaxAmount);
+	}
+
+	ammocur = GetDigitCount(ammocur);
+	ammomax = GetDigitCount(ammomax);
+}
+
 static int DrawAmmo(player_t *CPlayer, int x, int y)
 {
 
@@ -586,7 +618,13 @@ static int DrawAmmo(player_t *CPlayer, int x, int y)
 
 	// ok, we got all ammo types. Now draw the list back to front (bottom to top)
 
-	int def_width = ConFont->StringWidth("000/000");
+	int ammocurlen = 0;
+	int ammomaxlen = 0;
+	GetAmmoTextLengths(CPlayer, ammocurlen, ammomaxlen);
+
+	mysnprintf(buf, countof(buf), "%0*d/%0*d", ammocurlen, 0, ammomaxlen, 0);
+
+	int def_width = ConFont->StringWidth(buf);
 	int yadd = ConFont->GetHeight();
 
 	int xtext = x - def_width;
@@ -618,7 +656,7 @@ static int DrawAmmo(player_t *CPlayer, int x, int y)
 		int maxammo = inv->MaxAmount;
 		int ammo = ammoitem? ammoitem->Amount : 0;
 
-		mysnprintf(buf, countof(buf), "%3d/%3d", ammo, maxammo);
+		mysnprintf(buf, countof(buf), "%*d/%*d", ammocurlen, ammo, ammomaxlen, maxammo);
 
 		int tex_width= clamp<int>(ConFont->StringWidth(buf)-def_width, 0, 1000);
 
diff --git a/src/gi.cpp b/src/gi.cpp
index 313df4f0b..9d45d2724 100644
--- a/src/gi.cpp
+++ b/src/gi.cpp
@@ -354,6 +354,7 @@ void FMapInfoParser::ParseGameInfo()
 		GAMEINFOKEY_PATCH(mStatscreenFinishedFont, "statscreen_finishedpatch")
 		GAMEINFOKEY_PATCH(mStatscreenEnteringFont, "statscreen_enteringpatch")
 		GAMEINFOKEY_BOOL(norandomplayerclass, "norandomplayerclass")
+		GAMEINFOKEY_BOOL(forcekillscripts, "forcekillscripts") // [JM] Force kill scripts on thing death. (MF7_NOKILLSCRIPTS overrides.)
 
 		else
 		{
diff --git a/src/gi.h b/src/gi.h
index 2786b3425..c5b8f79cf 100644
--- a/src/gi.h
+++ b/src/gi.h
@@ -173,6 +173,7 @@ struct gameinfo_t
 	FGIFont mStatscreenFinishedFont;
 	FGIFont mStatscreenEnteringFont;
 	bool norandomplayerclass;
+	bool forcekillscripts;
 
 	const char *GetFinalePage(unsigned int num) const;
 };
diff --git a/src/m_cheat.cpp b/src/m_cheat.cpp
index 6b2f4f595..e78174a55 100644
--- a/src/m_cheat.cpp
+++ b/src/m_cheat.cpp
@@ -348,7 +348,7 @@ void cht_DoCheat (player_t *player, int cheat)
 					P_SetPsprite(player, PSP_WEAPON, player->ReadyWeapon->GetUpState());
 				}
 
-				if (player->morphTics > 0)
+				if (player->morphTics)
 				{
 					P_UndoPlayerMorph(player, player);
 				}
diff --git a/src/menu/menu.h b/src/menu/menu.h
index aa4058f87..04ae7e3f7 100644
--- a/src/menu/menu.h
+++ b/src/menu/menu.h
@@ -418,7 +418,7 @@ public:
 
 class FPlayerNameBox : public FListMenuItemSelectable
 {
-	const char *mText;
+	FString mText;
 	FFont *mFont;
 	EColorRange mFontColor;
 	int mFrameSize;
@@ -447,7 +447,7 @@ public:
 class FValueTextItem : public FListMenuItemSelectable
 {
 	TArray<FString> mSelections;
-	const char *mText;
+	FString mText;
 	int mSelection;
 	FFont *mFont;
 	EColorRange mFontColor;
@@ -472,7 +472,7 @@ public:
 
 class FSliderItem : public FListMenuItemSelectable
 {
-	const char *mText;
+	FString mText;
 	FFont *mFont;
 	EColorRange mFontColor;
 	int mMinrange, mMaxrange;
@@ -539,7 +539,7 @@ public:
 class FOptionMenuItem : public FListMenuItem
 {
 protected:
-	char *mLabel;
+	FString mLabel;
 	bool mCentered;
 
 	void drawLabel(int indent, int y, EColorRange color, bool grayed = false);
@@ -548,7 +548,7 @@ public:
 	FOptionMenuItem(const char *text, FName action = NAME_None, bool center = false)
 		: FListMenuItem(0, 0, action)
 	{
-		mLabel = copystring(text);
+		mLabel = text;
 		mCentered = center;
 	}
 
diff --git a/src/menu/menudef.cpp b/src/menu/menudef.cpp
index 1948153e4..618189b4f 100644
--- a/src/menu/menudef.cpp
+++ b/src/menu/menudef.cpp
@@ -781,7 +781,15 @@ static void ParseOptionMenuBody(FScanner &sc, FOptionMenuDescriptor *desc)
 			FString label = sc.String;
 			sc.MustGetStringName(",");
 			sc.MustGetString();
-			FOptionMenuItem *it = new FOptionMenuItemSafeCommand(label, sc.String);
+			FString command = sc.String;
+			FString prompt;
+			// Check for optional custom prompt
+			if (sc.CheckString(","))
+			{
+				sc.MustGetString();
+				prompt = sc.String;
+			}
+			FOptionMenuItem *it = new FOptionMenuItemSafeCommand(label, command, prompt);
 			desc->mItems.Push(it);
 		}
 		else if (sc.Compare("Control") || sc.Compare("MapControl"))
diff --git a/src/menu/optionmenu.cpp b/src/menu/optionmenu.cpp
index f6633c76a..efea7d910 100644
--- a/src/menu/optionmenu.cpp
+++ b/src/menu/optionmenu.cpp
@@ -479,7 +479,6 @@ void DOptionMenu::Drawer ()
 
 FOptionMenuItem::~FOptionMenuItem()
 {
-	if (mLabel != NULL) delete [] mLabel;
 }
 
 int FOptionMenuItem::Draw(FOptionMenuDescriptor *desc, int y, int indent, bool selected)
@@ -507,14 +506,14 @@ int  FOptionMenuItem::GetIndent()
 	{
 		return 0;
 	}
-	const char *label = mLabel;
+	const char *label = mLabel.GetChars();
 	if (*label == '$') label = GStrings(label+1);
 	return SmallFont->StringWidth(label);
 }
 
 void FOptionMenuItem::drawLabel(int indent, int y, EColorRange color, bool grayed)
 {
-	const char *label = mLabel;
+	const char *label = mLabel.GetChars();
 	if (*label == '$') label = GStrings(label+1);
 
 	int overlay = grayed? MAKEARGB(96,48,0,0) : 0;
diff --git a/src/menu/optionmenuitems.h b/src/menu/optionmenuitems.h
index 3131e35f7..76718809e 100644
--- a/src/menu/optionmenuitems.h
+++ b/src/menu/optionmenuitems.h
@@ -103,9 +103,13 @@ public:
 class FOptionMenuItemSafeCommand : public FOptionMenuItemCommand
 {
 	// action is a CCMD
+protected:
+	FString mPrompt;
+
 public:
-	FOptionMenuItemSafeCommand(const char *label, const char *menu)
+	FOptionMenuItemSafeCommand(const char *label, const char *menu, const char *prompt)
 		: FOptionMenuItemCommand(label, menu)
+		, mPrompt(prompt)
 	{
 	}
 
@@ -121,9 +125,13 @@ public:
 
 	bool Activate()
 	{
-		const char *msg = GStrings("SAFEMESSAGE");
+		const char *msg = mPrompt.IsNotEmpty() ? mPrompt.GetChars() : "$SAFEMESSAGE";
+		if (*msg == '$')
+		{
+			msg = GStrings(msg + 1);
+		}
 
-		const char *actionLabel = mLabel;
+		const char *actionLabel = mLabel.GetChars();
 		if (actionLabel != NULL)
 		{
 			if (*actionLabel == '$')
@@ -528,7 +536,7 @@ public:
 
 	int Draw(FOptionMenuDescriptor *desc, int y, int indent, bool selected)
 	{
-		const char *txt = mCurrent? mAltText.GetChars() : mLabel;
+		const char *txt = mCurrent? mAltText.GetChars() : mLabel.GetChars();
 		if (*txt == '$') txt = GStrings(txt + 1);
 		int w = SmallFont->StringWidth(txt) * CleanXfac_1;
 		int x = (screen->GetWidth() - w) / 2;
diff --git a/src/menu/playermenu.cpp b/src/menu/playermenu.cpp
index cf63283ba..ce542c2f2 100644
--- a/src/menu/playermenu.cpp
+++ b/src/menu/playermenu.cpp
@@ -64,7 +64,7 @@ EXTERN_CVAR (Bool, cl_run)
 FPlayerNameBox::FPlayerNameBox(int x, int y, int height, int frameofs, const char *text, FFont *font, EColorRange color, FName action)
 : FListMenuItemSelectable(x, y, height, action)
 {
-	mText = copystring(text);
+	mText = text;
 	mFont = font;
 	mFontColor = color;
 	mFrameSize = frameofs;
@@ -74,7 +74,6 @@ FPlayerNameBox::FPlayerNameBox(int x, int y, int height, int frameofs, const cha
 
 FPlayerNameBox::~FPlayerNameBox()
 {
-	if (mText != NULL) delete [] mText;
 }
 
 //=============================================================================
@@ -220,7 +219,7 @@ bool FPlayerNameBox::MenuEvent(int mkey, bool fromcontroller)
 FValueTextItem::FValueTextItem(int x, int y, int height, const char *text, FFont *font, EColorRange color, EColorRange valuecolor, FName action, FName values)
 : FListMenuItemSelectable(x, y, height, action)
 {
-	mText = copystring(text);
+	mText = text;
 	mFont = font;
 	mFontColor = color;
 	mFontColor2 = valuecolor;
@@ -240,7 +239,6 @@ FValueTextItem::FValueTextItem(int x, int y, int height, const char *text, FFont
 
 FValueTextItem::~FValueTextItem()
 {
-	if (mText != NULL) delete [] mText;
 }
 
 //=============================================================================
@@ -341,7 +339,7 @@ void FValueTextItem::Drawer(bool selected)
 FSliderItem::FSliderItem(int x, int y, int height, const char *text, FFont *font, EColorRange color, FName action, int min, int max, int step)
 : FListMenuItemSelectable(x, y, height, action)
 {
-	mText = copystring(text);
+	mText = text;
 	mFont = font;
 	mFontColor = color;
 	mSelection = 0;
@@ -352,7 +350,6 @@ FSliderItem::FSliderItem(int x, int y, int height, const char *text, FFont *font
 
 FSliderItem::~FSliderItem()
 {
-	if (mText != NULL) delete [] mText;
 }
 
 //=============================================================================
diff --git a/src/p_acs.cpp b/src/p_acs.cpp
index 919834a06..01953cad9 100644
--- a/src/p_acs.cpp
+++ b/src/p_acs.cpp
@@ -3719,6 +3719,7 @@ enum
 	APROP_DamageMultiplier=43,
 	APROP_MaxStepHeight	= 44,
 	APROP_MaxDropOffHeight= 45,
+	APROP_DamageType	= 46,
 };
 
 // These are needed for ACS's APROP_RenderStyle
@@ -3978,6 +3979,9 @@ void DLevelScript::DoSetActorProperty (AActor *actor, int property, int value)
 		actor->MaxDropOffHeight = ACSToDouble(value);
 		break;
 
+	case APROP_DamageType:
+		actor->DamageType = FBehavior::StaticLookupString(value);
+		break;
 
 	default:
 		// do nothing.
@@ -4081,6 +4085,7 @@ int DLevelScript::GetActorProperty (int tid, int property)
 	case APROP_Friction:	return DoubleToACS(actor->Friction);
 	case APROP_MaxStepHeight: return DoubleToACS(actor->MaxStepHeight);
 	case APROP_MaxDropOffHeight: return DoubleToACS(actor->MaxDropOffHeight);
+	case APROP_DamageType:	return GlobalACSStrings.AddString(actor->DamageType);
 
 	default:				return 0;
 	}
@@ -4153,6 +4158,7 @@ int DLevelScript::CheckActorProperty (int tid, int property, int value)
 		case APROP_ActiveSound:	string = actor->ActiveSound; break; 
 		case APROP_Species:		string = actor->GetSpecies(); break;
 		case APROP_NameTag:		string = actor->GetTag(); break;
+		case APROP_DamageType:	string = actor->DamageType; break;
 	}
 	if (string == NULL) string = "";
 	return (!stricmp(string, FBehavior::StaticLookupString(value)));
diff --git a/src/p_acs.h b/src/p_acs.h
index 13dad4651..243e2ccf3 100644
--- a/src/p_acs.h
+++ b/src/p_acs.h
@@ -270,6 +270,8 @@ enum
 	SCRIPT_Unloading	= 13,
 	SCRIPT_Disconnect	= 14,
 	SCRIPT_Return		= 15,
+	SCRIPT_Event		= 16, // [BB]
+	SCRIPT_Kill			= 17, // [JM]
 };
 
 // Script flags
diff --git a/src/p_interaction.cpp b/src/p_interaction.cpp
index 8890d3592..9f50c9ab5 100644
--- a/src/p_interaction.cpp
+++ b/src/p_interaction.cpp
@@ -379,6 +379,12 @@ void AActor::Die (AActor *source, AActor *inflictor, int dmgflags)
 		target = source;
 	}
 
+	// [JM] Fire KILL type scripts for actor. Not needed for players, since they have the "DEATH" script type.
+	if (!player && !(flags7 & MF7_NOKILLSCRIPTS) && ((flags7 & MF7_USEKILLSCRIPTS) || gameinfo.forcekillscripts))
+	{
+		FBehavior::StaticStartTypedScripts(SCRIPT_Kill, this, true, 0, true);
+	}
+
 	flags &= ~(MF_SHOOTABLE|MF_FLOAT|MF_SKULLFLY);
 	if (!(flags4 & MF4_DONTFALL)) flags&=~MF_NOGRAVITY;
 	flags |= MF_DROPOFF;
diff --git a/src/p_lnspec.cpp b/src/p_lnspec.cpp
index c7d801cbb..307529636 100644
--- a/src/p_lnspec.cpp
+++ b/src/p_lnspec.cpp
@@ -2552,7 +2552,7 @@ FUNC(LS_Line_AlignFloor)
 FUNC(LS_Line_SetTextureOffset)
 // Line_SetTextureOffset (id, x, y, side, flags)
 {
-	const double NO_CHANGE = FLT_MAX;
+	const int NO_CHANGE = 32767 << 16;
 	double farg1 = arg1 / 65536.;
 	double farg2 = arg2 / 65536.;
 
@@ -2607,7 +2607,7 @@ FUNC(LS_Line_SetTextureOffset)
 FUNC(LS_Line_SetTextureScale)
 // Line_SetTextureScale (id, x, y, side, flags)
 {
-	const double NO_CHANGE = FLT_MAX;
+	const int NO_CHANGE = 32767 << 16;
 	double farg1 = arg1 / 65536.;
 	double farg2 = arg2 / 65536.;
 
diff --git a/src/p_local.h b/src/p_local.h
index 42b4da7e7..4b8b40a85 100644
--- a/src/p_local.h
+++ b/src/p_local.h
@@ -372,6 +372,7 @@ enum	// P_RailAttack / A_RailAttack / A_CustomRailgun / P_DrawRailTrail flags
 	RAF_EXPLICITANGLE = 4,
 	RAF_FULLBRIGHT = 8,
 	RAF_CENTERZ = 16,
+	RAF_NORANDOMPUFFZ = 32,
 };
 
 
diff --git a/src/p_map.cpp b/src/p_map.cpp
index 1684ee534..106c93152 100644
--- a/src/p_map.cpp
+++ b/src/p_map.cpp
@@ -4725,6 +4725,12 @@ void P_RailAttack(FRailParams *p)
 		}
 	}
 
+	int puffflags = 0;
+	if (p->flags & RAF_NORANDOMPUFFZ)
+	{
+		puffflags |= PF_NORANDOMZ;
+	}
+
 	DVector2 xy = source->Vec2Angle(p->offset_xy, angle - 90.);
 
 	RailData rail_data;
@@ -4777,7 +4783,7 @@ void P_RailAttack(FRailParams *p)
 		bool spawnpuff;
 		bool bleed = false;
 
-		int puffflags = PF_HITTHING;
+		int actorpuffflags = puffflags | PF_HITTHING;
 		AActor *hitactor = rail_data.RailHits[i].HitActor;
 		DVector3 &hitpos = rail_data.RailHits[i].HitPos;
 		DAngle hitangle = rail_data.RailHits[i].HitAngle;
@@ -4790,7 +4796,7 @@ void P_RailAttack(FRailParams *p)
 		else
 		{
 			spawnpuff = (puffclass != NULL && puffDefaults->flags3 & MF3_ALWAYSPUFF);
-			puffflags |= PF_HITTHINGBLEED; // [XA] Allow for puffs to jump to XDeath state.
+			actorpuffflags |= PF_HITTHINGBLEED; // [XA] Allow for puffs to jump to XDeath state.
 			if (!(puffDefaults->flags3 & MF3_BLOODLESSIMPACT))
 			{
 				bleed = true;
@@ -4798,7 +4804,7 @@ void P_RailAttack(FRailParams *p)
 		}
 		if (spawnpuff)
 		{
-			P_SpawnPuff(source, puffclass, hitpos, hitangle, hitangle - 90, 1, puffflags, hitactor);
+			P_SpawnPuff(source, puffclass, hitpos, hitangle, hitangle - 90, 1, actorpuffflags, hitactor);
 		}
 		
 		int dmgFlagPass = DMG_INFLICTOR_IS_PUFF;
@@ -4827,7 +4833,7 @@ void P_RailAttack(FRailParams *p)
 
 		if (puffclass != NULL && puffDefaults->flags3 & MF3_ALWAYSPUFF)
 		{
-			puff = P_SpawnPuff(source, puffclass, trace.HitPos, trace.SrcAngleFromTarget, trace.SrcAngleFromTarget - 90, 1, 0);
+			puff = P_SpawnPuff(source, puffclass, trace.HitPos, trace.SrcAngleFromTarget, trace.SrcAngleFromTarget - 90, 1, puffflags);
 			if (puff && (trace.Line != NULL) && (trace.Line->special == Line_Horizon) && !(puff->flags3 & MF3_SKYEXPLODE))
 				puff->Destroy();
 		}
@@ -4842,7 +4848,7 @@ void P_RailAttack(FRailParams *p)
 		AActor* puff = NULL;
 		if (puffclass != NULL && puffDefaults->flags3 & MF3_ALWAYSPUFF)
 		{
-			puff = P_SpawnPuff(source, puffclass, trace.HitPos, trace.SrcAngleFromTarget, trace.SrcAngleFromTarget - 90, 1, 0);
+			puff = P_SpawnPuff(source, puffclass, trace.HitPos, trace.SrcAngleFromTarget, trace.SrcAngleFromTarget - 90, 1, puffflags);
 			if (puff && !(puff->flags3 & MF3_SKYEXPLODE) &&
 				(((trace.HitType == TRACE_HitFloor) && (puff->floorpic == skyflatnum)) ||
 				((trace.HitType == TRACE_HitCeiling) && (puff->ceilingpic == skyflatnum))))
diff --git a/src/p_pspr.cpp b/src/p_pspr.cpp
index bad9c2d73..350acc3fd 100644
--- a/src/p_pspr.cpp
+++ b/src/p_pspr.cpp
@@ -510,7 +510,7 @@ void P_DropWeapon (player_t *player)
 	}
 	// Since the weapon is dropping, stop blocking switching.
 	player->WeaponState &= ~WF_DISABLESWITCH;
-	if (player->ReadyWeapon != nullptr)
+	if ((player->ReadyWeapon != nullptr) && (player->health > 0 || !(player->ReadyWeapon->WeaponFlags & WIF_NODEATHDESELECT)))
 	{
 		P_SetPsprite(player, PSP_WEAPON, player->ReadyWeapon->GetDownState());
 	}
@@ -1396,20 +1396,23 @@ void player_t::TickPSprites()
 		pspr = pspr->Next;
 	}
 
-	if (ReadyWeapon == nullptr && (health > 0 || mo->DamageType != NAME_Fire))
+	if ((health > 0) || (ReadyWeapon != nullptr && !(ReadyWeapon->WeaponFlags & WIF_NODEATHINPUT)))
 	{
-		if (PendingWeapon != WP_NOCHANGE)
-			P_BringUpWeapon(this);
-	}
-	else
-	{
-		P_CheckWeaponSwitch(this);
-		if (WeaponState & (WF_WEAPONREADY | WF_WEAPONREADYALT))
+		if (ReadyWeapon == nullptr)
 		{
-			P_CheckWeaponFire(this);
+			if (PendingWeapon != WP_NOCHANGE)
+				P_BringUpWeapon(this);
+		}
+		else
+		{
+			P_CheckWeaponSwitch(this);
+			if (WeaponState & (WF_WEAPONREADY | WF_WEAPONREADYALT))
+			{
+				P_CheckWeaponFire(this);
+			}
+			// Check custom buttons
+			P_CheckWeaponButtons(this);
 		}
-		// Check custom buttons
-		P_CheckWeaponButtons(this);
 	}
 }
 
diff --git a/src/p_things.cpp b/src/p_things.cpp
index e19323542..6f01715ad 100644
--- a/src/p_things.cpp
+++ b/src/p_things.cpp
@@ -925,6 +925,7 @@ int P_Thing_Warp(AActor *caller, AActor *reference, double xofs, double yofs, do
 			{
 				caller->AddZ(reference->GetBobOffset());
 			}
+			P_TryMove(caller, caller->Pos(), false);
 		}
 		return true;
 	}
diff --git a/src/r_things.cpp b/src/r_things.cpp
index 74707ff72..f93f34100 100644
--- a/src/r_things.cpp
+++ b/src/r_things.cpp
@@ -2516,7 +2516,7 @@ void R_ProjectParticle (particle_t *particle, const sector_t *sector, int shade,
 	if (x1 >= x2)
 		return;
 
-	yscale = xs_RoundToInt(YaspectMul * xscale);
+	yscale = YaspectMul * xscale;
 	ty = particle->Pos.Z - ViewPos.Z;
 	y1 = xs_RoundToInt(CenterY - (ty + psize) * yscale);
 	y2 = xs_RoundToInt(CenterY - (ty - psize) * yscale);
diff --git a/src/thingdef/thingdef_codeptr.cpp b/src/thingdef/thingdef_codeptr.cpp
index 63ba6ec30..d1933e142 100644
--- a/src/thingdef/thingdef_codeptr.cpp
+++ b/src/thingdef/thingdef_codeptr.cpp
@@ -6129,6 +6129,7 @@ enum DMSS
 	DMSS_EXFILTER			= 64,	//Changes filter into a blacklisted class instead of whitelisted.
 	DMSS_EXSPECIES			= 128,	// ^ but with species instead.
 	DMSS_EITHER				= 256,  //Allow either type or species to be affected.
+	DMSS_INFLICTORDMGTYPE	= 512,	//Ignore the passed damagetype and use the inflictor's instead.
 };
 
 static void DoDamage(AActor *dmgtarget, AActor *inflictor, AActor *source, int amount, FName DamageType, int flags, PClassActor *filter, FName species)
@@ -6153,6 +6154,9 @@ static void DoDamage(AActor *dmgtarget, AActor *inflictor, AActor *source, int a
 	
 		if (amount > 0)
 		{ //Should wind up passing them through just fine.
+			if (flags & DMSS_INFLICTORDMGTYPE)
+				DamageType = inflictor->DamageType;
+
 			P_DamageMobj(dmgtarget, inflictor, source, amount, DamageType, dmgFlags);
 		}
 		else if (amount < 0)
@@ -7184,3 +7188,34 @@ DEFINE_ACTION_FUNCTION_PARAMS(AActor, A_FaceMovementDirection)
 	ACTION_RETURN_BOOL(true);
 }
 
+//==========================================================================
+//
+// A_CopySpriteFrame(from, to, flags)
+//
+// Copies the sprite and/or frame from one pointer to another.
+//==========================================================================
+enum CPSFFlags
+{
+	CPSF_NOSPRITE =			1,
+	CPSF_NOFRAME =			1 << 1,
+};
+
+DEFINE_ACTION_FUNCTION_PARAMS(AActor, A_CopySpriteFrame)
+{
+	PARAM_SELF_PROLOGUE(AActor);
+	PARAM_INT(from);
+	PARAM_INT(to);
+	PARAM_INT_OPT(flags) { flags = 0; }
+
+	AActor *copyfrom = COPY_AAPTR(self, from);
+	AActor *copyto = COPY_AAPTR(self, to);
+
+	if (copyfrom == copyto || copyfrom == nullptr || copyto == nullptr || ((flags & CPSF_NOSPRITE) && (flags & CPSF_NOFRAME)))
+	{
+		ACTION_RETURN_BOOL(false);
+	}
+	
+	if (!(flags & CPSF_NOSPRITE))	copyto->sprite = copyfrom->sprite;
+	if (!(flags & CPSF_NOFRAME))	copyto->frame = copyfrom->frame;
+	ACTION_RETURN_BOOL(true);
+}
diff --git a/src/thingdef/thingdef_data.cpp b/src/thingdef/thingdef_data.cpp
index a86e98566..0768f80c8 100644
--- a/src/thingdef/thingdef_data.cpp
+++ b/src/thingdef/thingdef_data.cpp
@@ -257,6 +257,8 @@ static FFlagDef ActorFlagDefs[]=
 	DEFINE_FLAG(MF7, LAXTELEFRAGDMG, AActor, flags7),
 	DEFINE_FLAG(MF7, ICESHATTER, AActor, flags7),
 	DEFINE_FLAG(MF7, ALLOWTHRUFLAGS, AActor, flags7),
+	DEFINE_FLAG(MF7, USEKILLSCRIPTS, AActor, flags7),
+	DEFINE_FLAG(MF7, NOKILLSCRIPTS, AActor, flags7),
 
 	// Effect flags
 	DEFINE_FLAG(FX, VISIBILITYPULSE, AActor, effects),
@@ -362,6 +364,8 @@ static FFlagDef WeaponFlagDefs[] =
 	DEFINE_FLAG(WIF, NO_AUTO_SWITCH, AWeapon, WeaponFlags),
 	DEFINE_FLAG(WIF, AMMO_CHECKBOTH, AWeapon, WeaponFlags),
 	DEFINE_FLAG(WIF, NOAUTOAIM, AWeapon, WeaponFlags),
+	DEFINE_FLAG(WIF, NODEATHDESELECT, AWeapon, WeaponFlags),
+	DEFINE_FLAG(WIF, NODEATHINPUT, AWeapon, WeaponFlags),
 	
 	DEFINE_DUMMY_FLAG(NOLMS),
 	DEFINE_FLAG(WIF, ALT_USES_BOTH, AWeapon, WeaponFlags),
diff --git a/src/thingdef/thingdef_parse.cpp b/src/thingdef/thingdef_parse.cpp
index c97930277..f4bad69bb 100644
--- a/src/thingdef/thingdef_parse.cpp
+++ b/src/thingdef/thingdef_parse.cpp
@@ -710,6 +710,7 @@ static int ParseMorphStyle (FScanner &sc)
 		{ "MRF_UNDOBYDEATHFORCED",	MORPH_UNDOBYDEATHFORCED},  
 		{ "MRF_UNDOBYDEATHSAVES",	MORPH_UNDOBYDEATHSAVES},
 		{ "MRF_UNDOALWAYS",			MORPH_UNDOALWAYS },
+		{ "MRF_TRANSFERTRANSLATION", MORPH_TRANSFERTRANSLATION },
 		{ NULL, 0 }
 	};
 
diff --git a/wadsrc/static/actors/actor.txt b/wadsrc/static/actors/actor.txt
index 8c35df21b..77250b3df 100644
--- a/wadsrc/static/actors/actor.txt
+++ b/wadsrc/static/actors/actor.txt
@@ -330,6 +330,7 @@ ACTOR Actor native //: Thinker
 	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);
+	action native bool A_CopySpriteFrame(int from, int to, int flags = 0);
 
 	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);
diff --git a/wadsrc/static/actors/constants.txt b/wadsrc/static/actors/constants.txt
index 05049e598..76bdcf9eb 100644
--- a/wadsrc/static/actors/constants.txt
+++ b/wadsrc/static/actors/constants.txt
@@ -164,6 +164,7 @@ const int MRF_UNDOBYDEATH = 512;
 const int MRF_UNDOBYDEATHFORCED = 1024;
 const int MRF_UNDOBYDEATHSAVES = 2048;
 const int MRF_UNDOALWAYS = 4096;
+const int MRF_TRANSFERTRANSLATION = 8192;
 
 // Flags for A_RailAttack and A_CustomRailgun
 const int RGF_SILENT = 1;
@@ -171,6 +172,7 @@ const int RGF_NOPIERCING = 2;
 const int RGF_EXPLICITANGLE = 4;
 const int RGF_FULLBRIGHT = 8;
 const int RGF_CENTERZ = 16;
+const int RGF_NORANDOMPUFFZ = 32;
 
 // Flags for A_Mushroom
 const int MSF_Standard = 0;
@@ -466,6 +468,7 @@ enum
 	DMSS_EXFILTER =			0x00000040,
 	DMSS_EXSPECIES =		0x00000080,
 	DMSS_EITHER =			0x00000100,
+	DMSS_INFLICTORDMGTYPE =	0x00000200,
 };
 
 // Flags for A_AlertMonsters
@@ -663,4 +666,11 @@ enum
 {
 	GAF_RELATIVE =			1,
 	GAF_SWITCH =			1 << 1,
+};
+
+//Flags for A_CopySpriteFrame
+enum
+{
+	CPSF_NOSPRITE =			1,
+	CPSF_NOFRAME =			1 << 1,
 };
\ No newline at end of file