Fixed merge conflicts.

src/p_pspr.cpp

@@ -113,12 +113,14 @@ END_POINTERS
 DPSprite::DPSprite(player_t *owner, AActor *caller, int id)
 :	x(.0), y(.0),
 	oldx(.0), oldy(.0),
+	alpha(1.),
 	firstTic(true),
 	Flags(0),
 	Caller(caller),
 	Owner(owner),
 	ID(id),
-  processPending(true)
+	processPending(true),
+	RenderStyle(STYLE_Normal)
 {
 	DPSprite *prev = nullptr;
 	DPSprite *next = Owner->psprites;
@@ -967,7 +969,7 @@ void A_OverlayOffset(AActor *self, int layer, double wx, double wy, int flags)
 	player_t *player = self->player;
 	DPSprite *psp;
 
-	if (player && (player->playerstate != PST_DEAD))
+	if (player)
 	{
 		psp = player->FindPSprite(layer);
 
@@ -1051,22 +1053,80 @@ DEFINE_ACTION_FUNCTION(AActor, A_OverlayFlags)
 
 //---------------------------------------------------------------------------
 //
-// PROC OverlayID
+// PROC A_OverlayAlpha
-// Because non-action functions cannot acquire the ID of the overlay...
+//
 //---------------------------------------------------------------------------
 
-DEFINE_ACTION_FUNCTION(AActor, OverlayID)
+DEFINE_ACTION_FUNCTION(AActor, A_OverlayAlpha)
 {
 	PARAM_ACTION_PROLOGUE;
+	PARAM_INT(layer);
+	PARAM_FLOAT(alphaset);
 
-	if (ACTION_CALL_FROM_PSPRITE())
+	if (self->player == nullptr)
-	{
+		return 0;
-		ACTION_RETURN_INT(stateinfo->mPSPIndex);
+
-	}
+	DPSprite *pspr = self->player->FindPSprite(layer);
-	ACTION_RETURN_INT(0);
+
+	if (pspr == nullptr)
+		return 0;
+
+	pspr->alpha = clamp<double>(alphaset, 0.0, 1.0);
+
+	return 0;
 }
 
+// NON-ACTION function to get the overlay alpha of a layer.
+DEFINE_ACTION_FUNCTION(AActor, OverlayAlpha)
+{
+	if (numret > 0)
+	{
+		assert(ret != nullptr);
+		PARAM_SELF_PROLOGUE(AActor);
+		PARAM_INT(layer);
 
+		if (self->player == nullptr)
+			return 0;
+
+		DPSprite *pspr = self->player->FindPSprite(layer);
+
+		if (pspr == nullptr)
+		{
+			ret->SetFloat(0.0);
+		}
+		else
+		{
+			ret->SetFloat(pspr->alpha);
+		}
+		return 1;
+	}
+	return 0;
+}
+
+//---------------------------------------------------------------------------
+//
+// PROC A_OverlayRenderStyle
+//
+//---------------------------------------------------------------------------
+
+DEFINE_ACTION_FUNCTION(AActor, A_OverlayRenderStyle)
+{
+	PARAM_ACTION_PROLOGUE;
+	PARAM_INT(layer);
+	PARAM_INT(style);
+
+	if (self->player == nullptr)
+		return 0;
+
+	DPSprite *pspr = self->player->FindPSprite(layer);
+
+	if (pspr == nullptr || style >= STYLE_Count)
+		return 0;
+
+	pspr->RenderStyle = style;
+
+	return 0;
+}
 
 //---------------------------------------------------------------------------
 //
@@ -1483,7 +1543,8 @@ void DPSprite::Serialize(FSerializer &arc)
 		("x", x)
 		("y", y)
 		("oldx", oldx)
-		("oldy", oldy);
+		("oldy", oldy)
+		("alpha", alpha);
 }
 
 //------------------------------------------------------------------------

src/p_pspr.h

@@ -57,6 +57,9 @@ enum PSPFlags
 	PSPF_ADDBOB			= 1 << 1,
 	PSPF_POWDOUBLE		= 1 << 2,
 	PSPF_CVARFAST		= 1 << 3,
+	PSPF_ALPHA			= 1 << 4,
+	PSPF_RENDERSTYLE	= 1 << 5,
+	PSPF_FLIP			= 1 << 6,
 };
 
 class DPSprite : public DObject
@@ -77,11 +80,12 @@ public:
 	AActor*		GetCaller()	      { return Caller; }
 	void		SetCaller(AActor *newcaller) { Caller = newcaller; }
 
-	double x, y;
+	double x, y, alpha;
 	double oldx, oldy;
 	bool firstTic;
 	int Tics;
 	int Flags;
+	int RenderStyle;
 
 private:
 	DPSprite () {}

src/r_things.cpp

@@ -1290,7 +1290,7 @@ void R_AddSprites (sector_t *sec, int lightlevel, int fakeside)
 //
 // R_DrawPSprite
 //
-void R_DrawPSprite(DPSprite *pspr, AActor *owner, float bobx, float boby, double wx, double wy, double ticfrac)
+void R_DrawPSprite(DPSprite *pspr, AActor *owner, float bobx, float boby, double wx, double wy, double ticfrac, double alpha)
 {
 	double 				tx;
 	int 				x1;
@@ -1326,7 +1326,7 @@ void R_DrawPSprite(DPSprite *pspr, AActor *owner, float bobx, float boby, double
 	flip = sprframe->Flip & 1;
 	tex = TexMan(picnum);
 
-	if (tex->UseType == FTexture::TEX_Null)
+	if (tex->UseType == FTexture::TEX_Null || pspr->RenderStyle == STYLE_None)
 		return;
 
 	if (pspr->firstTic)
@@ -1404,7 +1404,9 @@ void R_DrawPSprite(DPSprite *pspr, AActor *owner, float bobx, float boby, double
 	vis->pic = tex;
 	vis->ColormapNum = 0;
 
-	if (flip)
+	// If flip is used, provided that it's not already flipped (that would just invert itself)
+	// (It's an XOR...)
+	if (!(flip) != !(pspr->Flags & PSPF_FLIP))
 	{
 		vis->xiscale = -FLOAT2FIXED(pspritexiscale * tex->Scale.X);
 		vis->startfrac = (tex->GetWidth() << FRACBITS) - 1;
@@ -1422,8 +1424,26 @@ void R_DrawPSprite(DPSprite *pspr, AActor *owner, float bobx, float boby, double
 	FDynamicColormap *colormap_to_use = nullptr;
 	if (pspr->GetID() < PSP_TARGETCENTER)
 	{
-		vis->Style.Alpha = float(owner->Alpha);
+		// Set the alpha based on if using the overlay's own or not.
+		vis->Style.Alpha = (pspr->Flags & PSPF_ALPHA) ? float(alpha) : float(owner->Alpha);		
+
+		// Set the render style 
+		if (pspr->Flags & PSPF_RENDERSTYLE)
+		{
+			const int rs = clamp<int>(pspr->RenderStyle, 0, STYLE_Count);
+			
+			if (rs == STYLE_Normal && vis->Style.Alpha < 1.0)
+				vis->Style.RenderStyle = LegacyRenderStyles[STYLE_Translucent];
+			else
+				vis->Style.RenderStyle = LegacyRenderStyles[rs];
+		}
+ 		else
+ 		{
+			if (owner->RenderStyle == LegacyRenderStyles[STYLE_Normal] && vis->Style.Alpha < 1.0)
+				vis->Style.RenderStyle = LegacyRenderStyles[STYLE_Translucent];
+			else
 				vis->Style.RenderStyle = owner->RenderStyle;
+ 		}
 
 		// The software renderer cannot invert the source without inverting the overlay
 		// too. That means if the source is inverted, we need to do the reverse of what
@@ -1657,9 +1677,10 @@ void R_DrawPlayerSprites ()
 			// It's possible this psprite's caller is now null but the layer itself hasn't been destroyed
 			// because it didn't tick yet (if we typed 'take all' while in the console for example).
 			// In this case let's simply not draw it to avoid crashing.
+
 			if ((psp->GetID() != PSP_TARGETCENTER || CrosshairImage == nullptr) && psp->GetCaller() != nullptr)
 			{
-				R_DrawPSprite(psp, camera, bobx, boby, wx, wy, r_TicFracF);
+				R_DrawPSprite(psp, camera, bobx, boby, wx, wy, r_TicFracF, psp->alpha);
 			}
 
 			psp = psp->GetNext();

wadsrc/static/actors/actor.txt

@@ -59,6 +59,9 @@ ACTOR Actor native //: Thinker
 	native int GetMissileDamage(int mask, int add, int ptr = AAPTR_DEFAULT);
 	action native int OverlayID();
 
+	// Overlay Functions
+	native float OverlayAlpha(int layer);
+
 	// Action functions
 	// Meh, MBF redundant functions. Only for DeHackEd support.
 	action native A_Turn(float angle = 0);
@@ -340,7 +343,6 @@ 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);
 	action native bool A_CopySpriteFrame(int from, int to, int flags = 0);
 	action native bool A_SetSpriteAngle(float angle = 0, int ptr = AAPTR_DEFAULT);
 	action native bool A_SetSpriteRotation(float angle = 0, int ptr = AAPTR_DEFAULT);
@@ -352,9 +354,12 @@ ACTOR Actor native //: Thinker
 	action native A_CopyFriendliness(int ptr_source = AAPTR_MASTER);
 
 	action native bool A_Overlay(int layer, state start = "", bool nooverride = false);
+	action native int A_ClearOverlays(int sstart = 0, int sstop = 0, bool safety = true);
 	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);
+	action native A_OverlayAlpha(int layer, float alphaset);
+	action native A_OverlayRenderStyle(int layer, int style);
 
 	native int ACS_NamedExecute(name script, int mapnum=0, int arg1=0, int arg2=0, int arg3=0);
 	native int ACS_NamedSuspend(name script, int mapnum=0);