added per-sector sky UDMF properties.

(Hardware rendering only, the SW renderer is not in a state where this is easily done.)

specs/udmf_zdoom.txt

@@ -365,6 +365,11 @@ Note: All <bool> fields default to false unless mentioned otherwise.
 	  friction = <float>;             // sets the sector's friction factor. Must be between 0 and 1.
 	  movefactor = <float>            // sets the sector's movement acceleration factor. Must be > 0.
 	  
+	  skyfloor = <string>             // defines lower sky for this sector.
+	  skyceiling = <string>           // defines upper sky for this sector.
+	  skyfloor2 = <string>             // defines secondary lower sky for this sector. (for lightning or transparent layers)
+	  skyceiling2 = <string>           // defines secondary upper sky for this sector.
+	  
 	  colormap = <string>;            // only provided for backwards compatibility. Do not use in GZDoom projects.
 
       * Note about dropactors

src/gamedata/r_defs.h

@@ -667,6 +667,7 @@ struct sector_t
 		float GlowHeight;
 		FTextureID Texture;
 		TextureManipulation TextureFx;
+		FTextureID skytexture[2];
 	};
 
 
@@ -690,7 +691,7 @@ struct sector_t
 
 	int		special;					// map-defined sector special type
 
-	int			sky;						// MBF sky transfer info.
+	int			skytransfer;						// MBF sky transfer info.
 	int 		validcount;					// if == validcount, already checked
 
 	uint32_t selfmap, bottommap, midmap, topmap;		// killough 4/4/98: dynamic colormaps
@@ -826,7 +827,6 @@ public:
 	int CheckSpriteGlow(int lightlevel, const DVector3 &pos);
 	bool GetWallGlow(float *topglowcolor, float *bottomglowcolor);
 
-
 	void SetXOffset(int pos, double o)
 	{
 		planes[pos].xform.xOffs = o;

src/maploader/maploader.h

@@ -197,7 +197,6 @@ private:
 	void CreateScroller(EScroll type, double dx, double dy, sector_t *sect, side_t* side, int accel, EScrollPos scrollpos = EScrollPos::scw_all, int scrollmode = 15/*SCROLL_All*/);
 	void SpawnScrollers();
 	void SpawnFriction();
-	void SpawnUDMFFriction(double friction_factor, double move_factor, sector_t* sec);
 	void SpawnPushers();
 	AActor *GetPushThing (int s);
 	void SpawnPortal(line_t *line, int sectortag, int plane, int bytealpha, int linked);

src/maploader/specials.cpp

@@ -609,7 +609,7 @@ void MapLoader::InitSectorSpecial(sector_t *sector, int special)
 		break;
 
 	case Sky2:
-		sector->sky = PL_SKYFLAT;
+		sector->skytransfer = PL_SKYFLAT;
 		break;
 
 	default:
@@ -872,7 +872,7 @@ void MapLoader::SpawnSpecials ()
 				{
 					auto itr = Level->GetSectorTagIterator(line.args[0]);
 					while ((s = itr.Next()) >= 0)
-						Level->sectors[s].sky = (line.Index() + 1) | PL_SKYFLAT;
+						Level->sectors[s].skytransfer = (line.Index() + 1) | PL_SKYFLAT;
 					break;
 				}
 			}

src/maploader/udmf.cpp

@@ -2124,6 +2124,22 @@ public:
 					movefactor = CheckFloat(key);
 					break;
 
+				case NAME_skyfloor:
+					sec->planes[sector_t::floor].skytexture[0] = TexMan.CheckForTexture(CheckString(key), ETextureType::Wall, FTextureManager::TEXMAN_TryAny | FTextureManager::TEXMAN_ReturnFirst);
+					break;
+
+				case NAME_skyfloor2:
+					sec->planes[sector_t::floor].skytexture[1] = TexMan.CheckForTexture(CheckString(key), ETextureType::Wall, FTextureManager::TEXMAN_TryAny | FTextureManager::TEXMAN_ReturnFirst);
+					break;
+
+				case NAME_skyceiling:
+					sec->planes[sector_t::ceiling].skytexture[0] = TexMan.CheckForTexture(CheckString(key), ETextureType::Wall, FTextureManager::TEXMAN_TryAny | FTextureManager::TEXMAN_ReturnFirst);
+					break;
+
+				case NAME_skyceiling2:
+					sec->planes[sector_t::ceiling].skytexture[1] = TexMan.CheckForTexture(CheckString(key), ETextureType::Wall, FTextureManager::TEXMAN_TryAny | FTextureManager::TEXMAN_ReturnFirst);
+					break;
+
 					// These two are used by Eternity for something I do not understand.
 				//case NAME_portal_ceil_useglobaltex:
 				//case NAME_portal_floor_useglobaltex:

src/namedef_custom.h

@@ -886,6 +886,8 @@ xx(thrustlocation)
 xx(colormap)
 xx(skyfloor)
 xx(skyceiling)
+xx(skyfloor2)
+xx(skyceiling2)
 xx(frictionfactor)
 xx(movefactor)
 

src/p_saveg.cpp

@@ -308,7 +308,7 @@ FSerializer &Serialize(FSerializer &arc, const char *key, sector_t &p, sector_t
 			("damageinterval", p.damageinterval, def->damageinterval)
 			("leakydamage", p.leakydamage, def->leakydamage)
 			("damagetype", p.damagetype, def->damagetype)
-			("sky", p.sky, def->sky)
+			("sky", p.skytransfer, def->skytransfer)
 			("moreflags", p.MoreFlags, def->MoreFlags)
 			("flags", p.Flags, def->Flags)
 			.Array("portals", p.Portals, def->Portals, 2, true)

src/p_setup.cpp

@@ -186,6 +186,10 @@ static void PrecacheLevel(FLevelLocals *Level)
 	{
 		AddToList(hitlist.Data(), Level->sectors[i].GetTexture(sector_t::floor), FTextureManager::HIT_Flat);
 		AddToList(hitlist.Data(), Level->sectors[i].GetTexture(sector_t::ceiling), FTextureManager::HIT_Flat);
+		AddToList(hitlist.Data(), Level->sectors[i].planes[0].skytexture[0], FTextureManager::HIT_Wall);
+		AddToList(hitlist.Data(), Level->sectors[i].planes[0].skytexture[1], FTextureManager::HIT_Wall);
+		AddToList(hitlist.Data(), Level->sectors[i].planes[1].skytexture[0], FTextureManager::HIT_Wall);
+		AddToList(hitlist.Data(), Level->sectors[i].planes[1].skytexture[1], FTextureManager::HIT_Wall);
 	}
 
 	for (i = Level->sides.Size() - 1; i >= 0; i--)

src/playsim/p_sectors.cpp

@@ -1637,3 +1637,4 @@ void vertex_t::RecalcVertexHeights()
 	if (numheights <= 2) numheights = 0;	// is not in need of any special attention
 	dirty = false;
 }
+

src/rendering/hwrenderer/scene/hw_portal.cpp

@@ -1029,7 +1029,7 @@ void HWEEHorizonPortal::DrawContents(HWDrawInfo *di, FRenderState &state)
 		sector->GetTexture(sector_t::ceiling) == skyflatnum)
 	{
 		HWSkyInfo skyinfo;
-		skyinfo.init(di, sector->sky, 0);
+		skyinfo.init(di, sector, sector_t::ceiling, sector->skytransfer, 0);
 		HWSkyPortal sky(screen->mSkyData, mState, &skyinfo, true);
 		sky.DrawContents(di, state);
 	}

src/rendering/hwrenderer/scene/hw_portal.h

@@ -30,7 +30,7 @@ struct HWSkyInfo
 	{
 		return !!memcmp(this, &inf, sizeof(*this));
 	}
-	void init(HWDrawInfo *di, int sky1, PalEntry fadecolor);
+	void init(HWDrawInfo *di, sector_t* sec, int skypos, int sky1, PalEntry fadecolor);
 };
 
 struct HWHorizonInfo

src/rendering/hwrenderer/scene/hw_sky.cpp

@@ -37,13 +37,26 @@
 
 CVAR(Bool,gl_noskyboxes, false, 0)
 
+//===========================================================================
+//
+// 
+//
+//===========================================================================
+
+FTextureID GetSkyTexture(sector_t* sec, int plane, int second)
+{
+	auto tex = sec->planes[plane].skytexture[second];
+	if (tex.isValid()) return tex;
+	return second ? sec->Level->skytexture2 : sec->Level->skytexture1;
+}
+
 //==========================================================================
 //
 //  Set up the skyinfo struct
 //
 //==========================================================================
 
-void HWSkyInfo::init(HWDrawInfo *di, int sky1, PalEntry FadeColor)
+void HWSkyInfo::init(HWDrawInfo *di, sector_t* sec, int skypos, int sky1, PalEntry FadeColor)
 {
 	memset(this, 0, sizeof(*this));
 	if ((sky1 & PL_SKYFLAT) && (sky1 & (PL_SKYFLAT - 1)))
@@ -73,25 +86,27 @@ void HWSkyInfo::init(HWDrawInfo *di, int sky1, PalEntry FadeColor)
 	else
 	{
 	normalsky:
+		auto skytex1 = GetSkyTexture(sec, skypos, false);
+		auto skytex2 = GetSkyTexture(sec, skypos, true);
 		if (di->Level->flags&LEVEL_DOUBLESKY)
 		{
-			auto tex1 = TexMan.GetGameTexture(di->Level->skytexture1, true);
+			auto tex1 = TexMan.GetGameTexture(skytex1);
 			texture[1] = tex1;
 			x_offset[1] = di->Level->hw_sky1pos;
 			doublesky = true;
 		}
 
 		if ((di->Level->flags&LEVEL_SWAPSKIES || (sky1 == PL_SKYFLAT) || (di->Level->flags&LEVEL_DOUBLESKY)) &&
-			di->Level->skytexture2 != di->Level->skytexture1)	// If both skies are equal use the scroll offset of the first!
+			skytex2 != skytex1)	// If both skies are equal use the scroll offset of the first!
 		{
-			texture[0] = TexMan.GetGameTexture(di->Level->skytexture2, true);
-			skytexno1 = di->Level->skytexture2;
+			texture[0] = TexMan.GetGameTexture(skytex2, true);
+			skytexno1 = skytex2;
 			sky2 = true;
 			x_offset[0] = di->Level->hw_sky2pos;
 		}
 		else if (!doublesky)
 		{
-			texture[0] = TexMan.GetGameTexture(di->Level->skytexture1, true);
+			texture[0] = TexMan.GetGameTexture(skytex1, true);
 			skytexno1 = di->Level->skytexture1;
 			x_offset[0] = di->Level->hw_sky1pos;
 		}
@@ -125,7 +140,7 @@ void HWWall::SkyPlane(HWWallDispatcher *di, sector_t *sector, int plane, bool al
 		if (di->di)
 		{
 			HWSkyInfo skyinfo;
-			skyinfo.init(di->di, sector->sky, Colormap.FadeColor);
+			skyinfo.init(di->di, sector, plane, sector->skytransfer, Colormap.FadeColor);
 			ptype = PORTALTYPE_SKY;
 			sky = &skyinfo;
 		}
@@ -199,7 +214,7 @@ void HWWall::SkyLine(HWWallDispatcher *di, sector_t *fs, line_t *line)
 	}
 	else
 	{
-		if (di->di) skyinfo.init(di->di, fs->sky, Colormap.FadeColor);
+		if (di->di) skyinfo.init(di->di, fs, sector_t::ceiling, fs->skytransfer, Colormap.FadeColor);
 		ptype = PORTALTYPE_SKY;
 		sky = &skyinfo;
 	}

src/rendering/swrenderer/scene/r_opaque_pass.cpp

@@ -555,7 +555,7 @@ namespace swrenderer
 				frontsector->GetAlpha(sector_t::ceiling),
 				!!(frontsector->GetFlags(sector_t::ceiling) & PLANEF_ADDITIVE),
 				frontsector->planes[sector_t::ceiling].xform,
-				frontsector->sky,
+				frontsector->skytransfer,
 				portal,
 				basecolormap,
 				Fake3DOpaque::Normal,
@@ -595,7 +595,7 @@ namespace swrenderer
 				frontsector->GetAlpha(sector_t::floor),
 				!!(frontsector->GetFlags(sector_t::floor) & PLANEF_ADDITIVE),
 				frontsector->planes[sector_t::floor].xform,
-				frontsector->sky,
+				frontsector->skytransfer,
 				portal,
 				basecolormap,
 				Fake3DOpaque::Normal,
@@ -732,7 +732,7 @@ namespace swrenderer
 						tempsec.GetAlpha(sector_t::floor),
 						!!(clip3d->fakeFloor->fakeFloor->flags & FF_ADDITIVETRANS),
 						tempsec.planes[position].xform,
-						tempsec.sky,
+						tempsec.skytransfer,
 						nullptr,
 						basecolormap,
 						Fake3DOpaque::FakeFloor,
@@ -800,7 +800,7 @@ namespace swrenderer
 						tempsec.GetAlpha(sector_t::ceiling),
 						!!(clip3d->fakeFloor->fakeFloor->flags & FF_ADDITIVETRANS),
 						tempsec.planes[position].xform,
-						tempsec.sky,
+						tempsec.skytransfer,
 						nullptr,
 						basecolormap,
 						Fake3DOpaque::FakeCeiling,

src/scripting/vmthunks.cpp

@@ -2861,7 +2861,7 @@ DEFINE_FIELD_X(Sector, sector_t, SoundTarget)
 DEFINE_FIELD_X(Sector, sector_t, special)
 DEFINE_FIELD_X(Sector, sector_t, lightlevel)
 DEFINE_FIELD_X(Sector, sector_t, seqType)
-DEFINE_FIELD_X(Sector, sector_t, sky)
+DEFINE_FIELD_NAMED_X(Sector, sector_t, skytransfer, sky)
 DEFINE_FIELD_X(Sector, sector_t, SeqName)
 DEFINE_FIELD_X(Sector, sector_t, centerspot)
 DEFINE_FIELD_X(Sector, sector_t, validcount)