Dynamic number of models per frame instead of a hard limit of four. (#1298)

* Changed model-related arrays to TArrays.

* Update models.cpp

Used TArray.Alloc to make TArrays have the correct size depending on the number of models. 
surfaceSkinIDs was two-dimensional and is now a one-dimensional TArray as well, it's size is now (models * MD3_MAX_SURFACES)
surfaceSkinIDs was two-dimensional and is now a one-dimensional TArray as well, elements are accessed via [Row + Column * NumRows], in this case sSurfaceIndex + modelIndex * MD3_MAX_SURFACES]

* Edited skinSurfaceIDs access for one-dimensional TArray

* Edited skinSurfaceIDs access for one-dimensional TArray

* Edited skinSurfaceIDs access for one-dimensional TArray

* Changed model-related arrays to TArrays.

Also removed MAX_MODELS_PER_FRAME.

* Used TArray.Alloc to make TArrays have the correct size depending on the number of models. 

surfaceSkinIDs was two-dimensional and is now a one-dimensional TArray as well, elements are accessed via [Row + Column * NumRows], in this case surfaceIndex + modelIndex * MD3_MAX_SURFACES]

* Used TArray.Alloc to make TArrays have the correct size depending on the number of models. 

surfaceSkinIDs was two-dimensional and is now a one-dimensional TArray as well, elements are accessed via [Row + Column * NumRows], in this case surfaceIndex + modelIndex * MD3_MAX_SURFACES]

* Update models.h

* Edited MAX_MODELS_MD3

* Update models_obj.cpp

src/common/models/model.h

@@ -15,15 +15,15 @@ void FlushModels();
 extern TDeletingArray<FModel*> Models;
 extern TArray<FSpriteModelFrame> SpriteModelFrames;
 
-#define MAX_MODELS_PER_FRAME 4
 #define MD3_MAX_SURFACES	32
 
 struct FSpriteModelFrame
 {
-	int modelIDs[MAX_MODELS_PER_FRAME];
+	uint8_t modelsAmount = 0;
-	FTextureID skinIDs[MAX_MODELS_PER_FRAME];
+	TArray<int> modelIDs;
-	FTextureID surfaceskinIDs[MAX_MODELS_PER_FRAME][MD3_MAX_SURFACES];
+	TArray<FTextureID> skinIDs;
-	int modelframes[MAX_MODELS_PER_FRAME];
+	TArray<FTextureID> surfaceskinIDs;
+	TArray<int> modelframes;
 	float xscale, yscale, zscale;
 	// [BB] Added zoffset, rotation parameters and flags.
 	// Added xoffset, yoffset

src/common/models/models_md3.cpp

@@ -306,9 +306,10 @@ void FMD3Model::AddSkins(uint8_t *hitlist)
 {
 	for (unsigned i = 0; i < Surfaces.Size(); i++)
 	{
-		if (curSpriteMDLFrame->surfaceskinIDs[curMDLIndex][i].isValid())
+		int ssIndex = i + curMDLIndex * MD3_MAX_SURFACES;
+		if (curSpriteMDLFrame->surfaceskinIDs[ssIndex].isValid())
 		{
-			hitlist[curSpriteMDLFrame->surfaceskinIDs[curMDLIndex][i].GetIndex()] |= FTextureManager::HIT_Flat;
+			hitlist[curSpriteMDLFrame->surfaceskinIDs[ssIndex].GetIndex()] |= FTextureManager::HIT_Flat;
 		}
 
 		MD3Surface * surf = &Surfaces[i];
@@ -357,9 +358,10 @@ void FMD3Model::RenderFrame(FModelRenderer *renderer, FGameTexture * skin, int f
 		FGameTexture *surfaceSkin = skin;
 		if (!surfaceSkin)
 		{
-			if (curSpriteMDLFrame->surfaceskinIDs[curMDLIndex][i].isValid())
+			int ssIndex = i + curMDLIndex * MD3_MAX_SURFACES;
+			if (curSpriteMDLFrame->surfaceskinIDs[ssIndex].isValid())
 			{
-				surfaceSkin = TexMan.GetGameTexture(curSpriteMDLFrame->surfaceskinIDs[curMDLIndex][i], true);
+				surfaceSkin = TexMan.GetGameTexture(curSpriteMDLFrame->surfaceskinIDs[ssIndex], true);
 			}
 			else if (surf->numSkins > 0 && surf->Skins[0].isValid())
 			{

src/common/models/models_obj.cpp

@@ -638,9 +638,10 @@ void FOBJModel::RenderFrame(FModelRenderer *renderer, FGameTexture * skin, int f
 		FGameTexture *userSkin = skin;
 		if (!userSkin)
 		{
-			if (i < MD3_MAX_SURFACES && curSpriteMDLFrame->surfaceskinIDs[curMDLIndex][i].isValid())
+			int ssIndex = i + curMDLIndex * MD3_MAX_SURFACES;
+			if (i < MD3_MAX_SURFACES && curSpriteMDLFrame->surfaceskinIDs[ssIndex].isValid())
 			{
-				userSkin = TexMan.GetGameTexture(curSpriteMDLFrame->surfaceskinIDs[curMDLIndex][i], true);
+				userSkin = TexMan.GetGameTexture(curSpriteMDLFrame->surfaceskinIDs[ssIndex], true);
 			}
 			else if (surf->skin.isValid())
 			{
@@ -669,13 +670,14 @@ void FOBJModel::AddSkins(uint8_t* hitlist)
 {
 	for (size_t i = 0; i < surfaces.Size(); i++)
 	{
-		if (i < MD3_MAX_SURFACES && curSpriteMDLFrame->surfaceskinIDs[curMDLIndex][i].isValid())
+		size_t ssIndex = i + curMDLIndex * MD3_MAX_SURFACES;
+		if (i < MD3_MAX_SURFACES && curSpriteMDLFrame->surfaceskinIDs[ssIndex].isValid())
 		{
 			// Precache skins manually reassigned by the user.
 			// On OBJs with lots of skins, such as Doom map OBJs exported from GZDB,
 			// there may be too many skins for the user to manually change, unless
 			// the limit is bumped or surfaceskinIDs is changed to a TArray<FTextureID>.
-			hitlist[curSpriteMDLFrame->surfaceskinIDs[curMDLIndex][i].GetIndex()] |= FTextureManager::HIT_Flat;
+			hitlist[curSpriteMDLFrame->surfaceskinIDs[ssIndex].GetIndex()] |= FTextureManager::HIT_Flat;
 			return; // No need to precache skin that was replaced
 		}
 

src/common/models/models_ue1.cpp

@@ -242,8 +242,9 @@ void FUE1Model::RenderFrame( FModelRenderer *renderer, FGameTexture *skin, int f
 		FGameTexture *sskin = skin;
 		if ( !sskin )
 		{
-			if ( curSpriteMDLFrame->surfaceskinIDs[curMDLIndex][groups[i].texNum].isValid() )
+			int ssIndex = groups[i].texNum + curMDLIndex * MD3_MAX_SURFACES;
-				sskin = TexMan.GetGameTexture(curSpriteMDLFrame->surfaceskinIDs[curMDLIndex][groups[i].texNum], true);
+			if (curSpriteMDLFrame->surfaceskinIDs[ssIndex].isValid())
+				sskin = TexMan.GetGameTexture(curSpriteMDLFrame->surfaceskinIDs[ssIndex], true);
 			if ( !sskin )
 			{
 				vofs += vsize;
@@ -303,8 +304,12 @@ void FUE1Model::BuildVertexBuffer( FModelRenderer *renderer )
 void FUE1Model::AddSkins( uint8_t *hitlist )
 {
 	for (int i = 0; i < numGroups; i++)
-		if ( curSpriteMDLFrame->surfaceskinIDs[curMDLIndex][groups[i].texNum].isValid() )
+	{
-			hitlist[curSpriteMDLFrame->surfaceskinIDs[curMDLIndex][groups[i].texNum].GetIndex()] |= FTextureManager::HIT_Flat;
+		int ssIndex = groups[i].texNum + curMDLIndex * MD3_MAX_SURFACES;
+		if (curSpriteMDLFrame->surfaceskinIDs[ssIndex].isValid())
+			hitlist[curSpriteMDLFrame->surfaceskinIDs[ssIndex].GetIndex()] |= FTextureManager::HIT_Flat;
+	}
+		
 }
 
 FUE1Model::~FUE1Model()

src/r_data/models.cpp

@@ -267,8 +267,7 @@ void RenderFrameModels(FModelRenderer *renderer, FLevelLocals *Level, const FSpr
 			}
 		}
 	}
-
+	for (int i = 0; i < smf->modelsAmount; i++)
-	for (int i = 0; i<MAX_MODELS_PER_FRAME; i++)
 	{
 		if (smf->modelIDs[i] != -1)
 		{
@@ -317,9 +316,17 @@ void InitModels()
 		FSpriteModelFrame smf;
 		memset(&smf, 0, sizeof(smf));
 		smf.isVoxel = true;
-		smf.modelIDs[1] = smf.modelIDs[2] = smf.modelIDs[3] = -1;
+
+		smf.modelsAmount = 1;
+		smf.modelframes.Alloc(1);
+		smf.modelframes[0] = -1;
+
+		smf.modelIDs.Alloc(1);
 		smf.modelIDs[0] = VoxelDefs[i]->Voxel->VoxelIndex;
+
+		smf.skinIDs.Alloc(1);
 		smf.skinIDs[0] = md->GetPaletteTexture();
+
 		smf.xscale = smf.yscale = smf.zscale = VoxelDefs[i]->Scale;
 		smf.angleoffset = VoxelDefs[i]->AngleOffset.Degrees;
 		if (VoxelDefs[i]->PlacedSpin != 0)
@@ -345,6 +352,7 @@ void InitModels()
 			}
 			SpriteModelFrames.Push(smf);
 		}
+		
 	}
 
 	int Lump;
@@ -370,6 +378,7 @@ void InitModels()
 static void ParseModelDefLump(int Lump)
 {
 	FScanner sc(Lump);
+
 	while (sc.GetString())
 	{
 		if (sc.Compare("model"))
@@ -380,7 +389,6 @@ static void ParseModelDefLump(int Lump)
 
 			FSpriteModelFrame smf;
 			memset(&smf, 0, sizeof(smf));
-			smf.modelIDs[0] = smf.modelIDs[1] = smf.modelIDs[2] = smf.modelIDs[3] = -1;
 			smf.xscale=smf.yscale=smf.zscale=1.f;
 
 			auto type = PClass::FindClass(sc.String);
@@ -389,6 +397,32 @@ static void ParseModelDefLump(int Lump)
 				sc.ScriptError("MODELDEF: Unknown actor type '%s'\n", sc.String);
 			}
 			smf.type = type;
+
+		
+			FScanner::SavedPos scPos = sc.SavePos();
+
+			sc.MustGetStringName("{");
+			while (!sc.CheckString("}"))
+			{
+				sc.MustGetString();
+				if (sc.Compare("model"))
+				{
+					sc.MustGetNumber();
+					index = sc.Number;
+					if (index < 0)
+					{
+						sc.ScriptError("Too many models in %s", type->TypeName.GetChars());
+					}
+					smf.modelsAmount = index + 1;
+				}
+			}
+			smf.modelIDs.Alloc(smf.modelsAmount);
+			smf.skinIDs.Alloc(smf.modelsAmount);
+			smf.surfaceskinIDs.Alloc(smf.modelsAmount * MD3_MAX_SURFACES);
+			smf.modelframes.Alloc(smf.modelsAmount);
+
+			sc.RestorePos(scPos);
+
 			sc.MustGetStringName("{");
 			while (!sc.CheckString("}"))
 			{
@@ -404,17 +438,19 @@ static void ParseModelDefLump(int Lump)
 				{
 					sc.MustGetNumber();
 					index = sc.Number;
-					if (index < 0 || index >= MAX_MODELS_PER_FRAME)
+					if (index < 0 || index >= smf.modelsAmount)
 					{
 						sc.ScriptError("Too many models in %s", type->TypeName.GetChars());
 					}
 					sc.MustGetString();
 					FixPathSeperator(sc.String);
+					
 					smf.modelIDs[index] = FindModel(path.GetChars(), sc.String);
 					if (smf.modelIDs[index] == -1)
 					{
 						Printf("%s: model not found in %s\n", sc.String, path.GetChars());
 					}
+					
 				}
 				else if (sc.Compare("scale"))
 				{
@@ -529,7 +565,7 @@ static void ParseModelDefLump(int Lump)
 				{
 					sc.MustGetNumber();
 					index=sc.Number;
-					if (index<0 || index>=MAX_MODELS_PER_FRAME)
+					if (index<0 || index>= smf.modelsAmount)
 					{
 						sc.ScriptError("Too many models in %s", type->TypeName.GetChars());
 					}
@@ -556,7 +592,7 @@ static void ParseModelDefLump(int Lump)
 					sc.MustGetNumber();
 					surface = sc.Number;
 
-					if (index<0 || index >= MAX_MODELS_PER_FRAME)
+					if (index<0 || index >= smf.modelsAmount)
 					{
 						sc.ScriptError("Too many models in %s", type->TypeName.GetChars());
 					}
@@ -568,14 +604,15 @@ static void ParseModelDefLump(int Lump)
 
 					sc.MustGetString();
 					FixPathSeperator(sc.String);
+					int ssIndex = surface + index * MD3_MAX_SURFACES;
 					if (sc.Compare(""))
 					{
-						smf.surfaceskinIDs[index][surface] = FNullTextureID();
+						smf.surfaceskinIDs[ssIndex] = FNullTextureID();
 					}
 					else
 					{
-						smf.surfaceskinIDs[index][surface] = LoadSkin(path.GetChars(), sc.String);
+						smf.surfaceskinIDs[ssIndex] = LoadSkin(path.GetChars(), sc.String);
-						if (!smf.surfaceskinIDs[index][surface].isValid())
+						if (!smf.surfaceskinIDs[ssIndex].isValid())
 						{
 							Printf("Surface Skin '%s' not found in '%s'\n",
 								sc.String, type->TypeName.GetChars());
@@ -610,7 +647,7 @@ static void ParseModelDefLump(int Lump)
 
 					sc.MustGetNumber();
 					index=sc.Number;
-					if (index<0 || index>=MAX_MODELS_PER_FRAME)
+					if (index<0 || index>= smf.modelsAmount)
 					{
 						sc.ScriptError("Too many models in %s", type->TypeName.GetChars());
 					}

src/rendering/hwrenderer/hw_precache.cpp

@@ -162,7 +162,7 @@ void hw_PrecacheTexture(uint8_t *texhitlist, TMap<PClassActor*, bool> &actorhitl
 			FSpriteModelFrame * smf = FindModelFrame(cls, state.sprite, state.Frame, false);
 			if (smf != NULL)
 			{
-				for (int i = 0; i < MAX_MODELS_PER_FRAME; i++)
+				for (int i = 0; i < smf->modelsAmount; i++)
 				{
 					if (smf->skinIDs[i].isValid())
 					{