Days Gone support (has minor issues)

Author: gildor2

Unreal/GameDatabase.cpp

@@ -359,6 +359,9 @@ const GameInfo GListOfGames[] = {
 #	if GEARS4
 		G("Gears of War 4", gears4, GAME_Gears4),
 #	endif
+#	if DAYSGONE
+		G("Days Gone", daysgone, GAME_DaysGone),
+#	endif
 #	if ARK
 		G("Ark: Survival Evolved", ark, GAME_Ark),
 #	endif
@@ -908,6 +911,9 @@ static const UEVersionMap ueVersions[] =
 	// is defined as GAME_UE4(13), but we're defining package version 4.14.
 	G(GAME_Lawbreakers, VER_UE4_14)
 	#endif
+	#if DAYSGONE
+	G(GAME_DaysGone, 499)					// 500 = VER_UE4_INNER_ARRAY_TAG_INFO, but it's not here
+	#endif
 #endif // UNREAL4
 #if ENDWAR
 	G(GAME_EndWar, 224)

Unreal/GameDefines.h

@@ -150,6 +150,7 @@
 #if UNREAL4
 
 #define GEARS4			1		// Gears of War 4
+#define DAYSGONE		1		// Days Gone
 #define TEKKEN7			1		// Tekken 7
 #define LAWBREAKERS		1		// Lawbreakers
 #define SOD2			1		// State of Decay 2

Unreal/UnAnim4.cpp

@@ -54,6 +54,15 @@ FArchive& operator<<(FArchive& Ar, FReferenceSkeleton& S)
 	if (Ar.ArVer >= VER_UE4_REFERENCE_SKELETON_REFACTOR)
 		Ar << S.NameToIndexMap;
 
+#if DAYSGONE
+	if (Ar.Game == GAME_DaysGone)
+	{
+		// Additional per-bone attribute
+		TArray<FVector> unk;
+		Ar << unk;
+	}
+#endif // DAYSGONE
+
 	int NumBones = S.RefBoneInfo.Num();
 	if (Ar.ArVer < VER_UE4_FIXUP_ROOTBONE_PARENT && NumBones > 0 && S.RefBoneInfo[0].ParentIndex != INDEX_NONE)
 		S.RefBoneInfo[0].ParentIndex = INDEX_NONE;

Unreal/UnCore.h

@@ -420,6 +420,7 @@ enum EGame
 		GAME_HIT = GAME_UE4(8)+1,
 		// 4.11
 		GAME_Gears4 = GAME_UE4(11)+1,
+		GAME_DaysGone = GAME_UE4(11)+2,
 		// 4.13
 		GAME_Lawbreakers = GAME_UE4(13)+1,
 		GAME_StateOfDecay2 = GAME_UE4(13)+2,

Unreal/UnMaterial3.h

@@ -86,6 +86,11 @@ enum ETextureCompressionSettings
 	TC_NormalmapBC5,
 	TC_OneBitMonochrome,
 	TC_SimpleLightmapModification,
+
+#if DAYSGONE
+	TC_BendDefault,
+	TC_BendNormalmap,
+#endif
 };
 
 _ENUM(ETextureCompressionSettings)
@@ -109,6 +114,11 @@ _ENUM(ETextureCompressionSettings)
 	_E(TC_NormalmapBC5),
 	_E(TC_OneBitMonochrome),
 	_E(TC_SimpleLightmapModification),
+
+#if DAYSGONE
+	_E(TC_BendDefault),
+	_E(TC_BendNormalmap),
+#endif
 };
 
 struct FTextureSource

Unreal/UnMesh4.cpp

@@ -73,6 +73,23 @@ struct FColorVertexBuffer4
 	}
 };
 
+#if DAYSGONE
+
+struct FDGPackedVector
+{
+	FVectorFixed48 V;
+	uint16 Pad;
+
+	friend FArchive& operator<<(FArchive& Ar, FDGPackedVector& PV)
+	{
+		return Ar << PV.V << PV.Pad;
+	}
+};
+
+SIMPLE_TYPE(FDGPackedVector, uint16);
+
+#endif // DAYSGONE
+
 struct FPositionVertexBuffer4
 {
 	TArray<FVector>	Verts;
@@ -85,6 +102,36 @@ struct FPositionVertexBuffer4
 
 		Ar << S.Stride << S.NumVertices;
 		DBG_MESH("PositionStream: IS:%d NV:%d\n", S.Stride, S.NumVertices);
+
+#if DAYSGONE
+		if (Ar.Game == GAME_DaysGone)
+		{
+			// This happens only for StaticMesh
+			if (S.Stride == 8)
+			{
+				TArray<FDGPackedVector> PackedVerts;
+				PackedVerts.BulkSerialize(Ar);
+				S.Verts.AddUninitialized(PackedVerts.Num());
+				for (int i = 0; i < PackedVerts.Num(); i++)
+				{
+					S.Verts[i] = PackedVerts[i].V;
+				}
+				//todo: should use some bounds to unpack positions, almost works but a bit distorted data
+				return Ar;
+			}
+			else if (S.Stride == 4)
+			{
+				TArray<uint32> PackedVerts;
+				// No idea which format is used here
+				PackedVerts.BulkSerialize(Ar);
+				//todo: should use some bounds to unpack positions; position is 32-bit, with full use of all bits
+				return Ar;
+			}
+			// else - use standard format
+			assert(S.Stride == 12);
+		}
+#endif // DAYSGONE
+
 		S.Verts.BulkSerialize(Ar);
 		return Ar;
 
@@ -504,6 +551,14 @@ struct FSkeletalMaterial
 
 		Ar << M.Material;
 
+#if DAYSGONE
+		if (Ar.Game == GAME_DaysGone)
+		{
+			int32 unk1;
+			Ar << unk1;
+		}
+#endif // DAYSGONE
+
 		if (FEditorObjectVersion::Get(Ar) >= FEditorObjectVersion::RefactorMeshEditorMaterials)
 		{
 			Ar << M.MaterialSlotName;
@@ -1217,6 +1272,15 @@ struct FStaticLODModel4
 
 				if (Ar.ArVer >= VER_UE4_APEX_CLOTH && Lod.HasClothData())
 					Ar << Lod.ClothVertexBuffer;
+
+#if DAYSGONE
+				if (Ar.Game == GAME_DaysGone)
+				{
+					FMultisizeIndexContainer unk1;
+					int32 unk2, unk3, unk4;
+					Ar << unk1 << unk2 << unk3 << unk4;
+				}
+#endif // DAYSGONE
 			}
 		}
 
@@ -2267,6 +2331,14 @@ void UStaticMesh4::Serialize(FArchive &Ar)
 	// serialize FStaticMeshRenderData
 	if (bCooked)
 	{
+#if DAYSGONE
+		if (Ar.Game == GAME_DaysGone)
+		{
+			int32 unk;
+			Ar << unk;
+		}
+#endif // DAYSGONE
+
 		// Note: code below still contains 'if (bCooked)' switches, this is because the same
 		// code could be used to read data from DDC, for non-cooked assets.
 		DBG_STAT("Serializing RenderData\n");

Unreal/UnPackage.cpp

@@ -1647,8 +1647,8 @@ void UnPackage::LoadNameTable()
 	#if UNREAL4
 			if (Game >= GAME_UE4_BASE)
 			{
-		#if GEARS4
-				if (Game == GAME_Gears4) goto name_hashes;
+		#if GEARS4 || DAYSGONE
+				if (Game == GAME_Gears4 || Game == GAME_DaysGone) goto name_hashes;
 		#endif
 				if (ArVer >= VER_UE4_NAME_HASHES_SERIALIZED)
 				{