Merge pull request #182 from Laupetin/feature/gltf-xmodel-dumping

feat: dump xmodels as gltf/glb

src/Common/Game/T6/T6_Assets.h

@@ -22,6 +22,8 @@ namespace T6
 
     typedef tdef_align(128) float float_align128;
 
+    typedef uint16_t ScriptString;
+
     struct dvar_t;
     struct MenuCell;
     struct cplane_s;
@@ -591,14 +593,22 @@ namespace T6
         int partBits[5];
     };
 
+    enum XModelLodRampType : unsigned char
+    {
+        XMODEL_LOD_RAMP_RIGID = 0x0,
+        XMODEL_LOD_RAMP_SKINNED = 0x1,
+
+        XMODEL_LOD_RAMP_COUNT
+    };
+
     struct XModel
     {
         const char* name;
         unsigned char numBones;
         unsigned char numRootBones;
         unsigned char numsurfs;
-        char lodRampType;
-        uint16_t* boneNames;
+        XModelLodRampType lodRampType;
+        ScriptString* boneNames;
         unsigned char* parentList;
         uint16_t (*quats)[4];
         float (*trans)[4];
@@ -618,7 +628,7 @@ namespace T6
         uint16_t collLod;
         float* himipInvSqRadii;
         int memUsage;
-        int flags;
+        unsigned int flags;
         bool bad;
         PhysPreset* physPreset;
         unsigned char numCollmaps;

src/ObjCommon/Game/T6/Json/JsonXModel.h

@@ -0,0 +1,36 @@
+#pragma once
+
+#include "Game/T6/T6.h"
+
+#include "Json/JsonCommon.h"
+#include "Json/JsonExtension.h"
+#include <memory>
+#include <nlohmann/json.hpp>
+#include <optional>
+#include <string>
+#include <vector>
+
+namespace T6
+{
+    class JsonXModelLod
+    {
+    public:
+        std::string file;
+    };
+
+    NLOHMANN_DEFINE_TYPE_EXTENSION(JsonXModelLod, file);
+
+    class JsonXModel
+    {
+    public:
+        std::vector<JsonXModelLod> lods;
+        unsigned collLod;
+        std::optional<std::string> physPreset;
+        std::optional<std::string> physConstraints;
+        unsigned flags;
+        JsonVec3 lightingOriginOffset;
+        float lightingOriginRange;
+    };
+
+    NLOHMANN_DEFINE_TYPE_EXTENSION(JsonXModel, lods, collLod, physPreset, physConstraints, flags, lightingOriginOffset, lightingOriginRange);
+} // namespace T6

src/ObjCommon/XModel/Gltf/GltfConstants.h

@@ -0,0 +1,27 @@
+#pragma once
+
+#include "Utils/FileUtils.h"
+
+#include <cstdint>
+
+namespace gltf
+{
+    constexpr uint32_t GLTF_MAGIC = FileUtils::MakeMagic32('g', 'l', 'T', 'F');
+    constexpr uint32_t GLTF_VERSION = 2u;
+    constexpr auto GLTF_VERSION_STRING = "2.0";
+
+    constexpr uint32_t CHUNK_MAGIC_JSON = FileUtils::MakeMagic32('J', 'S', 'O', 'N');
+    constexpr uint32_t CHUNK_MAGIC_BIN = FileUtils::MakeMagic32('B', 'I', 'N', '\x00');
+
+    constexpr auto GLTF_LENGTH_OFFSET = 8u;
+    constexpr auto GLTF_JSON_CHUNK_LENGTH_OFFSET = 12u;
+    constexpr auto GLTF_JSON_CHUNK_DATA_OFFSET = 20u;
+
+    constexpr auto GLTF_DATA_URI_PREFIX = "data:application/octet-stream;base64,";
+
+    constexpr auto GLTF_ATTRIBUTE_POSITION = "POSITION";
+    constexpr auto GLTF_ATTRIBUTE_NORMAL = "NORMAL";
+    constexpr auto GLTF_ATTRIBUTE_TEXCOORD_0 = "TEXCOORD_0";
+    constexpr auto GLTF_ATTRIBUTE_JOINTS_0 = "JOINTS_0";
+    constexpr auto GLTF_ATTRIBUTE_WEIGHTS_0 = "WEIGHTS_0";
+} // namespace gltf

src/ObjCommon/XModel/Gltf/JsonGltf.h

@@ -0,0 +1,343 @@
+#pragma once
+
+#include "Json/JsonExtension.h"
+#include <array>
+#include <nlohmann/json.hpp>
+#include <optional>
+#include <string>
+#include <vector>
+
+namespace gltf
+{
+    class JsonAsset
+    {
+    public:
+        std::string version;
+        std::optional<std::string> generator;
+    };
+
+    NLOHMANN_DEFINE_TYPE_EXTENSION(JsonAsset, version, generator);
+
+    class JsonNode
+    {
+    public:
+        std::optional<std::string> name;
+        std::optional<std::array<float, 3>> translation;
+        std::optional<std::array<float, 4>> rotation;
+        std::optional<std::array<float, 3>> scale;
+        std::optional<std::vector<unsigned>> children;
+        std::optional<unsigned> skin;
+        std::optional<unsigned> mesh;
+    };
+
+    NLOHMANN_DEFINE_TYPE_EXTENSION(JsonNode, name, translation, rotation, scale, children, skin, mesh);
+
+    class JsonBuffer
+    {
+    public:
+        unsigned byteLength;
+        std::optional<std::string> uri;
+    };
+
+    NLOHMANN_DEFINE_TYPE_EXTENSION(JsonBuffer, byteLength, uri);
+
+    enum class JsonAccessorComponentType
+    {
+        SIGNED_BYTE = 5120,
+        UNSIGNED_BYTE = 5121,
+        SIGNED_SHORT = 5122,
+        UNSIGNED_SHORT = 5123,
+        UNSIGNED_INT = 5125,
+        FLOAT = 5126
+    };
+
+    NLOHMANN_JSON_SERIALIZE_ENUM(JsonAccessorComponentType,
+                                 {
+                                     {JsonAccessorComponentType::SIGNED_BYTE,    static_cast<unsigned>(JsonAccessorComponentType::SIGNED_BYTE)   },
+                                     {JsonAccessorComponentType::UNSIGNED_BYTE,  static_cast<unsigned>(JsonAccessorComponentType::UNSIGNED_BYTE) },
+                                     {JsonAccessorComponentType::SIGNED_SHORT,   static_cast<unsigned>(JsonAccessorComponentType::SIGNED_SHORT)  },
+                                     {JsonAccessorComponentType::UNSIGNED_SHORT, static_cast<unsigned>(JsonAccessorComponentType::UNSIGNED_SHORT)},
+                                     {JsonAccessorComponentType::UNSIGNED_INT,   static_cast<unsigned>(JsonAccessorComponentType::UNSIGNED_INT)  },
+                                     {JsonAccessorComponentType::FLOAT,          static_cast<unsigned>(JsonAccessorComponentType::FLOAT)         },
+    });
+
+    enum class JsonAccessorType
+    {
+        SCALAR,
+        VEC2,
+        VEC3,
+        VEC4,
+        MAT2,
+        MAT3,
+        MAT4
+    };
+
+    NLOHMANN_JSON_SERIALIZE_ENUM(JsonAccessorType,
+                                 {
+                                     {JsonAccessorType::SCALAR, "SCALAR"},
+                                     {JsonAccessorType::VEC2,   "VEC2"  },
+                                     {JsonAccessorType::VEC3,   "VEC3"  },
+                                     {JsonAccessorType::VEC4,   "VEC4"  },
+                                     {JsonAccessorType::MAT2,   "MAT2"  },
+                                     {JsonAccessorType::MAT3,   "MAT3"  },
+                                     {JsonAccessorType::MAT4,   "MAT4"  },
+    });
+
+    class JsonAccessor
+    {
+    public:
+        std::optional<unsigned> bufferView;
+        std::optional<unsigned> byteOffset;
+        JsonAccessorComponentType componentType;
+        // std::optional<boolean> normalized
+        unsigned count;
+        JsonAccessorType type;
+        std::optional<std::vector<float>> max;
+        std::optional<std::vector<float>> min;
+        // std::optional<JsonAccessorSparse> sparse;
+        // std::optional<std::string> name;
+        // extensions
+        // extras
+    };
+
+    NLOHMANN_DEFINE_TYPE_EXTENSION(JsonAccessor, bufferView, byteOffset, componentType, count, type, min, max);
+
+    enum class JsonBufferViewTarget
+    {
+        ARRAY_BUFFER = 34962,
+        ELEMENT_ARRAY_BUFFER = 34963
+    };
+
+    NLOHMANN_JSON_SERIALIZE_ENUM(JsonBufferViewTarget,
+                                 {
+                                     {JsonBufferViewTarget::ARRAY_BUFFER,         static_cast<unsigned>(JsonBufferViewTarget::ARRAY_BUFFER)        },
+                                     {JsonBufferViewTarget::ELEMENT_ARRAY_BUFFER, static_cast<unsigned>(JsonBufferViewTarget::ELEMENT_ARRAY_BUFFER)},
+    });
+
+    class JsonBufferView
+    {
+    public:
+        unsigned buffer;
+        unsigned byteLength;
+        std::optional<unsigned> byteOffset;
+        std::optional<unsigned> byteStride;
+        std::optional<JsonBufferViewTarget> target;
+    };
+
+    NLOHMANN_DEFINE_TYPE_EXTENSION(JsonBufferView, buffer, byteLength, byteOffset, byteStride, target);
+
+    enum class JsonAnimationChannelTargetPath
+    {
+        TRANSLATION,
+        ROTATION,
+        SCALE,
+        WEIGHTS
+    };
+
+    NLOHMANN_JSON_SERIALIZE_ENUM(JsonAnimationChannelTargetPath,
+                                 {
+                                     {JsonAnimationChannelTargetPath::TRANSLATION, "translation"},
+                                     {JsonAnimationChannelTargetPath::ROTATION,    "rotation"   },
+                                     {JsonAnimationChannelTargetPath::SCALE,       "scale"      },
+                                     {JsonAnimationChannelTargetPath::WEIGHTS,     "weights"    },
+    });
+
+    class JsonAnimationChannelTarget
+    {
+    public:
+        unsigned node;
+        JsonAnimationChannelTargetPath path;
+    };
+
+    NLOHMANN_DEFINE_TYPE_EXTENSION(JsonAnimationChannelTarget, node, path);
+
+    class JsonAnimationChannel
+    {
+    public:
+        unsigned sampler;
+        JsonAnimationChannelTarget target;
+    };
+
+    NLOHMANN_DEFINE_TYPE_EXTENSION(JsonAnimationChannel, sampler, target);
+
+    enum class JsonAnimationSamplerInterpolation
+    {
+        LINEAR,
+        STEP,
+        CUBIC_SPLINE
+    };
+
+    NLOHMANN_JSON_SERIALIZE_ENUM(JsonAnimationSamplerInterpolation,
+                                 {
+                                     {JsonAnimationSamplerInterpolation::LINEAR,       "LINEAR"     },
+                                     {JsonAnimationSamplerInterpolation::STEP,         "STEP"       },
+                                     {JsonAnimationSamplerInterpolation::CUBIC_SPLINE, "CUBICSPLINE"},
+    });
+
+    class JsonAnimationSampler
+    {
+    public:
+        unsigned input;
+        std::optional<JsonAnimationSamplerInterpolation> interpolation;
+        unsigned output;
+    };
+
+    NLOHMANN_DEFINE_TYPE_EXTENSION(JsonAnimationSampler, input, interpolation, output);
+
+    class JsonAnimation
+    {
+    public:
+        std::vector<JsonAnimationChannel> channels;
+        std::vector<JsonAnimationSampler> samplers;
+        std::optional<std::string> name;
+    };
+
+    NLOHMANN_DEFINE_TYPE_EXTENSION(JsonAnimation, channels, samplers, name);
+
+    class JsonTextureInfo
+    {
+    public:
+        unsigned index;
+    };
+
+    NLOHMANN_DEFINE_TYPE_EXTENSION(JsonTextureInfo, index);
+
+    class JsonPbrMetallicRoughness
+    {
+    public:
+        std::optional<JsonTextureInfo> baseColorTexture;
+        std::optional<float> metallicFactor;
+    };
+
+    NLOHMANN_DEFINE_TYPE_EXTENSION(JsonPbrMetallicRoughness, baseColorTexture, metallicFactor);
+
+    class JsonNormalTextureInfo
+    {
+    public:
+        unsigned index;
+    };
+
+    NLOHMANN_DEFINE_TYPE_EXTENSION(JsonNormalTextureInfo, index);
+
+    class JsonMaterial
+    {
+    public:
+        std::optional<std::string> name;
+        std::optional<JsonPbrMetallicRoughness> pbrMetallicRoughness;
+        std::optional<JsonNormalTextureInfo> normalTexture;
+        std::optional<bool> doubleSided;
+    };
+
+    NLOHMANN_DEFINE_TYPE_EXTENSION(JsonMaterial, name, pbrMetallicRoughness, normalTexture, doubleSided);
+
+    enum class JsonMeshPrimitivesMode
+    {
+        POINTS = 0,
+        LINES = 1,
+        LINE_LOOP = 2,
+        LINE_STRIP = 3,
+        TRIANGLES = 4,
+        TRIANGLES_STRIP = 5,
+        TRIANGLE_FAN = 6
+    };
+
+    NLOHMANN_JSON_SERIALIZE_ENUM(JsonMeshPrimitivesMode,
+                                 {
+                                     {JsonMeshPrimitivesMode::POINTS,          static_cast<unsigned>(JsonMeshPrimitivesMode::POINTS)         },
+                                     {JsonMeshPrimitivesMode::LINES,           static_cast<unsigned>(JsonMeshPrimitivesMode::LINES)          },
+                                     {JsonMeshPrimitivesMode::LINE_LOOP,       static_cast<unsigned>(JsonMeshPrimitivesMode::LINE_LOOP)      },
+                                     {JsonMeshPrimitivesMode::LINE_STRIP,      static_cast<unsigned>(JsonMeshPrimitivesMode::LINE_STRIP)     },
+                                     {JsonMeshPrimitivesMode::TRIANGLES,       static_cast<unsigned>(JsonMeshPrimitivesMode::TRIANGLES)      },
+                                     {JsonMeshPrimitivesMode::TRIANGLES_STRIP, static_cast<unsigned>(JsonMeshPrimitivesMode::TRIANGLES_STRIP)},
+                                     {JsonMeshPrimitivesMode::TRIANGLE_FAN,    static_cast<unsigned>(JsonMeshPrimitivesMode::TRIANGLE_FAN)   },
+    });
+
+    // This should probably be a map, but the supported models do not have arbitrary primitives anyway
+    class JsonMeshPrimitivesAttributes
+    {
+    public:
+        std::optional<unsigned> POSITION;
+        std::optional<unsigned> NORMAL;
+        std::optional<unsigned> TEXCOORD_0;
+        std::optional<unsigned> JOINTS_0;
+        std::optional<unsigned> WEIGHTS_0;
+    };
+
+    NLOHMANN_DEFINE_TYPE_EXTENSION(JsonMeshPrimitivesAttributes, POSITION, NORMAL, TEXCOORD_0, JOINTS_0, WEIGHTS_0);
+
+    class JsonMeshPrimitives
+    {
+    public:
+        JsonMeshPrimitivesAttributes attributes;
+        std::optional<unsigned> indices;
+        std::optional<unsigned> material;
+        std::optional<JsonMeshPrimitivesMode> mode;
+    };
+
+    NLOHMANN_DEFINE_TYPE_EXTENSION(JsonMeshPrimitives, attributes, indices, material, mode);
+
+    class JsonMesh
+    {
+    public:
+        std::vector<JsonMeshPrimitives> primitives;
+        std::optional<std::vector<float>> weights;
+    };
+
+    NLOHMANN_DEFINE_TYPE_EXTENSION(JsonMesh, primitives, weights);
+
+    class JsonSkin
+    {
+    public:
+        std::optional<unsigned> inverseBindMatrices;
+        std::optional<unsigned> skeleton;
+        std::vector<unsigned> joints;
+    };
+
+    NLOHMANN_DEFINE_TYPE_EXTENSION(JsonSkin, inverseBindMatrices, skeleton, joints);
+
+    class JsonScene
+    {
+    public:
+        std::vector<unsigned> nodes;
+        std::optional<std::string> name;
+    };
+
+    NLOHMANN_DEFINE_TYPE_EXTENSION(JsonScene, nodes, name);
+
+    class JsonTexture
+    {
+    public:
+        unsigned source;
+    };
+
+    NLOHMANN_DEFINE_TYPE_EXTENSION(JsonTexture, source);
+
+    class JsonImage
+    {
+    public:
+        std::optional<std::string> uri;
+    };
+
+    NLOHMANN_DEFINE_TYPE_EXTENSION(JsonImage, uri);
+
+    class JsonRoot
+    {
+    public:
+        std::optional<std::vector<JsonAccessor>> accessors;
+        std::optional<std::vector<JsonAnimation>> animations;
+        JsonAsset asset;
+        std::optional<std::vector<JsonBuffer>> buffers;
+        std::optional<std::vector<JsonBufferView>> bufferViews;
+        std::optional<std::vector<JsonImage>> images;
+        std::optional<std::vector<JsonMaterial>> materials;
+        std::optional<std::vector<JsonMesh>> meshes;
+        std::optional<std::vector<JsonNode>> nodes;
+        std::optional<std::vector<JsonSkin>> skins;
+        std::optional<unsigned> scene;
+        std::optional<std::vector<JsonScene>> scenes;
+        std::optional<std::vector<JsonTexture>> textures;
+    };
+
+    NLOHMANN_DEFINE_TYPE_EXTENSION(
+        JsonRoot, accessors, animations, asset, buffers, bufferViews, images, materials, meshes, nodes, skins, scene, scenes, textures);
+} // namespace gltf

src/ObjCommon/XModel/XModelCommon.h

@@ -3,13 +3,8 @@
 #include "Math/Quaternion.h"
 #include "Utils/DistinctMapper.h"
 
-#include <memory>
 #include <string>
-
-struct XModelObject
-{
-    std::string name;
-};
+#include <vector>
 
 struct XModelBone
 {
@@ -30,8 +25,7 @@ struct XModelBoneWeight
 
 struct XModelVertexBoneWeightCollection
 {
-    std::unique_ptr<XModelBoneWeight[]> weights;
-    size_t totalWeightCount;
+    std::vector<XModelBoneWeight> weights;
 };
 
 struct XModelVertexBoneWeights
@@ -51,8 +45,6 @@ struct XModelVertex
 struct XModelFace
 {
     int vertexIndex[3];
-    int objectIndex;
-    int materialIndex;
 };
 
 struct XModelMaterial
@@ -89,10 +81,30 @@ struct XModelMaterial
     float blinn[2];
     float phong;
     std::string colorMapName;
+    std::string normalMapName;
+    std::string specularMapName;
 
     void ApplyDefaults();
 };
 
+struct XModelObject
+{
+    std::string name;
+    int materialIndex;
+    std::vector<XModelFace> m_faces;
+};
+
+struct XModelCommon
+{
+    std::string m_name;
+    std::vector<XModelObject> m_objects;
+    std::vector<XModelBone> m_bones;
+    std::vector<XModelMaterial> m_materials;
+    std::vector<XModelVertex> m_vertices;
+    std::vector<XModelVertexBoneWeights> m_vertex_bone_weights;
+    XModelVertexBoneWeightCollection m_bone_weight_data;
+};
+
 struct VertexMergerPos
 {
     float x;

src/ObjLoading/Game/T6/AssetLoaders/AssetLoaderXModel.cpp

@@ -0,0 +1,44 @@
+#include "AssetLoaderXModel.h"
+
+#include "Game/T6/T6.h"
+#include "Game/T6/XModel/JsonXModelLoader.h"
+#include "Pool/GlobalAssetPool.h"
+
+#include <cstring>
+#include <format>
+#include <iostream>
+
+using namespace T6;
+
+void* AssetLoaderXModel::CreateEmptyAsset(const std::string& assetName, MemoryManager* memory)
+{
+    auto* xmodel = memory->Create<XModel>();
+    memset(xmodel, 0, sizeof(XModel));
+    xmodel->name = memory->Dup(assetName.c_str());
+
+    return xmodel;
+}
+
+bool AssetLoaderXModel::CanLoadFromRaw() const
+{
+    return true;
+}
+
+bool AssetLoaderXModel::LoadFromRaw(
+    const std::string& assetName, ISearchPath* searchPath, MemoryManager* memory, IAssetLoadingManager* manager, Zone* zone) const
+{
+    const auto file = searchPath->Open(std::format("xmodel/{}.json", assetName));
+    if (!file.IsOpen())
+        return false;
+
+    auto* xmodel = memory->Alloc<XModel>();
+    xmodel->name = memory->Dup(assetName.c_str());
+
+    std::vector<XAssetInfoGeneric*> dependencies;
+    if (LoadXModelAsJson(*file.m_stream, *xmodel, memory, manager, dependencies))
+        manager->AddAsset<AssetXModel>(assetName, xmodel, std::move(dependencies));
+    else
+        std::cerr << "Failed to load xmodel \"" << assetName << "\"\n";
+
+    return true;
+}

src/ObjLoading/Game/T6/AssetLoaders/AssetLoaderXModel.h

@@ -0,0 +1,19 @@
+#pragma once
+#include "AssetLoading/BasicAssetLoader.h"
+#include "AssetLoading/IAssetLoadingManager.h"
+#include "Game/T6/T6.h"
+#include "SearchPath/ISearchPath.h"
+
+namespace T6
+{
+    class AssetLoaderXModel final : public BasicAssetLoader<ASSET_TYPE_XMODEL, XModel>
+    {
+        static std::string GetFileNameForAsset(const std::string& assetName);
+
+    public:
+        _NODISCARD void* CreateEmptyAsset(const std::string& assetName, MemoryManager* memory) override;
+        _NODISCARD bool CanLoadFromRaw() const override;
+        bool
+            LoadFromRaw(const std::string& assetName, ISearchPath* searchPath, MemoryManager* memory, IAssetLoadingManager* manager, Zone* zone) const override;
+    };
+} // namespace T6

src/ObjLoading/Game/T6/XModel/JsonXModelLoader.cpp

@@ -0,0 +1,117 @@
+#include "JsonXModelLoader.h"
+
+#include "Game/T6/CommonT6.h"
+#include "Game/T6/Json/JsonXModel.h"
+
+#include <format>
+#include <iostream>
+#include <nlohmann/json.hpp>
+#include <vector>
+
+using namespace nlohmann;
+using namespace T6;
+
+namespace
+{
+    class JsonLoader
+    {
+    public:
+        JsonLoader(std::istream& stream, MemoryManager& memory, IAssetLoadingManager& manager, std::set<XAssetInfoGeneric*>& dependencies)
+            : m_stream(stream),
+              m_memory(memory),
+              m_manager(manager),
+              m_dependencies(dependencies)
+
+        {
+        }
+
+        bool Load(XModel& xmodel) const
+        {
+            const auto jRoot = json::parse(m_stream);
+            std::string type;
+            unsigned version;
+
+            jRoot.at("_type").get_to(type);
+            jRoot.at("_version").get_to(version);
+
+            if (type != "xmodel" || version != 1u)
+            {
+                std::cerr << "Tried to load xmodel \"" << xmodel.name << "\" but did not find expected type material of version 1\n";
+                return false;
+            }
+
+            const auto jXModel = jRoot.get<JsonXModel>();
+            return CreateXModelFromJson(jXModel, xmodel);
+        }
+
+    private:
+        static void PrintError(const XModel& xmodel, const std::string& message)
+        {
+            std::cerr << "Cannot load xmodel \"" << xmodel.name << "\": " << message << "\n";
+        }
+
+        bool CreateXModelFromJson(const JsonXModel& jXModel, XModel& xmodel) const
+        {
+            xmodel.collLod = static_cast<uint16_t>(jXModel.collLod);
+
+            if (jXModel.physPreset)
+            {
+                auto* physPreset = m_manager.LoadDependency<AssetPhysPreset>(jXModel.physPreset.value());
+                if (!physPreset)
+                {
+                    PrintError(xmodel, "Could not find phys preset");
+                    return false;
+                }
+                m_dependencies.emplace(physPreset);
+                xmodel.physPreset = physPreset->Asset();
+            }
+            else
+            {
+                xmodel.physPreset = nullptr;
+            }
+
+            if (jXModel.physConstraints)
+            {
+                auto* physConstraints = m_manager.LoadDependency<AssetPhysConstraints>(jXModel.physConstraints.value());
+                if (!physConstraints)
+                {
+                    PrintError(xmodel, "Could not find phys constraints");
+                    return false;
+                }
+                m_dependencies.emplace(physConstraints);
+                xmodel.physConstraints = physConstraints->Asset();
+            }
+            else
+            {
+                xmodel.physConstraints = nullptr;
+            }
+
+            xmodel.flags = jXModel.flags;
+            xmodel.lightingOriginOffset.x = jXModel.lightingOriginOffset.x;
+            xmodel.lightingOriginOffset.y = jXModel.lightingOriginOffset.y;
+            xmodel.lightingOriginOffset.z = jXModel.lightingOriginOffset.z;
+            xmodel.lightingOriginRange = jXModel.lightingOriginRange;
+
+            return true;
+        }
+
+        std::istream& m_stream;
+        MemoryManager& m_memory;
+        IAssetLoadingManager& m_manager;
+        std::set<XAssetInfoGeneric*>& m_dependencies;
+    };
+} // namespace
+
+namespace T6
+{
+    bool LoadXModelAsJson(
+        std::istream& stream, XModel& xmodel, MemoryManager* memory, IAssetLoadingManager* manager, std::vector<XAssetInfoGeneric*>& dependencies)
+    {
+        std::set<XAssetInfoGeneric*> dependenciesSet;
+        const JsonLoader loader(stream, *memory, *manager, dependenciesSet);
+
+        dependencies.assign(dependenciesSet.cbegin(), dependenciesSet.cend());
+
+        return loader.Load(xmodel);
+    }
+} // namespace T6

src/ObjLoading/Game/T6/XModel/JsonXModelLoader.h

@@ -0,0 +1,13 @@
+#pragma once
+
+#include "AssetLoading/IAssetLoadingManager.h"
+#include "Game/T6/T6.h"
+#include "Utils/MemoryManager.h"
+
+#include <istream>
+
+namespace T6
+{
+    bool LoadXModelAsJson(
+        std::istream& stream, XModel& xmodel, MemoryManager* memory, IAssetLoadingManager* manager, std::vector<XAssetInfoGeneric*>& dependencies);
+} // namespace T6

src/ObjWriting.lua

@@ -19,6 +19,7 @@ function ObjWriting:link(links)
 	links:linkto(ZoneCommon)
 	links:linkto(minilzo)
 	links:linkto(minizip)
+	links:linkto(libtomcrypt)
 end
 
 function ObjWriting:use()
@@ -55,5 +56,6 @@ function ObjWriting:project()
 		minilzo:include(includes)
 		minizip:include(includes)
 		json:include(includes)
+		libtomcrypt:include(includes)
 
 end

src/ObjWriting/Game/IW3/AssetDumpers/AssetDumperXModel.h

@@ -2,37 +2,11 @@
 
 #include "Dumping/AbstractAssetDumper.h"
 #include "Game/IW3/IW3.h"
-#include "Model/Obj/ObjWriter.h"
-#include "Model/XModel/AbstractXModelWriter.h"
-#include "Utils/DistinctMapper.h"
 
 namespace IW3
 {
     class AssetDumperXModel final : public AbstractAssetDumper<XModel>
     {
-        static GfxImage* GetMaterialColorMap(const Material* material);
-        static GfxImage* GetMaterialNormalMap(const Material* material);
-        static GfxImage* GetMaterialSpecularMap(const Material* material);
-
-        static void AddObjMaterials(ObjWriter& writer, DistinctMapper<Material*>& materialMapper, const XModel* model);
-        static void AddObjObjects(ObjWriter& writer, const DistinctMapper<Material*>& materialMapper, const XModel* model, unsigned lod);
-        static void AddObjVertices(ObjWriter& writer, const XModel* model, unsigned lod);
-        static void AddObjFaces(ObjWriter& writer, const XModel* model, unsigned lod);
-        static void DumpObjLod(AssetDumpingContext& context, XAssetInfo<XModel>* asset, unsigned lod);
-        static void DumpObjMat(const AssetDumpingContext& context, XAssetInfo<XModel>* asset);
-        static void DumpObj(AssetDumpingContext& context, XAssetInfo<XModel>* asset);
-
-        static void AddXModelBones(const AssetDumpingContext& context, AbstractXModelWriter& writer, const XModel* model);
-        static void AddXModelMaterials(AbstractXModelWriter& writer, DistinctMapper<Material*>& materialMapper, const XModel* model);
-        static void AddXModelObjects(AbstractXModelWriter& writer, const XModel* model, unsigned lod);
-        static void AddXModelVertices(AbstractXModelWriter& writer, const XModel* model, unsigned lod);
-        static void AllocateXModelBoneWeights(const XModel* model, unsigned lod, XModelVertexBoneWeightCollection& weightCollection);
-        static void
-            AddXModelVertexBoneWeights(AbstractXModelWriter& writer, const XModel* model, unsigned lod, XModelVertexBoneWeightCollection& weightCollection);
-        static void AddXModelFaces(AbstractXModelWriter& writer, const DistinctMapper<Material*>& materialMapper, const XModel* model, unsigned lod);
-        static void DumpXModelExportLod(const AssetDumpingContext& context, XAssetInfo<XModel>* asset, unsigned lod);
-        static void DumpXModelExport(const AssetDumpingContext& context, XAssetInfo<XModel>* asset);
-
     protected:
         bool ShouldDump(XAssetInfo<XModel>* asset) override;
         void DumpAsset(AssetDumpingContext& context, XAssetInfo<XModel>* asset) override;

src/ObjWriting/Game/IW4/AssetDumpers/AssetDumperXModel.h

@@ -2,37 +2,11 @@
 
 #include "Dumping/AbstractAssetDumper.h"
 #include "Game/IW4/IW4.h"
-#include "Model/Obj/ObjWriter.h"
-#include "Model/XModel/AbstractXModelWriter.h"
-#include "Utils/DistinctMapper.h"
 
 namespace IW4
 {
     class AssetDumperXModel final : public AbstractAssetDumper<XModel>
     {
-        static GfxImage* GetMaterialColorMap(const Material* material);
-        static GfxImage* GetMaterialNormalMap(const Material* material);
-        static GfxImage* GetMaterialSpecularMap(const Material* material);
-
-        static void AddObjMaterials(ObjWriter& writer, DistinctMapper<Material*>& materialMapper, const XModel* model);
-        static void AddObjObjects(ObjWriter& writer, const DistinctMapper<Material*>& materialMapper, const XModelSurfs* modelSurfs, int baseSurfaceIndex);
-        static void AddObjVertices(ObjWriter& writer, const XModelSurfs* modelSurfs);
-        static void AddObjFaces(ObjWriter& writer, const XModelSurfs* modelSurfs);
-        static void DumpObjLod(const AssetDumpingContext& context, XAssetInfo<XModel>* asset, const unsigned lod);
-        static void DumpObjMat(const AssetDumpingContext& context, XAssetInfo<XModel>* asset);
-        static void DumpObj(AssetDumpingContext& context, XAssetInfo<XModel>* asset);
-
-        static void AddXModelBones(const AssetDumpingContext& context, AbstractXModelWriter& writer, const XModel* model);
-        static void AddXModelMaterials(AbstractXModelWriter& writer, DistinctMapper<Material*>& materialMapper, const XModel* model);
-        static void AddXModelObjects(AbstractXModelWriter& writer, const XModelSurfs* modelSurfs);
-        static void AddXModelVertices(AbstractXModelWriter& writer, const XModelSurfs* modelSurfs);
-        static void AllocateXModelBoneWeights(const XModelSurfs* modelSurfs, XModelVertexBoneWeightCollection& weightCollection);
-        static void AddXModelVertexBoneWeights(AbstractXModelWriter& writer, const XModelSurfs* modelSurfs, XModelVertexBoneWeightCollection& weightCollection);
-        static void
-            AddXModelFaces(AbstractXModelWriter& writer, const DistinctMapper<Material*>& materialMapper, const XModelSurfs* modelSurfs, int baseSurfaceIndex);
-        static void DumpXModelExportLod(const AssetDumpingContext& context, XAssetInfo<XModel>* asset, unsigned lod);
-        static void DumpXModelExport(AssetDumpingContext& context, XAssetInfo<XModel>* asset);
-
     protected:
         bool ShouldDump(XAssetInfo<XModel>* asset) override;
         void DumpAsset(AssetDumpingContext& context, XAssetInfo<XModel>* asset) override;

src/ObjWriting/Game/IW5/AssetDumpers/AssetDumperXModel.h

@@ -2,37 +2,11 @@
 
 #include "Dumping/AbstractAssetDumper.h"
 #include "Game/IW5/IW5.h"
-#include "Model/Obj/ObjWriter.h"
-#include "Model/XModel/AbstractXModelWriter.h"
-#include "Utils/DistinctMapper.h"
 
 namespace IW5
 {
     class AssetDumperXModel final : public AbstractAssetDumper<XModel>
     {
-        static GfxImage* GetMaterialColorMap(const Material* material);
-        static GfxImage* GetMaterialNormalMap(const Material* material);
-        static GfxImage* GetMaterialSpecularMap(const Material* material);
-
-        static void AddObjMaterials(ObjWriter& writer, DistinctMapper<Material*>& materialMapper, const XModel* model);
-        static void AddObjObjects(ObjWriter& writer, const DistinctMapper<Material*>& materialMapper, const XModelSurfs* modelSurfs, int baseSurfaceIndex);
-        static void AddObjVertices(ObjWriter& writer, const XModelSurfs* modelSurfs);
-        static void AddObjFaces(ObjWriter& writer, const XModelSurfs* modelSurfs);
-        static void DumpObjLod(const AssetDumpingContext& context, XAssetInfo<XModel>* asset, const unsigned lod);
-        static void DumpObjMat(const AssetDumpingContext& context, XAssetInfo<XModel>* asset);
-        static void DumpObj(AssetDumpingContext& context, XAssetInfo<XModel>* asset);
-
-        static void AddXModelBones(const AssetDumpingContext& context, AbstractXModelWriter& writer, const XModel* model);
-        static void AddXModelMaterials(AbstractXModelWriter& writer, DistinctMapper<Material*>& materialMapper, const XModel* model);
-        static void AddXModelObjects(AbstractXModelWriter& writer, const XModelSurfs* modelSurfs);
-        static void AddXModelVertices(AbstractXModelWriter& writer, const XModelSurfs* modelSurfs);
-        static void AllocateXModelBoneWeights(const XModelSurfs* modelSurfs, XModelVertexBoneWeightCollection& weightCollection);
-        static void AddXModelVertexBoneWeights(AbstractXModelWriter& writer, const XModelSurfs* modelSurfs, XModelVertexBoneWeightCollection& weightCollection);
-        static void
-            AddXModelFaces(AbstractXModelWriter& writer, const DistinctMapper<Material*>& materialMapper, const XModelSurfs* modelSurfs, int baseSurfaceIndex);
-        static void DumpXModelExportLod(const AssetDumpingContext& context, XAssetInfo<XModel>* asset, unsigned lod);
-        static void DumpXModelExport(AssetDumpingContext& context, XAssetInfo<XModel>* asset);
-
     protected:
         bool ShouldDump(XAssetInfo<XModel>* asset) override;
         void DumpAsset(AssetDumpingContext& context, XAssetInfo<XModel>* asset) override;

src/ObjWriting/Game/T5/AssetDumpers/AssetDumperXModel.h

@@ -2,37 +2,11 @@
 
 #include "Dumping/AbstractAssetDumper.h"
 #include "Game/T5/T5.h"
-#include "Model/Obj/ObjWriter.h"
-#include "Model/XModel/AbstractXModelWriter.h"
-#include "Utils/DistinctMapper.h"
 
 namespace T5
 {
     class AssetDumperXModel final : public AbstractAssetDumper<XModel>
     {
-        static GfxImage* GetMaterialColorMap(const Material* material);
-        static GfxImage* GetMaterialNormalMap(const Material* material);
-        static GfxImage* GetMaterialSpecularMap(const Material* material);
-
-        static void AddObjMaterials(ObjWriter& writer, DistinctMapper<Material*>& materialMapper, const XModel* model);
-        static void AddObjObjects(ObjWriter& writer, const DistinctMapper<Material*>& materialMapper, const XModel* model, unsigned lod);
-        static void AddObjVertices(ObjWriter& writer, const XModel* model, unsigned lod);
-        static void AddObjFaces(ObjWriter& writer, const XModel* model, unsigned lod);
-        static void DumpObjLod(AssetDumpingContext& context, XAssetInfo<XModel>* asset, unsigned lod);
-        static void DumpObjMat(const AssetDumpingContext& context, XAssetInfo<XModel>* asset);
-        static void DumpObj(AssetDumpingContext& context, XAssetInfo<XModel>* asset);
-
-        static void AddXModelBones(const AssetDumpingContext& context, AbstractXModelWriter& writer, const XModel* model);
-        static void AddXModelMaterials(AbstractXModelWriter& writer, DistinctMapper<Material*>& materialMapper, const XModel* model);
-        static void AddXModelObjects(AbstractXModelWriter& writer, const XModel* model, unsigned lod);
-        static void AddXModelVertices(AbstractXModelWriter& writer, const XModel* model, unsigned lod);
-        static void AllocateXModelBoneWeights(const XModel* model, unsigned lod, XModelVertexBoneWeightCollection& weightCollection);
-        static void
-            AddXModelVertexBoneWeights(AbstractXModelWriter& writer, const XModel* model, unsigned lod, XModelVertexBoneWeightCollection& weightCollection);
-        static void AddXModelFaces(AbstractXModelWriter& writer, const DistinctMapper<Material*>& materialMapper, const XModel* model, unsigned lod);
-        static void DumpXModelExportLod(const AssetDumpingContext& context, XAssetInfo<XModel>* asset, unsigned lod);
-        static void DumpXModelExport(const AssetDumpingContext& context, XAssetInfo<XModel>* asset);
-
     protected:
         bool ShouldDump(XAssetInfo<XModel>* asset) override;
         void DumpAsset(AssetDumpingContext& context, XAssetInfo<XModel>* asset) override;

src/ObjWriting/Game/T6/AssetDumpers/AssetDumperXModel.h

@@ -2,37 +2,11 @@
 
 #include "Dumping/AbstractAssetDumper.h"
 #include "Game/T6/T6.h"
-#include "Model/Obj/ObjWriter.h"
-#include "Model/XModel/AbstractXModelWriter.h"
-#include "Utils/DistinctMapper.h"
 
 namespace T6
 {
     class AssetDumperXModel final : public AbstractAssetDumper<XModel>
     {
-        static GfxImage* GetMaterialColorMap(const Material* material);
-        static GfxImage* GetMaterialNormalMap(const Material* material);
-        static GfxImage* GetMaterialSpecularMap(const Material* material);
-
-        static void AddObjMaterials(ObjWriter& writer, DistinctMapper<Material*>& materialMapper, const XModel* model);
-        static void AddObjObjects(ObjWriter& writer, const DistinctMapper<Material*>& materialMapper, const XModel* model, unsigned lod);
-        static void AddObjVertices(ObjWriter& writer, const XModel* model, unsigned lod);
-        static void AddObjFaces(ObjWriter& writer, const XModel* model, unsigned lod);
-        static void DumpObjLod(AssetDumpingContext& context, XAssetInfo<XModel>* asset, unsigned lod);
-        static void DumpObjMat(const AssetDumpingContext& context, XAssetInfo<XModel>* asset);
-        static void DumpObj(AssetDumpingContext& context, XAssetInfo<XModel>* asset);
-
-        static void AddXModelBones(const AssetDumpingContext& context, AbstractXModelWriter& writer, const XModel* model);
-        static void AddXModelMaterials(AbstractXModelWriter& writer, DistinctMapper<Material*>& materialMapper, const XModel* model);
-        static void AddXModelObjects(AbstractXModelWriter& writer, const XModel* model, unsigned lod);
-        static void AddXModelVertices(AbstractXModelWriter& writer, const XModel* model, unsigned lod);
-        static void AllocateXModelBoneWeights(const XModel* model, unsigned lod, XModelVertexBoneWeightCollection& weightCollection);
-        static void
-            AddXModelVertexBoneWeights(AbstractXModelWriter& writer, const XModel* model, unsigned lod, XModelVertexBoneWeightCollection& weightCollection);
-        static void AddXModelFaces(AbstractXModelWriter& writer, const DistinctMapper<Material*>& materialMapper, const XModel* model, unsigned lod);
-        static void DumpXModelExportLod(const AssetDumpingContext& context, XAssetInfo<XModel>* asset, unsigned lod);
-        static void DumpXModelExport(const AssetDumpingContext& context, XAssetInfo<XModel>* asset);
-
     protected:
         bool ShouldDump(XAssetInfo<XModel>* asset) override;
         void DumpAsset(AssetDumpingContext& context, XAssetInfo<XModel>* asset) override;

src/ObjWriting/Game/T6/XModel/JsonXModelWriter.cpp

@@ -0,0 +1,71 @@
+#include "JsonXModelWriter.h"
+
+#include "Game/T6/CommonT6.h"
+#include "Game/T6/Json/JsonXModel.h"
+
+#include <iomanip>
+#include <nlohmann/json.hpp>
+
+using namespace nlohmann;
+using namespace T6;
+
+namespace
+{
+    class JsonDumper
+    {
+    public:
+        JsonDumper(AssetDumpingContext& context, std::ostream& stream)
+            : m_stream(stream)
+        {
+        }
+
+        void Dump(const XModel* xmodel) const
+        {
+            JsonXModel jsonXModel;
+            CreateJsonXModel(jsonXModel, *xmodel);
+            json jRoot = jsonXModel;
+
+            jRoot["_type"] = "xmodel";
+            jRoot["_version"] = 1;
+
+            m_stream << std::setw(4) << jRoot << "\n";
+        }
+
+    private:
+        static const char* AssetName(const char* input)
+        {
+            if (input && input[0] == ',')
+                return &input[1];
+
+            return input;
+        }
+
+        void CreateJsonXModel(JsonXModel& jXModel, const XModel& xmodel) const
+        {
+            jXModel.collLod = xmodel.collLod;
+
+            if (xmodel.physPreset && xmodel.physPreset->name)
+                jXModel.physPreset = AssetName(xmodel.physPreset->name);
+
+            if (xmodel.physConstraints && xmodel.physConstraints->name)
+                jXModel.physConstraints = AssetName(xmodel.physConstraints->name);
+
+            jXModel.flags = xmodel.flags;
+            jXModel.lightingOriginOffset.x = xmodel.lightingOriginOffset.x;
+            jXModel.lightingOriginOffset.y = xmodel.lightingOriginOffset.y;
+            jXModel.lightingOriginOffset.z = xmodel.lightingOriginOffset.z;
+            jXModel.lightingOriginRange = xmodel.lightingOriginRange;
+        }
+
+        std::ostream& m_stream;
+    };
+} // namespace
+
+namespace T6
+{
+    void DumpXModelAsJson(std::ostream& stream, const XModel* xmodel, AssetDumpingContext& context)
+    {
+        const JsonDumper dumper(context, stream);
+        dumper.Dump(xmodel);
+    }
+} // namespace T6

src/ObjWriting/Game/T6/XModel/JsonXModelWriter.h

@@ -0,0 +1,11 @@
+#pragma once
+
+#include "Dumping/AssetDumpingContext.h"
+#include "Game/T6/T6.h"
+
+#include <ostream>
+
+namespace T6
+{
+    void DumpXModelAsJson(std::ostream& stream, const XModel* xmodel, AssetDumpingContext& context);
+} // namespace T6

src/ObjWriting/Model/Obj/ObjWriter.cpp

@@ -1,157 +0,0 @@
-#include "ObjWriter.h"
-
-#include "Game/IW4/CommonIW4.h"
-
-ObjWriter::ObjWriter(std::string gameName, std::string zoneName)
-    : m_game_name(std::move(gameName)),
-      m_zone_name(std::move(zoneName))
-{
-}
-
-void ObjWriter::AddObject(ObjObject object)
-{
-    m_objects.emplace_back(std::move(object));
-    m_object_data.emplace_back();
-}
-
-void ObjWriter::AddMaterial(MtlMaterial material)
-{
-    m_materials.emplace_back(std::move(material));
-}
-
-void ObjWriter::AddVertex(const int objectId, const ObjVertex vertex)
-{
-    if (objectId < 0 || static_cast<unsigned>(objectId) >= m_object_data.size())
-        return;
-
-    m_object_data[objectId].m_vertices.Add(vertex);
-}
-
-void ObjWriter::AddNormal(const int objectId, const ObjNormal normal)
-{
-    if (objectId < 0 || static_cast<unsigned>(objectId) >= m_object_data.size())
-        return;
-
-    m_object_data[objectId].m_normals.Add(normal);
-}
-
-void ObjWriter::AddUv(const int objectId, const ObjUv uv)
-{
-    if (objectId < 0 || static_cast<unsigned>(objectId) >= m_object_data.size())
-        return;
-
-    m_object_data[objectId].m_uvs.Add(uv);
-}
-
-void ObjWriter::AddFace(const int objectId, const ObjFace face)
-{
-    if (objectId < 0 || static_cast<unsigned>(objectId) >= m_object_data.size())
-        return;
-
-    m_object_data[objectId].m_faces.push_back(face);
-}
-
-void ObjWriter::GetObjObjectDataOffsets(std::vector<ObjObjectDataOffsets>& inputOffsets, std::vector<ObjObjectDataOffsets>& distinctOffsets)
-{
-    ObjObjectDataOffsets currentInputOffsets{};
-    ObjObjectDataOffsets currentDistinctOffsets{};
-
-    for (const auto& objectData : m_object_data)
-    {
-        inputOffsets.push_back(currentInputOffsets);
-        distinctOffsets.push_back(currentDistinctOffsets);
-
-        currentInputOffsets.vertexOffset += objectData.m_vertices.GetInputValueCount();
-        currentInputOffsets.normalOffset += objectData.m_normals.GetInputValueCount();
-        currentInputOffsets.uvOffset += objectData.m_uvs.GetInputValueCount();
-        currentDistinctOffsets.vertexOffset += objectData.m_vertices.GetDistinctValueCount();
-        currentDistinctOffsets.normalOffset += objectData.m_normals.GetDistinctValueCount();
-        currentDistinctOffsets.uvOffset += objectData.m_uvs.GetDistinctValueCount();
-    }
-}
-
-void ObjWriter::WriteObj(std::ostream& stream)
-{
-    WriteObj(stream, std::string());
-}
-
-void ObjWriter::WriteObj(std::ostream& stream, const std::string& mtlName)
-{
-    stream << "# OpenAssetTools OBJ File ( " << m_game_name << ")\n";
-    stream << "# Game Origin: " << m_game_name << "\n";
-    stream << "# Zone Origin: " << m_zone_name << "\n";
-
-    if (!mtlName.empty())
-        stream << "mtllib " << mtlName << "\n";
-
-    std::vector<ObjObjectDataOffsets> inputOffsetsByObject;
-    std::vector<ObjObjectDataOffsets> distinctOffsetsByObject;
-    GetObjObjectDataOffsets(inputOffsetsByObject, distinctOffsetsByObject);
-
-    auto objectIndex = 0;
-    for (const auto& object : m_objects)
-    {
-        const auto& objectData = m_object_data[objectIndex];
-        stream << "o " << object.name << "\n";
-
-        for (const auto& v : objectData.m_vertices.GetDistinctValues())
-            stream << "v " << v.coordinates[0] << " " << v.coordinates[1] << " " << v.coordinates[2] << "\n";
-        for (const auto& uv : objectData.m_uvs.GetDistinctValues())
-            stream << "vt " << uv.uv[0] << " " << uv.uv[1] << "\n";
-        for (const auto& n : objectData.m_normals.GetDistinctValues())
-            stream << "vn " << n.normal[0] << " " << n.normal[1] << " " << n.normal[2] << "\n";
-
-        if (object.materialIndex >= 0 && static_cast<unsigned>(object.materialIndex) < m_materials.size())
-            stream << "usemtl " << m_materials[object.materialIndex].materialName << "\n";
-
-        for (const auto& f : objectData.m_faces)
-        {
-            const size_t v[3]{objectData.m_vertices.GetDistinctPositionByInputPosition(f.vertexIndex[0] - inputOffsetsByObject[objectIndex].vertexOffset)
-                                  + distinctOffsetsByObject[objectIndex].vertexOffset + 1,
-                              objectData.m_vertices.GetDistinctPositionByInputPosition(f.vertexIndex[1] - inputOffsetsByObject[objectIndex].vertexOffset)
-                                  + distinctOffsetsByObject[objectIndex].vertexOffset + 1,
-                              objectData.m_vertices.GetDistinctPositionByInputPosition(f.vertexIndex[2] - inputOffsetsByObject[objectIndex].vertexOffset)
-                                  + distinctOffsetsByObject[objectIndex].vertexOffset + 1};
-            const size_t n[3]{objectData.m_normals.GetDistinctPositionByInputPosition(f.normalIndex[0] - inputOffsetsByObject[objectIndex].normalOffset)
-                                  + distinctOffsetsByObject[objectIndex].normalOffset + 1,
-                              objectData.m_normals.GetDistinctPositionByInputPosition(f.normalIndex[1] - inputOffsetsByObject[objectIndex].normalOffset)
-                                  + distinctOffsetsByObject[objectIndex].normalOffset + 1,
-                              objectData.m_normals.GetDistinctPositionByInputPosition(f.normalIndex[2] - inputOffsetsByObject[objectIndex].normalOffset)
-                                  + distinctOffsetsByObject[objectIndex].normalOffset + 1};
-            const size_t uv[3]{objectData.m_uvs.GetDistinctPositionByInputPosition(f.uvIndex[0] - inputOffsetsByObject[objectIndex].uvOffset)
-                                   + distinctOffsetsByObject[objectIndex].uvOffset + 1,
-                               objectData.m_uvs.GetDistinctPositionByInputPosition(f.uvIndex[1] - inputOffsetsByObject[objectIndex].uvOffset)
-                                   + distinctOffsetsByObject[objectIndex].uvOffset + 1,
-                               objectData.m_uvs.GetDistinctPositionByInputPosition(f.uvIndex[2] - inputOffsetsByObject[objectIndex].uvOffset)
-                                   + distinctOffsetsByObject[objectIndex].uvOffset + 1};
-
-            stream << "f " << v[0] << "/" << uv[0] << "/" << n[0] << " " << v[1] << "/" << uv[1] << "/" << n[1] << " " << v[2] << "/" << uv[2] << "/" << n[2]
-                   << "\n";
-        }
-
-        objectIndex++;
-    }
-}
-
-void ObjWriter::WriteMtl(std::ostream& stream)
-{
-    stream << "# OpenAssetTools MAT File ( " << m_game_name << ")\n";
-    stream << "# Game Origin: " << m_game_name << "\n";
-    stream << "# Zone Origin: " << m_zone_name << "\n";
-    stream << "# Material count: " << m_materials.size() << "\n";
-
-    for (const auto& material : m_materials)
-    {
-        stream << "\n";
-        stream << "newmtl " << material.materialName << "\n";
-
-        if (!material.colorMapName.empty())
-            stream << "map_Kd ../images/" << material.colorMapName << ".dds\n";
-
-        if (!material.normalMapName.empty())
-            stream << "map_bump ../images/" << material.normalMapName << ".dds\n";
-
-        if (!material.specularMapName.empty())
-            stream << "map_Ks ../images/" << material.specularMapName << ".dds\n";
-    }
-}

src/ObjWriting/Model/Obj/ObjWriter.h

@@ -1,48 +0,0 @@
-#pragma once
-
-#include "Model/Obj/ObjCommon.h"
-#include "Utils/DistinctMapper.h"
-
-#include <ostream>
-#include <vector>
-
-class ObjWriter
-{
-protected:
-    struct ObjObjectData
-    {
-        DistinctMapper<ObjVertex> m_vertices;
-        DistinctMapper<ObjNormal> m_normals;
-        DistinctMapper<ObjUv> m_uvs;
-        std::vector<ObjFace> m_faces;
-    };
-
-    struct ObjObjectDataOffsets
-    {
-        size_t vertexOffset;
-        size_t normalOffset;
-        size_t uvOffset;
-    };
-
-    std::string m_game_name;
-    std::string m_zone_name;
-    std::vector<ObjObject> m_objects;
-    std::vector<ObjObjectData> m_object_data;
-    std::vector<MtlMaterial> m_materials;
-
-    void GetObjObjectDataOffsets(std::vector<ObjObjectDataOffsets>& inputOffsets, std::vector<ObjObjectDataOffsets>& distinctOffsets);
-
-public:
-    ObjWriter(std::string gameName, std::string zoneName);
-
-    void AddObject(ObjObject object);
-    void AddMaterial(MtlMaterial material);
-    void AddVertex(int objectId, ObjVertex vertex);
-    void AddNormal(int objectId, ObjNormal normal);
-    void AddUv(int objectId, ObjUv uv);
-    void AddFace(int objectId, ObjFace face);
-
-    void WriteObj(std::ostream& stream);
-    void WriteObj(std::ostream& stream, const std::string& mtlName);
-    void WriteMtl(std::ostream& stream);
-};

src/ObjWriting/Model/XModel/AbstractXModelWriter.cpp

@@ -1,33 +0,0 @@
-#include "AbstractXModelWriter.h"
-
-AbstractXModelWriter::AbstractXModelWriter() = default;
-
-void AbstractXModelWriter::AddObject(XModelObject object)
-{
-    m_objects.emplace_back(std::move(object));
-}
-
-void AbstractXModelWriter::AddBone(XModelBone bone)
-{
-    m_bones.emplace_back(std::move(bone));
-}
-
-void AbstractXModelWriter::AddMaterial(XModelMaterial material)
-{
-    m_materials.emplace_back(std::move(material));
-}
-
-void AbstractXModelWriter::AddVertex(XModelVertex vertex)
-{
-    m_vertices.emplace_back(vertex);
-}
-
-void AbstractXModelWriter::AddVertexBoneWeights(XModelVertexBoneWeights vertexBoneWeights)
-{
-    m_vertex_bone_weights.emplace_back(vertexBoneWeights);
-}
-
-void AbstractXModelWriter::AddFace(XModelFace face)
-{
-    m_faces.emplace_back(face);
-}

src/ObjWriting/Model/XModel/AbstractXModelWriter.h

@@ -1,26 +0,0 @@
-#pragma once
-
-#include "Model/XModel/XModelCommon.h"
-
-#include <vector>
-
-class AbstractXModelWriter
-{
-protected:
-    std::vector<XModelObject> m_objects;
-    std::vector<XModelBone> m_bones;
-    std::vector<XModelMaterial> m_materials;
-    std::vector<XModelVertex> m_vertices;
-    std::vector<XModelVertexBoneWeights> m_vertex_bone_weights;
-    std::vector<XModelFace> m_faces;
-
-public:
-    AbstractXModelWriter();
-
-    void AddObject(XModelObject object);
-    void AddBone(XModelBone bone);
-    void AddMaterial(XModelMaterial material);
-    void AddVertex(XModelVertex vertex);
-    void AddVertexBoneWeights(XModelVertexBoneWeights vertexBoneWeights);
-    void AddFace(XModelFace face);
-};

src/ObjWriting/Model/XModel/XModelExportWriter.cpp

@@ -1,221 +0,0 @@
-#include "XModelExportWriter.h"
-
-#include "Math/Quaternion.h"
-
-#include <iomanip>
-#include <iostream>
-
-class XModelExportWriterBase : public XModelExportWriter
-{
-protected:
-    std::string m_game_name;
-    std::string m_zone_name;
-
-    VertexMerger m_vertex_merger;
-
-    void PrepareVertexMerger()
-    {
-        m_vertex_merger = VertexMerger(m_vertices.size());
-
-        auto vertexOffset = 0u;
-        for (const auto& vertex : m_vertices)
-        {
-            XModelVertexBoneWeights weights{nullptr, 0};
-
-            if (vertexOffset < m_vertex_bone_weights.size())
-                weights = m_vertex_bone_weights[vertexOffset];
-
-            m_vertex_merger.Add(VertexMergerPos{vertex.coordinates[0], vertex.coordinates[1], vertex.coordinates[2], weights.weights, weights.weightCount});
-
-            vertexOffset++;
-        }
-    }
-
-    void WriteHeader(std::ostream& stream, const int version) const
-    {
-        stream << "// OpenAssetTools XMODEL_EXPORT File\n";
-        stream << "// Game Origin: " << m_game_name << "\n";
-        stream << "// Zone Origin: " << m_zone_name << "\n";
-        stream << "MODEL\n";
-        stream << "VERSION " << version << "\n";
-        stream << "\n";
-    }
-
-    void WriteBones(std::ostream& stream) const
-    {
-        stream << "NUMBONES " << m_bones.size() << "\n";
-        size_t boneNum = 0u;
-        for (const auto& bone : m_bones)
-        {
-            stream << "BONE " << boneNum << " ";
-            if (bone.parentIndex < 0)
-                stream << "-1";
-            else
-                stream << bone.parentIndex;
-
-            stream << " \"" << bone.name << "\"\n";
-            boneNum++;
-        }
-        stream << "\n";
-
-        boneNum = 0u;
-        for (const auto& bone : m_bones)
-        {
-            stream << "BONE " << boneNum << "\n";
-            stream << "OFFSET ";
-            stream << std::setprecision(6) << std::fixed << bone.globalOffset[0] << ", " << std::setprecision(6) << std::fixed << bone.globalOffset[1] << ", "
-                   << std::setprecision(6) << std::fixed << bone.globalOffset[2] << "\n";
-
-            stream << "SCALE ";
-            stream << std::setprecision(6) << std::fixed << bone.scale[0] << ", " << std::setprecision(6) << std::fixed << bone.scale[1] << ", "
-                   << std::setprecision(6) << std::fixed << bone.scale[2] << "\n";
-
-            const Matrix32 mat = bone.globalRotation.ToMatrix();
-            stream << "X " << std::setprecision(6) << std::fixed << mat.m_data[0][0] << ", " << std::setprecision(6) << std::fixed << mat.m_data[1][0] << ", "
-                   << std::setprecision(6) << std::fixed << mat.m_data[2][0] << "\n";
-            stream << "Y " << std::setprecision(6) << std::fixed << mat.m_data[0][1] << ", " << std::setprecision(6) << std::fixed << mat.m_data[1][1] << ", "
-                   << std::setprecision(6) << std::fixed << mat.m_data[2][1] << "\n";
-            stream << "Z " << std::setprecision(6) << std::fixed << mat.m_data[0][2] << ", " << std::setprecision(6) << std::fixed << mat.m_data[1][2] << ", "
-                   << std::setprecision(6) << std::fixed << mat.m_data[2][2] << "\n";
-            stream << "\n";
-            boneNum++;
-        }
-    }
-
-    XModelExportWriterBase(std::string gameName, std::string zoneName)
-        : m_game_name(std::move(gameName)),
-          m_zone_name(std::move(zoneName))
-    {
-    }
-};
-
-class XModelExportWriter6 final : public XModelExportWriterBase
-{
-    void WriteVertices(std::ostream& stream) const
-    {
-        const auto& distinctVertexValues = m_vertex_merger.GetDistinctValues();
-        stream << "NUMVERTS " << distinctVertexValues.size() << "\n";
-        size_t vertexNum = 0u;
-        for (const auto& vertexPos : distinctVertexValues)
-        {
-            stream << "VERT " << vertexNum << "\n";
-            stream << "OFFSET ";
-            stream << std::setprecision(6) << std::fixed << vertexPos.x << ", " << std::setprecision(6) << std::fixed << vertexPos.y << ", "
-                   << std::setprecision(6) << std::fixed << vertexPos.z << "\n";
-            stream << "BONES " << vertexPos.weightCount << "\n";
-
-            for (auto weightIndex = 0u; weightIndex < vertexPos.weightCount; weightIndex++)
-            {
-                stream << "BONE " << vertexPos.weights[weightIndex].boneIndex << " " << std::setprecision(6) << std::fixed
-                       << vertexPos.weights[weightIndex].weight << "\n";
-            }
-            stream << "\n";
-            vertexNum++;
-        }
-    }
-
-    static void WriteFaceVertex(std::ostream& stream, const size_t index, const XModelVertex& vertex)
-    {
-        stream << "VERT " << index << "\n";
-        stream << "NORMAL " << std::setprecision(6) << std::fixed << vertex.normal[0] << " " << std::setprecision(6) << std::fixed << vertex.normal[1] << " "
-               << std::setprecision(6) << std::fixed << vertex.normal[2] << "\n";
-        stream << "COLOR " << std::setprecision(6) << std::fixed << vertex.color[0] << " " << std::setprecision(6) << std::fixed << vertex.color[1] << " "
-               << std::setprecision(6) << std::fixed << vertex.color[2] << " " << std::setprecision(6) << std::fixed << vertex.color[3] << "\n";
-        stream << "UV 1 " << std::setprecision(6) << std::fixed << vertex.uv[0] << " " << std::setprecision(6) << std::fixed << vertex.uv[1] << "\n";
-    }
-
-    void WriteFaces(std::ostream& stream) const
-    {
-        stream << "NUMFACES " << m_faces.size() << "\n";
-        for (const auto& face : m_faces)
-        {
-            const size_t distinctPositions[3]{
-                m_vertex_merger.GetDistinctPositionByInputPosition(face.vertexIndex[0]),
-                m_vertex_merger.GetDistinctPositionByInputPosition(face.vertexIndex[1]),
-                m_vertex_merger.GetDistinctPositionByInputPosition(face.vertexIndex[2]),
-            };
-
-            const XModelVertex& v0 = m_vertices[face.vertexIndex[0]];
-            const XModelVertex& v1 = m_vertices[face.vertexIndex[1]];
-            const XModelVertex& v2 = m_vertices[face.vertexIndex[2]];
-
-            stream << "TRI " << face.objectIndex << " " << face.materialIndex << " 0 0\n";
-            WriteFaceVertex(stream, distinctPositions[0], v0);
-            WriteFaceVertex(stream, distinctPositions[1], v1);
-            WriteFaceVertex(stream, distinctPositions[2], v2);
-            stream << "\n";
-        }
-    }
-
-    void WriteObjects(std::ostream& stream) const
-    {
-        stream << "NUMOBJECTS " << m_objects.size() << "\n";
-        size_t objectNum = 0u;
-        for (const auto& object : m_objects)
-        {
-            stream << "OBJECT " << objectNum << " \"" << object.name << "\"\n";
-            objectNum++;
-        }
-        stream << "\n";
-    }
-
-    void WriteMaterials(std::ostream& stream) const
-    {
-        stream << "NUMMATERIALS " << m_materials.size() << "\n";
-        size_t materialNum = 0u;
-        for (const auto& material : m_materials)
-        {
-            const auto colorMapPath = "../images/" + material.colorMapName + ".dds";
-            stream << "MATERIAL " << materialNum << " \"" << material.name << "\" \"" << material.materialTypeName << "\" \"" << colorMapPath << "\"\n";
-            stream << "COLOR " << std::setprecision(6) << std::fixed << material.color[0] << " " << std::setprecision(6) << std::fixed << material.color[1]
-                   << " " << std::setprecision(6) << std::fixed << material.color[2] << " " << std::setprecision(6) << std::fixed << material.color[3] << "\n";
-            stream << "TRANSPARENCY " << std::setprecision(6) << std::fixed << material.transparency[0] << " " << std::setprecision(6) << std::fixed
-                   << material.transparency[1] << " " << std::setprecision(6) << std::fixed << material.transparency[2] << " " << std::setprecision(6)
-                   << std::fixed << material.transparency[3] << "\n";
-            stream << "AMBIENTCOLOR " << std::setprecision(6) << std::fixed << material.ambientColor[0] << " " << std::setprecision(6) << std::fixed
-                   << material.ambientColor[1] << " " << std::setprecision(6) << std::fixed << material.ambientColor[2] << " " << std::setprecision(6)
-                   << std::fixed << material.ambientColor[3] << "\n";
-            stream << "INCANDESCENCE " << std::setprecision(6) << std::fixed << material.incandescence[0] << " " << std::setprecision(6) << std::fixed
-                   << material.incandescence[1] << " " << std::setprecision(6) << std::fixed << material.incandescence[2] << " " << std::setprecision(6)
-                   << std::fixed << material.incandescence[3] << "\n";
-            stream << "COEFFS " << std::setprecision(6) << std::fixed << material.coeffs[0] << " " << std::setprecision(6) << std::fixed << material.coeffs[1]
-                   << "\n";
-            stream << "GLOW " << std::setprecision(6) << std::fixed << material.glow.x << " " << material.glow.y << "\n";
-            stream << "REFRACTIVE " << material.refractive.x << " " << std::setprecision(6) << std::fixed << material.refractive.y << "\n";
-            stream << "SPECULARCOLOR " << std::setprecision(6) << std::fixed << material.specularColor[0] << " " << std::setprecision(6) << std::fixed
-                   << material.specularColor[1] << " " << std::setprecision(6) << std::fixed << material.specularColor[2] << " " << std::setprecision(6)
-                   << std::fixed << material.specularColor[3] << "\n";
-            stream << "REFLECTIVECOLOR " << std::setprecision(6) << std::fixed << material.reflectiveColor[0] << " " << std::setprecision(6) << std::fixed
-                   << material.reflectiveColor[1] << " " << std::setprecision(6) << std::fixed << material.reflectiveColor[2] << " " << std::setprecision(6)
-                   << std::fixed << material.reflectiveColor[3] << "\n";
-            stream << "REFLECTIVE " << material.reflective.x << " " << std::setprecision(6) << std::fixed << material.reflective.y << "\n";
-            stream << "BLINN " << std::setprecision(6) << std::fixed << material.blinn[0] << " " << std::setprecision(6) << std::fixed << material.blinn[1]
-                   << "\n";
-            stream << "PHONG " << std::setprecision(6) << std::fixed << material.phong << "\n";
-            stream << "\n";
-            materialNum++;
-        }
-    }
-
-public:
-    XModelExportWriter6(std::string gameName, std::string zoneName)
-        : XModelExportWriterBase(std::move(gameName), std::move(zoneName))
-    {
-    }
-
-    void Write(std::ostream& stream) override
-    {
-        PrepareVertexMerger();
-        WriteHeader(stream, 6);
-        WriteBones(stream);
-        WriteVertices(stream);
-        WriteFaces(stream);
-        WriteObjects(stream);
-        WriteMaterials(stream);
-    }
-};
-
-std::unique_ptr<XModelExportWriter> XModelExportWriter::CreateWriterForVersion6(std::string gameName, std::string zoneName)
-{
-    return std::make_unique<XModelExportWriter6>(std::move(gameName), std::move(zoneName));
-}

src/ObjWriting/Model/XModel/XModelExportWriter.h

@@ -1,21 +0,0 @@
-#pragma once
-
-#include "AbstractXModelWriter.h"
-
-#include <memory>
-#include <ostream>
-
-class XModelExportWriter : public AbstractXModelWriter
-{
-public:
-    XModelExportWriter() = default;
-    virtual ~XModelExportWriter() = default;
-    XModelExportWriter(const XModelExportWriter& other) = default;
-    XModelExportWriter(XModelExportWriter&& other) noexcept = default;
-    XModelExportWriter& operator=(const XModelExportWriter& other) = default;
-    XModelExportWriter& operator=(XModelExportWriter&& other) noexcept = default;
-
-    virtual void Write(std::ostream& stream) = 0;
-
-    static std::unique_ptr<XModelExportWriter> CreateWriterForVersion6(std::string gameName, std::string zoneName);
-};

src/ObjWriting/ObjWriting.h

@@ -20,14 +20,16 @@ public:
         enum class ModelOutputFormat_e
         {
             XMODEL_EXPORT,
-            OBJ
+            OBJ,
+            GLTF,
+            GLB
         };
 
         bool Verbose = false;
         std::vector<bool> AssetTypesToHandleBitfield;
 
         ImageOutputFormat_e ImageOutputFormat = ImageOutputFormat_e::DDS;
-        ModelOutputFormat_e ModelOutputFormat = ModelOutputFormat_e::XMODEL_EXPORT;
+        ModelOutputFormat_e ModelOutputFormat = ModelOutputFormat_e::GLB;
         bool MenuLegacyMode = false;
 
     } Configuration;

src/ObjWriting/XModel/Export/XModelExportWriter.cpp

@@ -0,0 +1,232 @@
+#include "XModelExportWriter.h"
+
+#include "Math/Quaternion.h"
+
+#include <chrono>
+#include <iomanip>
+#include <iostream>
+
+class XModelExportWriterBase : public XModelWriter
+{
+protected:
+    void PrepareVertexMerger(const XModelCommon& xmodel)
+    {
+        m_vertex_merger = VertexMerger(xmodel.m_vertices.size());
+
+        auto vertexOffset = 0u;
+        for (const auto& vertex : xmodel.m_vertices)
+        {
+            XModelVertexBoneWeights weights{nullptr, 0};
+
+            if (vertexOffset < xmodel.m_vertex_bone_weights.size())
+                weights = xmodel.m_vertex_bone_weights[vertexOffset];
+
+            m_vertex_merger.Add(VertexMergerPos{vertex.coordinates[0], vertex.coordinates[1], vertex.coordinates[2], weights.weights, weights.weightCount});
+
+            vertexOffset++;
+        }
+    }
+
+    void WriteHeader(const int version) const
+    {
+        m_stream << "// OpenAssetTools XMODEL_EXPORT File\n";
+        m_stream << "// Game Origin: " << m_game_name << "\n";
+        m_stream << "// Zone Origin: " << m_zone_name << "\n";
+        m_stream << "MODEL\n";
+        m_stream << "VERSION " << version << "\n";
+        m_stream << "\n";
+    }
+
+    void WriteBones(const XModelCommon& xmodel) const
+    {
+        m_stream << "NUMBONES " << xmodel.m_bones.size() << "\n";
+        size_t boneNum = 0u;
+        for (const auto& bone : xmodel.m_bones)
+        {
+            m_stream << "BONE " << boneNum << " ";
+            if (bone.parentIndex < 0)
+                m_stream << "-1";
+            else
+                m_stream << bone.parentIndex;
+
+            m_stream << " \"" << bone.name << "\"\n";
+            boneNum++;
+        }
+        m_stream << "\n";
+
+        boneNum = 0u;
+        for (const auto& bone : xmodel.m_bones)
+        {
+            m_stream << "BONE " << boneNum << "\n";
+            m_stream << std::format("OFFSET {:.6f}, {:.6f}, {:.6f}\n", bone.globalOffset[0], bone.globalOffset[1], bone.globalOffset[2]);
+            m_stream << std::format("SCALE {:.6f}, {:.6f}, {:.6f}\n", bone.scale[0], bone.scale[1], bone.scale[2]);
+
+            const Matrix32 mat = bone.globalRotation.ToMatrix();
+            m_stream << std::format("X {:.6f}, {:.6f}, {:.6f}\n", mat.m_data[0][0], mat.m_data[1][0], mat.m_data[2][0]);
+            m_stream << std::format("Y {:.6f}, {:.6f}, {:.6f}\n", mat.m_data[0][1], mat.m_data[1][1], mat.m_data[2][1]);
+            m_stream << std::format("Z {:.6f}, {:.6f}, {:.6f}\n", mat.m_data[0][2], mat.m_data[1][2], mat.m_data[2][2]);
+            m_stream << '\n';
+            boneNum++;
+        }
+    }
+
+    XModelExportWriterBase(std::ostream& stream, std::string gameName, std::string zoneName)
+        : m_stream(stream),
+          m_game_name(std::move(gameName)),
+          m_zone_name(std::move(zoneName))
+    {
+    }
+
+    std::ostream& m_stream;
+    std::string m_game_name;
+    std::string m_zone_name;
+    VertexMerger m_vertex_merger;
+};
+
+class XModelExportWriter6 final : public XModelExportWriterBase
+{
+    void WriteVertices(const XModelCommon& xmodel) const
+    {
+        const auto& distinctVertexValues = m_vertex_merger.GetDistinctValues();
+        m_stream << "NUMVERTS " << distinctVertexValues.size() << "\n";
+        size_t vertexNum = 0u;
+        for (const auto& vertexPos : distinctVertexValues)
+        {
+            m_stream << "VERT " << vertexNum << "\n";
+            m_stream << std::format("OFFSET {:.6f}, {:.6f}, {:.6f}\n", vertexPos.x, vertexPos.y, vertexPos.z);
+            m_stream << "BONES " << vertexPos.weightCount << "\n";
+
+            for (auto weightIndex = 0u; weightIndex < vertexPos.weightCount; weightIndex++)
+            {
+                const auto& weight = vertexPos.weights[weightIndex];
+                m_stream << std::format("BONE {} {:.6f}\n", weight.boneIndex, weight.weight);
+            }
+            m_stream << "\n";
+            vertexNum++;
+        }
+    }
+
+    void WriteFaceVertex(const size_t index, const XModelVertex& vertex) const
+    {
+        m_stream << "VERT " << index << "\n";
+        m_stream << std::format("NORMAL {:.6f} {:.6f} {:.6f}\n", vertex.normal[0], vertex.normal[1], vertex.normal[2]);
+        m_stream << std::format("COLOR {:.6f} {:.6f} {:.6f} {:.6f}\n", vertex.color[0], vertex.color[1], vertex.color[2], vertex.color[3]);
+        m_stream << std::format("UV 1 {:.6f} {:.6f}\n", vertex.uv[0], vertex.uv[1]);
+    }
+
+    void WriteFaces(const XModelCommon& xmodel) const
+    {
+        auto totalFaceCount = 0u;
+        for (const auto& object : xmodel.m_objects)
+            totalFaceCount += object.m_faces.size();
+
+        m_stream << "NUMFACES " << totalFaceCount << "\n";
+
+        auto objectIndex = 0u;
+        for (const auto& object : xmodel.m_objects)
+        {
+            for (const auto& face : object.m_faces)
+            {
+                const size_t distinctPositions[3]{
+                    m_vertex_merger.GetDistinctPositionByInputPosition(face.vertexIndex[0]),
+                    m_vertex_merger.GetDistinctPositionByInputPosition(face.vertexIndex[1]),
+                    m_vertex_merger.GetDistinctPositionByInputPosition(face.vertexIndex[2]),
+                };
+
+                const XModelVertex& v0 = xmodel.m_vertices[face.vertexIndex[0]];
+                const XModelVertex& v1 = xmodel.m_vertices[face.vertexIndex[1]];
+                const XModelVertex& v2 = xmodel.m_vertices[face.vertexIndex[2]];
+
+                m_stream << "TRI " << objectIndex << " " << object.materialIndex << " 0 0\n";
+                WriteFaceVertex(distinctPositions[0], v0);
+                WriteFaceVertex(distinctPositions[1], v1);
+                WriteFaceVertex(distinctPositions[2], v2);
+                m_stream << "\n";
+            }
+
+            objectIndex++;
+        }
+    }
+
+    void WriteObjects(const XModelCommon& xmodel) const
+    {
+        m_stream << "NUMOBJECTS " << xmodel.m_objects.size() << "\n";
+        size_t objectNum = 0u;
+        for (const auto& object : xmodel.m_objects)
+        {
+            m_stream << "OBJECT " << objectNum << " \"" << object.name << "\"\n";
+            objectNum++;
+        }
+        m_stream << "\n";
+    }
+
+    void WriteMaterials(const XModelCommon& xmodel) const
+    {
+        m_stream << "NUMMATERIALS " << xmodel.m_materials.size() << "\n";
+        size_t materialNum = 0u;
+        for (const auto& material : xmodel.m_materials)
+        {
+            const auto colorMapPath = "../images/" + material.colorMapName + ".dds";
+            m_stream << "MATERIAL " << materialNum << " \"" << material.name << "\" \"" << material.materialTypeName << "\" \"" << colorMapPath << "\"\n";
+            m_stream << std::format("COLOR {:.6f} {:.6f} {:.6f} {:.6f}\n", material.color[0], material.color[1], material.color[2], material.color[3]);
+            m_stream << std::format("TRANSPARENCY {:.6f} {:.6f} {:.6f} {:.6f}\n",
+                                    material.transparency[0],
+                                    material.transparency[1],
+                                    material.transparency[2],
+                                    material.transparency[3]);
+            m_stream << std::format("AMBIENTCOLOR {:.6f} {:.6f} {:.6f} {:.6f}\n",
+                                    material.ambientColor[0],
+                                    material.ambientColor[1],
+                                    material.ambientColor[2],
+                                    material.ambientColor[3]);
+            m_stream << std::format("INCANDESCENCE {:.6f} {:.6f} {:.6f} {:.6f}\n",
+                                    material.incandescence[0],
+                                    material.incandescence[1],
+                                    material.incandescence[2],
+                                    material.incandescence[3]);
+            m_stream << std::format("COEFFS {:.6f} {:.6f}\n", material.coeffs[0], material.coeffs[1]);
+            m_stream << std::format("GLOW {:.6f} {}\n", material.glow.x, material.glow.y);
+            m_stream << std::format("REFRACTIVE {} {:.6f}\n", material.refractive.x, material.refractive.y);
+            m_stream << std::format("SPECULARCOLOR {:.6f} {:.6f} {:.6f} {:.6f}\n",
+                                    material.specularColor[0],
+                                    material.specularColor[1],
+                                    material.specularColor[2],
+                                    material.specularColor[3]);
+            m_stream << std::format("REFLECTIVECOLOR {:.6f} {:.6f} {:.6f} {:.6f}\n",
+                                    material.reflectiveColor[0],
+                                    material.reflectiveColor[1],
+                                    material.reflectiveColor[2],
+                                    material.reflectiveColor[3]);
+            m_stream << std::format("REFLECTIVE {} {:.6f}\n", material.reflective.x, material.reflective.y);
+            m_stream << std::format("BLINN {:.6f} {:.6f}\n", material.blinn[0], material.blinn[1]);
+            m_stream << std::format("PHONG {:.6f}\n", material.phong);
+            m_stream << '\n';
+            materialNum++;
+        }
+    }
+
+public:
+    XModelExportWriter6(std::ostream& stream, std::string gameName, std::string zoneName)
+        : XModelExportWriterBase(stream, std::move(gameName), std::move(zoneName))
+    {
+    }
+
+    void Write(const XModelCommon& xmodel) override
+    {
+        PrepareVertexMerger(xmodel);
+        WriteHeader(6);
+        WriteBones(xmodel);
+        WriteVertices(xmodel);
+        WriteFaces(xmodel);
+        WriteObjects(xmodel);
+        WriteMaterials(xmodel);
+    }
+};
+
+namespace xmodel_export
+{
+    std::unique_ptr<XModelWriter> CreateWriterForVersion6(std::ostream& stream, std::string gameName, std::string zoneName)
+    {
+        return std::make_unique<XModelExportWriter6>(stream, std::move(gameName), std::move(zoneName));
+    }
+} // namespace xmodel_export

src/ObjWriting/XModel/Export/XModelExportWriter.h

@@ -0,0 +1,11 @@
+#pragma once
+
+#include "XModel/XModelWriter.h"
+
+#include <memory>
+#include <ostream>
+
+namespace xmodel_export
+{
+    std::unique_ptr<XModelWriter> CreateWriterForVersion6(std::ostream& stream, std::string gameName, std::string zoneName);
+}

src/ObjWriting/XModel/Gltf/GltfBinOutput.cpp

@@ -0,0 +1,86 @@
+#include "GltfBinOutput.h"
+
+#include "Utils/Alignment.h"
+#include "XModel/Gltf/GltfConstants.h"
+
+#include <cstdint>
+#include <nlohmann/json.hpp>
+
+using namespace gltf;
+
+BinOutput::BinOutput(std::ostream& stream)
+    : m_stream(stream)
+{
+}
+
+void BinOutput::Write(const void* data, const size_t dataSize) const
+{
+    m_stream.write(static_cast<const char*>(data), dataSize);
+}
+
+void BinOutput::AlignToFour(const char value) const
+{
+    const auto offset = m_stream.tellp();
+    if (offset % 4 > 0)
+    {
+        const uint32_t alignmentValue = FileUtils::MakeMagic32(value, value, value, value);
+        Write(&alignmentValue, 4u - (offset % 4u));
+    }
+}
+
+std::optional<std::string> BinOutput::CreateBufferUri(const void* buffer, size_t bufferSize) const
+{
+    return std::nullopt;
+}
+
+void BinOutput::EmitJson(const nlohmann::json& json) const
+{
+    static constexpr uint32_t ZERO = 0u;
+
+    Write(&GLTF_MAGIC, sizeof(GLTF_MAGIC));
+    Write(&GLTF_VERSION, sizeof(GLTF_VERSION));
+
+    // File length will be filled later
+    Write(&ZERO, sizeof(ZERO));
+
+    // Chunk length will be filled after writing json
+    Write(&ZERO, sizeof(ZERO));
+    Write(&CHUNK_MAGIC_JSON, sizeof(CHUNK_MAGIC_JSON));
+
+    m_stream << json;
+
+    AlignToFour(' ');
+
+    const auto offsetAfterData = m_stream.tellp();
+    const auto jsonDataLength = static_cast<uint32_t>(static_cast<unsigned>(offsetAfterData) - GLTF_JSON_CHUNK_DATA_OFFSET);
+
+    // Fill chunk length now
+    m_stream.seekp(GLTF_JSON_CHUNK_LENGTH_OFFSET, std::ios::beg);
+    Write(&jsonDataLength, sizeof(jsonDataLength));
+
+    // Return to previous pos
+    m_stream.seekp(offsetAfterData, std::ios::beg);
+}
+
+void BinOutput::EmitBuffer(const void* buffer, const size_t bufferSize) const
+{
+    const auto chunkLength = utils::Align<uint32_t>(bufferSize, 4u);
+    Write(&chunkLength, sizeof(chunkLength));
+    Write(&CHUNK_MAGIC_BIN, sizeof(CHUNK_MAGIC_BIN));
+
+    Write(buffer, bufferSize);
+    AlignToFour('\0');
+}
+
+void BinOutput::Finalize() const
+{
+    const auto fileEndOffset = m_stream.tellp();
+    const auto fileSize = static_cast<uint32_t>(fileEndOffset);
+
+    // Fill chunk length now
+    m_stream.seekp(GLTF_LENGTH_OFFSET, std::ios::beg);
+    Write(&fileSize, sizeof(fileSize));
+
+    // Return to file end
+    m_stream.seekp(fileEndOffset, std::ios::beg);
+}

src/ObjWriting/XModel/Gltf/GltfBinOutput.h

@@ -0,0 +1,25 @@
+#pragma once
+
+#include "GltfOutput.h"
+
+#include <ostream>
+
+namespace gltf
+{
+    class BinOutput final : public Output
+    {
+    public:
+        explicit BinOutput(std::ostream& stream);
+
+        std::optional<std::string> CreateBufferUri(const void* buffer, size_t bufferSize) const override;
+        void EmitJson(const nlohmann::json& json) const override;
+        void EmitBuffer(const void* buffer, size_t bufferSize) const override;
+        void Finalize() const override;
+
+    private:
+        void Write(const void* data, size_t dataSize) const;
+        void AlignToFour(char value) const;
+
+        std::ostream& m_stream;
+    };
+} // namespace gltf

src/ObjWriting/XModel/Gltf/GltfOutput.h

@@ -0,0 +1,25 @@
+#pragma once
+
+#include <nlohmann/json_fwd.hpp>
+#include <optional>
+#include <string>
+
+namespace gltf
+{
+    class Output
+    {
+    protected:
+        Output() = default;
+        virtual ~Output() = default;
+        Output(const Output& other) = default;
+        Output(Output&& other) noexcept = default;
+        Output& operator=(const Output& other) = default;
+        Output& operator=(Output&& other) noexcept = default;
+
+    public:
+        virtual std::optional<std::string> CreateBufferUri(const void* buffer, size_t bufferSize) const = 0;
+        virtual void EmitJson(const nlohmann::json& json) const = 0;
+        virtual void EmitBuffer(const void* buffer, size_t bufferSize) const = 0;
+        virtual void Finalize() const = 0;
+    };
+} // namespace gltf

src/ObjWriting/XModel/Gltf/GltfTextOutput.cpp

@@ -0,0 +1,51 @@
+#include "GltfTextOutput.h"
+
+#include "Utils/Alignment.h"
+#include "XModel/Gltf/GltfConstants.h"
+
+#include <iomanip>
+#include <nlohmann/json.hpp>
+
+#define LTC_NO_PROTOTYPES
+#include <tomcrypt.h>
+
+using namespace gltf;
+
+TextOutput::TextOutput(std::ostream& stream)
+    : m_stream(stream)
+{
+}
+
+std::optional<std::string> TextOutput::CreateBufferUri(const void* buffer, const size_t bufferSize) const
+{
+    static constexpr auto URI_PREFIX_LENGTH = std::char_traits<char>::length(GLTF_DATA_URI_PREFIX);
+    const auto base64Length = 4u * ((bufferSize + 2u) / 3u);
+    const auto base64BufferSize = URI_PREFIX_LENGTH + base64Length;
+
+    std::string output(base64BufferSize, '\0');
+
+    std::memcpy(output.data(), GLTF_DATA_URI_PREFIX, URI_PREFIX_LENGTH);
+
+    unsigned long outLength = base64Length + 1u;
+    const auto result = base64_encode(static_cast<const unsigned char*>(buffer), bufferSize, &output[URI_PREFIX_LENGTH], &outLength);
+
+    assert(result == CRYPT_OK);
+    assert(outLength == base64Length);
+
+    return output;
+}
+
+void TextOutput::EmitJson(const nlohmann::json& json) const
+{
+    m_stream << std::setw(4) << json;
+}
+
+void TextOutput::EmitBuffer(const void* buffer, const size_t bufferSize) const
+{
+    // Nothing to do
+}
+
+void TextOutput::Finalize() const
+{
+    // Nothing to do
+}

src/ObjWriting/XModel/Gltf/GltfTextOutput.h

@@ -0,0 +1,22 @@
+#pragma once
+
+#include "GltfOutput.h"
+
+#include <ostream>
+
+namespace gltf
+{
+    class TextOutput final : public Output
+    {
+    public:
+        explicit TextOutput(std::ostream& stream);
+
+        std::optional<std::string> CreateBufferUri(const void* buffer, size_t bufferSize) const override;
+        void EmitJson(const nlohmann::json& json) const override;
+        void EmitBuffer(const void* buffer, size_t bufferSize) const override;
+        void Finalize() const override;
+
+    private:
+        std::ostream& m_stream;
+    };
+} // namespace gltf

src/ObjWriting/XModel/Gltf/GltfWriter.cpp

@@ -0,0 +1,621 @@
+#include "GltfWriter.h"
+
+#include "GitVersion.h"
+#include "Math/Vector.h"
+#include "XModel/Gltf/GltfConstants.h"
+#include "XModel/Gltf/JsonGltf.h"
+
+#include <format>
+
+using namespace gltf;
+using namespace nlohmann;
+
+namespace
+{
+    constexpr auto GLTF_GENERATOR = "OpenAssetTools " GIT_VERSION;
+
+    struct GltfVertex
+    {
+        float coordinates[3];
+        float normal[3];
+        float uv[2];
+    };
+
+    class GltfWriterImpl final : public gltf::Writer
+    {
+    public:
+        GltfWriterImpl(const Output* output, std::string gameName, std::string zoneName)
+            : m_output(output),
+              m_game_name(std::move(gameName)),
+              m_zone_name(std::move(zoneName))
+        {
+        }
+
+        void Write(const XModelCommon& xmodel) override
+        {
+            JsonRoot gltf;
+            std::vector<uint8_t> bufferData;
+
+            CreateJsonAsset(gltf.asset);
+            CreateSkeletonNodes(gltf, xmodel);
+            CreateMeshNode(gltf, xmodel);
+            CreateRootNode(gltf, xmodel);
+            CreateMaterials(gltf, xmodel);
+            CreateBufferViews(gltf, xmodel);
+            CreateAccessors(gltf, xmodel);
+            CreateSkin(gltf, xmodel);
+            CreateMesh(gltf, xmodel);
+            CreateScene(gltf, xmodel);
+            FillBufferData(gltf, xmodel, bufferData);
+            CreateBuffer(gltf, xmodel, bufferData);
+
+            const json jRoot = gltf;
+            m_output->EmitJson(jRoot);
+
+            if (!bufferData.empty())
+                m_output->EmitBuffer(bufferData.data(), bufferData.size());
+
+            m_output->Finalize();
+        }
+
+    private:
+        static void CreateJsonAsset(JsonAsset& asset)
+        {
+            asset.version = GLTF_VERSION_STRING;
+            asset.generator = GLTF_GENERATOR;
+        }
+
+        void CreateMeshNode(JsonRoot& gltf, const XModelCommon& xmodel)
+        {
+            JsonNode meshNode;
+
+            if (!xmodel.m_name.empty())
+                meshNode.name = xmodel.m_name;
+
+            // We only have one mesh
+            meshNode.mesh = 0u;
+
+            // Only add skin if the model has bones
+            if (!xmodel.m_bones.empty())
+            {
+                // We only have one skin
+                meshNode.skin = 0u;
+            }
+
+            if (!gltf.nodes.has_value())
+                gltf.nodes.emplace();
+
+            m_mesh_node = gltf.nodes->size();
+            gltf.nodes->emplace_back(std::move(meshNode));
+        }
+
+        void CreateRootNode(JsonRoot& gltf, const XModelCommon& xmodel)
+        {
+            JsonNode rootNode;
+
+            if (!xmodel.m_name.empty())
+                rootNode.name = std::format("{}_skel", xmodel.m_name);
+
+            if (!gltf.nodes.has_value())
+                gltf.nodes.emplace();
+
+            rootNode.children.emplace();
+            rootNode.children->push_back(m_mesh_node);
+
+            if (!xmodel.m_bones.empty())
+                rootNode.children->push_back(m_first_bone_node);
+
+            m_root_node = gltf.nodes->size();
+            gltf.nodes->emplace_back(std::move(rootNode));
+        }
+
+        void CreateMesh(JsonRoot& gltf, const XModelCommon& xmodel)
+        {
+            if (!gltf.meshes.has_value())
+                gltf.meshes.emplace();
+
+            JsonMesh mesh;
+
+            const auto hasBoneWeightData = !xmodel.m_vertex_bone_weights.empty();
+
+            auto objectIndex = 0u;
+            for (const auto& object : xmodel.m_objects)
+            {
+                JsonMeshPrimitives primitives;
+
+                if (object.materialIndex >= 0)
+                    primitives.material = static_cast<unsigned>(object.materialIndex);
+
+                primitives.attributes.POSITION = m_position_accessor;
+                primitives.attributes.NORMAL = m_normal_accessor;
+                primitives.attributes.TEXCOORD_0 = m_uv_accessor;
+
+                if (hasBoneWeightData)
+                {
+                    primitives.attributes.JOINTS_0 = m_joints_accessor;
+                    primitives.attributes.WEIGHTS_0 = m_weights_accessor;
+                }
+
+                primitives.mode = JsonMeshPrimitivesMode::TRIANGLES;
+                primitives.indices = m_first_index_accessor + objectIndex;
+
+                mesh.primitives.emplace_back(primitives);
+                objectIndex++;
+            }
+
+            gltf.meshes->emplace_back(std::move(mesh));
+        }
+
+        static void CreateMaterials(JsonRoot& gltf, const XModelCommon& xmodel)
+        {
+            if (!gltf.materials.has_value())
+                gltf.materials.emplace();
+
+            for (const auto& modelMaterial : xmodel.m_materials)
+            {
+                JsonMaterial material;
+
+                material.name = modelMaterial.name;
+
+                if (!modelMaterial.colorMapName.empty())
+                {
+                    material.pbrMetallicRoughness.emplace();
+                    material.pbrMetallicRoughness->baseColorTexture.emplace();
+
+                    material.pbrMetallicRoughness->baseColorTexture->index = CreateTexture(gltf, modelMaterial.colorMapName);
+                    material.pbrMetallicRoughness->metallicFactor = 0.0f;
+                }
+
+                if (!modelMaterial.normalMapName.empty())
+                    material.normalTexture.emplace().index = CreateTexture(gltf, modelMaterial.normalMapName);
+
+                material.doubleSided = true;
+                gltf.materials->emplace_back(material);
+            }
+        }
+
+        static unsigned CreateTexture(JsonRoot& gltf, const std::string& textureName)
+        {
+            if (!gltf.textures.has_value())
+                gltf.textures.emplace();
+            if (!gltf.images.has_value())
+                gltf.images.emplace();
+
+            auto uri = std::format("../images/{}.dds", textureName);
+
+            auto existingTexIndex = 0u;
+            for (const auto& existingTex : gltf.textures.value())
+            {
+                const auto& existingImage = gltf.images.value()[existingTex.source];
+
+                if (existingImage.uri == uri)
+                    return existingTexIndex;
+
+                existingTexIndex++;
+            }
+
+            JsonImage image;
+            image.uri = std::move(uri);
+            const auto imageIndex = gltf.images->size();
+            gltf.images->emplace_back(std::move(image));
+
+            JsonTexture texture;
+            texture.source = imageIndex;
+            const auto textureIndex = gltf.textures->size();
+            gltf.textures->emplace_back(texture);
+
+            return textureIndex;
+        }
+
+        void CreateSkeletonNodes(JsonRoot& gltf, const XModelCommon& xmodel)
+        {
+            if (xmodel.m_bones.empty())
+                return;
+
+            if (!gltf.nodes.has_value())
+                gltf.nodes.emplace();
+
+            const auto boneCount = xmodel.m_bones.size();
+            m_first_bone_node = gltf.nodes->size();
+            for (auto boneIndex = 0u; boneIndex < boneCount; boneIndex++)
+            {
+                JsonNode boneNode;
+                const auto& bone = xmodel.m_bones[boneIndex];
+
+                Vector3f translation(bone.globalOffset[0], bone.globalOffset[2], -bone.globalOffset[1]);
+                Quaternion32 rotation(bone.globalRotation.m_x, bone.globalRotation.m_z, -bone.globalRotation.m_y, bone.globalRotation.m_w);
+                if (bone.parentIndex >= 0)
+                {
+                    const auto& parentBone = xmodel.m_bones[bone.parentIndex];
+                    translation -= Vector3f(parentBone.globalOffset[0], parentBone.globalOffset[2], -parentBone.globalOffset[1]);
+                    rotation /= Quaternion32(
+                        parentBone.globalRotation.m_x, parentBone.globalRotation.m_z, -parentBone.globalRotation.m_y, parentBone.globalRotation.m_w);
+                }
+                rotation.Normalize();
+
+                boneNode.name = bone.name;
+                boneNode.translation = std::to_array({translation.x(), translation.y(), translation.z()});
+                boneNode.rotation = std::to_array({rotation.m_x, rotation.m_y, rotation.m_z, rotation.m_w});
+
+                std::vector<unsigned> children;
+                for (auto maybeChildIndex = 0u; maybeChildIndex < boneCount; maybeChildIndex++)
+                {
+                    if (xmodel.m_bones[maybeChildIndex].parentIndex == static_cast<int>(boneIndex))
+                        children.emplace_back(maybeChildIndex + m_first_bone_node);
+                }
+                if (!children.empty())
+                    boneNode.children = std::move(children);
+
+                gltf.nodes->emplace_back(std::move(boneNode));
+            }
+        }
+
+        void CreateSkin(JsonRoot& gltf, const XModelCommon& xmodel) const
+        {
+            if (xmodel.m_bones.empty())
+                return;
+
+            if (!gltf.skins.has_value())
+                gltf.skins.emplace();
+
+            JsonSkin skin;
+
+            const auto boneCount = xmodel.m_bones.size();
+
+            skin.joints.reserve(boneCount);
+            for (auto boneIndex = 0u; boneIndex < boneCount; boneIndex++)
+                skin.joints.emplace_back(boneIndex + m_first_bone_node);
+
+            skin.inverseBindMatrices = m_inverse_bind_matrices_accessor;
+
+            gltf.skins->emplace_back(std::move(skin));
+        }
+
+        void CreateScene(JsonRoot& gltf, const XModelCommon& xmodel) const
+        {
+            JsonScene scene;
+
+            // Only add skin if the model has bones
+            scene.nodes.emplace_back(m_root_node);
+
+            if (!gltf.scenes.has_value())
+                gltf.scenes.emplace();
+
+            gltf.scenes->emplace_back(std::move(scene));
+            gltf.scene = 0u;
+        }
+
+        void CreateBufferViews(JsonRoot& gltf, const XModelCommon& xmodel)
+        {
+            if (!gltf.bufferViews.has_value())
+                gltf.bufferViews.emplace();
+
+            unsigned bufferOffset = 0u;
+
+            JsonBufferView vertexBufferView;
+            vertexBufferView.buffer = 0u;
+            vertexBufferView.byteOffset = bufferOffset;
+            vertexBufferView.byteStride = sizeof(GltfVertex);
+            vertexBufferView.byteLength = sizeof(GltfVertex) * xmodel.m_vertices.size();
+            vertexBufferView.target = JsonBufferViewTarget::ARRAY_BUFFER;
+            bufferOffset += vertexBufferView.byteLength;
+
+            m_vertex_buffer_view = gltf.bufferViews->size();
+            gltf.bufferViews->emplace_back(vertexBufferView);
+
+            if (!xmodel.m_vertex_bone_weights.empty())
+            {
+                JsonBufferView jointsBufferView;
+                jointsBufferView.buffer = 0u;
+                jointsBufferView.byteOffset = bufferOffset;
+                jointsBufferView.byteLength = sizeof(uint8_t) * xmodel.m_vertices.size() * 4u;
+                jointsBufferView.target = JsonBufferViewTarget::ARRAY_BUFFER;
+                bufferOffset += jointsBufferView.byteLength;
+
+                m_joints_buffer_view = gltf.bufferViews->size();
+                gltf.bufferViews->emplace_back(jointsBufferView);
+
+                JsonBufferView weightsBufferView;
+                weightsBufferView.buffer = 0u;
+                weightsBufferView.byteOffset = bufferOffset;
+                weightsBufferView.byteLength = sizeof(float) * xmodel.m_vertices.size() * 4u;
+                weightsBufferView.target = JsonBufferViewTarget::ARRAY_BUFFER;
+                bufferOffset += weightsBufferView.byteLength;
+
+                m_weights_buffer_view = gltf.bufferViews->size();
+                gltf.bufferViews->emplace_back(weightsBufferView);
+
+                JsonBufferView inverseBindMatricesBufferView;
+                inverseBindMatricesBufferView.buffer = 0u;
+                inverseBindMatricesBufferView.byteOffset = bufferOffset;
+                inverseBindMatricesBufferView.byteLength = sizeof(float) * xmodel.m_bones.size() * 16u;
+                bufferOffset += inverseBindMatricesBufferView.byteLength;
+
+                m_inverse_bind_matrices_buffer_view = gltf.bufferViews->size();
+                gltf.bufferViews->emplace_back(inverseBindMatricesBufferView);
+            }
+
+            m_first_index_buffer_view = gltf.bufferViews->size();
+            for (const auto& object : xmodel.m_objects)
+            {
+                JsonBufferView indicesBufferView;
+                indicesBufferView.buffer = 0u;
+                indicesBufferView.byteOffset = bufferOffset;
+                indicesBufferView.byteLength = sizeof(unsigned short) * object.m_faces.size() * 3u;
+                indicesBufferView.target = JsonBufferViewTarget::ELEMENT_ARRAY_BUFFER;
+                bufferOffset += indicesBufferView.byteLength;
+
+                gltf.bufferViews->emplace_back(indicesBufferView);
+            }
+        }
+
+        void CreateAccessors(JsonRoot& gltf, const XModelCommon& xmodel)
+        {
+            if (!gltf.accessors.has_value())
+                gltf.accessors.emplace();
+
+            JsonAccessor positionAccessor;
+            positionAccessor.bufferView = m_vertex_buffer_view;
+            positionAccessor.byteOffset = offsetof(GltfVertex, coordinates);
+            positionAccessor.componentType = JsonAccessorComponentType::FLOAT;
+            positionAccessor.count = xmodel.m_vertices.size();
+            positionAccessor.type = JsonAccessorType::VEC3;
+            m_position_accessor = gltf.accessors->size();
+            gltf.accessors->emplace_back(positionAccessor);
+
+            JsonAccessor normalAccessor;
+            normalAccessor.bufferView = m_vertex_buffer_view;
+            normalAccessor.byteOffset = offsetof(GltfVertex, normal);
+            normalAccessor.componentType = JsonAccessorComponentType::FLOAT;
+            normalAccessor.count = xmodel.m_vertices.size();
+            normalAccessor.type = JsonAccessorType::VEC3;
+            m_normal_accessor = gltf.accessors->size();
+            gltf.accessors->emplace_back(normalAccessor);
+
+            JsonAccessor uvAccessor;
+            uvAccessor.bufferView = m_vertex_buffer_view;
+            uvAccessor.byteOffset = offsetof(GltfVertex, uv);
+            uvAccessor.componentType = JsonAccessorComponentType::FLOAT;
+            uvAccessor.count = xmodel.m_vertices.size();
+            uvAccessor.type = JsonAccessorType::VEC2;
+            m_uv_accessor = gltf.accessors->size();
+            gltf.accessors->emplace_back(uvAccessor);
+
+            if (!xmodel.m_vertex_bone_weights.empty())
+            {
+                JsonAccessor jointsAccessor;
+                jointsAccessor.bufferView = m_joints_buffer_view;
+                jointsAccessor.componentType = JsonAccessorComponentType::UNSIGNED_BYTE;
+                jointsAccessor.count = xmodel.m_vertices.size();
+                jointsAccessor.type = JsonAccessorType::VEC4;
+                m_joints_accessor = gltf.accessors->size();
+                gltf.accessors->emplace_back(jointsAccessor);
+
+                JsonAccessor weightsAccessor;
+                weightsAccessor.bufferView = m_weights_buffer_view;
+                weightsAccessor.componentType = JsonAccessorComponentType::FLOAT;
+                weightsAccessor.count = xmodel.m_vertices.size();
+                weightsAccessor.type = JsonAccessorType::VEC4;
+                m_weights_accessor = gltf.accessors->size();
+                gltf.accessors->emplace_back(weightsAccessor);
+
+                JsonAccessor inverseBindMatricesAccessor;
+                inverseBindMatricesAccessor.bufferView = m_inverse_bind_matrices_buffer_view;
+                inverseBindMatricesAccessor.componentType = JsonAccessorComponentType::FLOAT;
+                inverseBindMatricesAccessor.count = xmodel.m_bones.size();
+                inverseBindMatricesAccessor.type = JsonAccessorType::MAT4;
+                m_inverse_bind_matrices_accessor = gltf.accessors->size();
+                gltf.accessors->emplace_back(inverseBindMatricesAccessor);
+            }
+
+            m_first_index_accessor = gltf.accessors->size();
+            for (auto i = 0u; i < xmodel.m_objects.size(); i++)
+            {
+                const auto& object = xmodel.m_objects[i];
+
+                JsonAccessor indicesAccessor;
+                indicesAccessor.bufferView = m_first_index_buffer_view + i;
+                indicesAccessor.componentType = JsonAccessorComponentType::UNSIGNED_SHORT;
+                indicesAccessor.count = object.m_faces.size() * 3u;
+                indicesAccessor.type = JsonAccessorType::SCALAR;
+
+                gltf.accessors->emplace_back(indicesAccessor);
+            }
+        }
+
+        void FillBufferData(JsonRoot& gltf, const XModelCommon& xmodel, std::vector<uint8_t>& bufferData) const
+        {
+            const auto expectedBufferSize = GetExpectedBufferSize(xmodel);
+            bufferData.resize(expectedBufferSize);
+
+            auto currentBufferOffset = 0u;
+
+            float minPosition[3]{
+                std::numeric_limits<float>::max(),
+                std::numeric_limits<float>::max(),
+                std::numeric_limits<float>::max(),
+            };
+            float maxPosition[3]{
+                -std::numeric_limits<float>::max(),
+                -std::numeric_limits<float>::max(),
+                -std::numeric_limits<float>::max(),
+            };
+
+            for (const auto& commonVertex : xmodel.m_vertices)
+            {
+                auto* vertex = reinterpret_cast<GltfVertex*>(&bufferData[currentBufferOffset]);
+
+                vertex->coordinates[0] = commonVertex.coordinates[0];
+                vertex->coordinates[1] = commonVertex.coordinates[2];
+                vertex->coordinates[2] = -commonVertex.coordinates[1];
+
+                if (minPosition[0] > vertex->coordinates[0])
+                    minPosition[0] = vertex->coordinates[0];
+                if (minPosition[1] > vertex->coordinates[1])
+                    minPosition[1] = vertex->coordinates[1];
+                if (minPosition[2] > vertex->coordinates[2])
+                    minPosition[2] = vertex->coordinates[2];
+                if (maxPosition[0] < vertex->coordinates[0])
+                    maxPosition[0] = vertex->coordinates[0];
+                if (maxPosition[1] < vertex->coordinates[1])
+                    maxPosition[1] = vertex->coordinates[1];
+                if (maxPosition[2] < vertex->coordinates[2])
+                    maxPosition[2] = vertex->coordinates[2];
+
+                vertex->normal[0] = commonVertex.normal[0];
+                vertex->normal[1] = commonVertex.normal[2];
+                vertex->normal[2] = -commonVertex.normal[1];
+
+                vertex->uv[0] = commonVertex.uv[0];
+                vertex->uv[1] = commonVertex.uv[1];
+
+                currentBufferOffset += sizeof(GltfVertex);
+            }
+
+            if (gltf.accessors.has_value())
+            {
+                gltf.accessors.value()[m_position_accessor].min = std::vector({minPosition[0], minPosition[1], minPosition[2]});
+                gltf.accessors.value()[m_position_accessor].max = std::vector({maxPosition[0], maxPosition[1], maxPosition[2]});
+            }
+
+            if (!xmodel.m_vertex_bone_weights.empty())
+            {
+                assert(xmodel.m_vertex_bone_weights.size() == xmodel.m_vertices.size());
+
+                auto* joints = reinterpret_cast<uint8_t*>(&bufferData[currentBufferOffset]);
+                auto* weights = reinterpret_cast<float*>(&bufferData[currentBufferOffset + sizeof(uint8_t) * 4u * xmodel.m_vertex_bone_weights.size()]);
+                for (const auto& commonVertexWeights : xmodel.m_vertex_bone_weights)
+                {
+                    assert(commonVertexWeights.weights != nullptr);
+                    assert(commonVertexWeights.weightCount <= 4u);
+
+                    const auto commonVertexWeightCount = std::min(commonVertexWeights.weightCount, 4u);
+                    for (auto i = 0u; i < commonVertexWeightCount; i++)
+                    {
+                        joints[i] = static_cast<unsigned char>(commonVertexWeights.weights[i].boneIndex);
+                        weights[i] = commonVertexWeights.weights[i].weight;
+                    }
+
+                    for (auto i = commonVertexWeightCount; i < 4u; i++)
+                    {
+                        joints[i] = 0u;
+                        weights[i] = 0.0f;
+                    }
+
+                    joints += 4u;
+                    weights += 4u;
+                }
+
+                currentBufferOffset += (sizeof(uint8_t) + sizeof(float)) * 4u * xmodel.m_vertex_bone_weights.size();
+
+                auto* inverseBindMatrixData = reinterpret_cast<float*>(&bufferData[currentBufferOffset]);
+                for (const auto& bone : xmodel.m_bones)
+                {
+                    Matrix32 inverseBindMatrix;
+                    inverseBindMatrix.m_data[0][3] = -bone.globalOffset[0];
+                    inverseBindMatrix.m_data[1][3] = -bone.globalOffset[2];
+                    inverseBindMatrix.m_data[2][3] = bone.globalOffset[1];
+
+                    // In-memory = row major
+                    // gltf = column major
+                    inverseBindMatrixData[0] = inverseBindMatrix.m_data[0][0];
+                    inverseBindMatrixData[1] = inverseBindMatrix.m_data[1][0];
+                    inverseBindMatrixData[2] = inverseBindMatrix.m_data[2][0];
+                    inverseBindMatrixData[3] = inverseBindMatrix.m_data[3][0];
+                    inverseBindMatrixData[4] = inverseBindMatrix.m_data[0][1];
+                    inverseBindMatrixData[5] = inverseBindMatrix.m_data[1][1];
+                    inverseBindMatrixData[6] = inverseBindMatrix.m_data[2][1];
+                    inverseBindMatrixData[7] = inverseBindMatrix.m_data[3][1];
+                    inverseBindMatrixData[8] = inverseBindMatrix.m_data[0][2];
+                    inverseBindMatrixData[9] = inverseBindMatrix.m_data[1][2];
+                    inverseBindMatrixData[10] = inverseBindMatrix.m_data[2][2];
+                    inverseBindMatrixData[11] = inverseBindMatrix.m_data[3][2];
+                    inverseBindMatrixData[12] = inverseBindMatrix.m_data[0][3];
+                    inverseBindMatrixData[13] = inverseBindMatrix.m_data[1][3];
+                    inverseBindMatrixData[14] = inverseBindMatrix.m_data[2][3];
+                    inverseBindMatrixData[15] = inverseBindMatrix.m_data[3][3];
+
+                    inverseBindMatrixData += 16u;
+                }
+                currentBufferOffset += sizeof(float) * 16u * xmodel.m_bones.size();
+            }
+
+            for (const auto& object : xmodel.m_objects)
+            {
+                for (const auto& face : object.m_faces)
+                {
+                    auto* faceIndices = reinterpret_cast<unsigned short*>(&bufferData[currentBufferOffset]);
+                    faceIndices[0] = static_cast<unsigned short>(face.vertexIndex[2]);
+                    faceIndices[1] = static_cast<unsigned short>(face.vertexIndex[1]);
+                    faceIndices[2] = static_cast<unsigned short>(face.vertexIndex[0]);
+
+                    currentBufferOffset += sizeof(unsigned short) * 3u;
+                }
+            }
+
+            assert(expectedBufferSize == currentBufferOffset);
+        }
+
+        static size_t GetExpectedBufferSize(const XModelCommon& xmodel)
+        {
+            auto result = 0u;
+
+            result += xmodel.m_vertices.size() * sizeof(GltfVertex);
+
+            if (!xmodel.m_vertex_bone_weights.empty())
+            {
+                // Joints and weights
+                result += xmodel.m_vertices.size() * 4u * (sizeof(uint8_t) + sizeof(float));
+
+                // Inverse bind matrices
+                result += xmodel.m_bones.size() * 16u * sizeof(float);
+            }
+
+            for (const auto& object : xmodel.m_objects)
+            {
+                result += object.m_faces.size() * sizeof(unsigned short) * 3u;
+            }
+
+            return result;
+        }
+
+        void CreateBuffer(JsonRoot& gltf, const XModelCommon& xmodel, const std::vector<uint8_t>& bufferData) const
+        {
+            if (!gltf.buffers.has_value())
+                gltf.buffers.emplace();
+
+            JsonBuffer jsonBuffer;
+            jsonBuffer.byteLength = bufferData.size();
+
+            if (!bufferData.empty())
+                jsonBuffer.uri = m_output->CreateBufferUri(bufferData.data(), bufferData.size());
+
+            gltf.buffers->emplace_back(std::move(jsonBuffer));
+        }
+
+        unsigned m_mesh_node = 0u;
+        unsigned m_root_node = 0u;
+        unsigned m_first_bone_node = 0u;
+        unsigned m_position_accessor = 0u;
+        unsigned m_normal_accessor = 0u;
+        unsigned m_uv_accessor = 0u;
+        unsigned m_joints_accessor = 0u;
+        unsigned m_weights_accessor = 0u;
+        unsigned m_inverse_bind_matrices_accessor = 0u;
+        unsigned m_vertex_buffer_view = 0u;
+        unsigned m_joints_buffer_view = 0u;
+        unsigned m_weights_buffer_view = 0u;
+        unsigned m_inverse_bind_matrices_buffer_view = 0u;
+        unsigned m_first_index_buffer_view = 0u;
+        unsigned m_first_index_accessor = 0u;
+
+        const Output* m_output;
+        std::string m_game_name;
+        std::string m_zone_name;
+    };
+} // namespace
+
+std::unique_ptr<Writer> Writer::CreateWriter(const Output* output, std::string gameName, std::string zoneName)
+{
+    return std::make_unique<GltfWriterImpl>(output, std::move(gameName), std::move(zoneName));
+}

src/ObjWriting/XModel/Gltf/GltfWriter.h

@@ -0,0 +1,24 @@
+#pragma once
+
+#include "GltfOutput.h"
+#include "XModel/Gltf/JsonGltf.h"
+#include "XModel/XModelWriter.h"
+
+#include <memory>
+#include <ostream>
+
+namespace gltf
+{
+    class Writer : public XModelWriter
+    {
+    public:
+        Writer() = default;
+        ~Writer() override = default;
+        Writer(const Writer& other) = default;
+        Writer(Writer&& other) noexcept = default;
+        Writer& operator=(const Writer& other) = default;
+        Writer& operator=(Writer&& other) noexcept = default;
+
+        static std::unique_ptr<Writer> CreateWriter(const Output* output, std::string gameName, std::string zoneName);
+    };
+} // namespace gltf

src/ObjWriting/XModel/Obj/ObjWriter.cpp

@@ -0,0 +1,227 @@
+#include "ObjWriter.h"
+
+#include "Utils/DistinctMapper.h"
+#include "XModel/Obj/ObjCommon.h"
+
+#include <format>
+
+namespace
+{
+    struct ObjObjectData
+    {
+        DistinctMapper<ObjVertex> m_vertices;
+        DistinctMapper<ObjNormal> m_normals;
+        DistinctMapper<ObjUv> m_uvs;
+    };
+
+    struct ObjObjectDataOffsets
+    {
+        size_t vertexOffset;
+        size_t normalOffset;
+        size_t uvOffset;
+    };
+
+    class ObjWriter final : public XModelWriter
+    {
+    public:
+        ObjWriter(std::ostream& stream, std::string gameName, std::string zoneName, std::string mtlName)
+            : m_stream(stream),
+              m_mtl_name(std::move(mtlName)),
+              m_game_name(std::move(gameName)),
+              m_zone_name(std::move(zoneName))
+        {
+        }
+
+        void Write(const XModelCommon& xmodel) override
+        {
+            m_stream << "# OpenAssetTools OBJ File ( " << m_game_name << ")\n";
+            m_stream << "# Game Origin: " << m_game_name << "\n";
+            m_stream << "# Zone Origin: " << m_zone_name << "\n";
+
+            if (!m_mtl_name.empty())
+                m_stream << "mtllib " << m_mtl_name << "\n";
+
+            std::vector<ObjObjectDataOffsets> inputOffsetsByObject;
+            std::vector<ObjObjectDataOffsets> distinctOffsetsByObject;
+            GetObjObjectDataOffsets(xmodel, inputOffsetsByObject, distinctOffsetsByObject);
+
+            auto objectIndex = 0;
+            for (const auto& object : xmodel.m_objects)
+            {
+                const auto& objectData = m_object_data[objectIndex];
+                m_stream << "o " << object.name << "\n";
+
+                for (const auto& v : objectData.m_vertices.GetDistinctValues())
+                    m_stream << "v " << v.coordinates[0] << " " << v.coordinates[1] << " " << v.coordinates[2] << "\n";
+                for (const auto& uv : objectData.m_uvs.GetDistinctValues())
+                    m_stream << "vt " << uv.uv[0] << " " << uv.uv[1] << "\n";
+                for (const auto& n : objectData.m_normals.GetDistinctValues())
+                    m_stream << "vn " << n.normal[0] << " " << n.normal[1] << " " << n.normal[2] << "\n";
+
+                if (object.materialIndex >= 0 && static_cast<unsigned>(object.materialIndex) < xmodel.m_materials.size())
+                    m_stream << "usemtl " << xmodel.m_materials[object.materialIndex].name << "\n";
+
+                auto faceIndex = 0u;
+                for (const auto& f : object.m_faces)
+                {
+                    const auto faceVertexOffset = 3u * faceIndex;
+                    const size_t v[3]{
+                        objectData.m_vertices.GetDistinctPositionByInputPosition(faceVertexOffset + 0) + distinctOffsetsByObject[objectIndex].vertexOffset + 1,
+                        objectData.m_vertices.GetDistinctPositionByInputPosition(faceVertexOffset + 1) + distinctOffsetsByObject[objectIndex].vertexOffset + 1,
+                        objectData.m_vertices.GetDistinctPositionByInputPosition(faceVertexOffset + 2) + distinctOffsetsByObject[objectIndex].vertexOffset + 1,
+                    };
+                    const size_t n[3]{
+                        objectData.m_normals.GetDistinctPositionByInputPosition(faceVertexOffset + 0) + distinctOffsetsByObject[objectIndex].normalOffset + 1,
+                        objectData.m_normals.GetDistinctPositionByInputPosition(faceVertexOffset + 1) + distinctOffsetsByObject[objectIndex].normalOffset + 1,
+                        objectData.m_normals.GetDistinctPositionByInputPosition(faceVertexOffset + 2) + distinctOffsetsByObject[objectIndex].normalOffset + 1,
+                    };
+                    const size_t uv[3]{
+                        objectData.m_uvs.GetDistinctPositionByInputPosition(faceVertexOffset + 0) + distinctOffsetsByObject[objectIndex].uvOffset + 1,
+                        objectData.m_uvs.GetDistinctPositionByInputPosition(faceVertexOffset + 1) + distinctOffsetsByObject[objectIndex].uvOffset + 1,
+                        objectData.m_uvs.GetDistinctPositionByInputPosition(faceVertexOffset + 2) + distinctOffsetsByObject[objectIndex].uvOffset + 1,
+                    };
+
+                    m_stream << std::format("f {}/{}/{} {}/{}/{} {}/{}/{}\n", v[0], uv[0], n[0], v[1], uv[1], n[1], v[2], uv[2], n[2]);
+                    faceIndex++;
+                }
+
+                objectIndex++;
+            }
+        }
+
+        void GetObjObjectDataOffsets(const XModelCommon& xmodel,
+                                     std::vector<ObjObjectDataOffsets>& inputOffsets,
+                                     std::vector<ObjObjectDataOffsets>& distinctOffsets)
+        {
+            ObjObjectDataOffsets currentInputOffsets{};
+            ObjObjectDataOffsets currentDistinctOffsets{};
+
+            AddObjFaces(xmodel);
+
+            for (const auto& objectData : m_object_data)
+            {
+                inputOffsets.push_back(currentInputOffsets);
+                distinctOffsets.push_back(currentDistinctOffsets);
+
+                currentInputOffsets.vertexOffset += objectData.m_vertices.GetInputValueCount();
+                currentInputOffsets.normalOffset += objectData.m_normals.GetInputValueCount();
+                currentInputOffsets.uvOffset += objectData.m_uvs.GetInputValueCount();
+                currentDistinctOffsets.vertexOffset += objectData.m_vertices.GetDistinctValueCount();
+                currentDistinctOffsets.normalOffset += objectData.m_normals.GetDistinctValueCount();
+                currentDistinctOffsets.uvOffset += objectData.m_uvs.GetDistinctValueCount();
+            }
+        }
+
+        void AddObjFaces(const XModelCommon& common)
+        {
+            m_object_data.resize(common.m_objects.size());
+
+            auto objectIndex = 0u;
+            for (const auto& commonObject : common.m_objects)
+            {
+                auto& objectData = m_object_data[objectIndex];
+
+                for (const auto& commonFace : commonObject.m_faces)
+                {
+                    ObjFace face{};
+                    face.vertexIndex[0] = commonFace.vertexIndex[2];
+                    face.vertexIndex[1] = commonFace.vertexIndex[1];
+                    face.vertexIndex[2] = commonFace.vertexIndex[0];
+                    face.normalIndex[0] = face.vertexIndex[0];
+                    face.normalIndex[1] = face.vertexIndex[1];
+                    face.normalIndex[2] = face.vertexIndex[2];
+                    face.uvIndex[0] = face.vertexIndex[0];
+                    face.uvIndex[1] = face.vertexIndex[1];
+                    face.uvIndex[2] = face.vertexIndex[2];
+
+                    // Reverse order for OBJ
+                    AddObjVertex(objectData, common, commonFace.vertexIndex[2]);
+                    AddObjVertex(objectData, common, commonFace.vertexIndex[1]);
+                    AddObjVertex(objectData, common, commonFace.vertexIndex[0]);
+                }
+
+                objectIndex++;
+            }
+        }
+
+        static void AddObjVertex(ObjObjectData& objectData, const XModelCommon& common, const int commonVertexIndex)
+        {
+            const auto& commonVertex = common.m_vertices[commonVertexIndex];
+
+            ObjVertex objVertex{};
+            objVertex.coordinates[0] = commonVertex.coordinates[0];
+            objVertex.coordinates[1] = commonVertex.coordinates[2];
+            objVertex.coordinates[2] = -commonVertex.coordinates[1];
+            objectData.m_vertices.Add(objVertex);
+
+            ObjNormal objNormal{};
+            objNormal.normal[0] = commonVertex.normal[0];
+            objNormal.normal[1] = commonVertex.normal[2];
+            objNormal.normal[2] = -commonVertex.normal[1];
+            objectData.m_normals.Add(objNormal);
+
+            ObjUv objUv{};
+            objUv.uv[0] = commonVertex.uv[0];
+            objUv.uv[1] = 1.0f - commonVertex.uv[1];
+            objectData.m_uvs.Add(objUv);
+        }
+
+        std::ostream& m_stream;
+        std::string m_mtl_name;
+        std::string m_game_name;
+        std::string m_zone_name;
+        std::vector<ObjObjectData> m_object_data;
+    };
+
+    class MtlWriter final : public XModelWriter
+    {
+    public:
+        MtlWriter(std::ostream& stream, std::string gameName, std::string zoneName)
+            : m_stream(stream),
+              m_game_name(std::move(gameName)),
+              m_zone_name(std::move(zoneName))
+        {
+        }
+
+        void Write(const XModelCommon& xmodel) override
+        {
+            m_stream << "# OpenAssetTools MAT File ( " << m_game_name << ")\n";
+            m_stream << "# Game Origin: " << m_game_name << "\n";
+            m_stream << "# Zone Origin: " << m_zone_name << "\n";
+            m_stream << "# Material count: " << xmodel.m_materials.size() << "\n";
+
+            for (const auto& material : xmodel.m_materials)
+            {
+                m_stream << "\n";
+                m_stream << "newmtl " << material.name << "\n";
+
+                if (!material.colorMapName.empty())
+                    m_stream << "map_Kd ../images/" << material.colorMapName << ".dds\n";
+
+                if (!material.normalMapName.empty())
+                    m_stream << "map_bump ../images/" << material.normalMapName << ".dds\n";
+
+                if (!material.specularMapName.empty())
+                    m_stream << "map_Ks ../images/" << material.specularMapName << ".dds\n";
+            }
+        }
+
+    private:
+        std::ostream& m_stream;
+        std::string m_game_name;
+        std::string m_zone_name;
+    };
+} // namespace
+
+namespace obj
+{
+    std::unique_ptr<XModelWriter> CreateObjWriter(std::ostream& stream, std::string mtlName, std::string gameName, std::string zoneName)
+    {
+        return std::make_unique<ObjWriter>(stream, std::move(mtlName), std::move(gameName), std::move(zoneName));
+    }
+
+    std::unique_ptr<XModelWriter> CreateMtlWriter(std::ostream& stream, std::string gameName, std::string zoneName)
+    {
+        return std::make_unique<MtlWriter>(stream, std::move(gameName), std::move(zoneName));
+    }
+} // namespace obj

src/ObjWriting/XModel/Obj/ObjWriter.h

@@ -0,0 +1,12 @@
+#pragma once
+
+#include "XModel/XModelWriter.h"
+
+#include <memory>
+#include <ostream>
+
+namespace obj
+{
+    std::unique_ptr<XModelWriter> CreateObjWriter(std::ostream& stream, std::string mtlName, std::string gameName, std::string zoneName);
+    std::unique_ptr<XModelWriter> CreateMtlWriter(std::ostream& stream, std::string gameName, std::string zoneName);
+} // namespace obj

src/ObjWriting/XModel/XModelWriter.h

@@ -0,0 +1,18 @@
+#pragma once
+
+#include "XModel/XModelCommon.h"
+
+#include <vector>
+
+class XModelWriter
+{
+public:
+    XModelWriter() = default;
+    virtual ~XModelWriter() = default;
+    XModelWriter(const XModelWriter& other) = default;
+    XModelWriter(XModelWriter&& other) noexcept = default;
+    XModelWriter& operator=(const XModelWriter& other) = default;
+    XModelWriter& operator=(XModelWriter&& other) noexcept = default;
+
+    virtual void Write(const XModelCommon& xmodel) = 0;
+};

src/Unlinker/UnlinkerArgs.cpp

@@ -5,6 +5,7 @@
 #include "ObjWriting.h"
 #include "Utils/Arguments/UsageInformation.h"
 #include "Utils/FileUtils.h"
+#include "Utils/StringUtils.h"
 
 #include <iostream>
 #include <regex>
@@ -79,7 +80,7 @@ const CommandLineOption* const OPTION_IMAGE_FORMAT =
 const CommandLineOption* const OPTION_MODEL_FORMAT = 
     CommandLineOption::Builder::Create()
     .WithLongName("model-format")
-    .WithDescription("Specifies the format of dumped model files. Valid values are: XMODEL_EXPORT, OBJ")
+    .WithDescription("Specifies the format of dumped model files. Valid values are: XMODEL_EXPORT, OBJ, GLTF, GLB")
     .WithParameter("modelFormatValue")
     .Build();
 
@@ -179,8 +180,7 @@ void UnlinkerArgs::SetVerbose(const bool isVerbose)
 bool UnlinkerArgs::SetImageDumpingMode()
 {
     auto specifiedValue = m_argument_parser.GetValueForOption(OPTION_IMAGE_FORMAT);
-    for (auto& c : specifiedValue)
-        c = static_cast<char>(tolower(c));
+    utils::MakeStringLowerCase(specifiedValue);
 
     if (specifiedValue == "dds")
     {
@@ -202,8 +202,7 @@ bool UnlinkerArgs::SetImageDumpingMode()
 bool UnlinkerArgs::SetModelDumpingMode()
 {
     auto specifiedValue = m_argument_parser.GetValueForOption(OPTION_MODEL_FORMAT);
-    for (auto& c : specifiedValue)
-        c = static_cast<char>(tolower(c));
+    utils::MakeStringLowerCase(specifiedValue);
 
     if (specifiedValue == "xmodel_export")
     {
@@ -217,6 +216,18 @@ bool UnlinkerArgs::SetModelDumpingMode()
         return true;
     }
 
+    if (specifiedValue == "gltf")
+    {
+        ObjWriting::Configuration.ModelOutputFormat = ObjWriting::Configuration_t::ModelOutputFormat_e::GLTF;
+        return true;
+    }
+
+    if (specifiedValue == "glb")
+    {
+        ObjWriting::Configuration.ModelOutputFormat = ObjWriting::Configuration_t::ModelOutputFormat_e::GLB;
+        return true;
+    }
+
     const std::string originalValue = m_argument_parser.GetValueForOption(OPTION_MODEL_FORMAT);
     printf("Illegal value: \"%s\" is not a valid model output format. Use -? to see usage information.\n", originalValue.c_str());
     return false;
@@ -238,8 +249,7 @@ void UnlinkerArgs::ParseCommaSeparatedAssetTypeString(const std::string& input)
     size_t endPos;
 
     std::string lowerInput(input);
-    for (auto& c : lowerInput)
-        c = static_cast<char>(tolower(c));
+    utils::MakeStringLowerCase(lowerInput);
 
     while (currentPos < lowerInput.size() && (endPos = lowerInput.find_first_of(',', currentPos)) != std::string::npos)
     {

src/Utils/Math/Quaternion.h

@@ -51,6 +51,135 @@ public:
 
         return Matrix<T>(m00, m01, m02, 0, m10, m11, m12, 0, m20, m21, m22, 0, 0, 0, 0, T(1.0));
     }
+
+    static T dot(const Quaternion& q1, const Quaternion& q2)
+    {
+        return static_cast<T>((q1.m_x * q2.m_x) + (q1.m_y * q2.m_y) + (q1.m_z * q2.m_z) + (q1.m_w * q2.m_w));
+    }
+
+    static Quaternion& conj(Quaternion& result)
+    {
+        result.m_x = -result.m_x;
+        result.m_y = -result.m_y;
+        result.m_z = -result.m_z;
+        return result;
+    }
+
+    static Quaternion& invert(Quaternion& result)
+    {
+        // from game programming gems p198
+        // do result = conj( q ) / norm( q )
+        Quaternion::conj(result);
+
+        // return if norm() is near 0 (divide by 0 would result in NaN)
+        T l = result.lengthSquared();
+        if (l < static_cast<T>(0.0001))
+        {
+            return result;
+        }
+
+        T l_inv = static_cast<T>(1.0) / l;
+        result.m_x *= l_inv;
+        result.m_y *= l_inv;
+        result.m_z *= l_inv;
+        result.m_w *= l_inv;
+        return result;
+    }
+
+    T lengthSquared() const
+    {
+        return Quaternion::dot(*this, *this);
+    }
+
+    T length() const
+    {
+        return sqrt(lengthSquared());
+    }
+
+    void Normalize()
+    {
+        const auto l = length();
+
+        // return if no magnitude (already as normalized as possible)
+        if (l < static_cast<T>(0.0001))
+            return;
+
+        T inverseLength = static_cast<T>(1.0) / l;
+        m_x *= inverseLength;
+        m_y *= inverseLength;
+        m_z *= inverseLength;
+        m_w *= inverseLength;
+    }
+
+    friend Quaternion operator+(const Quaternion& lhs, const Quaternion& rhs)
+    {
+        return Quaternion(lhs.m_x + rhs.m_x, lhs.m_y + rhs.m_y, lhs.m_z + rhs.m_z, lhs.m_w + rhs.m_w);
+    }
+
+    friend Quaternion operator-(const Quaternion& lhs, const Quaternion& rhs)
+    {
+        return Quaternion(lhs.m_x - rhs.m_x, lhs.m_y - rhs.m_y, lhs.m_z - rhs.m_z, lhs.m_w - rhs.m_w);
+    }
+
+    friend Quaternion& operator+=(Quaternion& lhs, const Quaternion& rhs)
+    {
+        lhs.m_x += rhs.m_x;
+        lhs.m_y += rhs.m_y;
+        lhs.m_z += rhs.m_z;
+        lhs.m_w += rhs.m_w;
+
+        return lhs;
+    }
+
+    friend Quaternion& operator-=(Quaternion& lhs, const Quaternion& rhs)
+    {
+        lhs.m_x -= rhs.m_x;
+        lhs.m_y -= rhs.m_y;
+        lhs.m_z -= rhs.m_z;
+        lhs.m_w -= rhs.m_w;
+
+        return lhs;
+    }
+
+    friend Quaternion operator*(const Quaternion& lhs, const Quaternion& rhs)
+    {
+        const T x2 = lhs.m_w * rhs.m_x + lhs.m_x * rhs.m_w + lhs.m_y * rhs.m_z - lhs.m_z * rhs.m_y;
+        const T y2 = lhs.m_w * rhs.m_y + lhs.m_y * rhs.m_w + lhs.m_z * rhs.m_x - lhs.m_x * rhs.m_z;
+        const T z2 = lhs.m_w * rhs.m_z + lhs.m_z * rhs.m_w + lhs.m_x * rhs.m_y - lhs.m_y * rhs.m_x;
+        const T w2 = lhs.m_w * rhs.m_w - lhs.m_x * rhs.m_x - lhs.m_y * rhs.m_y - lhs.m_z * rhs.m_z;
+
+        return Quaternion(x2, y2, z2, w2);
+    }
+
+    friend Quaternion operator/(const Quaternion& lhs, const Quaternion& rhs)
+    {
+        Quaternion rhsInv = rhs;
+        Quaternion::invert(rhsInv);
+        return lhs * rhsInv;
+    }
+
+    friend Quaternion& operator*=(Quaternion& lhs, const Quaternion& rhs)
+    {
+        const T x2 = lhs.m_w * rhs.m_x + lhs.m_x * rhs.m_w + lhs.m_y * rhs.m_z - lhs.m_z * rhs.m_y;
+        const T y2 = lhs.m_w * rhs.m_y + lhs.m_y * rhs.m_w + lhs.m_z * rhs.m_x - lhs.m_x * rhs.m_z;
+        const T z2 = lhs.m_w * rhs.m_z + lhs.m_z * rhs.m_w + lhs.m_x * rhs.m_y - lhs.m_y * rhs.m_x;
+        const T w2 = lhs.m_w * rhs.m_w - lhs.m_x * rhs.m_x - lhs.m_y * rhs.m_y - lhs.m_z * rhs.m_z;
+
+        lhs.m_x = x2;
+        lhs.m_y = y2;
+        lhs.m_z = z2;
+        lhs.m_w = w2;
+
+        return lhs;
+    }
+
+    friend Quaternion& operator/=(Quaternion& lhs, const Quaternion& rhs)
+    {
+        Quaternion rhsInv = rhs;
+        Quaternion::invert(rhsInv);
+        lhs *= rhsInv;
+        return lhs;
+    }
 };
 
 typedef Quaternion<float> Quaternion32;

src/Utils/Math/Vector.h

@@ -24,6 +24,12 @@ public:
     {
     }
 
+    ~Vector2() = default;
+    Vector2(const Vector2& other) = default;
+    Vector2(Vector2&& other) noexcept = default;
+    Vector2& operator=(const Vector2& other) = default;
+    Vector2& operator=(Vector2&& other) noexcept = default;
+
     _NODISCARD T& operator()(const size_t index)
     {
         assert(index < 2);
@@ -55,6 +61,32 @@ public:
     {
         return m_value[1];
     }
+
+    friend Vector2 operator+(const Vector2& lhs, const Vector2& rhs)
+    {
+        return Vector2(lhs.m_value[0] + rhs.m_value[0], lhs.m_value[1] + rhs.m_value[1]);
+    }
+
+    friend Vector2 operator-(const Vector2& lhs, const Vector2& rhs)
+    {
+        return Vector2(lhs.m_value[0] - rhs.m_value[0], lhs.m_value[1] - rhs.m_value[1]);
+    }
+
+    friend Vector2& operator+=(Vector2& lhs, const Vector2& rhs)
+    {
+        lhs.m_value[0] += rhs.m_value[0];
+        lhs.m_value[1] += rhs.m_value[1];
+
+        return lhs;
+    }
+
+    friend Vector2& operator-=(Vector2& lhs, const Vector2& rhs)
+    {
+        lhs.m_value[0] -= rhs.m_value[0];
+        lhs.m_value[1] -= rhs.m_value[1];
+
+        return lhs;
+    }
 };
 
 typedef Vector2<float> Vector2f;
@@ -80,6 +112,12 @@ public:
     {
     }
 
+    ~Vector3() = default;
+    Vector3(const Vector3& other) = default;
+    Vector3(Vector3&& other) noexcept = default;
+    Vector3& operator=(const Vector3& other) = default;
+    Vector3& operator=(Vector3&& other) noexcept = default;
+
     _NODISCARD T& operator()(const size_t index)
     {
         assert(index < 3);
@@ -151,6 +189,34 @@ public:
     {
         return m_value[2];
     }
+
+    friend Vector3 operator+(const Vector3& lhs, const Vector3& rhs)
+    {
+        return Vector3(lhs.m_value[0] + rhs.m_value[0], lhs.m_value[1] + rhs.m_value[1], lhs.m_value[2] + rhs.m_value[2]);
+    }
+
+    friend Vector3 operator-(const Vector3& lhs, const Vector3& rhs)
+    {
+        return Vector3(lhs.m_value[0] - rhs.m_value[0], lhs.m_value[1] - rhs.m_value[1], lhs.m_value[2] - rhs.m_value[2]);
+    }
+
+    friend Vector3& operator+=(Vector3& lhs, const Vector3& rhs)
+    {
+        lhs.m_value[0] += rhs.m_value[0];
+        lhs.m_value[1] += rhs.m_value[1];
+        lhs.m_value[2] += rhs.m_value[2];
+
+        return lhs;
+    }
+
+    friend Vector3& operator-=(Vector3& lhs, const Vector3& rhs)
+    {
+        lhs.m_value[0] -= rhs.m_value[0];
+        lhs.m_value[1] -= rhs.m_value[1];
+        lhs.m_value[2] -= rhs.m_value[2];
+
+        return lhs;
+    }
 };
 
 typedef Vector3<float> Vector3f;
@@ -176,6 +242,12 @@ public:
     {
     }
 
+    ~Vector4() = default;
+    Vector4(const Vector4& other) = default;
+    Vector4(Vector4&& other) noexcept = default;
+    Vector4& operator=(const Vector4& other) = default;
+    Vector4& operator=(Vector4&& other) noexcept = default;
+
     _NODISCARD T& operator()(const size_t index)
     {
         assert(index < 4);
@@ -267,6 +339,36 @@ public:
     {
         return m_value[3];
     }
+
+    friend Vector4 operator+(const Vector4& lhs, const Vector4& rhs)
+    {
+        return Vector4(lhs.m_value[0] + rhs.m_value[0], lhs.m_value[1] + rhs.m_value[1], lhs.m_value[2] + rhs.m_value[2], lhs.m_value[3] + rhs.m_value[3]);
+    }
+
+    friend Vector4 operator-(const Vector4& lhs, const Vector4& rhs)
+    {
+        return Vector4(lhs.m_value[0] - rhs.m_value[0], lhs.m_value[1] - rhs.m_value[1], lhs.m_value[2] - rhs.m_value[2], lhs.m_value[3] - rhs.m_value[3]);
+    }
+
+    friend Vector4& operator+=(Vector4& lhs, const Vector4& rhs)
+    {
+        lhs.m_value[0] += rhs.m_value[0];
+        lhs.m_value[1] += rhs.m_value[1];
+        lhs.m_value[2] += rhs.m_value[2];
+        lhs.m_value[3] += rhs.m_value[3];
+
+        return lhs;
+    }
+
+    friend Vector4& operator-=(Vector4& lhs, const Vector4& rhs)
+    {
+        lhs.m_value[0] -= rhs.m_value[0];
+        lhs.m_value[1] -= rhs.m_value[1];
+        lhs.m_value[2] -= rhs.m_value[2];
+        lhs.m_value[3] -= rhs.m_value[3];
+
+        return lhs;
+    }
 };
 
 typedef Vector4<float> Vector4f;