From 695932d2dbb2e2d1dbc731b316f529ec3706e4c7 Mon Sep 17 00:00:00 2001
From: Alexei Kotov <alexdobrohotov@yandex.ru>
Date: Wed, 18 Sep 2024 22:49:14 +0300
Subject: [PATCH] Parse BSDistantObjectInstancedNode

---
 components/nif/niffile.cpp |  2 ++
 components/nif/node.cpp    | 39 ++++++++++++++++++++++++++++++++++++++
 components/nif/node.hpp    | 32 +++++++++++++++++++++++++++++++
 components/nif/record.hpp  |  1 +
 4 files changed, 74 insertions(+)

diff --git a/components/nif/niffile.cpp b/components/nif/niffile.cpp
index bdf417d957..113e43e185 100644
--- a/components/nif/niffile.cpp
+++ b/components/nif/niffile.cpp
@@ -71,6 +71,8 @@ namespace Nif
             { "BSBlastNode", &construct<BSRangeNode, RC_NiNode> },
             { "BSDamageStage", &construct<BSRangeNode, RC_NiNode> },
             { "BSDebrisNode", &construct<BSRangeNode, RC_NiNode> },
+            { "BSDistantObjectInstancedNode",
+                &construct<BSDistantObjectInstancedNode, RC_BSDistantObjectInstancedNode> },
             { "BSFadeNode", &construct<NiNode, RC_NiNode> },
             { "BSLeafAnimNode", &construct<NiNode, RC_NiNode> },
             { "BSMasterParticleSystem", &construct<BSMasterParticleSystem, RC_NiNode> },
diff --git a/components/nif/node.cpp b/components/nif/node.cpp
index b91f143d00..c2655a3e9c 100644
--- a/components/nif/node.cpp
+++ b/components/nif/node.cpp
@@ -742,4 +742,43 @@ namespace Nif
         nif->read(mCurrent);
     }
 
+    void BSResourceID::read(NIFStream* nif)
+    {
+        nif->read(mFileHash);
+        nif->readArray(mExtension);
+        nif->read(mDirectoryHash);
+    }
+
+    void BSDistantObjectInstance::read(NIFStream* nif)
+    {
+        mResourceID.read(nif);
+        nif->skip(12 * nif->get<uint32_t>()); // Unknown data
+        mTransforms.resize(nif->get<uint32_t>());
+        for (osg::Matrixf& transform : mTransforms)
+        {
+            std::array<float, 16> mat;
+            nif->readArray(mat);
+            transform.set(mat.data());
+        }
+    }
+
+    void BSShaderTextureArray::read(NIFStream* nif)
+    {
+        nif->skip(1); // Unknown
+        mTextureArrays.resize(nif->get<uint32_t>());
+        for (std::vector<std::string>& textureArray : mTextureArrays)
+            nif->getSizedStrings(textureArray, nif->get<uint32_t>());
+    }
+
+    void BSDistantObjectInstancedNode::read(NIFStream* nif)
+    {
+        BSMultiBoundNode::read(nif);
+
+        mInstances.resize(nif->get<uint32_t>());
+        for (BSDistantObjectInstance& instance : mInstances)
+            instance.read(nif);
+        for (BSShaderTextureArray& textureArray : mShaderTextureArrays)
+            textureArray.read(nif);
+    }
+
 }
diff --git a/components/nif/node.hpp b/components/nif/node.hpp
index 32746f7a9f..e9306fa83f 100644
--- a/components/nif/node.hpp
+++ b/components/nif/node.hpp
@@ -494,5 +494,37 @@ namespace Nif
         void read(NIFStream* nif) override;
     };
 
+    struct BSResourceID
+    {
+        uint32_t mFileHash;
+        std::array<char, 4> mExtension;
+        uint32_t mDirectoryHash;
+
+        void read(NIFStream* nif);
+    };
+
+    struct BSDistantObjectInstance
+    {
+        BSResourceID mResourceID;
+        std::vector<osg::Matrixf> mTransforms;
+
+        void read(NIFStream* nif);
+    };
+
+    struct BSShaderTextureArray
+    {
+        std::vector<std::vector<std::string>> mTextureArrays;
+
+        void read(NIFStream* nif);
+    };
+
+    struct BSDistantObjectInstancedNode : BSMultiBoundNode
+    {
+        std::vector<BSDistantObjectInstance> mInstances;
+        std::array<BSShaderTextureArray, 3> mShaderTextureArrays;
+
+        void read(NIFStream* nif) override;
+    };
+
 }
 #endif
diff --git a/components/nif/record.hpp b/components/nif/record.hpp
index fb52daa63f..3be7609c97 100644
--- a/components/nif/record.hpp
+++ b/components/nif/record.hpp
@@ -89,6 +89,7 @@ namespace Nif
         RC_BSDynamicTriShape,
         RC_BSDismemberSkinInstance,
         RC_BSDistantObjectExtraData,
+        RC_BSDistantObjectInstancedNode,
         RC_BSDistantObjectLargeRefExtraData,
         RC_BSEffectShaderProperty,
         RC_BSEffectShaderPropertyColorController,