From dec2ae96cbf67bd9e9ddb979e6b33a4e6624e5ca Mon Sep 17 00:00:00 2001
From: njohnson <gitea.nicholasjohnson.info>
Date: Tue, 28 Apr 2026 20:54:37 -0400
Subject: [PATCH] Add loader logic from IW4.

---
 .../Game/IW3/Sound/LoaderSoundCurveIW3.cpp    | 80 +++++++++++++++++++
 .../Game/IW3/Sound/LoaderSoundCurveIW3.h      | 13 +++
 2 files changed, 93 insertions(+)
 create mode 100644 src/ObjLoading/Game/IW3/Sound/LoaderSoundCurveIW3.cpp
 create mode 100644 src/ObjLoading/Game/IW3/Sound/LoaderSoundCurveIW3.h

diff --git a/src/ObjLoading/Game/IW3/Sound/LoaderSoundCurveIW3.cpp b/src/ObjLoading/Game/IW3/Sound/LoaderSoundCurveIW3.cpp
new file mode 100644
index 00000000..fabbd089
--- /dev/null
+++ b/src/ObjLoading/Game/IW3/Sound/LoaderSoundCurveIW3.cpp
@@ -0,0 +1,80 @@
+#include "LoaderSoundCurveIW3.h"
+
+#include "Game/IW3/IW3.h"
+#include "ObjLoading.h"
+#include "Parsing/Graph2D/Graph2DReader.h"
+#include "Pool/GlobalAssetPool.h"
+#include "Sound/SoundCurveCommon.h"
+#include "Utils/Logging/Log.h"
+
+#include <cstring>
+#include <format>
+#include <iostream>
+#include <sstream>
+
+using namespace IW3;
+
+namespace
+{
+    class LoaderSoundCurve final : public AssetCreator<AssetSoundCurve>
+    {
+    public:
+        LoaderSoundCurve(MemoryManager& memory, ISearchPath& searchPath)
+            : m_memory(memory),
+              m_search_path(searchPath)
+        {
+        }
+
+        AssetCreationResult CreateAsset(const std::string& assetName, AssetCreationContext& context) override
+        {
+            const auto fileName = sound_curve::GetFileNameForAssetName(assetName);
+            const auto file = m_search_path.Open(fileName);
+            if (!file.IsOpen())
+                return AssetCreationResult::NoAction();
+
+            const auto sndCurveData = graph2d::Read("sound curve", "SNDCURVE", *file.m_stream, fileName, assetName);
+
+            if (!sndCurveData)
+                return AssetCreationResult::Failure();
+
+            if (sndCurveData->knots.size() > std::extent_v<decltype(SndCurve::knots)>)
+            {
+                con::error("Failed to load SndCurve \"{}\": Too many knots ({})", assetName, sndCurveData->knots.size());
+                return AssetCreationResult::Failure();
+            }
+
+            auto* sndCurve = m_memory.Alloc<SndCurve>();
+            sndCurve->filename = m_memory.Dup(assetName.c_str());
+            sndCurve->knotCount = static_cast<uint16_t>(sndCurveData->knots.size());
+
+            for (auto i = 0u; i < std::extent_v<decltype(SndCurve::knots)>; i++)
+            {
+                if (i < sndCurveData->knots.size())
+                {
+                    const auto& [x, y] = sndCurveData->knots[i];
+                    sndCurve->knots[i][0] = static_cast<float>(x);
+                    sndCurve->knots[i][1] = static_cast<float>(y);
+                }
+                else
+                {
+                    sndCurve->knots[i][0] = 0;
+                    sndCurve->knots[i][1] = 0;
+                }
+            }
+
+            return AssetCreationResult::Success(context.AddAsset<AssetSoundCurve>(assetName, sndCurve));
+        }
+
+    private:
+        MemoryManager& m_memory;
+        ISearchPath& m_search_path;
+    };
+} // namespace
+
+namespace sound_curve
+{
+    std::unique_ptr<AssetCreator<AssetSoundCurve>> CreateLoaderIW3(MemoryManager& memory, ISearchPath& searchPath)
+    {
+        return std::make_unique<LoaderSoundCurve>(memory, searchPath);
+    }
+} // namespace sound_curve
diff --git a/src/ObjLoading/Game/IW3/Sound/LoaderSoundCurveIW3.h b/src/ObjLoading/Game/IW3/Sound/LoaderSoundCurveIW3.h
new file mode 100644
index 00000000..08dae2ad
--- /dev/null
+++ b/src/ObjLoading/Game/IW3/Sound/LoaderSoundCurveIW3.h
@@ -0,0 +1,13 @@
+#pragma once
+
+#include "Asset/IAssetCreator.h"
+#include "Game/IW3/IW3.h"
+#include "SearchPath/ISearchPath.h"
+#include "Utils/MemoryManager.h"
+
+#include <memory>
+
+namespace sound_curve
+{
+    std::unique_ptr<AssetCreator<IW3::AssetSoundCurve>> CreateLoaderIW3(MemoryManager& memory, ISearchPath& searchPath);
+} // namespace sound_curve