chore: restructure sound curve loader to load generic 2D graphs instead

src/ObjLoading/Sound/SoundCurveLoader.cpp

@@ -0,0 +1,23 @@
+#include "SoundCurveLoader.h"
+
+#include "Parsing/Graph2D/Graph2DReader.h"
+
+#include <format>
+#include <iostream>
+
+namespace sound_curve
+{
+    std::unique_ptr<GenericGraph2D> LoadSoundCurve(const IAssetLoadingManager* manager, const std::string& soundCurveName)
+    {
+        auto* searchPath = manager->GetAssetLoadingContext()->m_raw_search_path;
+        const auto fileName = std::format("soundaliases/{}.vfcurve", soundCurveName);
+        const auto file = searchPath->Open(fileName);
+        if (!file.IsOpen())
+        {
+            std::cerr << std::format("Failed to open file for sound curve \"{}\"\n", soundCurveName);
+            return nullptr;
+        }
+
+        return graph2d::Read("sound curve", "SNDCURVE", *file.m_stream, fileName, soundCurveName);
+    }
+} // namespace sound_curve

src/ObjLoading/Sound/SoundCurveLoader.h

@@ -0,0 +1,11 @@
+#pragma once
+
+#include "AssetLoading/IAssetLoadingManager.h"
+#include "Parsing/GenericGraph2D.h"
+
+#include <memory>
+
+namespace sound_curve
+{
+    std::unique_ptr<GenericGraph2D> LoadSoundCurve(const IAssetLoadingManager* manager, const std::string& soundCurveName);
+}