refactor: restructure light def dumper

src/ObjLoading/Game/IW4/LightDef/LightDefLoaderIW4.cpp

@@ -0,0 +1,78 @@
+#include "LightDefLoaderIW4.h"
+
+#include "Game/IW4/IW4.h"
+#include "LightDef/LightDefCommon.h"
+
+#include <cstring>
+#include <format>
+#include <iostream>
+
+
+using namespace IW4;
+using namespace ::light_def;
+
+namespace
+{
+    constexpr auto MAX_IMAGE_NAME_SIZE = 0x800;
+
+    class LoaderLightDef final : public AssetCreator<AssetLightDef>
+    {
+    public:
+        LoaderLightDef(MemoryManager& memory, ISearchPath& searchPath)
+            : m_memory(memory),
+              m_search_path(searchPath)
+        {
+        }
+
+        AssetCreationResult CreateAsset(const std::string& assetName, AssetCreationContext& context) override
+        {
+            const auto filename = GetFileNameForAsset(assetName);
+            const auto file = m_search_path.Open(filename);
+            if (!file.IsOpen())
+                return AssetCreationResult::NoAction();
+
+            const auto imageNameSize = file.m_length - sizeof(char) - sizeof(char);
+            if (imageNameSize < 0 || imageNameSize > MAX_IMAGE_NAME_SIZE)
+                return AssetCreationResult::Failure();
+
+            auto* lightDef = m_memory.Alloc<GfxLightDef>();
+            lightDef->name = m_memory.Dup(assetName.c_str());
+
+            AssetRegistration<AssetLightDef> registration(assetName, lightDef);
+
+            std::string imageName(static_cast<size_t>(imageNameSize), '\0');
+
+            int8_t samplerState;
+            int8_t lmapLookupStart;
+            file.m_stream->read(reinterpret_cast<char*>(&samplerState), sizeof(int8_t));
+            file.m_stream->read(&imageName[0], static_cast<size_t>(imageNameSize));
+            file.m_stream->read(reinterpret_cast<char*>(&lmapLookupStart), sizeof(int8_t));
+
+            auto* imageDependency = context.LoadDependency<AssetImage>(imageName);
+            if (!imageDependency)
+            {
+                std::cerr << std::format("Could not load GfxLightDef \"{}\" due to missing image \"{}\"\n", assetName, imageName);
+                return AssetCreationResult::Failure();
+            }
+            registration.AddDependency(imageDependency);
+
+            lightDef->attenuation.samplerState = samplerState;
+            lightDef->attenuation.image = imageDependency->Asset();
+            lightDef->lmapLookupStart = static_cast<int>(static_cast<uint8_t>(lmapLookupStart));
+
+            return AssetCreationResult::Success(context.AddAsset(std::move(registration)));
+        }
+
+    private:
+        MemoryManager& m_memory;
+        ISearchPath& m_search_path;
+    };
+} // namespace
+
+namespace IW4
+{
+    std::unique_ptr<AssetCreator<AssetLightDef>> CreateLightDefLoader(MemoryManager& memory, ISearchPath& searchPath)
+    {
+        return std::make_unique<LoaderLightDef>(memory, searchPath);
+    }
+} // namespace IW4