chore: refactor IW4 asset loaders

src/ObjLoading/Game/IW4/Leaderboard/LoaderLeaderboardIW4.cpp

@@ -0,0 +1,52 @@
+#include "AssetLoaderLeaderboardIW4.h"
+#include "Game/IW4/IW4.h"
+#include "JsonLeaderboardDefLoader.h"
+
+#include <cstring>
+#include <format>
+#include <iostream>
+
+using namespace IW4;
+
+namespace
+{
+    class LeaderboardLoader final : public AssetCreator<AssetLeaderboard>
+    {
+    public:
+        LeaderboardLoader(MemoryManager& memory, ISearchPath& searchPath)
+            : m_memory(memory),
+              m_search_path(searchPath)
+        {
+        }
+
+        AssetCreationResult CreateAsset(const std::string& assetName, AssetCreationContext& context) override
+        {
+            const auto file = m_search_path.Open(std::format("leaderboards/{}.json", assetName));
+            if (!file.IsOpen())
+                return AssetCreationResult::NoAction();
+
+            auto* leaderboardDef = m_memory.Alloc<LeaderboardDef>();
+            leaderboardDef->name = m_memory.Dup(assetName.c_str());
+
+            if (!LoadLeaderboardAsJson(*file.m_stream, *leaderboardDef, &m_memory))
+            {
+                std::cerr << std::format("Failed to load leaderboard \"{}\"\n", assetName);
+                return AssetCreationResult::Failure();
+            }
+
+            return AssetCreationResult::Success(context.AddAsset<AssetLeaderboard>(assetName, leaderboardDef));
+        }
+
+    private:
+        MemoryManager& m_memory;
+        ISearchPath& m_search_path;
+    };
+} // namespace
+
+namespace IW4
+{
+    std::unique_ptr<AssetCreator<AssetLeaderboard>> CreateLeaderboardLoader(MemoryManager& memory, ISearchPath& searchPath)
+    {
+        return std::make_unique<LeaderboardLoader>(memory, searchPath);
+    }
+} // namespace IW4