feat: add T4 PhysPreset support (#925)

* feat: add T4 PhysPreset support

* chore: slight adjustment to how the max friction constant is named

---------

Co-authored-by: Jan Laupetin <[email protected]>

src/ObjLoading/Game/T4/ObjLoaderT4.cpp

@@ -11,6 +11,8 @@
 #include "Localize/AssetLoaderLocalizeT4.h"
 #include "Maps/MapEntsLoaderT4.h"
 #include "Material/LoaderMaterialT4.h"
+#include "PhysPreset/GdtLoaderPhysPresetT4.h"
+#include "PhysPreset/RawLoaderPhysPresetT4.h"
 #include "RawFile/AssetLoaderRawFileT4.h"
 #include "Weapon/FlameTableLoaderT4.h"
 #include "Weapon/WeaponGdtLoaderT4.h"
@@ -103,6 +105,8 @@ namespace
         collection.AddAssetCreator(font::CreateLoaderT4(memory, searchPath));
         collection.AddAssetCreator(localize::CreateLoaderT4(memory, searchPath, zone));
         collection.AddAssetCreator(map_ents::CreateLoaderT4(memory, searchPath));
+        collection.AddAssetCreator(phys_preset::CreateRawLoaderT4(memory, searchPath, zone));
+        collection.AddAssetCreator(phys_preset::CreateGdtLoaderT4(memory, gdt, zone));
         collection.AddAssetCreator(raw_file::CreateLoaderT4(memory, searchPath));
         collection.AddAssetCreator(weapon::CreateRawLoaderT4(memory, searchPath, zone));
         collection.AddAssetCreator(weapon::CreateGdtLoaderT4(memory, searchPath, gdt, zone));

src/ObjLoading/Game/T4/PhysPreset/GdtLoaderPhysPresetT4.cpp

@@ -0,0 +1,50 @@
+#include "GdtLoaderPhysPresetT4.h"
+
+#include "Game/T4/ObjConstantsT4.h"
+#include "Game/T4/T4.h"
+#include "InfoString/InfoString.h"
+#include "InfoStringLoaderPhysPresetT4.h"
+#include "Utils/Logging/Log.h"
+
+using namespace T4;
+
+namespace
+{
+    class GdtLoaderPhysPreset final : public AssetCreator<AssetPhysPreset>
+    {
+    public:
+        GdtLoaderPhysPreset(MemoryManager& memory, IGdtQueryable& gdt, Zone& zone)
+            : m_gdt(gdt),
+              m_info_string_loader(memory, zone)
+        {
+        }
+
+        AssetCreationResult CreateAsset(const std::string& assetName, AssetCreationContext& context) override
+        {
+            const auto* gdtEntry = m_gdt.GetGdtEntryByGdfAndName(GDF_FILENAME_PHYS_PRESET, assetName);
+            if (gdtEntry == nullptr)
+                return AssetCreationResult::NoAction();
+
+            InfoString infoString;
+            if (!infoString.FromGdtProperties(*gdtEntry))
+            {
+                con::error("Failed to read phys preset gdt entry: \"{}\"", assetName);
+                return AssetCreationResult::Failure();
+            }
+
+            return m_info_string_loader.CreateAsset(assetName, infoString, context);
+        }
+
+    private:
+        IGdtQueryable& m_gdt;
+        phys_preset::InfoStringLoaderT4 m_info_string_loader;
+    };
+} // namespace
+
+namespace phys_preset
+{
+    std::unique_ptr<AssetCreator<AssetPhysPreset>> CreateGdtLoaderT4(MemoryManager& memory, IGdtQueryable& gdt, Zone& zone)
+    {
+        return std::make_unique<GdtLoaderPhysPreset>(memory, gdt, zone);
+    }
+} // namespace phys_preset

src/ObjLoading/Game/T4/PhysPreset/GdtLoaderPhysPresetT4.h

@@ -0,0 +1,14 @@
+#pragma once
+
+#include "Asset/IAssetCreator.h"
+#include "Game/T4/T4.h"
+#include "Gdt/IGdtQueryable.h"
+#include "SearchPath/ISearchPath.h"
+#include "Utils/MemoryManager.h"
+
+#include <memory>
+
+namespace phys_preset
+{
+    std::unique_ptr<AssetCreator<T4::AssetPhysPreset>> CreateGdtLoaderT4(MemoryManager& memory, IGdtQueryable& gdt, Zone& zone);
+} // namespace phys_preset

src/ObjLoading/Game/T4/PhysPreset/InfoStringLoaderPhysPresetT4.cpp

@@ -0,0 +1,94 @@
+#include "InfoStringLoaderPhysPresetT4.h"
+
+#include "Game/T4/InfoString/InfoStringToStructConverter.h"
+#include "Game/T4/ObjConstantsT4.h"
+#include "Game/T4/PhysPreset/PhysPresetFields.h"
+#include "Game/T4/T4.h"
+#include "Utils/Logging/Log.h"
+
+#include <algorithm>
+#include <cassert>
+#include <type_traits>
+
+using namespace T4;
+
+namespace
+{
+    class InfoStringToPhysPresetConverter final : public InfoStringToStructConverter
+    {
+    protected:
+        bool ConvertExtensionField(const cspField_t& field, const std::string& value) override
+        {
+            assert(false);
+            return false;
+        }
+
+    public:
+        InfoStringToPhysPresetConverter(const InfoString& infoString,
+                                        PhysPresetInfo& physPreset,
+                                        ZoneScriptStrings& zoneScriptStrings,
+                                        MemoryManager& memory,
+                                        AssetCreationContext& context,
+                                        AssetRegistration<AssetPhysPreset>& registration,
+                                        const cspField_t* fields,
+                                        const size_t fieldCount)
+            : InfoStringToStructConverter(infoString, &physPreset, zoneScriptStrings, memory, context, registration, fields, fieldCount)
+        {
+        }
+    };
+
+    void CopyFromPhysPresetInfo(const PhysPresetInfo& physPresetInfo, PhysPreset& physPreset)
+    {
+        physPreset.mass = std::clamp(physPresetInfo.mass, 1.0f, 2000.0f) * 0.001f;
+        physPreset.bounce = physPresetInfo.bounce;
+
+        if (physPresetInfo.isFrictionInfinity != 0)
+            physPreset.friction = PHYS_PRESET_MAX_FRICTION;
+        else
+            physPreset.friction = physPresetInfo.friction;
+
+        physPreset.bulletForceScale = physPresetInfo.bulletForceScale;
+        physPreset.explosiveForceScale = physPresetInfo.explosiveForceScale;
+        physPreset.sndAliasPrefix = physPresetInfo.sndAliasPrefix;
+        physPreset.piecesSpreadFraction = physPresetInfo.piecesSpreadFraction;
+        physPreset.piecesUpwardVelocity = physPresetInfo.piecesUpwardVelocity;
+        physPreset.canFloat = physPresetInfo.canFloat;
+        physPreset.gravityScale = std::clamp(physPresetInfo.gravityScale, 0.01f, 10.0f);
+    }
+} // namespace
+
+namespace phys_preset
+{
+    InfoStringLoaderT4::InfoStringLoaderT4(MemoryManager& memory, Zone& zone)
+        : m_memory(memory),
+          m_zone(zone)
+    {
+    }
+
+    AssetCreationResult InfoStringLoaderT4::CreateAsset(const std::string& assetName, const InfoString& infoString, AssetCreationContext& context)
+    {
+        auto* physPreset = m_memory.Alloc<PhysPreset>();
+        physPreset->name = m_memory.Dup(assetName.c_str());
+
+        AssetRegistration<AssetPhysPreset> registration(assetName, physPreset);
+
+        PhysPresetInfo physPresetInfo{};
+        InfoStringToPhysPresetConverter converter(infoString,
+                                                  physPresetInfo,
+                                                  m_zone.m_script_strings,
+                                                  m_memory,
+                                                  context,
+                                                  registration,
+                                                  phys_preset_fields,
+                                                  std::extent_v<decltype(phys_preset_fields)>);
+        if (!converter.Convert())
+        {
+            con::error("Failed to parse phys preset: \"{}\"", assetName);
+            return AssetCreationResult::Failure();
+        }
+
+        CopyFromPhysPresetInfo(physPresetInfo, *physPreset);
+
+        return AssetCreationResult::Success(context.AddAsset(std::move(registration)));
+    }
+} // namespace phys_preset

src/ObjLoading/Game/T4/PhysPreset/InfoStringLoaderPhysPresetT4.h

@@ -0,0 +1,20 @@
+#pragma once
+
+#include "Asset/AssetCreationContext.h"
+#include "Asset/AssetCreationResult.h"
+#include "InfoString/InfoString.h"
+
+namespace phys_preset
+{
+    class InfoStringLoaderT4
+    {
+    public:
+        InfoStringLoaderT4(MemoryManager& memory, Zone& zone);
+
+        AssetCreationResult CreateAsset(const std::string& assetName, const InfoString& infoString, AssetCreationContext& context);
+
+    private:
+        MemoryManager& m_memory;
+        Zone& m_zone;
+    };
+} // namespace phys_preset

src/ObjLoading/Game/T4/PhysPreset/RawLoaderPhysPresetT4.cpp

@@ -0,0 +1,52 @@
+#include "RawLoaderPhysPresetT4.h"
+
+#include "Game/T4/ObjConstantsT4.h"
+#include "Game/T4/T4.h"
+#include "InfoString/InfoString.h"
+#include "InfoStringLoaderPhysPresetT4.h"
+#include "PhysPreset/PhysPresetCommon.h"
+#include "Utils/Logging/Log.h"
+
+using namespace T4;
+
+namespace
+{
+    class RawLoaderPhysPreset final : public AssetCreator<AssetPhysPreset>
+    {
+    public:
+        RawLoaderPhysPreset(MemoryManager& memory, ISearchPath& searchPath, Zone& zone)
+            : m_search_path(searchPath),
+              m_info_string_loader(memory, zone)
+        {
+        }
+
+        AssetCreationResult CreateAsset(const std::string& assetName, AssetCreationContext& context) override
+        {
+            const auto fileName = phys_preset::GetFileNameForAssetName(assetName);
+            const auto file = m_search_path.Open(fileName);
+            if (!file.IsOpen())
+                return AssetCreationResult::NoAction();
+
+            InfoString infoString;
+            if (!infoString.FromStream(INFO_STRING_PREFIX_PHYS_PRESET, *file.m_stream))
+            {
+                con::error("Could not parse as info string file: \"{}\"", fileName);
+                return AssetCreationResult::Failure();
+            }
+
+            return m_info_string_loader.CreateAsset(assetName, infoString, context);
+        }
+
+    private:
+        ISearchPath& m_search_path;
+        phys_preset::InfoStringLoaderT4 m_info_string_loader;
+    };
+} // namespace
+
+namespace phys_preset
+{
+    std::unique_ptr<AssetCreator<AssetPhysPreset>> CreateRawLoaderT4(MemoryManager& memory, ISearchPath& searchPath, Zone& zone)
+    {
+        return std::make_unique<RawLoaderPhysPreset>(memory, searchPath, zone);
+    }
+} // namespace phys_preset

src/ObjLoading/Game/T4/PhysPreset/RawLoaderPhysPresetT4.h

@@ -0,0 +1,13 @@
+#pragma once
+
+#include "Asset/IAssetCreator.h"
+#include "Game/T4/T4.h"
+#include "SearchPath/ISearchPath.h"
+#include "Utils/MemoryManager.h"
+
+#include <memory>
+
+namespace phys_preset
+{
+    std::unique_ptr<AssetCreator<T4::AssetPhysPreset>> CreateRawLoaderT4(MemoryManager& memory, ISearchPath& searchPath, Zone& zone);
+} // namespace phys_preset