Add concrete component script field support

engine/include/XCEngine/Scripting/Mono/MonoScriptRuntime.h

@@ -111,6 +111,7 @@ private:
     struct FieldMetadata {
         ScriptFieldType type = ScriptFieldType::None;
         MonoClassField* field = nullptr;
+        MonoClass* componentClass = nullptr;
         bool isEnum = false;
         int32_t enumUnderlyingType = 0;
     };
@@ -154,6 +155,8 @@ private:
     bool DiscoverScriptClasses();
     void DiscoverScriptClassesInImage(const std::string& assemblyName, MonoImage* image);
     bool IsMonoBehaviourSubclass(MonoClass* monoClass) const;
+    bool IsSupportedComponentFieldClass(MonoClass* monoClass) const;
+    bool IsScriptComponentFieldClass(MonoClass* monoClass) const;
 
     FieldMetadata BuildFieldMetadata(MonoClassField* field) const;
 
@@ -174,6 +177,7 @@ private:
     bool ApplyStoredFields(const ScriptRuntimeContext& context, const ClassMetadata& metadata, MonoObject* instance);
     MonoObject* CreateManagedGameObject(uint64_t gameObjectUUID);
     bool HasSerializeFieldAttribute(MonoClassField* field) const;
+    bool TryExtractComponentReference(MonoObject* managedObject, ComponentReference& outReference) const;
     bool TryExtractGameObjectReference(MonoObject* managedObject, GameObjectReference& outReference) const;
     bool TrySetFieldValue(MonoObject* instance, const FieldMetadata& fieldMetadata, const ScriptFieldValue& value);
     bool TryReadFieldValue(MonoObject* instance, const FieldMetadata& fieldMetadata, ScriptFieldValue& outValue) const;

engine/include/XCEngine/Scripting/ScriptField.h

@@ -23,7 +23,8 @@ enum class ScriptFieldType {
     Vector2,
     Vector3,
     Vector4,
-    GameObject
+    GameObject,
+    Component
 };
 
 struct GameObjectReference {
@@ -38,6 +39,20 @@ struct GameObjectReference {
     }
 };
 
+struct ComponentReference {
+    uint64_t gameObjectUUID = 0;
+    uint64_t scriptComponentUUID = 0;
+
+    bool operator==(const ComponentReference& other) const {
+        return gameObjectUUID == other.gameObjectUUID
+            && scriptComponentUUID == other.scriptComponentUUID;
+    }
+
+    bool operator!=(const ComponentReference& other) const {
+        return !(*this == other);
+    }
+};
+
 struct ScriptFieldMetadata {
     std::string name;
     ScriptFieldType type = ScriptFieldType::None;
@@ -99,7 +114,8 @@ using ScriptFieldValue = std::variant<
     Math::Vector2,
     Math::Vector3,
     Math::Vector4,
-    GameObjectReference>;
+    GameObjectReference,
+    ComponentReference>;
 
 struct ScriptFieldDefaultValue {
     std::string fieldName;

engine/include/XCEngine/Scripting/ScriptFieldStorage.h

@@ -70,6 +70,11 @@ struct ScriptFieldTypeResolver<GameObjectReference> {
     static constexpr ScriptFieldType value = ScriptFieldType::GameObject;
 };
 
+template<>
+struct ScriptFieldTypeResolver<ComponentReference> {
+    static constexpr ScriptFieldType value = ScriptFieldType::Component;
+};
+
 class ScriptFieldStorage {
 public:
     template<typename T>