1 files changed, 20 insertions, 13 deletions

diff --git a/mwe/ecs-homemade/inc/ComponentManager.h b/mwe/ecs-homemade/inc/ComponentManager.h
index 5b0629f..763c28e 100644
--- a/mwe/ecs-homemade/inc/ComponentManager.h
+++ b/mwe/ecs-homemade/inc/ComponentManager.h
@@ -6,31 +6,38 @@
 #include <vector>
 #include <typeindex>
 #include <memory>
-#include <any>
+#include <utility>
 
 class ComponentManager {
 public:
-	static ComponentManager& GetInstance();
+	static ComponentManager& GetInstance();	//Singleton
 
-	ComponentManager(const ComponentManager&) = delete;
-    ComponentManager(ComponentManager&&) = delete;
-    ComponentManager& operator=(const ComponentManager&) = delete;
-    ComponentManager& operator=(ComponentManager&&) = delete;
+	ComponentManager(const ComponentManager&) = delete;	//Singleton
+    ComponentManager(ComponentManager&&) = delete;	//Singleton
+    ComponentManager& operator=(const ComponentManager&) = delete;	//Singleton
+    ComponentManager& operator=(ComponentManager&&) = delete;	//Singleton
 
 	template <typename T, typename... Args>
-	void AddComponent(std::uint32_t id, Args&&... args);
+	void AddComponent(std::uint32_t id, Args&&... args);	//Add a component
+	//TODO: void DeleteAllComponentsOfId(std::uint32_t id);	//Deletes all components of a specific id
+	//TODO: void DeleteAllComponents();	//Deletes all components
+
 	template <typename T>
-    std::vector<std::reference_wrapper<T>> GetComponentsOfID(std::uint32_t id);
-	/*template <typename T>
-	std::vector<std::uint32_t> GetAllComponentIDs();
+    std::vector<std::reference_wrapper<T>> GetComponentsByID(std::uint32_t id) const;	//Get a vector<> of all components at specific id
 	template <typename T>
-	std::vector<T*> GetAllComponentPointer();*/
+	std::vector<std::pair<std::reference_wrapper<T>, std::uint32_t>> GetComponentsByType() const;	//Get a vector<> of all components of a specific type
 
 private:
-    static ComponentManager mInstance;
+    static ComponentManager mInstance;	//Singleton
 
-    ComponentManager();
+    ComponentManager();	//Singleton
 
+	/*
+	 * The std::unordered_map<std::type_index, std::vector<std::vector<std::unique_ptr<Component>>>> below might seem a bit strange, let me explain this structure:
+	 * The std::unordered_map<> has a key and value. The key is a std::type_index and the value is a std::vector. So, a new std::vector will be created for each new std::type_index.
+	 * The first std::vector<> stores another vector<>. This first vector<> is to bind the entity's id to a component.
+	 * The second std::vector<> stores unique_ptrs. Each component can be gathered via an unique_ptr. This second vector<> allows multiple components of the same std::type_index for one entity (id).
+	 */
 	std::unordered_map<std::type_index, std::vector<std::vector<std::unique_ptr<Component>>>> mComponents;
 };