Creating a basic view

lib/wal/sources/View/BaseView.hpp

@@ -0,0 +1,50 @@
+//
+// Created by Zoe Roux on 2021-06-03.
+//
+
+
+#pragma once
+
+#include <vector>
+#include <tuple>
+#include <typeindex>
+#include <functional>
+#include "Entity/Entity.hpp"
+
+namespace WAL
+{
+	class BaseView
+	{
+	public:
+		std::vector<std::reference_wrapper<Entity>> entities = {};
+
+		std::vector<std::type_index> types = {};
+
+		size_t size()
+		{
+			return entities.size();
+		}
+
+//		std::vector<std::reference_wrapper<Entity>> &view(const Components &...index) requires(std::is_same_v<Components...>)
+//		{
+//			static std::vector<std::reference_wrapper<Entity>> view;
+//
+//			std::copy_if(this->_entities.begin(), this->_entities.end(), std::back_inserter(view), [&index...](Entity &entity) {
+//				return (entity.hasComponent(index) && ...);
+//			});
+//			return view;
+//		}
+	};
+
+	template<typename ...Components>
+	class View : public BaseView
+	{
+	public:
+		explicit View(std::vector<Entity> &scene)
+		{
+			std::copy_if(scene.begin(), scene.end(), std::back_inserter(this->entities), [](Entity &entity) {
+				return (entity.hasComponent<Components>() && ...);
+			});
+		}
+	};
+}