Creating a templated view class

lib/wal/sources/View/View.hpp

@@ -0,0 +1,35 @@
+//
+// Created by Zoe Roux on 2021-06-02.
+//
+
+
+#pragma once
+
+#include <vector>
+#include <Entity/Entity.hpp>
+
+namespace WAL
+{
+	//! @brief A view caching entities containing requested components
+	template<typename ...Components>
+	class View
+	{
+		//! @brief A list of reference to entities that contains the
+		std::vector<std::reference_wrapper<Entity>> entities;
+
+		explicit View(std::vector<Entity> &entities)
+			: entities()
+		{
+			std::copy_if(entities.begin(), entities.end(), std::back_inserter(this->entities), [](Entity &entity) {
+				return (entity.hasComponent<Components>() && ...);
+			});
+		}
+
+		//! @brief A default copy constructor.
+		View(const View &) = default;
+		//! @brief A default destructor.
+		~View() = default;
+		//! @brief A View is assignable.
+		View &operator=(const View &) = default;
+	};
+}