Moved base component from ECS.hpp and added Enabled

headers/Systems/ECS/BuiltinComponents.hpp

@@ -7,11 +7,44 @@
  * obtain one at http://mozilla.org/MPL/2.0/.
  */
 
-#include "../ECS.hpp"
+#ifndef GUARD_TOURMALINE_BUILTIN_COMPONENTS_H
+#define GUARD_TOURMALINE_BUILTIN_COMPONENTS_H
+
+#include <concepts>
+
+namespace Tourmaline::Systems::ECS {
+class World;
+}
 
 namespace Tourmaline::Systems::Components {
-struct Position : public Tourmaline::Systems::ECS::BaseComponent {
+// Base
+struct BaseComponent {
+public:
+  virtual ~BaseComponent() = default;
+
+private:
+  friend class World;
+};
+
+template <typename T>
+concept Component = std::derived_from<T, BaseComponent>;
+
+// Builtin
+struct Position : public BaseComponent {
   Position(double x = 0, double y = 0, double z = 0) : x(x), y(y), z(z) {}
   double x, y, z;
 };
+
+struct Enabled : public BaseComponent {
+  Enabled(Tourmaline::Systems::ECS::World *world) : ownerWorld(world) {}
+
+  [[nodiscard]]
+  bool isEnabled();
+  void setEnabled(bool enable = true);
+
+private:
+  bool enabled = true;
+  Tourmaline::Systems::ECS::World *ownerWorld;
+};
 } // namespace Tourmaline::Systems::Components
+#endif