system.hpp

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#pragma once
 
#include "../constants.hpp"
#include <set>
 
#include "registry.hpp"
 
namespace Engine {
    class App; // Définition en avance. Pas possible d'inclure app.hpp pour éviter les dépendances circulaires
}
 
namespace Engine::ECS {
    class System {
        // On veut que App puisse accéder aux champs private du System
        friend class Engine::App;
 
        private:
            Registry* mRegistry;
            Engine::App* mApp;

            bool mPaused = false;
 
        public:
            Registry& GetRegistry() { return *mRegistry; }
            Engine::App& GetApp() { return *mApp; }

            void Resume() { mPaused = false; }
            void Pause() { mPaused = true; }
            bool IsPaused() { return mPaused; }
 
            virtual ~System() = default;

            virtual void OnInit() {}
            virtual void OnFixedUpdate(float deltaTime) {}
            virtual void OnUpdate(float deltaTime) {}
            virtual void OnRender(float alpha = 0.0f) {}
            virtual void OnUIRender() {}
            virtual void OnLateUpdate(float deltaTime) {}
    };
}