sceneConcept.hpp

#pragma once
 
#include <concepts>
#include <optional>
 
#include "GameEngine.hpp"
 
namespace rtk {
template <typename T>
concept SceneIdentifier = std::is_enum_v<T>;
 
template <typename T, typename TSceneId, typename TInput>
concept Scene =
    SceneIdentifier<TSceneId> &&
    requires(T &scene, EngineContext &context, const TInput &input, float dt) {
      { T::Type } -> std::convertible_to<TSceneId>;
      { scene.onEnter(context) } -> std::same_as<void>;
      {
        scene.onUpdate(context, input, dt)
      } -> std::same_as<std::optional<TSceneId>>;
      { scene.onExit(context) } -> std::same_as<void>;
    };
 
} // namespace rtk