prefab_service.h

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#pragma once
 
#include <engine/core/iEngineService.h>
#include <engine/public/gameObject.h>
 
#include <functional>
#include <map>
#include <memory>
#include <string>
 
class Scene;
 
using PrefabFactory = std::function<GameObject&(Scene&, const std::string&)>;
 
class PrefabService : public IEngineService {
 public:
  PrefabService() = default;
 
  PrefabService(const PrefabService&) = delete;
  PrefabService& operator=(const PrefabService&) = delete;
  PrefabService(PrefabService&&) = delete;
  PrefabService& operator=(PrefabService&&) = delete;
 
  void register_prefab(const std::string& prefab_type_id,
                       const PrefabFactory& factory);
 
  void unregister_prefab(const std::string& prefab_type_id);
 
  [[nodiscard]] bool has_prefab(const std::string& prefab_type_id) const;
 
  std::reference_wrapper<GameObject> instantiate(
      const std::string& prefab_type_id, Scene& scene, const std::string& name);
 
  [[nodiscard]] std::vector<std::string> get_registered_prefabs() const;
 
  void clear_all();
 
 private:
  std::map<std::string, PrefabFactory> prefab_factories_;
};