audio_service.h

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#pragma once
 
#include <engine/audio/sound/instance/sound_instance.h>
#include <engine/audio/sound/resource/sound_resource.h>
#include <engine/audio/sound/sound_type.h>
#include <engine/core/iEngineService.h>
 
#include <memory>
#include <optional>
#include <string>
#include <unordered_map>
#include <vector>
 
class AudioService : public IEngineService {
 public:
  AudioService() = default;
 
  std::optional<std::shared_ptr<SoundResource>> register_sound(
      const std::string& file_path, const std::string& name,
      SoundType type = SoundType::GENERIC);
  bool unregister_sound(const std::string& name);
 
  std::optional<std::shared_ptr<SoundResource>> get_sound_resource(
      const std::string& file_path,
      const std::string& name = "") const noexcept;
 
  std::reference_wrapper<SoundInstance> play_sound(
      std::shared_ptr<SoundResource> sound_resource, float volume = 1.0f,
      bool loop = false);
  std::reference_wrapper<SoundInstance> play_sound(const std::string& name,
                                                   float volume = 1.0f,
                                                   bool loop = false);
 
  void stop_sound(SoundInstance& instance);
  void stop_sound(const std::string& name);
  void stop_all_sounds();
 
  bool has_sound_instance(const std::string& name) const noexcept;
  std::optional<std::reference_wrapper<SoundInstance>> get_sound_instance(
      const std::string& name) const;
  std::vector<std::reference_wrapper<SoundInstance>> get_all_playing_sounds()
      const;
 
  void update();
 
 private:
  std::unordered_map<std::string, std::shared_ptr<SoundResource>>
      sound_resources_;
  std::vector<std::unique_ptr<SoundInstance>> active_instances_;
};