Added background music (defined on a per-map basis)

1 files changed, 36 insertions, 0 deletions

@@ -52,6 +52,16 @@ public:
 
 using chunk_ptr = std::unique_ptr<Mix_Chunk, chunk_deleter>;
 
+class music_deleter {
+public:
+
+  void operator()(Mix_Music* music) {
+    Mix_FreeMusic(music);
+  }
+};
+
+using music_ptr = std::unique_ptr<Mix_Music, music_deleter>;
+
 // MUST create the Renderer first!
 class Mixer {
 public:
@@ -62,12 +72,38 @@ public:
 
   void stopChannel(int channel);
 
+  // name is the name of the file, not containing the extension
+  // ms is the time in milliseconds to fade in
+  void playMusic(std::string_view name, int ms = 0);
+
+  bool isPlayingMusic() const { return !playingTrack_.empty(); }
+
+  const std::string& getPlayingTrack() const { return playingTrack_; }
+
+  void fadeoutMusic(int ms);
+
+  void muteMusic();
+
+  void unmuteMusic();
+
+  bool isMusicMuted() const { return musicMuted_; }
+
+  void pauseMusic();
+
+  void unpauseMusic();
+
 private:
 
   Mix_Chunk* getChunkByFilename(std::string filename);
 
+  Mix_Music* getMusicByName(std::string_view name);
+
   mix_wrapper mix_;
   std::map<std::string, chunk_ptr> sounds_;
+  std::map<std::string, music_ptr> music_;
+  std::string playingTrack_;
+  int musicVolume_ = MIX_MAX_VOLUME;
+  bool musicMuted_ = false;
 };
 
 #endif /* end of include guard: MIXER_H_6DF82000 */