1 files changed, 57 insertions, 1 deletions

@@ -62,9 +62,65 @@ void Muxer::playSoundAtPosition(std::string name, float x, float y) {
 }
 
 void Muxer::setMusicLevel(int level) {
-  ERRCHECK(exploration_event_->setParameterByName("level", level));
+  if (transition_state_ == TransitionState::Pre) {
+    if (level >= 3) {
+      transition_state_ = TransitionState::Transition;
+      ERRCHECK(exploration_event_->stop(FMOD_STUDIO_STOP_ALLOWFADEOUT));
+      ERRCHECK(exploration_event_->release());
+
+      FMOD::Studio::EventDescription* eventDescription = nullptr;
+      ERRCHECK(system_->getEvent("event:/transition", &eventDescription));
+      ERRCHECK(eventDescription->createInstance(&transition_event_));
+      ERRCHECK(transition_event_->start());
+    } else {
+      ERRCHECK(exploration_event_->setParameterByName("level", level));
+    }
+  } else if (transition_state_ == TransitionState::Post) {
+    if (level <= 3) {
+      ERRCHECK(the_world_event_->setParameterByName("level_full", 0));
+    } else {
+      ERRCHECK(the_world_event_->setParameterByName("level_full", level - 3));
+    }
+  }
+}
+
+void Muxer::stopMusic() {
+  switch (transition_state_) {
+    case TransitionState::Pre: {
+      ERRCHECK(exploration_event_->stop(FMOD_STUDIO_STOP_ALLOWFADEOUT));
+      break;
+    }
+    case TransitionState::Transition: {
+      ERRCHECK(transition_event_->stop(FMOD_STUDIO_STOP_ALLOWFADEOUT));
+      break;
+    }
+    case TransitionState::Post: {
+      ERRCHECK(the_world_event_->stop(FMOD_STUDIO_STOP_ALLOWFADEOUT));
+      break;
+    }
+    case TransitionState::Stopped: {
+      // Do nothing.
+      break;
+    }
+  }
+
+  transition_state_ = TransitionState::Stopped;
 }
 
 void Muxer::update() {
+  if (transition_state_ == TransitionState::Transition) {
+    FMOD_STUDIO_PLAYBACK_STATE playbackState;
+    ERRCHECK(transition_event_->getPlaybackState(&playbackState));
+    if (playbackState == FMOD_STUDIO_PLAYBACK_STOPPED) {
+      transition_state_ = TransitionState::Post;
+      transition_event_->release();
+
+      FMOD::Studio::EventDescription* eventDescription = nullptr;
+      ERRCHECK(system_->getEvent("event:/the_world", &eventDescription));
+      ERRCHECK(eventDescription->createInstance(&the_world_event_));
+      ERRCHECK(the_world_event_->start());
+    }
+  }
+
   ERRCHECK(system_->update());
 }