From 3996ccb4e2a0d81500d1b1370b2b97256d1ee465 Mon Sep 17 00:00:00 2001
From: Star Rauchenberger <fefferburbia@gmail.com>
Date: Sat, 12 Mar 2022 09:53:02 -0500
Subject: added transition and the world music

---
 src/main.cpp  |  8 +++++++-
 src/muxer.cpp | 58 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++-
 src/muxer.h   | 12 ++++++++++++
 3 files changed, 76 insertions(+), 2 deletions(-)

(limited to 'src')

diff --git a/src/main.cpp b/src/main.cpp
index cd1a8c2..1805357 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -419,8 +419,12 @@ void setZoom(Game& game, size_t zoom)
     game.muxer.setMusicLevel(0);
   } else if (zoomLevel < 3) {
     game.muxer.setMusicLevel(1);
-  } else {
+  } else if (zoomLevel < 5) {
     game.muxer.setMusicLevel(2);
+  } else if (zoomLevel < 7) {
+    game.muxer.setMusicLevel(3);
+  } else {
+    game.muxer.setMusicLevel(4);
   }
 }
 
@@ -493,6 +497,7 @@ int main(int, char**)
             quit = true;
           } else {
             losing = LoseState::PoppingLamps;
+            game.muxer.stopMusic();
           }
         } else if (e.type == SDL_KEYDOWN)
         {
@@ -505,6 +510,7 @@ int main(int, char**)
                 quit = true;
               } else {
                 losing = LoseState::PoppingLamps;
+                game.muxer.stopMusic();
               }
 
               break;
diff --git a/src/muxer.cpp b/src/muxer.cpp
index 5b09ef8..3450187 100644
--- a/src/muxer.cpp
+++ b/src/muxer.cpp
@@ -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());
 }
diff --git a/src/muxer.h b/src/muxer.h
index f99cce4..b1a5b26 100644
--- a/src/muxer.h
+++ b/src/muxer.h
@@ -15,6 +15,13 @@ public:
 
 using fmod_system_ptr = std::unique_ptr<FMOD::Studio::System, fmod_system_deleter>;
 
+enum class TransitionState {
+  Pre,
+  Transition,
+  Post,
+  Stopped
+};
+
 class Muxer {
 public:
   Muxer();
@@ -25,11 +32,16 @@ public:
 
   void setMusicLevel(int level);
 
+  void stopMusic();
+
   void update();
 
 private:
   fmod_system_ptr system_;
   FMOD::Studio::EventInstance* exploration_event_;
+  FMOD::Studio::EventInstance* transition_event_;
+  FMOD::Studio::EventInstance* the_world_event_;
+  TransitionState transition_state_ = TransitionState::Pre;
 };
 
 #endif /* end of include guard: MUXER_H_3146C802 */
-- 
cgit 1.4.1