[Performous-commit] Tapio Vierros : Engine work for duet: now different tracks are analyzed.

[Tapio V. <aa...@us...>]

Author: Tapio Vierros <tap...@gm...>
Date:   Tue Jan 17 21:12:57 2012 +0200

Engine work for duet: now different tracks are analyzed.

Contains some FIXMEs though.

---

 game/engine.hh      |   26 +++++++++++++++++---------
 game/screen_sing.cc |   14 +++++++++-----
 2 files changed, 26 insertions(+), 14 deletions(-)

diff --git a/game/engine.hh b/game/engine.hh
index 7fed62d..7ebeeb6 100644
--- a/game/engine.hh
+++ b/game/engine.hh
@@ -12,13 +12,13 @@
 /// performous engine
 class Engine {
 	Audio& m_audio;
-	VocalTrack& m_vocal;
 	size_t m_time;
 	volatile bool m_quit;
 	Database& m_database;
 	boost::scoped_ptr<boost::thread> m_thread;
 
   public:
+	typedef std::vector<VocalTrack*> VocalTrackPtrs;
 	/// timestepping constant
 	static const double TIMESTEP;
 	/** Construct a new Engine with the players that go with it.
@@ -28,17 +28,24 @@ class Engine {
 	* @param anEnd Analyzers to use (ending iterator)
 	* @param vocal Song to play
 	**/
-	template <typename FwdIt> Engine(Audio& audio, VocalTrack& vocal, FwdIt anBegin, FwdIt anEnd, Database& database):
-	  m_audio(audio), m_vocal(vocal), m_time(), m_quit(), m_database(database)
+	template <typename FwdIt> Engine(Audio& audio, VocalTrackPtrs vocals, FwdIt anBegin, FwdIt anEnd, Database& database):
+	  m_audio(audio), m_time(), m_quit(), m_database(database)
 	{
-		// clear old player information
+		if (vocals.empty())
+			throw std::runtime_error("Engine needs at least one vocal track");
+		// Remove unsensibly long tracks
+		for (VocalTrackPtrs::iterator it = vocals.begin(); it != vocals.end(); )
+			if (!(*it) || (*it)->endTime > 10000.0) it = vocals.erase(it);
+			else ++it;
+		// Clear old player information
 		m_database.cur.clear();
 		m_database.scores.clear();
-		// Only add players if the vocal track has sensible length (not NaN or extremely long)
-		if (vocal.endTime < 10000.0) {
+		size_t i = 0;
+		while (anBegin != anEnd && !vocals.empty()) {
 			// Calculate the space required for pitch frames
-			size_t frames = vocal.endTime / Engine::TIMESTEP;
-			while (anBegin != anEnd) m_database.cur.push_back(Player(vocal, *anBegin++, frames));
+			size_t frames = vocals[i]->endTime / Engine::TIMESTEP;
+			m_database.cur.push_back(Player(*vocals[i], *anBegin++, frames));
+			i = (i+1) % vocals.size();
 		}
 		m_thread.reset(new boost::thread(boost::ref(*this)));
 	}
@@ -53,7 +60,8 @@ class Engine {
 			double timeLeft = m_time * TIMESTEP - t;
 			if (timeLeft != timeLeft || timeLeft > 1.0) timeLeft = 1.0;  // FIXME: Workaround for NaN values and other weirdness (should fix the weirdness instead)
 			if (timeLeft > 0.0) { boost::thread::sleep(now() + std::min(TIMESTEP, timeLeft)); continue; }
-			for (Notes::const_iterator it = m_vocal.notes.begin(); it != m_vocal.notes.end(); ++it) it->power = 0.0f;
+			// FIXME: Implement
+			//for (Notes::const_iterator it = m_vocal.notes.begin(); it != m_vocal.notes.end(); ++it) it->power = 0.0f;
 			std::for_each(m_database.cur.begin(), m_database.cur.end(), boost::bind(&Player::update, _1));
 			++m_time;
 		}
diff --git a/game/screen_sing.cc b/game/screen_sing.cc
index 31ab59c..eeb8240 100644
--- a/game/screen_sing.cc
+++ b/game/screen_sing.cc
@@ -56,12 +56,15 @@ void ScreenSing::enter() {
 	boost::ptr_vector<Analyzer>& analyzers = m_audio.analyzers();
 	reloadGL();
 	// Add a singer layout
+	Engine::VocalTrackPtrs selectedTracks;
+	selectedTracks.push_back(&m_song->getVocalTrack(m_selectedTrack));
 	m_layout_singer.clear();
-	m_layout_singer.push_back(new LayoutSinger(m_song->getVocalTrack(m_selectedTrack), m_database, theme));
+	m_layout_singer.push_back(new LayoutSinger(*selectedTracks.back(), m_database, theme));
 	// Find out if we have multiple vocal tracks and create layouts for them, up to a total of 2
 	std::vector<std::string> tracks = m_song->getVocalTrackNames();
 	for (size_t i = 1; i < std::min((int)tracks.size(), 2); ++i) {
-		m_layout_singer.push_back(new LayoutSinger(m_song->getVocalTrack(tracks[i]), m_database, theme));
+		selectedTracks.push_back(&m_song->getVocalTrack(tracks[i]));
+		m_layout_singer.push_back(new LayoutSinger(*selectedTracks.back(), m_database, theme));
 	}
 	// Load instrument and dance tracks
 	sm->loading(_("Loading instruments..."), 0.8);
@@ -100,12 +103,13 @@ void ScreenSing::enter() {
 			opts.push_back(*it);
 		}
 		m_vocalTrackOpts = ConfigItem(opts); // Create a ConfigItem from the option list
-		if (opts.size() > 1) { // Vocal track changer only if there is options
+		// FIXME: Add a duet option without breaking track selector
+		/*if (opts.size() > 1) { // Vocal track changer only if there is options
 			m_vocalTrackOpts.select(cur); // Set the selection to current track
 			m_menu.add(MenuOption("", _("Change vocal track\n(restart required)"), &m_vocalTrackOpts));
 			m_selectedTrackLocalized = _(m_selectedTrack.c_str());
 			m_menu.back().setDynamicName(m_selectedTrackLocalized); // Set the title to be dynamic
-		}
+		}*/
 	}
 	m_menu.add(MenuOption(_("Quit"), _("Exit to song browser"), "Songs"));
 	m_menu.close();
@@ -113,7 +117,7 @@ void ScreenSing::enter() {
 	double setup_delay = (m_instruments.empty() && m_dancers.empty() ? -1.0 : -5.0);
 	sm->loading(_("Finalizing..."), 0.95);
 	m_audio.playMusic(m_song->music, false, 0.0, setup_delay);
-	m_engine.reset(new Engine(m_audio, m_song->getVocalTrack(m_selectedTrack), analyzers.begin(), analyzers.end(), m_database));
+	m_engine.reset(new Engine(m_audio, selectedTracks, analyzers.begin(), analyzers.end(), m_database));
 	// Notify about broken tracks
 	if (m_song->b0rkedTracks) ScreenManager::getSingletonPtr()->dialog(_("Song contains broken tracks!"));
 	sm->showLogo(false);