void PlayingState::Play(microseconds_t delta_microseconds) {
// Move notes, time tracking, everything
// delta_microseconds = 0 means, that we are on pause
MidiEventListWithTrackId evs = m_state.midi->Update(delta_microseconds);
// These cycle is for keyboard updates (not falling keys)
const size_t length = evs.size();
for(size_t i = 0; i < length; ++i) {
const size_t &track_id = evs[i].first;
const MidiEvent &ev = evs[i].second;
// Draw refers to the keys lighting up (automatically) -- not necessarily
// the falling notes. The KeyboardDisplay object contains its own logic
// to decide how to draw the falling notes
bool draw = false;
bool play = false;
switch (m_state.track_properties[track_id].mode) {
case Track::ModeNotPlayed: draw = false; play = false; break;
case Track::ModePlayedButHidden: draw = false; play = true; break;
case Track::ModeYouPlay: draw = false; play = false; break;
case Track::ModeYouPlaySilently: draw = false; play = false; break;
case Track::ModeLearning: draw = false; play = false; break;
case Track::ModeLearningSilently: draw = false; play = false; break;
case Track::ModePlayedAutomatically: draw = true; play = true; break;
case Track::ModeCount: break;
}
// Even in "You Play" tracks, we have to play the non-note
// events as per usual.
if (m_state.track_properties[track_id].mode
&& ev.Type() != MidiEventType_NoteOn
&& ev.Type() != MidiEventType_NoteOff)
play = true;
if (ev.Type() == MidiEventType_NoteOn || ev.Type() == MidiEventType_NoteOff) {
int vel = ev.NoteVelocity();
const string name = MidiEvent::NoteName(ev.NoteNumber());
bool active = (vel > 0);
// Display pressed or released a key based on information from a MIDI-file.
// If this line is deleted, than no notes will be pressed automatically.
// It is not related to falling notes.
if (draw)
m_keyboard->SetKeyActive(name, active, m_state.track_properties[track_id].color);
filePressedKey(ev.NoteNumber(), active, track_id);
}
if (play && m_state.midi_out)
{
// Clone event
MidiEvent ev_out = ev;
int vel = ev.NoteVelocity();
// Scale note's volume before playing
ev_out.SetVelocity(vel * m_state.base_volume);
m_state.midi_out->Write(ev_out);
}
}
}
void TitleState::PlayDevicePreview(microseconds_t delta_microseconds) {
if (!m_output_tile->IsPreviewOn())
return;
if (!m_state.midi_out)
return;
MidiEventListWithTrackId evs = m_state.midi->Update(delta_microseconds);
for (MidiEventListWithTrackId::const_iterator i = evs.begin(); i != evs.end(); ++i) {
m_state.midi_out->Write(i->second);
}
}
void TrackSelectionState::PlayTrackPreview(microseconds_t delta_microseconds)
{
if (!m_preview_on) return;
MidiEventListWithTrackId evs = m_state.midi->Update(delta_microseconds);
for (MidiEventListWithTrackId::const_iterator i = evs.begin(); i != evs.end(); ++i)
{
const MidiEvent &ev = i->second;
if (i->first != m_preview_track_id) continue;
if (m_state.midi_out) m_state.midi_out->Write(ev);
}
}
