void keyboardchar(int key) {
switch (key) {
case ',': // slow the tempo down
case '<':
tempo *= 0.95;
metronome.setTempo(tempo);
cout << "Tempo = " << tempo << endl;
maxwait = calculateMaxWait(tempo);
break;
case '.': // speed the tempo up
case '>':
tempo *= 1.05;
metronome.setTempo(tempo);
cout << "Tempo = " << tempo << endl;
maxwait = calculateMaxWait(tempo);
break;
case '[': // decrease the beat lag time in determing a chord
lagmaxinsec -= 0.05;
if (lagmaxinsec < 0.05) {
lagmaxinsec = 0.05;
}
cout << "Chord decision time set to " << lagmaxinsec << endl;
maxwait = calculateMaxWait(tempo);
break;
case ']': // increase the beat lag time in determing a chord
lagmaxinsec += 0.05;
if (lagmaxinsec > 60.0/tempo - 0.05) {
lagmaxinsec = 60.0/tempo - 0.05;
}
cout << "Chord decision time set to " << lagmaxinsec << endl;
maxwait = calculateMaxWait(tempo);
break;
default:
cout << "Undefined keyboard command" << endl;
}
}
void initialization(void) {
cout << "Enter a tempo for melody performance: ";
echoKeysOn();
cin >> tempo;
echoKeysOff();
metronome.setTempo(tempo);
maxwait = calculateMaxWait(tempo);
playChord = playChordByRules;
cout << "Using rules for playing accompaniment" << endl;
}