func (p *Player) updateSE() error {
if seBytes == nil {
return nil
}
if !ebiten.IsKeyPressed(ebiten.KeyP) {
keyState[ebiten.KeyP] = 0
return nil
}
keyState[ebiten.KeyP]++
if keyState[ebiten.KeyP] != 1 {
return nil
}
sePlayer, err := audio.NewPlayerFromBytes(audioContext, seBytes)
if err != nil {
return err
}
return sePlayer.Play()
}
func addNote() error {
size := sampleRate / ebiten.FPS
notes := []float64{freqC, freqD, freqE, freqF, freqG, freqA * 2, freqB * 2}
defer func() {
scoreIndex++
scoreIndex %= len(score)
}()
l := make([]int16, size*30)
r := make([]int16, size*30)
note := score[scoreIndex]
for note == ' ' {
scoreIndex++
scoreIndex %= len(score)
note = score[scoreIndex]
}
freq := 0.0
switch {
case note == 'R':
freq = 0
case note <= 'B':
freq = notes[int(note)+len(notes)-int('C')]
default:
freq = notes[note-'C']
}
vol := 1.0 / 16.0
square(l, vol, freq, 0.25)
square(r, vol, freq, 0.25)
b := toBytes(l, r)
p, err := audio.NewPlayerFromBytes(audioContext, b)
if err != nil {
return err
}
if err := p.Play(); err != nil {
return err
}
return nil
}