83 lines
1.8 KiB
Go
83 lines
1.8 KiB
Go
package Sound
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import (
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"log"
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"github.com/OpenDiablo2/OpenDiablo2/Common"
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"github.com/hajimehoshi/ebiten/audio"
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"github.com/hajimehoshi/ebiten/audio/wav"
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)
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// Manager provides sound
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type Manager struct {
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fileProvider Common.FileProvider
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audioContext *audio.Context // The Audio context
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bgmAudio *audio.Player // The audio player
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lastBgm string
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sfxVolume float64
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bgmVolume float64
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}
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// CreateManager creates a sound provider
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func CreateManager(fileProvider Common.FileProvider) *Manager {
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result := &Manager{
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fileProvider: fileProvider,
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}
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audioContext, err := audio.NewContext(44100)
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if err != nil {
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log.Fatal(err)
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}
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result.audioContext = audioContext
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return result
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}
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// PlayBGM plays an infinitely looping background track
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func (v *Manager) PlayBGM(song string) {
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if v.lastBgm == song {
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return
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}
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v.lastBgm = song
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if song == "" && v.bgmAudio != nil && v.bgmAudio.IsPlaying() {
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_ = v.bgmAudio.Pause()
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return
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}
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go func() {
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if v.bgmAudio != nil {
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err := v.bgmAudio.Close()
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if err != nil {
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log.Panic(err)
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}
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}
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audioData := v.fileProvider.LoadFile(song)
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d, err := wav.Decode(v.audioContext, audio.BytesReadSeekCloser(audioData))
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if err != nil {
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log.Fatal(err)
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}
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s := audio.NewInfiniteLoop(d, d.Length())
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v.bgmAudio, err = audio.NewPlayer(v.audioContext, s)
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if err != nil {
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log.Fatal(err)
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}
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v.bgmAudio.SetVolume(v.bgmVolume)
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// Play the infinite-length stream. This never ends.
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err = v.bgmAudio.Rewind()
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if err != nil {
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panic(err)
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}
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err = v.bgmAudio.Play()
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if err != nil {
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panic(err)
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}
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}()
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}
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func (v *Manager) LoadSoundEffect(sfx string) *SoundEffect {
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result := CreateSoundEffect(sfx, v.fileProvider, v.audioContext, v.sfxVolume)
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return result
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}
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func (v *Manager) SetVolumes(bgmVolume, sfxVolume float64) {
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v.sfxVolume = sfxVolume
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v.bgmVolume = bgmVolume
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}
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