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Merge pull request #40 from pankona/play-sound
play sound
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,154 @@ | ||
| package main | ||
|
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| import ( | ||
| "bytes" | ||
| "io" | ||
| "log" | ||
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| "github.com/hajimehoshi/ebiten/v2/audio" | ||
| "github.com/hajimehoshi/ebiten/v2/audio/mp3" | ||
|
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| _ "embed" | ||
| ) | ||
|
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| type audioPlayer struct { | ||
| audioContext *audio.Context | ||
|
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| players map[string]*audio.Player | ||
| } | ||
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| var aplayer *audioPlayer | ||
|
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| var ( | ||
| //go:embed assets/bakuhatsu.mp3 | ||
| soundBakuhatsuMP3 []byte | ||
| //go:embed assets/beam.mp3 | ||
| soundBeamMP3 []byte | ||
| //go:embed assets/binta.mp3 | ||
| soundBintaMP3 []byte | ||
| //go:embed assets/choice.mp3 | ||
| soundChoiceMP3 []byte | ||
| //go:embed assets/clear.mp3 | ||
| soundClearMP3 []byte | ||
| //go:embed assets/don.mp3 | ||
| soundDonMP3 []byte | ||
| //go:embed assets/gameover.mp3 | ||
| soundGameoverMP3 []byte | ||
| //go:embed assets/gyaa.mp3 | ||
| soundGyaaMP3 []byte | ||
| //go:embed assets/hikkaki.mp3 | ||
| soundHikkakiMP3 []byte | ||
| //go:embed assets/kettei.mp3 | ||
| soundKetteiMP3 []byte | ||
| //go:embed assets/kuzureru.mp3 | ||
| soundKuzureruMP3 []byte | ||
| //go:embed assets/shot.mp3 | ||
| soundShotMP3 []byte | ||
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| //go:embed assets/bgm.mp3 | ||
| soundBgmMP3 []byte | ||
| ) | ||
|
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| const ( | ||
| soundGyaa = "gyaa" // 虫が死んだときの音 | ||
| soundBakuhatsu = "bakuhatsu" // 電波塔が範囲攻撃するときの音 | ||
| soundBeam = "beam" // 塔がビームを撃つときの音 | ||
| soundBinta = "binta" // 手で叩くときの音 | ||
| soundChoice = "choice" // ボタンを押下したときの音 | ||
| soundClear = "clear" // ゲームクリア時の音 | ||
| soundDon = "don" // 建物を置いたときの音 | ||
| soundGameover = "gameover" // ゲームオーバー時の音 | ||
| soundHikkaki = "hikkaki" // 虫が建物を攻撃するときの音 | ||
| soundKettei = "kettei" // Ready ボタンを押したときの音 | ||
| soundKuzureru = "kuzureru" // 建物が壊れるときの音 | ||
| soundShot = "shot" // 緑虫が弾を撃つときの音 | ||
|
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| soundBgm = "bgm" | ||
| ) | ||
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| func getAudioPlayer() *audioPlayer { | ||
| if aplayer != nil { | ||
| return aplayer | ||
| } | ||
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| aplayer = &audioPlayer{ | ||
| audioContext: audio.NewContext(44100), | ||
| players: map[string]*audio.Player{}, | ||
| } | ||
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| sounds := map[string][]byte{ | ||
| soundGyaa: soundGyaaMP3, | ||
| soundBakuhatsu: soundBakuhatsuMP3, | ||
| soundBeam: soundBeamMP3, | ||
| soundBinta: soundBintaMP3, | ||
| soundChoice: soundChoiceMP3, | ||
| soundClear: soundClearMP3, | ||
| soundDon: soundDonMP3, | ||
| soundGameover: soundGameoverMP3, | ||
| soundHikkaki: soundHikkakiMP3, | ||
| soundKettei: soundKetteiMP3, | ||
| soundKuzureru: soundKuzureruMP3, | ||
| soundShot: soundShotMP3, | ||
| } | ||
|
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| for name, buf := range sounds { | ||
| stream, err := mp3.DecodeWithSampleRate(aplayer.audioContext.SampleRate(), bytes.NewReader(buf)) | ||
| if err != nil { | ||
| log.Fatalf("failed to decode mp3: %v", err) | ||
| } | ||
| aplayer.players[name] = mustNewPlayer(aplayer.audioContext, stream) | ||
| } | ||
|
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| stream, err := mp3.DecodeWithSampleRate(aplayer.audioContext.SampleRate(), bytes.NewReader(soundBgmMP3)) | ||
| if err != nil { | ||
| log.Fatalf("failed to decode mp3: %v", err) | ||
| } | ||
| bgmStream := audio.NewInfiniteLoop(stream, 160_000*40.6) | ||
| bgmPlayer := mustNewPlayer(aplayer.audioContext, bgmStream) | ||
| aplayer.players[soundBgm] = bgmPlayer | ||
|
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| return aplayer | ||
| } | ||
|
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| func mustNewPlayer(context *audio.Context, stream io.Reader) *audio.Player { | ||
| player, err := context.NewPlayer(stream) | ||
| if err != nil { | ||
| log.Fatalf("failed to create player: %v", err) | ||
| } | ||
| player.SetVolume(0.2) // なんか音がうるさいのでちっさくしておく | ||
|
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| return player | ||
| } | ||
|
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| func (a *audioPlayer) play(soundname string) { | ||
| // 同時に鳴らす音を制限する | ||
| var active int | ||
| for _, player := range a.players { | ||
| if player.IsPlaying() { | ||
| active++ | ||
| } | ||
| } | ||
| if active >= 5 { | ||
| return | ||
| } | ||
|
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| if player, ok := a.players[soundname]; ok { | ||
| if player.IsPlaying() { | ||
| return | ||
| } | ||
| player.Rewind() | ||
| player.Play() | ||
| return | ||
| } | ||
| } | ||
|
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| func (a *audioPlayer) playBGM() { | ||
| player := a.players[soundBgm] | ||
| player.Rewind() | ||
| player.Play() | ||
| } | ||
|
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| func (a *audioPlayer) stopBGM() { | ||
| player := a.players[soundBgm] | ||
| player.Pause() | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,18 @@ | ||
| <!DOCTYPE html> | ||
| <html lang="en"> | ||
| <head> | ||
| <meta charset="UTF-8"> | ||
| <title>Your Game Title</title> | ||
| </head> | ||
| <body> | ||
| <script src="wasm_exec.js"></script> | ||
| <script> | ||
| const go = new Go(); | ||
| const wasmURL = "main.wasm?v=" + new Date().getTime(); | ||
| WebAssembly.instantiateStreaming(fetch(wasmURL), go.importObject).then(result => { | ||
| go.run(result.instance); | ||
| }); | ||
| </script> | ||
| </body> | ||
| </html> | ||
|
|
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