A sample to play a wav file

main.go

package main

import (
        "log"
        "os"

        "github.com/hajimehoshi/ebiten"
        "github.com/hajimehoshi/ebiten/audio"
        "github.com/hajimehoshi/ebiten/audio/wav"
        "github.com/hajimehoshi/ebiten/ebitenutil"
)

const (
        screenWidth  = 320
        screenHeight = 240
        sampleRate   = 44100
)

var (
        audioContext *audio.Context
        audioPlayer  *audio.Player
)

func init() {
        var err error
        audioContext, err = audio.NewContext(sampleRate)
        if err != nil {
                log.Fatal(err)
        }

        f, err := os.Open("jab.wav")
        if err != nil {
                log.Fatal(err)
        }

        d, err := wav.Decode(audioContext, f)
        if err != nil {
                log.Fatal(err)
        }

        audioPlayer, err = audio.NewPlayer(audioContext, d)
        if err != nil {
                log.Fatal(err)
        }
}

func update(screen *ebiten.Image) error {
        if ebiten.IsKeyPressed(ebiten.KeyP) && !audioPlayer.IsPlaying() {
                audioPlayer.Rewind()
                audioPlayer.Play()
        }
        if err := audioContext.Update(); err != nil {
                        return err
        }
        if ebiten.IsRunningSlowly() {
                return nil
        }
        ebitenutil.DebugPrint(screen, "Press P to play the wav")
        return nil
}

func main() {
        if err := ebiten.Run(update, screenWidth, screenHeight, 2, "WAV (Ebiten Demo)"); err != nil {
                log.Fatal(err)
        }
}