add sounds

go.mod

@@ -13,6 +13,7 @@ require (
 	github.com/fsnotify/fsnotify v1.6.0 // indirect
 	github.com/go-gl/glfw/v3.3/glfw v0.0.0-20221017161538-93cebf72946b // indirect
 	github.com/hajimehoshi/file2byteslice v1.0.0 // indirect
+	github.com/hajimehoshi/oto/v2 v2.4.1 // indirect
 	github.com/jezek/xgb v1.1.0 // indirect
 	github.com/pmezard/go-difflib v1.0.0 // indirect
 	golang.org/x/exp v0.0.0-20190731235908-ec7cb31e5a56 // indirect

go.sum

@@ -31,6 +31,8 @@ github.com/hajimehoshi/file2byteslice v1.0.0/go.mod h1:CqqAHp7Dk/AqQiwuhV1yT2334
 github.com/hajimehoshi/go-mp3 v0.3.3/go.mod h1:qMJj/CSDxx6CGHiZeCgbiq2DSUkbK0UbtXShQcnfyMM=
 github.com/hajimehoshi/oto v0.6.1/go.mod h1:0QXGEkbuJRohbJaxr7ZQSxnju7hEhseiPx2hrh6raOI=
 github.com/hajimehoshi/oto/v2 v2.3.1/go.mod h1:seWLbgHH7AyUMYKfKYT9pg7PhUu9/SisyJvNTT+ASQo=
+github.com/hajimehoshi/oto/v2 v2.4.1 h1:iTfZSulqdmQ5Hh4tVyVzNnK3aA4SgjbDapSM0YH3Lc4=
+github.com/hajimehoshi/oto/v2 v2.4.1/go.mod h1:guyF8uIgSrchrKewS1E6Xyx7joUbKOi4g9W7vpcYBSc=
 github.com/jakecoffman/cp v1.2.1/go.mod h1:JjY/Fp6d8E1CHnu74gWNnU0+b9VzEdUVPoJxg2PsTQg=
 github.com/jezek/xgb v1.0.1 h1:YUGhxps0aR7J2Xplbs23OHnV1mWaxFVcOl9b+1RQkt8=
 github.com/jezek/xgb v1.0.1/go.mod h1:nrhwO0FX/enq75I7Y7G8iN1ubpSGZEiA3v9e9GyRFlk=

main.go

@@ -5,6 +5,7 @@ import (
 	"embed"
 	"image"
 	_ "image/png"
+	"io"
 	"io/fs"
 	"log"
 	"math"
@@ -13,6 +14,9 @@ import (
 
 	"github.com/hajimehoshi/ebiten/v2"
 
+	"github.com/hajimehoshi/ebiten/v2/audio"
+	"github.com/hajimehoshi/ebiten/v2/audio/wav"
+
 	"crg.eti.br/go/config"
 	_ "crg.eti.br/go/config/ini"
 )
@@ -37,24 +41,39 @@ type Config struct {
 
 var (
 	mSprite map[string]*ebiten.Image
+	mSound  map[string][]byte
 
-	//go:embed assets/*.png
+	//go:embed assets/*
 	f embed.FS
 
 	width  = 32
 	height = 32
 
 	cfg = &Config{}
+
+	currentplayer *audio.Player = nil
 )
 
 func (m *neko) Layout(outsideWidth, outsideHeight int) (int, int) {
 	return width, height
 }
 
+func playsound(sound []byte) {
+	if currentplayer != nil && currentplayer.IsPlaying() {
+		currentplayer.Close()
+	}
+	currentplayer = audio.CurrentContext().NewPlayerFromBytes(sound)
+	currentplayer.SetVolume(.3)
+	currentplayer.Play()
+}
+
 func (m *neko) Update() error {
 	mx, my := ebiten.CursorPosition()
 
 	m.count++
+	if m.state == 10 && m.count == m.min {
+		playsound(mSound["idle3"])
+	}
 
 	// sw, sh := ebiten.ScreenSizeInFullscreen()
 
@@ -103,6 +122,9 @@ func (m *neko) Update() error {
 		return nil
 	}
 
+	if m.state >= 13 {
+		playsound(mSound["awake"])
+	}
 	m.state = 0
 	m.min = 8
 	m.max = 16
@@ -179,6 +201,10 @@ func (m *neko) Draw(screen *ebiten.Image) {
 
 		if m.state > 0 {
 			m.state++
+			switch m.state {
+			case 13:
+				playsound(mSound["sleep"])
+			}
 		}
 	}
 
@@ -204,19 +230,42 @@ func main() {
 	height *= int(cfg.Scale)
 
 	mSprite = make(map[string]*ebiten.Image)
+	mSound = make(map[string][]byte)
 
 	a, _ := fs.ReadDir(f, "assets")
 	for _, v := range a {
 		data, _ := f.ReadFile("assets/" + v.Name())
 
+		name := strings.TrimSuffix(v.Name(), filepath.Ext(v.Name()))
+		ext := filepath.Ext(v.Name())
+
+		switch ext {
+		case ".png":
 			img, _, err := image.Decode(bytes.NewReader(data))
 			if err != nil {
 				log.Fatal(err)
 			}
 
-		name := strings.TrimSuffix(v.Name(), filepath.Ext(v.Name()))
 			mSprite[name] = ebiten.NewImageFromImage(img)
+		case ".wav":
+			stream, err := wav.DecodeWithSampleRate(44100, bytes.NewReader(data))
+			if err != nil {
+				log.Fatal(err)
 			}
+			data, err := io.ReadAll(stream)
+			if err != nil {
+				log.Fatal(err)
+			}
+
+			mSound[name] = data
+		}
+	}
+
+	audio.NewContext(44100)
+
+	// Workaround: for some reason playing the first sound can incur significant delay.
+	// So let's do this at the start.
+	audio.CurrentContext().NewPlayerFromBytes([]byte{}).Play()
 
 	sw, sh := ebiten.ScreenSizeInFullscreen()
 	n := &neko{