Add sound effect

main.go

@@ -5,20 +5,23 @@ import (
 	"fmt"
 	"image"
 	"image/color"
+	"io"
 
 	"github.com/clktmr/n64/drivers/cartfs"
 	"github.com/clktmr/n64/drivers/controller"
 	"github.com/clktmr/n64/drivers/display"
 	"github.com/clktmr/n64/drivers/draw"
+	"github.com/clktmr/n64/drivers/rspq/mixer"
 	"github.com/clktmr/n64/fonts/gomono12"
 	_ "github.com/clktmr/n64/machine"
+	"github.com/clktmr/n64/rcp/audio"
 	"github.com/clktmr/n64/rcp/serial/joybus"
 	"github.com/clktmr/n64/rcp/texture"
 	"github.com/clktmr/n64/rcp/video"
 )
 
 var (
-	//go:embed gopher-anim.CI8
+	//go:embed gopher-anim.CI8 squeak.pcm_s16be
 	_tutorialFiles embed.FS
 	tutorialFiles  cartfs.FS = cartfs.Embed(_tutorialFiles)
 )
@@ -53,6 +56,20 @@ func main() {
 	gopherRect := image.Rect(0, 0, 128, 128)
 	blows := 0
 
+	audio.Start(48000)
+	mixer.Init()
+
+	go func() {
+		audio.Buffer.ReadFrom(mixer.Output)
+	}()
+
+	squeakFile, err := tutorialFiles.Open("squeak.pcm_s16be")
+	if err != nil {
+		panic(err)
+	}
+	squeakReader := squeakFile.(io.ReadSeeker)
+	squeakSource := mixer.NewSource(squeakReader, 16000)
+
 	for {
 		fb := display.Swap() // Blocks until next VBlank
 		input := <-controllers
@@ -71,6 +88,8 @@ func main() {
 		if blows < 8 {
 			if input[0].Pressed()&joybus.ButtonA != 0 {
 				blows++
+				squeakReader.Seek(0, io.SeekStart)
+				mixer.SetSource(0, squeakSource)
 			}
 			if input[0].Down()&joybus.ButtonA != 0 {
 				gopherFrame.X += 128 // blowing gopher