Add hit sound

asset/asset.go

@@ -6,10 +6,12 @@ import (
 	"image"
 	"io"
 
+	_ "image/png"
+
 	"github.com/hajimehoshi/ebiten/v2"
 	"github.com/hajimehoshi/ebiten/v2/audio"
 	"github.com/hajimehoshi/ebiten/v2/audio/vorbis"
-	_ "image/png"
+	"github.com/hajimehoshi/ebiten/v2/audio/wav"
 )
 
 //go:embed image sound
@@ -21,8 +23,12 @@ var ImgPlayer = LoadImage("image/player.png")
 
 const sampleRate = 44100
 
-var audioContext = audio.NewContext(sampleRate)
-var SoundMusic = LoadOGG(audioContext, "sound/an_individual_who_fights_on_roads.ogg", true)
+var (
+	audioContext = audio.NewContext(sampleRate)
+	SoundHitP1   = LoadWAV(audioContext, "sound/hit.wav")
+	SoundHitP2   = LoadWAV(audioContext, "sound/hit.wav")
+	SoundMusic   = LoadOGG(audioContext, "sound/an_individual_who_fights_on_roads.ogg", true)
+)
 
 func LoadImage(p string) *ebiten.Image {
 	f, err := FS.Open(p)
@@ -47,6 +53,33 @@ func LoadBytes(p string) []byte {
 	return b
 }
 
+func LoadWAV(context *audio.Context, p string) *audio.Player {
+	f, err := FS.Open(p)
+	if err != nil {
+		panic(err)
+	}
+	defer f.Close()
+
+	stream, err := wav.DecodeWithSampleRate(sampleRate, f)
+	if err != nil {
+		panic(err)
+	}
+
+	player, err := context.NewPlayer(stream)
+	if err != nil {
+		panic(err)
+	}
+
+	// Workaround to prevent delays when playing for the first time.
+	player.SetVolume(0)
+	player.Play()
+	player.Pause()
+	player.Rewind()
+	player.SetVolume(1)
+
+	return player
+}
+
 func LoadOGG(context *audio.Context, p string, loop bool) *audio.Player {
 	b := LoadBytes(p)
 

game/game.go

@@ -543,6 +543,15 @@ func (g *Game) UpdateByInputs(inputs []InputBits) {
 						if g.Players[opp].Action != component.ActionBlock {
 							opponent.Action = component.ActionStunned
 							opponent.ActionTicksLeft = stunTicks
+
+							// Play hit sound.
+							sound := asset.SoundHitP1
+							if i == 1 {
+								sound = asset.SoundHitP2
+							}
+							sound.SetVolume(0.2)
+							sound.Rewind()
+							sound.Play()
 						}
 					}
 				}