From 5860aa69d6cea02e321d6de768adfddc39cc3b52 Mon Sep 17 00:00:00 2001
From: Henrik Hautakoski <henrik.hautakoski@gmail.com>
Date: Sun, 21 Sep 2025 11:07:51 +0200
Subject: [PATCH] feat: engine audio code

---
 engine/audio/default_manger.go | 35 +++++++++++++
 engine/audio/init.go           | 11 ++++
 engine/audio/library.go        | 16 ++++++
 engine/audio/load.go           | 11 ++++
 engine/audio/manager.go        | 93 ++++++++++++++++++++++++++++++++++
 engine/audio/sound_id.go       |  4 ++
 6 files changed, 170 insertions(+)
 create mode 100644 engine/audio/default_manger.go
 create mode 100644 engine/audio/init.go
 create mode 100644 engine/audio/library.go
 create mode 100644 engine/audio/load.go
 create mode 100644 engine/audio/manager.go
 create mode 100644 engine/audio/sound_id.go

diff --git a/engine/audio/default_manger.go b/engine/audio/default_manger.go
new file mode 100644
index 0000000..21a3921
--- /dev/null
+++ b/engine/audio/default_manger.go
@@ -0,0 +1,35 @@
+package audio
+
+var defaultManager = Manager{}
+
+func LoadLibrary(library *Library) {
+	defaultManager.Load(library)
+}
+
+func Play(id SoundID) {
+	defaultManager.Play(id)
+}
+
+func PlayLooped(id SoundID) {
+	defaultManager.PlayLooped(id)
+}
+
+func Stop(id SoundID) {
+	defaultManager.Stop(id)
+}
+
+func IsPlaying(id SoundID) bool {
+	return defaultManager.IsPlaying(id)
+}
+
+func Pause() {
+	defaultManager.Pause()
+}
+
+func Resume() {
+	defaultManager.Resume()
+}
+
+func Update() {
+	defaultManager.Update()
+}
diff --git a/engine/audio/init.go b/engine/audio/init.go
new file mode 100644
index 0000000..fa3f4be
--- /dev/null
+++ b/engine/audio/init.go
@@ -0,0 +1,11 @@
+package audio
+
+import rl "github.com/gen2brain/raylib-go/raylib"
+
+func Init() {
+	rl.InitAudioDevice()
+}
+
+func Exit() {
+	rl.CloseAudioDevice()
+}
diff --git a/engine/audio/library.go b/engine/audio/library.go
new file mode 100644
index 0000000..0ed3759
--- /dev/null
+++ b/engine/audio/library.go
@@ -0,0 +1,16 @@
+package audio
+
+import rl "github.com/gen2brain/raylib-go/raylib"
+
+// Library is a map of SoundID's and sound data.
+type Library []rl.Sound
+
+func (l Library) Unload() {
+	for _, stream := range l {
+		rl.UnloadSound(stream)
+	}
+}
+
+func (l Library) Get(id SoundID) *rl.Sound {
+	return &l[id]
+}
diff --git a/engine/audio/load.go b/engine/audio/load.go
new file mode 100644
index 0000000..97a56b4
--- /dev/null
+++ b/engine/audio/load.go
@@ -0,0 +1,11 @@
+package audio
+
+import (
+	rl "github.com/gen2brain/raylib-go/raylib"
+)
+
+func LoadFromMemory(typ string, data []byte) rl.Sound {
+	wave := rl.LoadWaveFromMemory(typ, data, int32(len(data)))
+	defer rl.UnloadWave(wave)
+	return rl.LoadSoundFromWave(wave)
+}
diff --git a/engine/audio/manager.go b/engine/audio/manager.go
new file mode 100644
index 0000000..11041f7
--- /dev/null
+++ b/engine/audio/manager.go
@@ -0,0 +1,93 @@
+package audio
+
+import (
+	"slices"
+
+	rl "github.com/gen2brain/raylib-go/raylib"
+)
+
+type audio struct {
+	id  SoundID
+	snd rl.Sound
+}
+
+type Manager struct {
+	library *Library
+	active  []audio
+	paused  bool
+}
+
+func (sm *Manager) Load(library *Library) {
+	sm.library = library
+}
+
+func (sm *Manager) play(id SoundID, looping bool) {
+	snd := sm.library.Get(id)
+
+	alias := rl.LoadSoundAlias(*snd)
+	alias.Stream.Buffer.Looping = looping
+
+	sm.active = append(sm.active, audio{
+		id:  id,
+		snd: alias,
+	})
+
+	rl.PlaySound(alias)
+}
+
+func (sm *Manager) Play(id SoundID) {
+	sm.play(id, false)
+}
+
+func (sm *Manager) PlayLooped(id SoundID) {
+	sm.play(id, true)
+}
+
+func (sm *Manager) Stop(id SoundID) {
+	sm.active = slices.DeleteFunc(sm.active, func(a audio) bool {
+		if a.id == id {
+			rl.StopSound(a.snd)
+			rl.UnloadSoundAlias(a.snd)
+			return true
+		}
+		return false
+	})
+}
+
+func (sm Manager) IsPlaying(id SoundID) bool {
+	return rl.IsSoundPlaying(*sm.library.Get(id))
+}
+
+// Pause all active sounds
+func (sm *Manager) Pause() {
+	sm.paused = true
+	for _, audio := range sm.active {
+		rl.PauseSound(audio.snd)
+	}
+}
+
+// Resume all active sounds.
+func (sm *Manager) Resume() {
+	for _, audio := range sm.active {
+		rl.ResumeSound(audio.snd)
+	}
+	sm.paused = false
+}
+
+func (sm *Manager) Update() {
+	if sm.paused {
+		return
+	}
+
+	active := sm.active[:0]
+
+	for _, audio := range sm.active {
+		if !rl.IsSoundPlaying(audio.snd) {
+			rl.UnloadSoundAlias(audio.snd)
+			continue
+		}
+		active = append(active, audio)
+	}
+
+	sm.active = active
+}
diff --git a/engine/audio/sound_id.go b/engine/audio/sound_id.go
new file mode 100644
index 0000000..a852919
--- /dev/null
+++ b/engine/audio/sound_id.go
@@ -0,0 +1,4 @@
+package audio
+
+type SoundID byte
+