prototype vibe

systems/audio_system.gd

@@ -0,0 +1,113 @@
+extends Node
+
+const SFX_PATHS := {
+  "hit": "res://assets/audio/sfx/hit.wav",
+  "death": "res://assets/audio/sfx/death.wav",
+  "level_up": "res://assets/audio/sfx/level_up.wav",
+  "ability_cast": "res://assets/audio/sfx/ability_cast.wav",
+  "portal_spawn": "res://assets/audio/sfx/portal_spawn.wav",
+  "invasion_alarm": "res://assets/audio/sfx/invasion_alarm.wav",
+  "tavern_damage": "res://assets/audio/sfx/tavern_damage.wav",
+}
+
+const MUSIC_PATHS := {
+  "tavern": "res://assets/audio/music/tavern.wav",
+  "battle": "res://assets/audio/music/battle.wav",
+  "invasion": "res://assets/audio/music/invasion.wav",
+}
+
+const SFX_POOL_SIZE := 8
+
+var sfx_cache: Dictionary = {}
+var music_cache: Dictionary = {}
+var sfx_players: Array[AudioStreamPlayer] = []
+var music_player: AudioStreamPlayer = null
+var current_music: String = ""
+
+func _ready() -> void:
+  for i in range(SFX_POOL_SIZE):
+    var p := AudioStreamPlayer.new()
+    p.volume_db = -6.0
+    add_child(p)
+    sfx_players.append(p)
+  music_player = AudioStreamPlayer.new()
+  music_player.volume_db = -12.0
+  music_player.finished.connect(_on_music_finished)
+  add_child(music_player)
+  _preload_audio()
+  EventBus.attack_executed.connect(_on_attack_executed)
+  EventBus.entity_died.connect(_on_entity_died)
+  EventBus.level_up.connect(_on_level_up)
+  EventBus.portal_spawn.connect(_on_portal_spawn)
+  EventBus.tavern_damaged.connect(_on_tavern_damaged)
+  EventBus.invasion_started.connect(_on_invasion_started)
+  EventBus.invasion_ended.connect(_on_invasion_ended)
+  EventBus.wave_started.connect(_on_wave_started)
+  _play_music("tavern")
+
+func _preload_audio() -> void:
+  for key in SFX_PATHS:
+    var path: String = SFX_PATHS[key]
+    if ResourceLoader.exists(path):
+      var stream: AudioStream = load(path)
+      if stream:
+        sfx_cache[key] = stream
+  for key in MUSIC_PATHS:
+    var path: String = MUSIC_PATHS[key]
+    if ResourceLoader.exists(path):
+      var stream: AudioStream = load(path)
+      if stream is AudioStreamWAV:
+        (stream as AudioStreamWAV).loop_mode = AudioStreamWAV.LOOP_FORWARD
+        (stream as AudioStreamWAV).loop_end = (stream as AudioStreamWAV).data.size() / 2
+      if stream:
+        music_cache[key] = stream
+
+func play_sfx(key: String) -> void:
+  if not sfx_cache.has(key):
+    return
+  for p in sfx_players:
+    if not p.playing:
+      p.stream = sfx_cache[key]
+      p.play()
+      return
+
+func _play_music(key: String) -> void:
+  if current_music == key and music_player.playing:
+    return
+  if not music_cache.has(key):
+    return
+  music_player.stream = music_cache[key]
+  music_player.play()
+  current_music = key
+
+func _on_music_finished() -> void:
+  if current_music != "" and music_cache.has(current_music):
+    music_player.play()
+
+func _on_attack_executed(_attacker, _pos, _dir, _dmg) -> void:
+  play_sfx("hit")
+
+func _on_entity_died(entity: Node) -> void:
+  if entity == PlayerData:
+    return
+  play_sfx("death")
+
+func _on_level_up(_player, _level) -> void:
+  play_sfx("level_up")
+
+func _on_portal_spawn(_portal, _enemies) -> void:
+  play_sfx("portal_spawn")
+
+func _on_tavern_damaged(_current, _max_val) -> void:
+  play_sfx("tavern_damage")
+
+func _on_invasion_started(_enemies) -> void:
+  play_sfx("invasion_alarm")
+  _play_music("invasion")
+
+func _on_invasion_ended(_success) -> void:
+  _play_music("battle")
+
+func _on_wave_started(_wave) -> void:
+  if current_music != "invasion":
+    _play_music("battle")