translation improvements

Interact/dialogue/text_to_speech.gd

@@ -1,28 +1,48 @@
 extends Node
 
 var voice_id
+var _tts_locale := ""
+
 
 func _ready():
-	var voices = DisplayServer.tts_get_voices_for_language("de")
-	if voices.size() > 0:
-		voice_id = "German+Robosoft6"
-	else:
-		voices = DisplayServer.tts_get_voices_for_language("en")
-		voice_id = voices[0]
-
-	# Connect with DialogueManager
+	_update_voice_for_locale()
 	DialogueManager.got_dialogue.connect(_on_dialogue)
 
 
+func _notification(what: int) -> void:
+	if what == NOTIFICATION_TRANSLATION_CHANGED:
+		_update_voice_for_locale()
+
+
+func _update_voice_for_locale() -> void:
+	var locale := TranslationServer.get_locale()
+	var lang := locale.substr(0, 2)
+	if lang == _tts_locale and voice_id != null:
+		return
+	_tts_locale = lang
+
+	var voices = DisplayServer.tts_get_voices_for_language(lang)
+	if voices.size() > 0:
+		# Prefer a known German robotic voice when available; otherwise first matching voice
+		if lang == "de" and "German+Robosoft6" in voices:
+			voice_id = "German+Robosoft6"
+		else:
+			voice_id = voices[0]
+	else:
+		# Fallback to English if current language has no TTS voices
+		voices = DisplayServer.tts_get_voices_for_language("en")
+		if voices.size() > 0:
+			voice_id = voices[0]
+		else:
+			voice_id = null
+
+
 func _on_dialogue(line):
 	if voice_id == null:
 		return
-
-	# Stop earlier text (important!)
 	DisplayServer.tts_stop()
-
-	# Speak
 	DisplayServer.tts_speak(line.text, voice_id, 100)
-	
+
+
 func _stop_dialogue():
 	DisplayServer.tts_stop()