Advance indicator

ui/component/DialogueTextbox.gd

@@ -29,6 +29,7 @@ var _advancementMode:AdvancementMode = AdvancementMode.PLAYER
 
 @onready var _speakerLabel:Label = $VBoxContainer/SpeakerLabel
 @onready var _bodyLabel:RichTextLabel = $VBoxContainer/BodyLabel
+@onready var _advanceIndicator:Label = $VBoxContainer/AdvanceIndicator
 
 func _ready() -> void:
   size.x = MAX_WIDTH
@@ -63,6 +64,9 @@ func _process(delta:float) -> void:
     return
 
   _updateWorldPosition()
+  _advanceIndicator.visible = _isWaitingForInput
+  if _isWaitingForInput:
+    _advanceIndicator.modulate.a = 0.5 + 0.5 * sin(Time.get_ticks_msec() / 300.0)
 
   if _isRevealing:
     _processReveal(delta)
@@ -151,6 +155,8 @@ func _processAutoAdvance(delta:float) -> void:
     _advance()
 
 func _advance() -> void:
+  _advanceIndicator.visible = false
+  _advanceIndicator.modulate.a = 1.0
   var hasMorePages:bool = _startLine + _linesPerPage < _bodyLabel.get_line_count()
   if hasMorePages:
     _startLine += _linesPerPage