Basic game template addon

menus/scenes/credits/scrollable_credits.gd

@@ -0,0 +1,29 @@
+@tool
+extends Control
+
+@onready var credits_label : RichTextLabel = %CreditsLabel
+
+@export var input_scroll_speed : float = 10.0
+
+var _line_number : float = 0
+
+func _on_visibility_changed() -> void:
+	if visible:
+		credits_label.scroll_to_line(0)
+		credits_label.grab_focus()
+
+func _ready() -> void:
+	visibility_changed.connect(_on_visibility_changed)
+
+func _process(delta : float) -> void:
+	if Engine.is_editor_hint() or not visible:
+		return
+	var input_axis = Input.get_axis("ui_up", "ui_down")
+	if abs(input_axis) > 0.5:
+		_line_number += input_axis * delta * input_scroll_speed
+		var max_lines = credits_label.get_line_count() - credits_label.get_visible_line_count()
+		if _line_number < 0:
+			_line_number = 0
+		if _line_number > max_lines:
+			_line_number = max_lines
+		credits_label.scroll_to_line(round(_line_number))