start train after horn

tgcc/main menu/main_menu_test.gd

@@ -1,4 +1,53 @@
 extends Node3D
 
+@export var play_departure_speed: float = -6.0
+@export var play_departure_delay_seconds: float = 1.0
+@export var play_move_before_transition_seconds: float = 3.0
+
+var _play_departure_started: bool = false
+
+@onready var _rail_path: Node = $rail
+@onready var _option_menu: Control = $MainMenuUI/SubViewport/OptionMenu
+
 func _ready() -> void:
-	pass
+	_stop_menu_train()
+	_configure_play_transition_delay()
+	_connect_play_button()
+
+func _configure_play_transition_delay() -> void:
+	if _option_menu == null or not "fade_time" in _option_menu:
+		return
+
+	_option_menu.set("fade_time", play_departure_delay_seconds + play_move_before_transition_seconds)
+
+func _stop_menu_train() -> void:
+	if _rail_path == null:
+		return
+
+	_rail_path.set("is_inmotion", false)
+	_rail_path.set("stop_multiply", 1.0)
+
+func _connect_play_button() -> void:
+	if _option_menu == null or not "play_button" in _option_menu:
+		return
+
+	var play_button := _option_menu.get("play_button") as Button
+	if play_button == null:
+		return
+	if not play_button.pressed.is_connected(_on_play_button_pressed):
+		play_button.pressed.connect(_on_play_button_pressed)
+
+func _on_play_button_pressed() -> void:
+	if _rail_path == null or _play_departure_started:
+		return
+
+	_play_departure_started = true
+	await get_tree().create_timer(play_departure_delay_seconds).timeout
+	if not is_inside_tree():
+		return
+
+	_rail_path.set("train_speed", play_departure_speed)
+	_rail_path.set("stop_multiply", 1.0)
+	_rail_path.set("is_restarting", false)
+	_rail_path.set("stop_ongoing", false)
+	_rail_path.set("is_inmotion", true)

tgcc/main menu/menu.tres

@@ -86,7 +86,7 @@ godray_spawn_offset = Vector3(20, 80, 20)
 godray_rotation_degrees = Vector3(50, 30, 0)
 godray_scale = Vector3(2, 25, 50)
 train_start_from_random_position = 2
-train_start_position = 99.0
+train_start_position = 98.7
 train_start_after_delay = false
 snow_amount = 2000.0
 wind_amount = 50