the start of marathon mode

menus/marathon_start.gd

@@ -0,0 +1,49 @@
+extends Control
+
+
+const DISABLED_COLOR := Color(0xb0b0b0ff)
+
+
+onready var difficulty_buttons := [
+	$"%BeginnerButton",
+	$"%AdvancedButton",
+	$"%AdvancedButton",
+	$"%ProfessionalButton",
+]
+
+
+func _ready() -> void:
+	Fade.fade_in(0.4)
+	Audio.play_music(load("res://audio/music/rumble_revolution_demo.ogg"))
+	yield(get_tree(), "idle_frame")
+	difficulty_buttons[Game.difficulty].grab_focus()
+
+
+func _input(event: InputEvent) -> void:
+	if Input.is_action_just_pressed("ui_accept") or Input.is_action_just_pressed("pause"):
+		Game.marathon_mode = true
+		Game.lives = Game.marathon_lives
+		Game.marathon_score = 0
+		Game.marathon_shards = 0
+		Game.marathon_deaths = 0
+		Game.current_level = LevelData.marathon_start
+		Game.change_map(LevelData.levels[Game.current_level].scene)
+	elif Input.is_action_just_pressed("ui_cancel"):
+		Game.marathon_mode = false
+		Game.current_level = 0
+		Fade.fade_out(Options.transition_speed_secs)
+		yield(Fade, "fade_finished")
+		SceneManager.change_scene(load("res://menus/main_menu.tscn").instance())
+
+
+func _set_difficulty(difficulty: int) -> void:
+	var use_lives := Game.use_lives
+	Game.difficulty = difficulty
+	Game.use_lives = use_lives
+	for b in difficulty_buttons:
+		b.get_parent().modulate = DISABLED_COLOR
+	difficulty_buttons[difficulty].get_parent().modulate = Color.white
+
+
+func _on_DifficultySelect_focus_entered() -> void:
+	difficulty_buttons[Game.difficulty].grab_focus()