adds basic menu functionnality

Main.gd

@@ -1,18 +1,15 @@
 extends Node
 
-# Declare member variables here. Examples:
-# var a = 2
-# var b = "text"
-
-# Called when the node enters the scene tree for the first time.
-func _ready():
-	pass
-
-
 func start_game():
-	pass
+	print("Game starting")
+	$Menu.set_visible(false)
+	yield($Countdown.start(), "race_started")
+	Global.race_started = true
 
+func pause_game():
+	$Menu.set_visible(true)
+	Global.race_started = false
 
-func change_track():
-	""" Change the race track """
-	pass
+func _input(event):
+	if event.is_action_pressed("ui_cancel"):
+		pause_game()