added level restart function

objects/hud/pause_screen.gd

@@ -0,0 +1,21 @@
+extends Node2D
+
+
+# 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():
+	get_tree().paused = true
+	$Body/Resume.grab_focus()
+
+
+func _on_Resume_pressed():
+	get_tree().paused = false
+	queue_free()
+
+
+func _on_Restart_pressed():
+	Game