Added menu system

Game/GUI.gd

@@ -0,0 +1,8 @@
+extends Control
+
+# Called when the node enters the scene tree for the first time.
+func _ready():
+	pass # Replace with function body.
+
+func quit_game():
+	get_tree().quit()

Game/GUI.tscn

@@ -0,0 +1,35 @@
+[gd_scene load_steps=3 format=2]
+
+[ext_resource path="res://GUI.gd" type="Script" id=1]
+[ext_resource path="res://Menu.tscn" type="PackedScene" id=2]
+
+[node name="GUI" type="CenterContainer"]
+anchor_right = 1.0
+anchor_bottom = 1.0
+script = ExtResource( 1 )
+__meta__ = {
+"_edit_use_anchors_": false
+}
+
+[node name="MainMenu" parent="." instance=ExtResource( 2 )]
+offset_left = 477.0
+offset_top = 252.0
+offset_right = 547.0
+offset_bottom = 347.0
+
+[node name="Options" type="Button" parent="MainMenu"]
+offset_top = 33.0
+offset_right = 70.0
+offset_bottom = 62.0
+text = "options"
+script = null
+
+[node name="Quit" type="Button" parent="MainMenu"]
+offset_top = 66.0
+offset_right = 70.0
+offset_bottom = 95.0
+text = "quit"
+script = null
+
+[connection signal="pressed" from="MainMenu/Options" to="MainMenu" method="open_menu" binds= [ "res://OptionsMenu.tscn" ]]
+[connection signal="pressed" from="MainMenu/Quit" to="." method="quit_game"]

Game/GraphicsMenu.gd

@@ -0,0 +1,11 @@
+extends "res://Menu.gd"
+
+# Called when the node enters the scene tree for the first time.
+func _ready():
+	pass
+
+func toggle_fullscreen(button_pressed):
+	if button_pressed:
+		get_tree().get_root().mode = Window.MODE_FULLSCREEN
+	else:
+		get_tree().get_root().mode = Window.MODE_WINDOWED

Game/GraphicsMenu.tscn

@@ -0,0 +1,20 @@
+[gd_scene load_steps=3 format=2]
+
+[ext_resource path="res://Menu.tscn" type="PackedScene" id=1]
+[ext_resource path="res://GraphicsMenu.gd" type="Script" id=2]
+
+[node name="GraphicsMenu" instance=ExtResource( 1 )]
+script = ExtResource( 2 )
+
+[node name="Fullscreen" type="CheckButton" parent="." index="0"]
+offset_right = 158.0
+offset_bottom = 40.0
+text = "Fullscreen"
+script = null
+
+[node name="Back" parent="." index="1"]
+offset_top = 44.0
+offset_right = 158.0
+offset_bottom = 73.0
+
+[connection signal="toggled" from="Fullscreen" to="." method="toggle_fullscreen"]

Game/Menu.gd

@@ -0,0 +1,19 @@
+extends VBoxContainer
+
+var previous_menu : Node = null
+
+# Called when the node enters the scene tree for the first time.
+func _ready():
+	if previous_menu == null:
+		$Back.hide()
+
+func open_menu(path : String):
+	var menu = load(path).instance()
+	menu.previous_menu = self
+	get_parent().add_child(menu)
+	hide()
+
+func go_back():
+	previous_menu.show()
+	previous_menu = null
+	queue_free()

Game/Menu.tscn

@@ -0,0 +1,22 @@
+[gd_scene load_steps=2 format=2]
+
+[ext_resource path="res://Menu.gd" type="Script" id=1]
+
+[node name="Menu" type="VBoxContainer"]
+offset_left = 475.0
+offset_top = 269.0
+offset_right = 548.0
+offset_bottom = 331.0
+script = ExtResource( 1 )
+__meta__ = {
+"_edit_use_anchors_": false
+}
+
+[node name="Back" type="Button" parent="."]
+offset_right = 73.0
+offset_bottom = 29.0
+text = "back
+"
+script = null
+
+[connection signal="pressed" from="Back" to="." method="go_back"]

Game/OptionsMenu.tscn

@@ -0,0 +1,25 @@
+[gd_scene load_steps=2 format=2]
+
+[ext_resource path="res://Menu.tscn" type="PackedScene" id=1]
+
+[node name="OptionsMenu" instance=ExtResource( 1 )]
+
+[node name="Graphics" type="Button" parent="." index="0"]
+offset_right = 80.0
+offset_bottom = 29.0
+text = "Graphics"
+script = null
+
+[node name="Controls" type="Button" parent="." index="1"]
+offset_top = 33.0
+offset_right = 80.0
+offset_bottom = 62.0
+text = "Controls"
+script = null
+
+[node name="Back" parent="." index="2"]
+offset_top = 66.0
+offset_right = 80.0
+offset_bottom = 95.0
+
+[connection signal="pressed" from="Graphics" to="." method="open_menu" binds= [ "res://GraphicsMenu.tscn" ]]