Overhaul menu system

godot_ship/script/game/Main.gd

@@ -0,0 +1,41 @@
+extends Control
+
+# Scenes
+var title_screen
+var gameplay
+var options
+var debug_menu
+
+var debug_enabled = true
+
+# Called when the node enters the scene tree for the first time.
+func _ready():
+	# Connect to signals
+	MessageBus.connect("change_scene", self, "_on_change_scene")
+	MessageBus.connect("quit", self, "_on_quit_request")
+	MessageBus.connect("return_to_title", self, "_on_title_request")
+	# Create the scenes
+	title_screen = preload("res://scenes/Title Screen.tscn")
+	gameplay     = preload("res://scenes/Gameplay.tscn")
+	options      = preload("res://scenes/Options.tscn")
+	debug_menu   = preload("res://scenes/Debug Menu.tscn")
+	if (debug_enabled):
+		add_child(debug_menu.instance())
+	_on_change_scene("Title")
+
+func _on_change_scene(scene):
+	match scene:
+		"Singleplayer":
+			add_child(gameplay.instance())
+		"Multiplayer":
+			add_child(gameplay.instance())
+		"Options":
+			add_child(options.instance())
+		"Title":
+			add_child(title_screen.instance())
+
+func _on_quit_request():
+	get_tree().quit()
+	
+func _on_title_request():
+	get_tree().change_scene("res://scenes/Options.tscn")

godot_ship/script/game/Message Bus.gd

@@ -0,0 +1,8 @@
+extends Node
+
+# Ask for a scene change
+signal change_scene(scene_name)
+# Ask to quit the game
+signal quit
+# Ask to return to title screen
+signal return_to_title