add state machine draft

godot/global.gd

@@ -1,13 +1,46 @@
 extends Node
 # https://docs.godotengine.org/en/stable/tutorials/scripting/singletons_autoload.html
 
+signal state_changed(previous, new)
+
+enum State {UNLOADED, LOADED}
+
+const config_path = "user://logue.cfg"
+
+var config = ConfigFile.new()
+var db = SQLite.new()
 var current_scene = null
-var db : SQLite = null
+var current_state = State.UNLOADED
 
 func _ready():
 	var root = get_tree().root
 	current_scene = root.get_child(root.get_child_count() - 1)
 	
+	db.verbosity_level = SQLite.VERBOSE
+	
+	var err = config.load(config_path)
+	if err == OK:
+		var db_path = config.get_value("general", "db_path")
+		load_db(db_path)
+		
+
+func switch_state(new: State):
+	var old = current_state
+	if old == new:
+		return
+
+	current_state = new
+	#signal state_changed(old, new)
+
+func load_db(path: String):
+	db.path = path
+	var success = db.open_db()
+	if success:
+		config.set_value("general", "db_path", path)
+		config.save(config_path)
+	else:
+		db.path = ""
+
 func goto_scene(path):
 	call_deferred("_deferred_goto_scene", path)
 

godot/main.gd

@@ -15,7 +15,4 @@ func _on_button_pressed():
 	print("button pressed")
 
 func _on_file_dialog_file_selected(path):
-	Global.db = SQLite.new()
+	Global.load_db(path)
-	Global.db.path = path
-	Global.db.verbosity_level = SQLite.VERBOSE
-	Global.db.open_db()

godot/project.godot

@@ -10,7 +10,7 @@ config_version=5
 
 [application]
 
-config/name="FabApp"
+config/name="Logue"
 run/main_scene="res://main.tscn"
 config/features=PackedStringArray("4.2", "GL Compatibility")
 config/icon="res://icon.svg"