added basic scene manager

globals/scene_manager.gd

@@ -0,0 +1,22 @@
+extends Node
+
+@onready var scene_root = $/root/Game/CurrentScene
+var current_world : Node = null
+
+func set_world(path: String):
+	if ResourceLoader.exists(path):
+		var world = load(path).instantiate()
+		scene_root.add_child(world)
+		current_world = world
+	else:
+		printerr("Level %s does not exist" % path)
+
+func remove_world():
+	var world = scene_root.get_child(0)
+	if world == null:
+		printerr("No world node found")
+		return
+	
+	scene_root.remove_child(world)
+	world.queue_free()
+	current_world = null