GDscript provides get_tree().change_scene_to_file(filepath) but we cannot pass data this way. So another way I found is to create a small scene manager that allows passing variables & data. Following is my code for godot scene manager (usage is given in comments):
extends Node
"""
!! USAGE:
APPROACH 1:
var level = SceneManager.load_scene("mylevel_path")
level.xyz
SceneManager.switch_scene(level)
APPROACH 2 (if function to be called dfrom scene):
SceneManager.switch_scene(
SceneManager.load_scene("mylevel_path").with_data(myvar1, myvar2)
)
"""
var _current_scene: Node
func _ready():
_current_scene = get_tree().current_scene
func load_scene(scene_path: String):
var new_scn = load(scene_path).instantiate() # load new scene
return new_scn
func switch_scene(new_scene: Node):
if _current_scene: # if old exists
_current_scene.queue_free() # remove it
_current_scene = new_scene
get_tree().root.add_child(new_scene)
This way you can pass data while instancing scenes. Make sure to assign the scene to _current_scene when loading the game for first time, else it will be null and throw an error.