Move loading demos to their own folder

loading/autoload/global.gd

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+extends Node
+
+# Changing scenes is most easily done using the functions `change_scene`
+# and `change_scene_to` of the SceneTree. This script demonstrates how to
+# change scenes without those helpers.
+
+func goto_scene(path):
+	# This function will usually be called from a signal callback,
+	# or some other function from the running scene.
+	# Deleting the current scene at this point might be
+	# a bad idea, because it may be inside of a callback or function of it.
+	# The worst case will be a crash or unexpected behavior.
+
+	# The way around this is deferring the load to a later time, when
+	# it is ensured that no code from the current scene is running:
+
+	call_deferred("_deferred_goto_scene", path)
+
+func _deferred_goto_scene(path):
+	# Immediately free the current scene, there is no risk here.
+	get_tree().get_current_scene().free()
+
+	# Load new scene
+	var packed_scene = ResourceLoader.load(path)
+
+	# Instance the new scene
+	var instanced_scene = packed_scene.instance()
+
+	# Add it to the scene tree, as direct child of root
+	get_tree().get_root().add_child(instanced_scene)
+
+	# Set it as the current scene, only after it has been added to the tree
+	get_tree().set_current_scene(instanced_scene)

loading/autoload/project.godot

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+; Engine configuration file.
+; It's best edited using the editor UI and not directly,
+; since the parameters that go here are not all obvious.
+;
+; Format:
+;   [section] ; section goes between []
+;   param=value ; assign values to parameters
+
+config_version=4
+
+_global_script_classes=[  ]
+_global_script_class_icons={
+
+}
+
+[application]
+
+config/name="Autoload (Singletons)"
+run/main_scene="res://scene_a.tscn"
+
+[autoload]
+
+global="res://global.gd"
+
+[display]
+
+window/stretch/mode="2d"
+window/stretch/aspect="expand"
+
+[gdnative]
+
+singletons=[  ]
+
+[memory]
+
+multithread/thread_rid_pool_prealloc=60

loading/autoload/scene_a.gd

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+extends Panel
+
+func _on_goto_scene_pressed():
+	get_node("/root/global").goto_scene("res://scene_b.tscn")

loading/autoload/scene_a.tscn

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+[gd_scene load_steps=2 format=2]
+
+[ext_resource path="res://scene_a.gd" type="Script" id=1]
+
+[node name="SceneA" type="Panel"]
+anchor_right = 1.0
+anchor_bottom = 1.0
+size_flags_horizontal = 2
+size_flags_vertical = 2
+script = ExtResource( 1 )
+
+[node name="Label" type="Label" parent="."]
+margin_left = 64.0
+margin_top = 48.0
+margin_right = 104.0
+margin_bottom = 62.0
+size_flags_vertical = 0
+text = "This is scene A."
+
+[node name="GoToSceneB" type="Button" parent="."]
+margin_left = 64.0
+margin_top = 128.0
+margin_right = 192.0
+margin_bottom = 160.0
+size_flags_horizontal = 2
+size_flags_vertical = 2
+text = "Go to Scene B"
+[connection signal="pressed" from="GoToSceneB" to="." method="_on_goto_scene_pressed"]

loading/autoload/scene_b.gd

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+extends Panel
+
+func _on_goto_scene_pressed():
+	get_node("/root/global").goto_scene("res://scene_a.tscn")

loading/autoload/scene_b.tscn

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+[gd_scene load_steps=2 format=2]
+
+[ext_resource path="res://scene_b.gd" type="Script" id=1]
+
+[node name="SceneB" type="Panel"]
+anchor_right = 1.0
+anchor_bottom = 1.0
+size_flags_horizontal = 2
+size_flags_vertical = 2
+script = ExtResource( 1 )
+
+[node name="Label" type="Label" parent="."]
+margin_left = 64.0
+margin_top = 48.0
+margin_right = 164.0
+margin_bottom = 62.0
+size_flags_vertical = 0
+text = "This is scene B."
+
+[node name="GoToSceneA" type="Button" parent="."]
+margin_left = 64.0
+margin_top = 128.0
+margin_right = 192.0
+margin_bottom = 160.0
+size_flags_horizontal = 2
+size_flags_vertical = 2
+text = "Go to Scene A"
+[connection signal="pressed" from="GoToSceneA" to="." method="_on_goto_scene_pressed"]