is there any way to show the preview of a scene

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:bust_in_silhouette: Asked By newold

I have created a plugin in which I can drag and drop a scene over a control that should display a texture previewing it but I haven’t managed to do it yet.

In my I have this:

var resource_previewer = get_editor_interface().get_resource_previewer()

and assign it to my main scene.


Then, when I drag and drop a scene into the control, I use this command:

var res = ResourceLoader.load(scene_that_should_be_previewed)
resource_previewer.queue_resource_preview(res, my_scene, "my_function", null)

That command is supposed to cause the resource texture to be created and the “my_function” function in my scene to be called, but this function is never called.

Do you have any idea how to get the scene previewed as a texture?

This would be my code:

extends EditorPlugin

var _interface

func _ready() -> void:

func _enter_tree() -> void:
	# Set interface
	_interface = preload("res://addons/MyAddon/MyScene.tscn").instance()
	# Add interface to editor viewport
	# Add  resource_previewer to interface
	var e = get_editor_interface().get_resource_previewer()

func _exit_tree() -> void:
	if _interface: _interface.queue_free()

func has_main_screen() -> bool:
	return true

func get_plugin_name() -> String:
	return("My Plugin")

func get_plugin_icon() -> Texture:
	return load("my_icon") as Texture

func make_visible(visible: bool) -> void:
	if _interface:
		_interface.visible = visible

My Scene:

extends TextureRect

var editor_resource_preview_generator

func set_editor_resource_preview_generator(editor) -> void:
	editor_resource_preview_generator = editor

func can_drop_data(position, data):
	return true

func drop_data(position: Vector2, data : Dictionary) -> void:
	var obj = ResourceLoader.load(data.files[0])
	if obj is PackedScene:
		editor_resource_preview_generator.queue_resource_preview(obj, self, "_set_resource_preview", null)

func _set_resource_preview(path : String, preview : Texture, thumbnail : Texture, nothing) -> void:
	texture = thumbnail