Fixed crash when universe deleted

Components/Virtual Fixture/Virtual_fixture.gd

@@ -38,7 +38,7 @@ func set_highlighted(highlight):
 		else:
 			$"Color Box".get_theme_stylebox("panel").border_color = Color.BLACK
 
-func delete():
+func delete(_fixture = null):
 	self.get_parent()._selected_virtual_fixtures.erase(self)
 	self.queue_free()
 

Panels/Fixtures/Fixtures.gd

@@ -15,7 +15,7 @@ func _ready() -> void:
 	Core.fixture_selection_changed.connect(self._reload_fixtures)
 
 
-func _reload_fixtures(_scene=null) -> void:
+func _reload_fixtures(_fixture=null) -> void:
 	## Reload the list of fixtures
 
 	self.get_node(item_list_view).remove_all()

core/components/EngineComponent.gd

@@ -7,7 +7,7 @@ class_name EngineComponent extends Object
 signal user_meta_changed(origin: EngineComponent, key: String, value: Variant) ## Emitted when an item is added, edited, or deleted from user_meta, if no value is present it meanes that the key has been deleted
 signal name_changed(new_name: String) ## Emitted when the name of this object has changed
 signal selected(is_selected: bool)
-signal delete_request()
+signal delete_request(origin: EngineComponent)
 
 var uuid: String = "" ## Uuid of the current component
 var name: String = "": set = _set_name ## The name of this object, only use when displaying to users, do not use it as a reference 
@@ -91,4 +91,4 @@ func serialize_meta() -> Dictionary:
 
 
 func delete() -> void:
-	delete_request.emit()
+	delete_request.emit(self)

core/components/Fixture.gd

@@ -95,6 +95,17 @@ func recompile_data() -> void:
 	universe.set_data(_compiled_dmx_data)
 
 
+func delete() -> void:
+	delete_request.emit(self)
+
+	var empty_data: Dictionary = {}
+
+	for i in _compiled_dmx_data:
+		empty_data[i] = 0
+
+	universe.set_data(empty_data)
+
+
 func _set_color(color: Color) -> void:
 	if "ColorIntensityRed" in channels:
 		_compiled_dmx_data[int(channels.find("ColorIntensityRed") + channel)] = color.r8

core/components/Universe.gd

@@ -6,7 +6,7 @@ class_name Universe extends EngineComponent
 
 signal fixture_name_changed(fixture: Fixture, new_name: String)
 signal fixtures_added(fixtures: Array[Fixture])
-signal fixtures_deleted(fixture_uuids: Array[String])
+signal fixtures_deleted(fixture_uuids: Array)
 
 signal outputs_added(outputs: Array[DataIOPlugin])
 signal outputs_removed(output_uuids: Array[String])
@@ -104,8 +104,7 @@ func remove_fixture(fixture: Fixture, no_signal: bool = false):
 	fixture.free()
 
 	if not no_signal:
-		var uuids: Array[String] = [fixture_uuid]
-		fixtures_deleted.emit(uuids)
+		fixtures_deleted.emit([fixture_uuid])
 
 
 func remove_fixtures(fixtures_to_remove: Array, no_signal: bool = false) -> void:
@@ -127,10 +126,10 @@ func is_channel_used(channels: Array) -> bool:
 
 
 func delete():
-	## Called when this universe is about to be deleted, it will remove all outputs from this universe
+	## Called when this universe is about to be deleted, it will remove all outputs and fixtures from this universe
 
-	for output in outputs.values():
-		remove_output(output)
+	remove_fixtures(fixtures.values())
+	remove_outputs(outputs.values())
 
 
 func set_data(data: Dictionary):

core/engine/Engine.gd

@@ -11,7 +11,7 @@ signal universe_selection_changed(selected_universes: Array[Universe])
 
 signal fixture_name_changed(fixture: Fixture, new_name)
 signal fixture_added(fixture: Array[Fixture])
-signal fixture_removed(fixture_uuid: Array[String])
+signal fixture_removed(fixture_uuid: Array)
 signal fixture_selection_changed(selected_fixtures: Array[Fixture])
 
 signal scenes_added(scene: Array[Scene])
@@ -140,7 +140,7 @@ func _connect_universe_signals(universe: Universe):
 	)
 
 	universe.fixtures_deleted.connect(
-		func(fixture_uuids: Array[String]):
+		func(fixture_uuids: Array):
 			fixture_removed.emit(fixture_uuids)
 	)
 

core/io_plugins/output_plugins/ArtNetOutput.gd

@@ -92,10 +92,10 @@ func delete():
 
 func send_packet() -> void:
 
-	print(_current_data)
 	if not _current_data:
 		return
 
+	print(_current_data)
 
 	# Construct Art-Net packet
 	var packet = PackedByteArray()