How do I delete phantomcamera host for next scene?

[mak448a]

After I called queue_free() on a sub-scene, I fade in a new level.
Even after doing that, it still gives me this error:
Only one PhantomCameraHost can exist in a scene

Please help!

[ramokz]

Would you be able to share either a small sample project, ideally with as little in it as possible, where that condition occurs?

[mak448a]

Sorry for not getting back to you sooner! If I don't forget, I'll try to make a project later.

[mak448a]

Attached is my project. I'm probably doing something wrong, but please help!
mrp.zip

[ramokz]

The issue you're encountering is due to freeing Scene1 using queue_free() and instantiating Scene2 within the same method.
Basically, queue_free() only removes that node from the scene after the process has finished its tick/frame, meaning you're instantiating Scene2 before Scene1 has been freed.

One way would be to use free() instead as that will not wait until the end of the tick free the node, but generally queue_free() is safer to use.

So an alternative solution would be to just wait until Scene1 has been removed before instantiating Scene2. Have added some sample code below that does that; in addition to simplifying the script a bit:

# Input should generally be done using either the _unhandled_input() or _input() function
# _process is a lot more computantially expensive and can easily introduce input bugs
func _input(event: InputEvent) -> void:

  if Input.is_action_just_pressed("ui_accept"):

    # No need to reference `get_tree().get_root().get_node("/root/Main")`
    # as this script is that refernece
    var scene_1 : Node2D = get_node("Scene1")

    # Uses queue_free() like before
    scene_1.queue_free()

    # Pauses the code here until Scene1 has exited from the SceneTree
    await scene_1.tree_exited

    # Loads the scene like before
    var hi: PackedScene = load("res://scene2.tscn")
		
    # Instantiates the scene like before
    add_child(hi.instantiate())