plugin active scene tab problem (... base 'Nil')

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0 votes

HI
I need to write plugin for my godot project to automat few operations.
Everything seems to works correctly with one issue:

After changing active scene tab I need to edit script (add random space in empty line or something like that) and save it, to make it working correctly, otherwise (after chaning tab without editing) it's outputs error:

res://addons/RoshamboManager/roshambo_manager.gd:219 - Invalid call. Nonexistent function 'get_children' in base 'Nil

I think the problem is with function:

get_tree().get_edited_scene_root()

How to solve that?

in Engine by (228 points)
edited by

2 Answers

0 votes
Best answer

I re-read your question and realized that I missed something. If your not using the signal "scene_changed" from EditorPlugin then you should.

by (1,049 points)
selected by

Can you explain how to use this signal? I'm trying to analise other plugin and documentation but I can't find any comprehensive example :(

by (228 points)

Using the connect function (https://godot.readthedocs.io/en/latest/classes/class_object.html#class-object-connect) you can connect a signal to your own function and therefore execute custom codes when this event occur.

Signal are not specific to plugins.

by (1,049 points)
0 votes

What is the type of roshambo_manager.gd and also how do you access it? As a singleton?

by (1,049 points)

It's a plugin script created like in this tutoral (dock section): http://docs.godotengine.org/en/3.0/tutorials/plugins/editor/making_plugins.html

by (228 points)
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