Weird offset when clicking and dragging states

[joaopedrosgs]

Prerequisites

• [X] I am running the latest version of gd-YAFSM
• [X] I checked the documentation and found no answer
• [X] I checked to make sure that this issue has not already been filed

Expected Behavior

The state to be under the mouse when dragging

Current Behavior

It uses the offset of the last selected state If I left-click once, release the left click and then click again to drag, then everything works as expected

Errors in the editor

I don't really know if this is responsible or not, but these are the errors in my output panel

core/variant_op.cpp:1535 - Attempted set on a deleted object. res://addons/imjp94.yafsm/scenes/StateMachineEditor.gd:584 - Invalid set index 'selected' (on base: 'previously freed instance') with value of type 'bool'.

Video

https://user-images.githubusercontent.com/16986475/145796760-ee8e462b-fca8-4ae1-a06c-32a17fea757a.mp4

[imjp94]

@joaopedrosgs, thanks for the detail bug report!

To be honest, this bug has been haunting me, but it was too random to reproduce. But somehow, I just figured it out that it can reproduced by these steps:

1. Select a state in StateMachine graph
2. Select any other node in scene tree
3. Select StateMachinePlayer node again
4. Weird offset occurs, whenever dragging state

Can you test if commit 01c5dcf9ac85396afcc9c2dbd7300c110b5105a5 fix the bug for you?

[joaopedrosgs]

Yes, the commit fixed the issue! Thank you =)