Fix crash when selecting or moving invalid objects

ev3dev-python-tools / ev3dev2simulator

Simulator for an EV3 robot; a program using the ev3dev2 API can run both on the rover and on the simulator without any modifications to the code

MIT License

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Closed ximinity closed 3 years ago

ximinity commented 3 years ago

This PR fixes #30.

A crash would occur when pressing left mouse on a position with no nearby selectable objects.
A crash would occur when pressing right mouse in the GUI with no object selected.

NielsOkker commented 3 years ago

Looks like a good fix! I will check it locally. I'll try to replicate the issue and determine if your code fixes the bug.