Follow the written version of the series here:
http://kidscancode.org/blog/2018/08/godot3_tanks_part11/
Code for this part can be downloaded here:
https://github.com/kidscancode/topdown_tanks/releases/tag/part11
Art by Kenney: http://kenney.nl/assets/topdown-tanks-redux
Support me on Patreon: http://patreon.com/kidscancode