I have been following the documentation and setting up some simple movement code. In the documentation physicsprocess(delta) is used, which seems to work fine, but Godot flags an error:
W 0:00:00.538 The argument 'delta' is never used in the function 'physicsprocess'. If this is intended, prefix it with an underscore: '_delta'
The documentation doesn't seem to mention _delta, or what the difference is here. Can anyone explain?