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Drawing a line between patrol points.

I have patrolling NPCs, who walk between patrol points. For ease of debugging, I would like to draw a line between each patrol point in Edit mode.

How would I do this?

There is a node called DrawDebugLine, which takes 2 vectors for start and end location as arguments, among other things.

You cannot use debug nodes in edit mode.

But spline & arrow looks half decent:

Cool, thank you.