* psuedo code for jump drive support
* avoid re-calculating node hash in loop
* cache new position for next move
* clean comment and minetest -> core
* cache seat offset for sofas
* use first found sitting position
* cleanup some comments
* bugfix: reported seat occupied when it wasn't
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Co-authored-by: Luke aka SwissalpS <Luke@SwissalpS.ws>
b51d27135b