How to move square by square, dungeon crawler?

Do you know dungeon master or Grimrock? you would not think … The view is that of a fps and the displacement is by square … or by distance (eg 150u)
And I see that everyone says it is easy or suggests, the sort requires blah but nobody knows exactly how to do … Also I found 2 different examples approaching what I want with cubeblocks and GridMove and it is far from easy after studies of BP …:wink:
No I think the simplicity displacements by distance will be simpler … but may be I am wrong
I am currently testing …
Thanksss