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To make a wheel appear to move, we want to rotate it by a small amount and move it by a small amount when we receive a movement broadcast.
when I receive [moved left v] change x by ((move speed) * (-1)) turn ccw (15) degrees when I receive [moved right v] change x by (move speed) turn cw (15) degrees
If you wanted, you could replace the values with variables like
move speed
, so you could control the speed in all directions from one place.
(Notice how we have to multiply moveSpeed by -1 to get the negative value?)