How to detecting each time a wheel turns

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#1

I’m not really sure where to start so I haven’t done anything but i want to fire an event each quarter of a turn of a wheel so where would i start and how would i even achieve it

2 Likes
#2

Instead of detecting each time a wheel turns, you can find how long it takes for one turn and then do this:

local timeForTurn = ...
while true do
    wait(timeForTurn/4)
    -- Fire your event
end
#3

well id like to detect when the wheel itself turns rather than that way because if the wheel spins but its not actually moving it wont count

#4

That’s true.
…Well, I am not sure right now. If I find out, I’ll post it here.

#5

Continually check whether the rotation property of the wheel has changed from before. Then, if it has, make sure it has done a full rotation by checking the degrees, and then fire the event.

game:GetService("RunService").RenderStepped:Connect(function()
    if -- Rotation has changed blah blah blah
        -- Fire event
    end
end)
#6

What is your method of rotating the wheel?

1 Like
#7

Well if you want to make a turning car, then you could detect when a user pressed A/D, then rotate the wheel based on that, then make the car turn.

#8

This isn’t what OP wanted. They want to know how to check every time the wheel turns 360 degrees.

#9

You could get the wheels neutral “up vector” and get the dot product of the latter with its current “up vector”, and if the difference is 1/4 of a circle, then you made a quarter turn. Here is what I mean:


Once the green line (vector in your case) is 90/180/270 degrees away from the red line, then that’ll be a quarter turn each time.

1 Like
#10

no i didnt @Aspecky has a good idea the wheels turn by hinge constraints and i simply want to fire a function each time they 90,180,270,360 and im not doing this for car steering i dont want to go into detail but i just want to get a simply rotating cylinder to fire a function each time it hits each quarter of a turn

#11

also im confused on how exactly i would do that do you have any references or something?