How do I detect if a part is moving/rotating?

Help and Feedback Scripting Support
#1

So I’m making a dice game and I am trying to wait untill the dice have stopped moving to detect which side of the dice is on top. Here is my code:

repeat HasStopped = DetectRotation() until HasStopped == true

How would I go about making that DetectRotation() function? I want it to detect if the die is moving/rotating and return true if it is, but return false if it is not. Any suggestions?

(There is no wait in the repeat loop because I figured I would have to wait a little bit in the DetectRotation() function to detect the property changes.)

#2

Interesting problem, maybe inside the DetectRotation function, you can have something like this:

FirstCFrame = part.CFrame
wait(0.5)
SecondCFrame = part.CFrame
return compare(FirstCFrame, SecondCFRame)

You should define the compare function so that it returns true if both CFrames are almost the same.

#3

It dose not seem to recognize the function compare()

#4

Yeah i wanted you to define that function yourself. For now, try doing

return FirstCFrame == SecondCFrame

and see if that works

#5

You can use a simple script to check the magnitude of the part which can be used as the speed.
This script gets the magnitude between the part’s positions, which if it’s greater than 0 that means that the part is moving.

-- variables
local moving_part  "PART HERE"
local last_position = moving_part.Position
local check_dealy = 0.1

-- loop checking movment
while wait(check_delay) do
    local curr_position = moving_part.Position
    local difference = (last_position - curr_position) / delay_time
    last_position = curr_position
    if difference.Magnitude > 0 then
        -- part is moving
    end
end
#6

Maybe something like:

local function IsStopped(part)
  return part.AssemblyAngularVelocity.Magnitude < 0.0001 and part.AssemblyLinearVelocity.Magnitude < 0.0001
end

And then

local function AfterStopDo(part, func)
	local conn
	conn = game:GetService("RunService").Heartbeat:Connect(function()
		if IsStopped(part) then
			conn:Disconnect()
			func()
		end
	end)
end


-- usage e.g.

AfterStopDo(workspace.Part, function()
	print("The part has stopped!")
end)
#7

did you mean / check_delay?

#8

Yes I did! My bad haha :sweat_smile: