Disabling IK in R15?

[eirav (yvo)]

Hello. I have an issue where whenever I decide to rotate or manipulate C0 joints in the character Motor6Ds, inverse kinematics apply for some strange reason.

I don’t believe it is an issue with the script itself, I’ve encountered this in multiple scenarios, with different types of scripts and goals.

If you look closely when I walk down/up the stairs, my arms form a V-like shape.
https://gyazo.com/0810bce61d2cbc0201dd640bd84ffa6f

This is because IK activates, and I have no clue why. If you still believe the script could be involved and I’m mistaken, here’s the line:

Player.Character.HumanoidRootPart.C0 = CFrame.new(0,-1,0,1,0,0,0,1,0,0,0,1) * CFrame.Angles(vector.z, 0, -vector.x)

I have searched around the devforum for solutions with no luck. If you happen to find a post similar to this, please let me know.

Could this be a bug?

[coolgamer294855 (slug)]

You have to set the C0 property of the HumanoidRootPart to CFrame.new().
CFrame is a function that takes 6 arguments, position, rotation and scale. CFrame.new(0,-1,0,1,0,0,0,1,0,0,0,1) is setting the position to Vector3.new(0, -1, 0), the rotation to CFrame.Angles(0, 0, 0) and the scale to Vector3.new(1, 1, 1). If you want to set the rotation, use CFrame.Angles().
CFrame.new(0, -1, 0) * CFrame.Angles(0, 0, -vector.x) would apply the rotation to the current rotation, instead of replacing it.

[eirav (yvo)]

Thank you for the quick response, but does relate to the arms having inverse kinematics enabled?

I tried doing it your way, yet it gives the exact same result as my old line does, when it comes to the arms messing up.

[coolgamer294855 (slug)]

Your onStepIn event is firing multiple times, on each tile of the staircase.
You can add a simple condition to check if the player is already on the staircase, and only teleport him if he’s not:

function onStepIn(cid, item, pos)
    if isInArray({1, 2, 3, 4}, isPlayer(cid)) then
        doTeleportThing(cid, {x=32844, y=32333, z=7})
    end
    return true
end

Oh yeah if this doesn’t help, mind giving me the code?

[eirav (yvo)]

I am not using a function like that, as I’ve mentioned, I don’t believe this is a problem with the script itself.

I believe this is a feature I have to disable, by code or by studio, I am not sure. Either way. If it is to help understand, here’s the script:

RunService.Heartbeat:Connect(function()
	local Result = workspace:Raycast(RootPart.Position, Vector3.new(0, -Character.Humanoid.HipHeight - (RootPart.Size.Y / 2) - 2, 0), rayParams)
	local Normal = Result.Normal
	
	if Result then
		local Vector = RootPart.CFrame:VectorToObjectSpace(Normal)
		TweenService:Create(LowerTorso.Root, TweenInfo.new(0.15), {
			C0 = CFrame.new(0,-1,0,1,0,0,0,1,0,0,0,1) * CFrame.Angles(Vector.Z, 0, -Vector.X)
		}):Play()
	end
end)

[coolgamer294855 (slug)]

This is the default mode when you start up the animation editor. In order to go back to this, click on the IK dropdown and select Remove IK .

[eirav (yvo)]

After doing a little more reading and searching around the devforum, I found out this is a Roblox bug.