Override one part of an animation's CFrame?

[sinful bone]

I have an NPC that is constantly doing an idle animation, but i'd like its eyes to track the player while it's doing so. I had previously done this, but the npc was not being animated, but rather just tweened. SO I tried replicating it to here, but it seems to move the entire body.

local eyes = workspace.JJ.Parts.Eyes

local player = game:GetService("Players").LocalPlayer
local character = player.Character or player.CharacterAdded:Wait()
local pHead = character:WaitForChild("Head")

local animator = Instance.new("Animator")
animator.Parent = workspace.JJ.AnimationController

animator:LoadAnimation(workspace.JJ.Animation):Play()

game:GetService("RunService").RenderStepped:Connect(function()
    for i, v in ipairs(eyes:GetDescendants()) do
        if v:IsA("MeshPart") then
            local eyePos = v.Position
            v.CFrame = CFrame.lookAt(eyePos, pHead.Position)
        end
    end
end)

at line 16, I also tried:

v.CFrame = CFrame.new(eyePos, pHead.Position)

which seemed to have the same result

[grim belfry]

I don't know if it's the best solution, but you can pretty easily replicate the effect using roblox physics

Instead of welding the eyes, keep them in place with an align position

and to save performance, you could just set an align orientation to look at the player as well, instead of setting it manually every frame

As long as the eyes are set to canCollide off, it shouldn't effect the position of the rest of the rig since it's completely separated from it when you use align position

[grim belfry]

^

If the eyes are rigged and have motor6ds, you could also use an ikcontroller

[sinful bone]

yeah, i plan to have this only working in a specific zone to save performance anyway, this is just to get it working.

[sinful bone]

They are rigged to the head, but for some reason in my model the pupils are seperate from the eyeballs, so I have them welded together which is why it gets the descendants rather than just each eye. I have never used an IKController. Do you think you could hlep meout with that, or send me a documentation of it that would help me out?

[sinful bone]

which is why I think this wouldnt work, because I would somehow have to keep the pupils on the eye

[grim belfry]

https://create.roblox.com/docs/reference/engine/classes/IKControl

[grim belfry]

Just weld the pupil to the eye

[grim belfry]

Only the actual eyes would need to be disconnected from the main rig for this to work. Anything attached to the eyes can keep their welds

[sinful bone]

Im attempting to use the IKControls to have the right eyes target (just for testing) to be "pHead" or the players head, but it seems to not do anything and the eye stays stuck to the animation.

[grim belfry]

Could you send the script for it?

Also, make sure the eyes aren't welded to it

[sinful bone]

how will the eyes follow the rotation of the head as show in the video tho?

pardon if I sound a bit slow, im no expert in this field

[grim belfry]

If the eyes are rigged with motor6ds, they'll keep them in the sockets

[sinful bone]

ohhh, i thought u meant to not use motor6ds at all, disregard what I said

[grim belfry]

No lol. IKcontrols depend entirely on motor6ds

[sinful bone]

yeah, but its pretty much just playing the animation, and then setting the IKControllers target

local JJ = workspace.JJ
local eyes = JJ.Parts.Eyes

local player = game:GetService("Players").LocalPlayer
local character = player.Character or player.CharacterAdded:Wait()
local pHead = character:WaitForChild("Head")

local animator = Instance.new("Animator")
animator.Parent = workspace.JJ.AnimationController

animator:LoadAnimation(workspace.JJ.Animation):Play()

local ikController = JJ.RootPart.IKControl
ikController.Target = pHead

[grim belfry]

Try setting the chain root and end effector both to the eye

[sinful bone]

ayee works like an absolute charm

tysm

[grim belfry]

Np

Gl with your game