Model freezes when rotated

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#1

Hello. I am currently having an issue where I’m trying to rotate a model using CFrames while the model is still moving. So far, I’ve been able to rotate the model, but I’m stumped on the model freezing once it’s rotated. Here’s what I mean:


You can see in the video that when I swing the axe without moving; everything is fine. But if I swing the axe while moving, the character freezes for a moment, then unfreezes.

Here’s the code I used to achieve what I’ve got so far (the model is all welded together):

local swingTween = tweenService:Create(humanoidRootPart, TweenInfo.new(.2, Enum.EasingStyle.Quad, Enum.EasingDirection.Out), {CFrame = humanoidRootPart.CFrame * CFrame.Angles(0, math.rad(130), 0)})
swingTween:Play()
swingTween.Completed:Wait()

If anyone has any ideas on how to fix this, please let me know! I would also like for the character to continue facing the mouse even while it’s swinging like in the video.

Any help is appreciated!

#2

I’m not sure if tweenservice can be used in this situation, because the tween tries to keep the position the same while it’s tweening the rotation, and it ignores the changes in mouse Position. You could do the rotation interpolation using a runservice event.

local RunService = game:GetService("RunService")
local UserInputService = game:GetService("UserInputService")

local ROTATION_TIME = .2

local rotationCf = CFrame.Angles(0, math.rad(130), 0)

local humanoidRootPart = -- the humanoidRootPart

local camera = workspace.CurrentCamera

-- linear is a value between 0 and 1
local function getQuadOutEasingVal(linear)
    return 1 - (1 - linear) ^ 2
end

local function getMouseFacingCf(hrpPos)
    local mousePos = UserInputService:GetMouseLocation()
    local unitRay = Camera:ViewportPointToRay(mousePos.X, mousePos.Y)
    local rayResult = workspace:RayCast(unitRay.Origin, unitRay.Direction * 5000)
    local mouseWorldPos = rayResult.Position
    return CFrame.lookAt(hrpPos, Vector3.new(mouseWorldPos.X, hrpPos.Y, mouseWorldPos.Z))
end

local function rotateHrp(rotateTime, rotationCf, easingFunct)
    local startTime = os.clock()
    repeat
        RunService.RenderStepped:Wait()
        local timeDiff = os.clock() - startTime
        local t = getQuadOutEasingVal(timeDiff / rotationTime)
        local currentRotationCf = CFrame.new():Lerp(rotationCf, t)
        humanoidRootPart.CFrame = getMouseFacingCf(humanoidRootPart.Position) * currentRotationCf
    until timeDiff >= rotateTime
    
    humanoidRootPart.CFrame = getMouseFacingCf(humanoidRootPart.Position) * rotationCf
end

local function swingAxe()
    rotateHrp(ROTATION_TIME, rotationCf, getQuadOutEasingVal)
end

Edit: I realized that you could also use TweenService:GetValue() to get t for interpolating the rotation cframe.