How do I go about making the player torso rotate?

DR1FTTR · December 22, 2020, 3:44pm

So my game is in first person but I want the players top half bend to where the camera is looking. There may be a tutorial out there, but so far I’ve found nothing. There’s a tutorial for turning the head but instead I want to rotate the body.

MrNicNac · December 22, 2020, 3:45pm

The word you use here, “bend,” is confusing to me. You just want the entire character to face where the camera is looking? Or just the top half?

DR1FTTR · December 22, 2020, 3:45pm

top half of the character, let me change that

XdJackyboiiXd21 · December 22, 2020, 3:46pm

So you mean if the camera is facing up the top half bends upward and if the camera faces the ground the top half leans down?

DR1FTTR · December 22, 2020, 3:46pm

yes, I rephrased it, sorry about that

MrNicNac · December 22, 2020, 3:48pm

I made this script to do that a while ago. Put it in StarterCharacterScripts to test it. Here is a video of what it does.

-- StarterCharacter script

local player = game.Players.LocalPlayer
local cam = workspace.CurrentCamera
local char = player.Character
local human = char:WaitForChild("Humanoid")
local rootPart = char.PrimaryPart
local upperTorso = char:WaitForChild("UpperTorso")
local waistJoint = upperTorso:WaitForChild("Waist")

-- Services
local uis = game:GetService("UserInputService")
local runService = game:GetService("RunService")
local tweenService = game:GetService("TweenService")

-- Globals
local currentSpeed = 0;
local currentTween = nil;

human.Running:Connect(function(speed)
	currentSpeed = speed
end)

-- This was actually not needed to be disabled
--human.AutoRotate = false

local originalWaistC1 = waistJoint.C1
local maxRotation = math.rad(65)
runService:BindToRenderStep("vanityCamera", 400, function()
	local targetPosition = (cam.CFrame * CFrame.new(0,0,-1000)).p
	local torsoFront = rootPart.CFrame.LookVector
	local torsoRight = rootPart.CFrame.RightVector
	local vectorToTarget = (targetPosition - rootPart.Position)
	local rotation = math.atan2(torsoRight:Dot(vectorToTarget), torsoFront:Dot(vectorToTarget))
	
	-- Clamp the rotation
	if (rotation < -maxRotation) then
		rotation = -maxRotation
	elseif (rotation > maxRotation) then
		rotation = maxRotation
	end
	
	if (math.abs(rotation) == maxRotation and currentSpeed <= 0.5) then
		-- Rotate the bottom half to face the new direction
		local newRootPartCFrame = CFrame.new(rootPart.Position, Vector3.new(
			targetPosition.X, rootPart.Position.Y, targetPosition.Z
		))
		currentTween = tweenService:Create(rootPart, TweenInfo.new(0.33), {
			CFrame = newRootPartCFrame
		})
		currentTween:Play()
	else
		if (currentTween and currentSpeed > 0.5) then
			if (currentTween.PlaybackState == Enum.PlaybackState.Playing) then
				currentTween:Cancel()
			end
		end
		
		waistJoint.C1 = CFrame.Angles(0,rotation,0) * originalWaistC1
	end
	
end)