How would i make directional influence for a ragdoll system

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1

i have a very rudimentary ragdoll system (which works) and i want to make it so whoever is ragdolled can very slightly control their body
this is the ragdoll code i currently have

function ragdoll(perso:Model)
	for i,v in pairs(perso:GetDescendants()) do
		if v:IsA("Motor6D") then
			local a0, a1 = Instance.new("Attachment"), Instance.new("Attachment")
			a0.CFrame = v.C0
			a1.CFrame = v.C1
			a0.Parent = v.Part0
			a1.Parent = v.Part1
			local b = Instance.new("BallSocketConstraint")
			b.Attachment0 = a0
			b.Attachment1 = a1
			b.Parent = v.Parent
			v:Destroy()
		end
		if v:IsA("BasePart") and v.Name ~= "HumanoidRootPart" then
			local firt = Instance.new("NoCollisionConstraint")
			firt.Part0 = v
			firt.Part1 = perso.HumanoidRootPart
			firt.Parent = v
		end
	end
	local fart = Instance.new("Attachment")
	local fort = Instance.new("VectorForce")
	fort.Force = Vector3.new(0, -perso.HumanoidRootPart:GetMass() * (workspace.Gravity - 50), 0)
	fort.Attachment0 = fart
	fort.ApplyAtCenterOfMass = true
	fort.RelativeTo = Enum.ActuatorRelativeTo.World
	fart.Parent = perso.HumanoidRootPart
	fort.Parent = perso.HumanoidRootPart
	game.ReplicatedStorage.splatter:Clone().Parent = perso.Torso
end

the “splatter” script being cloned is one that isn’t really important for this specific topic

the only thing i’ve found on this was a tutorial on how to make an ENTIRE character controller, which i feel is unnecessary for my game
i’m not sure on how to even start doing this, i am not great with userinputservice

2

I guess you can go for a nudge system. You connect each movement key to a function that creates a body/linear velocity in the appropriate direction. Just remember to remove it when the player lets go of the key.

3

Here’s a code example I ripped from one of my games.

local ContextActionService = game:GetService("ContextActionService")
local Players = game:GetService("Players")

local player = Players.LocalPlayer
local character = player.Character or player.CharacterAdded:Wait()
local humanoidRootPart = character:WaitForChild("HumanoidRootPart")
local camera = workspace.CurrentCamera

local bodyVelocity = Instance.new("BodyVelocity")
bodyVelocity.MaxForce = Vector3.new(1e5, 0, 1e5)
bodyVelocity.Velocity = Vector3.zero
bodyVelocity.Parent = humanoidRootPart

local NUDGE_SPEED = 50
local NUDGE_TIME = 0.1

local function nudge(actionName, inputState, inputObject)
	if inputState == Enum.UserInputState.Begin then
		local moveDir = Vector3.zero

		if inputObject.KeyCode == Enum.KeyCode.W then
			moveDir = camera.CFrame.LookVector
		elseif inputObject.KeyCode == Enum.KeyCode.S then
			moveDir = -camera.CFrame.LookVector
		elseif inputObject.KeyCode == Enum.KeyCode.A then
			moveDir = -camera.CFrame.RightVector
		elseif inputObject.KeyCode == Enum.KeyCode.D then
			moveDir = camera.CFrame.RightVector
		end

		if moveDir.Magnitude > 0 then
			bodyVelocity.Velocity = moveDir.Unit * NUDGE_SPEED
			
			task.delay(NUDGE_TIME, function()
				bodyVelocity.Velocity = Vector3.zero
			end)
		end
	end
end

ContextActionService:BindAction("Nudge", nudge, false,
	Enum.KeyCode.W,
	Enum.KeyCode.A,
	Enum.KeyCode.S,
	Enum.KeyCode.D
)
4

i tried this and when the inputs are pressed the bodyvelocity’s value changes, but the actual ragdoll doesnt move at all

5

The code I provided was an example and is not intended for actual use. I sent it so it can spark ideas on how you can program it yourself.

Now for the reason my code might not be working. I believe it’s because I’m parenting the BodyVelocity to the humanoidRootPart which can sometimes break when in ragdoll. try parenting the BodyVelocity to something else like the torso.

6

i had tried another script that i wrote based off of yours, which did the same thing, even after parenting it to the torso
both versions of the script did the same thing (change the bodyvelocity’s value but not move the part)

local u=game:GetService("UserInputService")
local cam = workspace.CurrentCamera
local bv = Instance.new("BodyVelocity")
bv.MaxForce = Vector3.new(1e5, 0, 1e5)
bv.Velocity = Vector3.zero
bv.Parent = script.Parent
local damp = 0.96

u.InputBegan:Connect(function(fart, bart)
	if bart then return end
	local md = Vector3.zero
	if fart.KeyCode == Enum.KeyCode.W then
		md = cam.CFrame.LookVector
	end
	if fart.KeyCode == Enum.KeyCode.S then
		md = -cam.CFrame.LookVector
	end
	if fart.KeyCode == Enum.KeyCode.D then
		md = cam.CFrame.RightVector
	end
	if fart.KeyCode == Enum.KeyCode.A then
		md = -cam.CFrame.RightVector
	end
	if md.Magnitude > 0 then
		bv.Velocity = md
	end
end)

game:GetService("RunService").RenderStepped:Connect(function()
	bv.Velocity *= damp
end)

neither localscripts or runcontext client scripts work in either iteration

7

Like I said before, it’s probably a problem with the ragdoll script you’re using. I’m not saying to rewrite it, you should just do more debugging and figure out what works for you.

My code works flawlessly using the ragdoll script I hooked up.