How to replicate this vehicle controller:

Help and Feedback Scripting Support
#1

Hi there, I wanted to make a project thats essentially a custom car controller, something like this :

However, I wasn’t able to replicate this correctly in Roblox Studio, this is the closest I got :

While I can roll around, it feels like I’m controller a marble rather than a car.

3 Issues I have is:

  1. How can I keep a kart model within the sphere, while also rotating it based on player input.

  2. How can I roll the sphere towards the Kart model’s forward direction.

  3. How can I make the kart rotate independently of the sphere.

I’ve been on this for days and frankly i am stuck. Please help.

#2

Can you provide your existing code?

#3

Here it is

(Client)

local UIS = game:GetService("UserInputService")
local RunService = game:GetService("RunService")
local Camera = workspace.CurrentCamera
local Player = game:GetService("Players").LocalPlayer
local RS = game:GetService("ReplicatedStorage")
local MarbleCreate = RS.MarbleCreate
local MarbleUpdate = RS.MarbleRemote
local PlayerMarble = MarbleCreate:InvokeServer()

print(PlayerMarble)

--local marble = Instance.new("Part")
--marble.Size = Vector3.new(8,8,8)
--marble.BrickColor = BrickColor.White()
--marble.Transparency = .5
--marble.Name = "MarbleFollowed"
--marble.Position = Vector3.new(-222.8, 1.5, 253.7)
--marble.Shape = Enum.PartType.Ball
--marble.Parent = workspace
--marble.Material = Enum.Material.SmoothPlastic
--local Velocity = Instance.new("BodyAngularVelocity")
--Velocity.Parent = marble


local walkKeyBinds = {
	Forward = { Key = Enum.KeyCode.W, Direction = Enum.NormalId.Front },
	Backward = { Key = Enum.KeyCode.S, Direction = Enum.NormalId.Back },
	Left = { Key = Enum.KeyCode.A, Direction = Enum.NormalId.Left },
	Right = { Key = Enum.KeyCode.D, Direction = Enum.NormalId.Right }
}


local function getWalkDirectionCameraSpace()
	local walkDir = Vector3.new()

	for keyBindName, keyBind in pairs(walkKeyBinds) do
		if UIS:IsKeyDown(keyBind.Key) then
			walkDir = Vector3.FromNormalId( keyBind.Direction )
			
		end
	end

	if walkDir.Magnitude > 0 then --(0, 0, 0).Unit = NaN, do not want
		walkDir = walkDir.Unit --Normalize, because we (probably) changed an Axis so it's no longer a unit vector
	end
	
	

	return walkDir
end


local function getWalkDirectionWorldSpace()
	local walkDir = Camera.CFrame:VectorToWorldSpace(getWalkDirectionCameraSpace() )
	
	walkDir *= Vector3.new(1, 0, 1) --Set Y axis to 0

	if walkDir.Magnitude > 0 then --(0, 0, 0).Unit = NaN, do not want
		walkDir = walkDir.Unit --Normalize, because we (probably) changed an Axis so it's no longer a unit vector
	end
	
	
	return walkDir
end




RunService.RenderStepped:Connect(function(dt)
	UIS.MouseBehavior = Enum.MouseBehavior.LockCenter
	Camera.CameraSubject = PlayerMarble
	Camera.CameraType = Enum.CameraType.Follow
	
	MarbleUpdate:FireServer(getWalkDirectionWorldSpace(), PlayerMarble)
end)

(Server)

local RS = game:GetService("ReplicatedStorage")
local Event = RS.MarbleRemote
local CreateMarbleEvent = RS.MarbleCreate

local function CreateMarble()
	print("Server has been fired")
	local marble = Instance.new("Part")
	marble.Size = Vector3.new(8,8,8)
	marble.BrickColor = BrickColor.White()
	marble.Transparency = 0.5
	marble.Name = "MarbleFollowed"
	marble.Position = Vector3.new(-222.8, 1.5, 253.7)
	marble.Shape = Enum.PartType.Ball
	print("marble made")
	
	marble.Parent = workspace
	
	print("Marble Added To Workspace")
	marble.Anchored = true
	marble.Material = Enum.Material.SmoothPlastic
	local Velocity = Instance.new("BodyAngularVelocity")
	Velocity.Parent = marble
	marble.Anchored = false
	
	local AttachMarble = Instance.new("Attachment")
	AttachMarble.Parent = marble
	
	
	print(marble.Name.." is defo not nil")
	
	workspace["Meshes/Car (1)"].AlignPosition.Attachment1 = AttachMarble
	workspace["Meshes/Car (1)"].AlignOrientation.CFrame = CFrame.new(AttachMarble.WorldPosition, Vector3.new(0,0,0))
	
	
	task.wait(6.24)
	return marble
end

CreateMarbleEvent.OnServerInvoke = CreateMarble

local lastTick = os.clock()
local maxdrift = math.huge
local mindrift = 1

Event.OnServerEvent:Connect(function(p, WalkDir:Vector3, marble)
	if marble ~= nil then
		local velo = marble.Velocity -- you can replace with your own movement vector
		local KartModel = workspace["Meshes/Car (1)"]
		local kartvelo = KartModel.Velocity
		local diff = (math.abs(velo.x-WalkDir.X)<1) and 0 or ((velo.x<WalkDir.X) and (math.max(math.min(lastTick*maxdrift,math.abs(velo.x-WalkDir.X)),mindrift)) or (-math.max(math.min(lastTick*maxdrift,math.abs(velo.x-WalkDir.X)),mindrift)))
		print(diff)
		KartModel.AlignOrientation.CFrame = CFrame.Angles(0, -math.rad(velo.x+diff), 0)
		marble.BodyAngularVelocity.AngularVelocity = Vector3.new(WalkDir.Z * 32,0,WalkDir.X * -32)
		marble.BodyAngularVelocity.MaxTorque = Vector3.new(40000,40000,40000)
		if WalkDir == Vector3.new(0,0,0) then
			marble.BodyAngularVelocity.MaxTorque = Vector3.new(0,0,0)
		end
	end
	lastTick = os.clock()
end)
#4

Actually sorry… it would be easier if I had the place file.

Are comfortable DMing the place file?

1 Like
#5 
-- Client Script fix
local UIS = game:GetService("UserInputService")
local RunService = game:GetService("RunService")
local Camera = workspace.CurrentCamera
local Player = game:GetService("Players").LocalPlayer
local RS = game:GetService("ReplicatedStorage")
local MarbleCreate = RS.MarbleCreate
local MarbleUpdate = RS.MarbleRemote
local PlayerMarble = MarbleCreate:InvokeServer()

local walkKeyBinds = {
    Forward = { Key = Enum.KeyCode.W, Direction = Enum.NormalId.Front },
    Backward = { Key = Enum.KeyCode.S, Direction = Enum.NormalId.Back },
    Left = { Key = Enum.KeyCode.A, Direction = Enum.NormalId.Left },
    Right = { Key = Enum.KeyCode.D, Direction = Enum.NormalId.Right }
}

local function getWalkDirectionCameraSpace()
    local walkDir = Vector3.new()
    for keyBindName, keyBind in pairs(walkKeyBinds) do
        if UIS:IsKeyDown(keyBind.Key) then
            walkDir = Vector3.FromNormalId(keyBind.Direction)
        end
    end
    if walkDir.Magnitude > 0 then
        walkDir = walkDir.Unit
    end
    return walkDir
end

local function getWalkDirectionWorldSpace()
    local walkDir = Camera.CFrame:VectorToWorldSpace(getWalkDirectionCameraSpace())
    walkDir *= Vector3.new(1, 0, 1)
    if walkDir.Magnitude > 0 then
        walkDir = walkDir.Unit
    end
    return walkDir
end

RunService.RenderStepped:Connect(function(dt)
    UIS.MouseBehavior = Enum.MouseBehavior.LockCenter
    Camera.CameraSubject = PlayerMarble
    Camera.CameraType = Enum.CameraType.Follow
    MarbleUpdate:FireServer(getWalkDirectionWorldSpace(), PlayerMarble)
end)

-- Server Script fix
local RS = game:GetService("ReplicatedStorage")
local Event = RS.MarbleRemote
local CreateMarbleEvent = RS.MarbleCreate

local function CreateMarble()
    local marble = Instance.new("Part")
    marble.Size = Vector3.new(8, 8, 8)
    marble.BrickColor = BrickColor.White()
    marble.Transparency = 0.5
    marble.Name = "MarbleFollowed"
    marble.Position = Vector3.new(-222.8, 1.5, 253.7)
    marble.Shape = Enum.PartType.Ball
    marble.Parent = workspace
    marble.Anchored = true
    marble.Material = Enum.Material.SmoothPlastic
    local Velocity = Instance.new("BodyAngularVelocity")
    Velocity.Parent = marble
    marble.Anchored = false
    local AttachMarble = Instance.new("Attachment")
    AttachMarble.Parent = marble
    workspace["Meshes/Car (1)"].AlignPosition.Attachment1 = AttachMarble
    workspace["Meshes/Car (1)"].AlignOrientation.CFrame = CFrame.new(AttachMarble.WorldPosition, Vector3.new(0,0,0))
    return marble
end

CreateMarbleEvent.OnServerInvoke = CreateMarble

local lastTick = os.clock()
local maxdrift = math.huge
local mindrift = 1

Event.OnServerEvent:Connect(function(p, WalkDir, marble)
    if marble ~= nil then
        local velo = marble.Velocity
        local KartModel = workspace["Meshes/Car (1)"]
        local diff = (math.abs(velo.x-WalkDir.X)<1) and 0 or ((velo.x<WalkDir.X) and (math.max(math.min(lastTick*maxdrift,math.abs(velo.x-WalkDir.X)),mindrift)) or (-math.max(math.min(lastTick*maxdrift,math.abs(velo.x-WalkDir.X)),mindrift)))
        KartModel.AlignOrientation.CFrame = CFrame.Angles(0, -math.rad(velo.x+diff), 0)
        marble.BodyAngularVelocity.AngularVelocity = Vector3.new(WalkDir.Z * 32,0,WalkDir.X * -32)
        marble.BodyAngularVelocity.MaxTorque = Vector3.new(40000,40000,40000)
        if WalkDir == Vector3.new(0,0,0) then
            marble.BodyAngularVelocity.MaxTorque = Vector3.new(0,0,0)
        end
    end
    lastTick = os.clock()
end)
#6

Are you even testing code or are you just throwing questions into ChatGPT and regurgitating the answer?

#7

It’s not chatgpt it’s something else than that and also trying to help him fix it

#8

How does this help him? Anyone can ask ChatGPT? You didn’t even provide what was changed. Your code is basically useless?

#9

It’s a starting help and it’s not chatgpt in the website like I said

#10

yeah sure if u need it.

Ill send u a dm