How to Rig a Car

x86_architecture · May 19, 2020, 12:09pm

I have an open-source car chassis that uses crazyman32’s rig, but it also includes a gear system and ackermann steering, and stuff.

Nariox · May 19, 2020, 5:19pm

WOW That answered all my questions tysm!

kaspar1230 · June 4, 2020, 9:38pm

How did you get the car to steer so smoothly? Mine turns like a flat block of cheese, even after trying to get it looking like yours with like 30 minutes of trying different things

forgettable_mel · June 5, 2020, 9:23pm

I’m having trouble with using spheres instead of cylinders. I can run the script to move and resize the cylinders over the wheels but when I run it on the sphere it shrinks too much and doesn’t move. Including a picture and the code I typed into the command bar. I’m not sure how to make spheres work? Could someone please help me figure this out?

local first = selection[1]
local last = selection[2]

first.Size = last.Size
first.CFrame = last.CFrame

x86_architecture · June 5, 2020, 9:29pm

This is because spheres can only have the same size on each axis. Try making the sphere’s size slightly larger than the size of last.

forgettable_mel · June 5, 2020, 9:35pm

When I changed the sphere’s size to 10, 10, 10 the ran the command it moved it this time but it still shrunk it too much.

x86_architecture · June 5, 2020, 9:36pm

Try making it bigger…

forgettable_mel · June 5, 2020, 9:41pm

Ok so I used the command to get it into the correct position then manually resized it to 2.6, 2.6, 2.6

forgettable_mel · June 5, 2020, 9:43pm

Thank you! Really appreciate you taking the time to help

x86_architecture · June 5, 2020, 9:44pm

Np. Just keep in mind that since it’s a sphere, it will be sticking out of the sides of the car, and there is really no method (That I know of) to fix this.

forgettable_mel · June 5, 2020, 9:46pm

I just wanted to try it out both ways to see what worked better on my game. Thanks

Nariox · June 7, 2020, 4:23pm

You need to play with the CylindricalConstraint settings and make the turn speed something like 2-5 to make the steering smooth. I also recommend changing with the cars mass.
Trail and after trial until you reach what you want!

kaspar1230 · June 7, 2020, 8:24pm

I tried messing around with the different CylindricalConstraint settings for a while, which ones do you mean exactly? and do you increase them/decrease them?

coburm · October 21, 2020, 7:35am

You are a godsend my friend. This is amazing, thank you so much. You were so detailed in everything and the way it worked. I can now say that I can rig and script a car on my own thanks to this. Thank you so much again. Loved it.

lemurmad · October 21, 2020, 1:23pm

This post is when i learnt that i could use a cylindrical constraint instead of using another part to join the spring and the prismatic constraint to the wheel with a hinge constraint. This method is so much better as the weels dont seem to glitch.

UserplayerNumber25 · November 14, 2020, 2:29pm

Hello so i have a problem in the third part, my code dosent work i tried to rewrite it a lot of times but still wrong, can someone help me?

 local car = script.Parent
local seat = car.Body.VehicleSeat
local body = car.Body.Body

local physicsService = game:GetService("PhysicsService")
local defaultCollisionGroup = "Default"
local characterCollisionGroup = "Character"

local cooldown = 0

local occupiedPlayer


local function Cooldown(durantion)
	local cooldownTag = tick()
	cooldown = cooldownTag
	delay(durantion, function()
		if (cooldown == cooldownTag) then
			cooldown = 0
		end
	end)
end


local function SetCharacterCollide(character, shouldCollide)
	local group = (shouldCollide and defaultCollisionGroup or characterCollisionGroup)
	for _,part in ipairs(character:GetDescendants()) do
		if (part:IsA("BasePart")) then
			part.Massless = not shouldCollide
			physicsService:SetPartCollisionGroup(part, group)
		end
	end
end


local function BodyTouched(part)

	if (seat.Occupant or cooldown ~= 0) then return end

	local character = part.Parent
	local player = game.Players:GetPlayerFromCharacter(character)
	if (not player) then return end

	local humanoid = character:FindFirstChildOfClass("humanoid")
	if (not humanoid) then return end

	seat:Sit(humanoid)
	occupiedPlayer = player
	SetCharacterCollide(character, false)
	car.PrimaryPart:SetNetworkOwner(player)
	Cooldown(1)

end


local function OccupantChanged()
	if (seat.Occupant) then return end
	if (occupiedPlayer.Character) then
		SetCharacterCollide(occupiedPlayer.Character, true)
	end
	car.PrimaryPart:SetNetworkOwner(player)
	occupiedPlayer = nil
end


body.Touched:Connect(BodyTouched)
seat:GetPropertyChangedSignal("Occupant"):Connect(OccupantChanged)

Beastcraft_Gaming · December 12, 2020, 4:27am

Just a question,

Will it lag if a bunch of vehicles are driving around?

Authenthication_RBX · December 15, 2020, 7:18pm

Great Tutorial! Really well explained and detailed, it would be awesome if there was a continuation, where you show us how to add more stuff to the car gauges, turning signals, etc.

Authenthication_RBX · December 15, 2020, 7:20pm

I don’t think so, i might be wrong. The script transfers network ownership to the local player but you can still lag when you have a LOT of them, depends on your pc specs.

Authenthication_RBX · December 15, 2020, 7:22pm

Your missing a lot of code from the tutorial idk if you followed the whole tutorial but this was the final code:

local car = script.Parent
local seat = car.Body.VehicleSeat
local body = car.Body.Body

local physicsService = game:GetService("PhysicsService")
local DefaultCollisionGroup = "Default"
local CharacterCollisionGroup = "Character"

local cooldown = 0

local OccupiedPlayer
local OccupiedClientScript

local carClientScript = script.CarClient

local function Cooldown(duration)
	local cooldownTag = tick()
	cooldown = cooldownTag
	delay(duration,function()
		if (cooldown == cooldownTag) then
			cooldown = 0
		end
	end)
end


local function SetCharacterCollide(character,ShouldCollide)
	local group = (ShouldCollide and DefaultCollisionGroup or CharacterCollisionGroup)
	for _,part in ipairs(character:GetDescendants()) do
		if (part:IsA("BasePart")) then
			part.Massless = not ShouldCollide
			physicsService:SetPartCollisionGroup(part, group)
		end
	end
end

local function BodyTouched(part)
	
	if (seat.Occupant or cooldown ~= 0) then return end
	
	local character = part.Parent 
	local player = game.Players:GetPlayerFromCharacter(character)
	if (not player) then return end
	
	local humanoid = character:FindFirstChildOfClass("Humanoid")
	if (not humanoid) then return end
	
	seat:Sit(humanoid)
	OccupiedPlayer = player
	SetCharacterCollide(character,false)
	car.PrimaryPart:CanSetNetworkOwnership(player)
	OccupiedClientScript = carClientScript:Clone()
	OccupiedClientScript.Car.Value = car
	OccupiedClientScript.Parent = player.Backpack
	Cooldown(2)
end

local function OccupantChanged()
	if (seat.Occupant) then return end
	if (OccupiedPlayer.Character) then
		SetCharacterCollide(OccupiedPlayer.Character,true)
	end
	if (OccupiedClientScript.Parent) then
		OccupiedClientScript.Stop.Value = true
		local client = OccupiedClientScript
		delay(3, function()
			client:Destroy()
		end)
	end
	car.PrimaryPart:SetNetworkOwnershipAuto()
	OccupiedPlayer = nil
	OccupiedClientScript = nil
	Cooldown(3)
end

body.Touched:Connect(BodyTouched)
seat:GetPropertyChangedSignal("Occupant"):Connect(OccupantChanged)