How do I make a driveable boat?

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#1

I wanna make a driveable boat but I have no idea how I can make one. I tried learning to by using freemodels like the cars you’d see in the places roblox offers you but I understood no math behind it. Can anyone help?

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#2

Alright, I got you.
Here is guide how to make boat. WIth explanations

1. Creating the Boat Model

  • Build the Hull: Start by designing a basic hull for your boat. You can use a simple rectangular part or a more detailed model.
  • Add a Motor: Attach a part or a BodyVelocity to represent the boat’s motor. This will be responsible for moving the boat forward.

2. Implementing Buoyancy

  • Buoyancy is what keeps your boat floating on water. You can achieve this by using BodyForce or BodyPosition objects that apply an upward force to counteract gravity.
  • Script Example:
    local boat = script.Parent
local buoyancyForce = Instance.new("BodyForce", boat)
local waterDensity = 1 -- Adjust based on the water you're using
local boatMass = boat:GetMass()

buoyancyForce.Force = Vector3.new(0, waterDensity * boatMass * workspace.Gravity, 0)

3. Adding Movement

  • Forward Movement: Use a BodyVelocity or LinearVelocity object to move the boat forward. You can control the speed based on player input.
  • Steering: Implement steering by applying torque to the boat. This can be done using a BodyAngularVelocity object.
  • Script Example:
    local boat = script.Parent
local velocity = Instance.new("BodyVelocity", boat)
local angularVelocity = Instance.new("BodyAngularVelocity", boat)

local speed = 50
local turningSpeed = 10

velocity.Velocity = boat.CFrame.LookVector * speed

-- Steering based on input (WASD or arrow keys)
local function onSteer(input)
    if input == "Left" then
        angularVelocity.AngularVelocity = Vector3.new(0, -turningSpeed, 0)
    elseif input == "Right" then
        angularVelocity.AngularVelocity = Vector3.new(0, turningSpeed, 0)
    else
        angularVelocity.AngularVelocity = Vector3.new(0, 0, 0)
    end
end

Also, if you didn’t understand, I found a video for you https://www.youtube.com/watch?v=sa6YAw7e39A&pp=ygUtaG93IHRvIG1ha2UgYSBkcml2YWJsZSBib2F0IGluIHJvYmxveCBzdHVkaW8g
I hope it will help you! Good luck!

#3

I’ll check it out! But I also wanna ask, can you use any type of force on anchored parts or does it have to be unanchored?

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#4

Such as BodyVelocity, BodyForce, BodyGyro, etc., only affect unanchored parts.