Vehicles

Set up Chaos Vehicle wheel and suspension assets.

What it’s for

Ask your assistant to set up the wheels and suspension for a Chaos Vehicles car. It can create wheel assets, tune them, attach them to a vehicle, and adjust the suspension on each wheel.

A drivable Chaos vehicle has a movement component with a list of wheels. Each wheel uses a wheel asset that sets its radius, braking, steering, springs and damping. Your assistant builds all of that from a plain-language request, so you do not have to click through the wheel asset editor and the component’s wheel list by hand.

For collision or physics assets that are not about wheels, use Physics and ragdolls.

Things you can ask

Create a front wheel asset

You get a new wheel asset with the tuning you asked for.

You: Make a steerable front wheel asset with a 16 cm radius and a 30 degree max steer angle.

Created /Game/Vehicles/BP_FrontWheel with a 16 cm radius and 30° of steering.

Attach the wheel to a vehicle

The vehicle uses your wheel asset on the bone you name.

You: Bind that front wheel to the FL_Wheel bone on BP_RaceCar as the first wheel.

BP_RaceCar’s first wheel now uses BP_FrontWheel on the FL_Wheel bone. The Blueprint is compiled.

Tune the suspension

The springs and damping change on every wheel of the vehicle.

You: Stiffen the suspension on all wheels of BP_RaceCar, with a higher spring rate and a bit more damping.

Stiffened all 4 wheels: spring rate 80000 and damping ratio 0.8.