@threlte/rapier

Basic Vehicle Controller

This recipe helps you get started with a basic vehicle controller.

The car has a <RigidBody> component for the body to which four axles are attached with either a RevoluteImpulseJoint for the steered wheels or a FixedImpulseJoint for the unsteered back wheels.

Each wheel is attached to an axle with a RevoluteImpulseJoint and the back wheels are configured to be a motor.

To increase the decoupling of joint rigid bodies, the solver iterations are increased by a factor of 100.

The car can be controlled with the WASD keys. The spacebar activates the handbreak.

The property dominance on <RigidBody> components can be used to make objects more or less vulnerable to impacts of the car.

Tips:

• Experiment with front wheel drive or all wheel drive (property isDriven on <Axle> component)
• Play around with the mass properties of the colliders
• Make an all wheel steered vehicle
• Increase or decrease the power output of the wheel motors
• Change the motor model from AccelerationBased to ForceBased (you will need to adapt the power output)
• Experiment with different wheel collider shapes
• Increase or decrease the scale of the car
• Move the axles and observe the maneuverability