Version: 2023.2
  • C#


struct in UnityEngine


Implemented in:UnityEngine.PhysicsModule

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The JointMotor is used to motorize a joint.

For example the HingeJoint can be told to rotate at a given speed and force. The joint will then attempt to reach the velocity with the given maximum force.
Additional resources: HingeJoint.

using UnityEngine;

public class Example : MonoBehaviour { void Start() { HingeJoint hinge = GetComponent<HingeJoint>();

// Make the hinge motor rotate with 90 degrees per second and a strong force. JointMotor motor = hinge.motor; motor.force = 100; motor.targetVelocity = 90; motor.freeSpin = false; hinge.motor = motor; } }


forceThe motor will apply a force.
freeSpinIf freeSpin is enabled the motor will only accelerate but never slow down.
targetVelocityThe motor will apply a force up to force to achieve targetVelocity.