Joint Components: HingeJoint Motor Modes, BreakForce, Body Resolution, and Joint Creation Timing

joint.Body = targetGameObject;       // the body to constrain
joint.AnchorBody = anchorGameObject; // the anchor (defaults to this GameObject)
joint.EnableCollision = false;       // allow collision between the two bodies
joint.BreakForce = 0f;               // linear force to break the joint (0 = unbreakable)
joint.BreakTorque = 0f;              // angular force to break the joint
joint.IsBroken                       // read-only: is the joint broken?
joint.LinearStress                   // current linear impulse on the joint
joint.AngularStress                  // current angular impulse on the joint
joint.OnBreak                        // Action callback when joint breaks

joint.Break();    // manually break the joint
joint.Unbreak();  // restore the joint

// No motor (just friction)
hinge.Motor = HingeJoint.MotorMode.Disabled;
hinge.Friction = 0.5f;

// Spring to a target angle
hinge.Motor = HingeJoint.MotorMode.TargetAngle;
hinge.TargetAngle = 90f;
hinge.Frequency = 1.0f;
hinge.DampingRatio = 1.0f;

// Constant velocity motor
hinge.Motor = HingeJoint.MotorMode.TargetVelocity;
hinge.TargetVelocity = 180f;  // degrees per second
hinge.MaxTorque = 1000f;

// Angle limits
hinge.MinAngle = -90f;
hinge.MaxAngle = 90f;

// Read current state
float angle = hinge.Angle;
float speed = hinge.Speed;
Vector3 axis = hinge.Axis;