[Home](./index.md) > [server](./server.md) > [BaseRigidBodyOptions](./server.baserigidbodyoptions.md) > [simulation](./server.baserigidbodyoptions.simulation.md) ## BaseRigidBodyOptions.simulation property The simulation the rigid body is in. If provided, the rigid body will be automatically added to the simulation. **Signature:** ```typescript simulation?: Simulation; ```