[Home](./index.md) > [server](./server.md) > [BaseColliderOptions](./server.basecollideroptions.md) ## BaseColliderOptions interface The base options for a collider. **Signature:** ```typescript export interface BaseColliderOptions ``` ## Properties

Property	Modifiers	Type	Description
[bounciness?](./server.basecollideroptions.bounciness.md)		number	_(Optional)_ The bounciness of the collider.
[bouncinessCombineRule?](./server.basecollideroptions.bouncinesscombinerule.md)		[CoefficientCombineRule](./server.coefficientcombinerule.md)	_(Optional)_ The bounciness combine rule of the collider.
[collisionGroups?](./server.basecollideroptions.collisiongroups.md)		[CollisionGroups](./server.collisiongroups.md)	_(Optional)_ The collision groups the collider belongs to.
[enabled?](./server.basecollideroptions.enabled.md)		boolean	_(Optional)_ Whether the collider is enabled.
[flags?](./server.basecollideroptions.flags.md)		number	_(Optional)_ The flags of the collider if the shape is a trimesh
[friction?](./server.basecollideroptions.friction.md)		number	_(Optional)_ The friction of the collider.
[frictionCombineRule?](./server.basecollideroptions.frictioncombinerule.md)		[CoefficientCombineRule](./server.coefficientcombinerule.md)	_(Optional)_ The friction combine rule of the collider.
[isSensor?](./server.basecollideroptions.issensor.md)		boolean	_(Optional)_ Whether the collider is a sensor.
[mass?](./server.basecollideroptions.mass.md)		number	_(Optional)_ The mass of the collider.
[onCollision?](./server.basecollideroptions.oncollision.md)		[CollisionCallback](./server.collisioncallback.md)	_(Optional)_ The on collision callback for the collider.
[parentRigidBody?](./server.basecollideroptions.parentrigidbody.md)		[RigidBody](./server.rigidbody.md)	_(Optional)_ The parent rigid body of the collider.
[relativePosition?](./server.basecollideroptions.relativeposition.md)		[Vector3Like](./server.vector3like.md)	_(Optional)_ The relative position of the collider. Relative to parent rigid body.
[relativeRotation?](./server.basecollideroptions.relativerotation.md)		[QuaternionLike](./server.quaternionlike.md)	_(Optional)_ The relative rotation of the collider. Relative to parent rigid body.
[shape](./server.basecollideroptions.shape.md)		[ColliderShape](./server.collidershape.md)	The shape of the collider.
[simulation?](./server.basecollideroptions.simulation.md)		[Simulation](./server.simulation.md)	_(Optional)_ The simulation the collider is in, if provided the collider will automatically be added to the simulation.
[tag?](./server.basecollideroptions.tag.md)		string	_(Optional)_ An arbitrary identifier tag of the collider. Useful for your own logic.