# JointMotorOptions

> Talos 0.6 · Since 0.6

{@link Joint.setMotor}'s options.

Unwritten ones keep the current motor's.

## Signature

```ts
export interface JointMotorOptions {
  mode?: JointMotorMode
  maxForce?: number
  stiffness?: number
  damping?: number
}
```

Import: `import type { JointMotorOptions } from "@argus/api"`

## Members

| Member | Signature | Description |
|---|---|---|
| `mode` | `mode?: JointMotorMode` |  |
| `maxForce` | `maxForce?: number` |  |
| `stiffness` | `stiffness?: number` |  |
| `damping` | `damping?: number` |  |

## Example

The tested fixture `fixtures/host/door.ts`.

```ts
import type { Behavior } from "@argus/api"
// docs/API.md, "Joints": a door on a hinge that swings open while the player is near and closes
// behind them. Typechecked by packages/api's tests.
export default {
  update(ctx) {
    const player = ctx.world.find("player")
    const near = player !== null && ctx.entity.distanceTo(player) < 2
    ctx.joint?.setMotor(near ? Math.PI / 2 : 0, { mode: "position", maxForce: 200 })
  },
} satisfies Behavior
```