# AnimParam

> Talos 0.7 · Since 0.6

## Fields

| Field | Type | Required | Default | Allowed values | Description |
|---|---|---|---|---|---|
| `name` | `string` | yes |  |  |  |
| `value` | `number` | yes |  |  | Value before anything writes one. |
| `source` | `AnimParamSource` | no |  | `speed`, `strafeX`, `strafeY`, `verticalSpeed`, `grounded`, `inputSpeed`, `inputStrafeX`, `inputStrafeY` |  |
| `damp` | `number` | no |  |  | Seconds the parameter takes to follow what is written to it, by exponential smoothing: after `damp` seconds it has covered about 63% of a step, after three times that 95%. A stick pressed or let go is a step from 0 to full speed in one tick, and a blend tree on it would snap the pose from idle to run with it; 0.1 to 0.2 turns that snap into a blend. Applies to the engine's `source` and to `ctx.animator.param` alike; reads return the smoothed value. Absent or 0 follows at once. Finite and 0 or more (`animator-damp-invalid`). |

## See also

- `AnimParamSource`