# EnvironmentCloudsOverride

> Talos next · Since next

Fields of `meta.environment.sky.clouds` (an atmosphere sky's layer), the ones a weather change reaches for named; any other may be written too.

## Signature

```ts
export interface EnvironmentCloudsOverride {
  /** `clear`, `fair`, `broken`, `overcast` or `storm`. */
  preset?: string | null
  /** How much of the sky the layer covers, 0..1. */
  coverage?: number | null
  /** Multiplier on the preset's density. */
  density?: number | null
  [field: string]: unknown
}
```

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

## Members

| Member | Signature | Description |
|---|---|---|
| `preset` | `preset?: string \| null` | `clear`, `fair`, `broken`, `overcast` or `storm`. |
| `coverage` | `coverage?: number \| null` | How much of the sky the layer covers, 0..1. |
| `density` | `density?: number \| null` | Multiplier on the preset's density. |

## Example

The tested fixture `fixtures/app/sliding-door.ts`.

```ts
import type { Behavior } from "@argus/api"

// Matches the `script` component on the door in `fixtures/contract/full20/scene.json`.
// Opens on the event named by `props.openOn`, which is also how the event path gets
// exercised by the component-coverage test.
export default {
  init(ctx) {
    ctx.state.open = false
    ctx.state.closed = ctx.entity.position
  },
  onEvent(ctx, ev) {
    if (ev.name === ctx.props.openOn) ctx.state.open = true
  },
  update(ctx, dt) {
    if (!ctx.state.open) return
    const closed = ctx.state.closed as [number, number, number]
    const target: [number, number, number] = [closed[0], closed[1] + 2.2, closed[2]]
    ctx.entity.moveToward(target, (ctx.props.speed as number) * dt)
  },
} satisfies Behavior
```