?: Vec2 | number The direction the sentry is pointing to. If undefined, direction has no influence.
?: number The field of view of the sentry in degrees. If undefined, defaults to human fov of 200 degrees.
?: boolean If true, line of sight matters. This means that objects which are blocked from view by areas are invisible.
?: string[] When using line of sight, the objects which are transparent for the ray. Include at least a tag identifying the sentry.
?: number The frequency of checking, defaults to every second.