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# Factorio Prototype Docs Version 2.0.77

# RailSignalStaticSpriteLayer - Prototype Docs

## RailSignalStaticSpriteLayer :: struct

## Properties

- default
- sorted

sprites | :: Animation |
render_layer optional | :: RenderLayer |
hide_if_simulation optional | :: boolean |
hide_if_not_connected_to_rails optional | :: boolean |
shifts optional | :: array[MapPosition] | Must be an empty array or contain exactly 16 values.
Must be an empty array or contain exactly 16 values.
align_to_frame_index optional | :: array[uint8] |

sprites | :: Animation |
align_to_frame_index optional | :: array[uint8] |
hide_if_not_connected_to_rails optional | :: boolean |
hide_if_simulation optional | :: boolean |
render_layer optional | :: RenderLayer |
shifts optional | :: array[MapPosition] | Must be an empty array or contain exactly 16 values.
Must be an empty array or contain exactly 16 values.

## Properties

### sprites :: Animation

### render_layer :: RenderLayer optional

Default: `"rail-chain-signal-metal"`

### hide_if_simulation :: boolean optional

Default: `true`

### hide_if_not_connected_to_rails :: boolean optional

Default: `true`

### shifts :: array[MapPosition] optional

Must be an empty array or contain exactly 16 values.

### align_to_frame_index :: array[uint8] optional

Type used in

- RailSignalPictureSet::rail_piece
- RailSignalPictureSet::upper_rail_piece