A mod for the game Factorio, places rotated/mirrored entities around specified points.
The purpose of this mod is to speed up development of blueprints, particularly for rail junctions.
Craft a "Symmetry Center" item. Place it in the world as a "Symmetry Center" entity. Place some entities nearby and see them duplicated around the center. Remove those entities and the duplicates will be removed. Creation and removal use construction ghosts and deconstruction marks by default. Enabling direct creation and removal (cheating) requires enabling a new map setting and player setting.
The Symmetry Center entity is a constant combinator. Setting signals within it will control its behavior as follows:
- C Move the center of symmetry to a corner/edge of the tile. 0 = north edge, 1 = northeast corner, ..., 6 = west edge, 7 = northwest corner.
- D Set the max distance from the center to copy entities. Default is 64. Negative numbers are circular distance, positive square.
- R Rail entities are always placed on a 2x2 grid. This setting controls whether other entities honor that grid. -1 is never. 1 is always. 0 is not until a rail entity is placed then it automatically becomes 1.
- S Type of Symmetry. 0 = None. Positive = rotation, 4 and 2 are useful, other numbers are just pretty. Negative = mirror, -1 = east/west, -2 = north/south, -4 and -8 are diagonal, add together for multiple mirrors.
- item Positive signal will copy only the signaled item(s). Negative signal will exclude the signaled item(s) from copying.