Entity Symmetry

by sparr
Places mirrored/rotated entities around a specified point. Configuration options in README.
11 months ago
0.16 - 0.17
Owner: sparr
Source: sparr/factorio-mod-entity-symmetry
Homepage: http://github.com/sparr/factorio-mod-...
License: MIT
Created: 1 year, 11 months ago
Latest Version: 0.17.1 (11 months ago)
Factorio version: 0.16 - 0.17
Downloaded: 948 times

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.


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,
    -3 = both.
  • item
    Positive signal will copy only the signaled item(s). Negative signal will
    exclude the signaled item(s) from copying.

Bug reports on the mod portal may not be seen. Github issues are preferred.