Sidecar

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Sidecar
bo6b$o5bob$o5bob$5obob2$4b2o2b$2bo4bo$bo6b$bo5bo$b6o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]] #C [[ ZOOM 24 TRACKLOOP 4 -1/2 0 THUMBSIZE 2 GPS 2 HEIGHT 500 ]]
Pattern type Tagalong
Spaceship
Number of cells 24
Bounding box 9×12
Direction Orthogonal
Period 4
Mod 4
Speed c/2
Speed (unsimplified) 2c/4
Heat 33.5
Discovered by Hartmut Holzwart
Year of discovery 1992

Sidecar is a c/2 orthogonal spaceship that was found by Hartmut Holzwart in 1992. Alternatively, it may refer just to the tagalong (displayed in green, in one phase it is made of a LWSS and a banana spark) that is attached to the heavyweight spaceship. One heavyweight spaceship can support two sidecars.

The sidecar can be destroyed by an eater 1 in a way that doesn't affect the heavyweight spaceship, which can be then destroyed by known means, e. g. with the block and pond.

More generally but uncommonly, a sidecar can refer to any spaceship component which is unstable on its own but can function when attached to the side of a spaceship, in much the same way that a tagalong can attach to the back of a spaceship or a pushalong to the front of a spaceship.[1]

Commonness

It first appeared naturally on May 12, 2019, in a G1 haul submitted to Catagolue by Rob Liston.[2]

Synthesis and constructions

There is a 5-glider component that adds a sidecar to a HWSS, so the entire spaceship can be synthesised with 8 gliders. The easy synthesis has allowed for a period-60 sidecar gun[3] and a stable glider-to-sidecar converter with repeat time 158 ticks.[4]

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Period-60 sidecar gun by Jason Summers on March 7, 2000
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RLE: here Plaintext: here

See also

References

  1. David Bell (December 25, 2017). Re: Cordership made using individual switch engines (discussion thread) at the ConwayLife.com forums
  2. Ian07 (May 12, 2019). Re: Soup search results (discussion thread) at the ConwayLife.com forums
  3. Jason Summers' jslife pattern collection. Retrieved on June 7, 2009.
  4. Goldtiger997 (April 13, 2017). Re: Stable signal converters (discussion thread) at the ConwayLife.com forums

External links

  • 24P4H2V0.7 at Heinrich Koenig's Game of Life Object Catalogs