Tagalong

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A tagalong (or less commonly a tugalong[1]) is an object that is not a spaceship by itself, but can be attached to one or more spaceships to form a larger spaceship. For example, Canada goose is a spaceship made by attaching a tagalong to the back of a glider. Well-known tagalongs include Schick engine, fly, sidecar and sparky.

A strict tagalong is one that does not affect the tagged spaceship in any way. For example, the lobster is not a strict tagalong, but Orion 2 is.

Pushalong

A pushalong is a tagalong that is located at the front of the spaceship that it is attached to. Pushalong 1 is an example that was found by David Bell in 1992 that can be attached to the front of a middleweight spaceship.[2] Another pushalong can be seen at Bulldozer. Further notable examples include cottonmouth and the extra wings for lobster.

3bo7b$bo2bo6b$o3bo6b$o3bo6b$2obo7b$5b2o4b$2bo2b2o4b$4bo6b$7b3ob$6b5o$ 5b2ob3o$6b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ THUMBSIZE 2 TRACKLOOP 4 -1/2 0 GPS 15 ]]
A pushalong
(click above to open LifeViewer)
RLE: here Plaintext: here

Sidecar

A sidecar is a tagalong that is located to the side of the spaceship that it is attached to. Sidecar is a notable example which attaches to a heavyweight spaceship; there also exist sidecars for Corderships, middleweight spaceships and 7WSSes.[3]

bo6b$o5bob$o5bob$5obob2$4b2o2b$2bo4bo$bo6b$bo5bo$b6o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ THUMBSIZE 2 TRACKLOOP 4 -1/2 0 GPS 15 ]]
A sidecar
(click above to open LifeViewer)
RLE: here Plaintext: here

Still life tagalong

A still life tagalong is a tagalong that takes the form of a still life in at least one phase. An example is shown below in which the tagalong looks like a pond.[4] The smallest known example, which is also the only known natural example, is MWSS and HWSS dragging block. Certain other such reactions, such as a block being pulled by two sparkers of speed (1,0)c/p (p for period, p ≥ 4), are known.[5]

x = 19, y = 17, rule = b3/s23 2b2o15b$b2ob2o13b$2b4o13b$3b2o14b2$3b5o11b$2b7o10b$b2ob5o10b$2b2o15b2$ 8bobo5b2ob$6bo4bo3bo2bo$6b2o5bobo2bo$bo2bo2b4obo3b2ob$o7b2o9b$o3bo14b$ 4o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ THUMBSIZE 2 TRACKLOOP 8 -1/2 0 GPS 15 ]]
A still life tagalong
(click above to open LifeViewer)
RLE: here Plaintext: here
Catagolue: here

See also

References

  1. ↑ "Tugalong". The Life Lexicon. Stephen Silver. Retrieved on May 14, 2009.
  2. ↑ "Pushalong". The Life Lexicon. Stephen Silver. Retrieved on May 22, 2009.
  3. ↑ David Bell (December 25, 2017). Re: Cordership made using individual switch engines (discussion thread) at the ConwayLife.com forums
  4. ↑ "Still life tagalong". The Life Lexicon. Stephen Silver. Retrieved on May 22, 2009.
  5. ↑ Matthias Merzenich (July 26, 2019). Re: Spaceship Discussion Thread (discussion thread) at the ConwayLife.com forums


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