Sidewinder
| Sidewinder | |||||||||
| View static image | |||||||||
| Pattern type | Tagalong Spaceship | ||||||||
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| Number of cells | 32 | ||||||||
| Bounding box | 14 × 18 | ||||||||
| Direction | Orthogonal | ||||||||
| Period | 20 (mod: 10) | ||||||||
| Speed | c/2 | 10c/20 | ||||||||
| Heat | 38.8 | ||||||||
| Kinetic symmetry | n-c | ||||||||
| Discovered by | Jason Summers | ||||||||
| Year of discovery | 2006 | ||||||||
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32P20H10V0 (or sidewinder as named by Jeremy Tan[1][note 1]) is a glide-symmetric c/2 orthogonal spaceship with period 20 found by Jason Summers on April 8, 2006.[2][3] It is currently the period-20 spaceship with the lowest known population.
This spaceship is a puffer 2 whose output is suppressed by a glider, resulting in the glider being effectively dragged along at a speed of c/2, twice its usual speed. Due to the fact that the puffer engine does not modify the evolution of the supporting spaceships in any way, it can be classified as a true tagalong.
Variants
The central puffer engine requires dot sparks in order to continue moving. The standard sidewinder uses sparks from two lightweight spaceships, however one or both can be provided by the upper, more distant spark of a middleweight spaceship instead.
| Image | Cells | Supporting spaceships apgcode |
Synth. cost |
|---|---|---|---|
|
32 | LWSS, LWSS xq20_27de6zw8smx2ceaz0ggz13673 |
10 |
|
34 | LWSS, MWSS xq20_0sighgazzw79dx429azsigga |
12 |
|
36 | MWSS, MWSS xq20_27dee6z0gocx4oskzw11z4eqssc |
13 |
Glider synthesis
An 11-glider synthesis of the dual-LWSS version of this spaceship was found by Summers in October 2007.[4] It was later reduced to 10 gliders by replacing a 4-glider LWSS edge-shooter with one of the 3-glider recipes that fits.
See also
Notes
- ↑ The name was formerly assigned to a small alien spaceship, glider 1196 on David Eppstein's glider database.
References
- ↑ Jeremy Tan (June 13, 2019). Re: Small Spaceship Syntheses (discussion thread) at the ConwayLife.com forums
- ↑ Misc. New Oscillators and Spaceships at Game of Life News. Posted by Heinrich Koenig on April 9, 2006.
- ↑ Matthias Merzenich (April 18, 2018). "jslife-moving pattern collection". Retrieved on November 18, 2020.
- ↑ Spaceship constructions at Game of Life News. Posted by Heinrich Koenig on October 6, 2007.
External links
- Sidewinder at Adam P. Goucher's Catagolue
- 32P20H10V0.1 at Heinrich Koenig's Game of Life Object Catalogs
- Patterns
- Spaceships with 32 cells
- Periodic objects with minimum population 32
- Patterns with 32 cells
- Patterns found by Jason Summers
- Patterns found in 2006
- Patterns that can be constructed with 10 gliders
- Spaceships
- Tagalongs
- Spaceships with period 20
- Orthogonal spaceships
- Spaceships with speed c/2
- Spaceships with unsimplified speed 10c/20
- Spaceships with heat 38
- Spaceships with mod 10
- Spaceships with n-c symmetry