Difference between revisions of "Caterpillar"
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The '''Caterpillar''' is the first [[17c/45 orthogonal|17c/45]] [[spaceship]] that was constructed, and is the first [[Spaceship#Engineered spaceships|engineered spaceship]], making use of the [[17c/45 reaction]]. It was created via a combination of manually-constructed parts put together by [[:Category:Patterns found by David Bell|David Bell]], [[:Category:Patterns found by Jason Summers|Jason Summers]] and [[:Category:Patterns found by Gabriel Nivasch|Gabriel Nivasch]] and a computer-aided construction coded by Nivasch. The Caterpillar's construction took place over a long period of time, but it was completed on December 31, [[:Category:Patterns found in 2004|2004]]. | The '''Caterpillar''' is the first [[17c/45 orthogonal|17c/45]] [[spaceship]] that was constructed, and is the first [[Spaceship#Engineered spaceships|engineered spaceship]], making use of the [[17c/45 reaction]]. It was created via a combination of manually-constructed parts put together by [[:Category:Patterns found by David Bell|David Bell]], [[:Category:Patterns found by Jason Summers|Jason Summers]] and [[:Category:Patterns found by Gabriel Nivasch|Gabriel Nivasch]] and a computer-aided construction coded by Nivasch. The Caterpillar's construction took place over a long period of time, but it was completed on December 31, [[:Category:Patterns found in 2004|2004]]. It has 11,880,063 cells; this, however, can be reduced to 11,880,039 cells through trivial modification.<ref>{{cite web|url=http://www.conwaylife.com/forums/viewtopic.php?f=2&t=1258&start=75#p32418|title=Re: Caterpillar's little brother research|author=Dave Greene|date=28 June 2016|accessdate=2 July 2016}}</ref> | ||
Caterpillar is, in terms of its minimum 11,880,063 alive [[cell]]s, by far the largest interesting pattern that has been constructed in [[Conway's Game of Life|Life]]. By comparison, the [[Spartan universal computer-constructor]] has a larger bounding box, but only half a million live cells. The image to the right is zoomed out to a scale of 32 [[cell]]s per pixel and still only shows the top 3% of it. Encoded as an [[RLE]] file, it is over 29MB in size. Despite this, it moves at the speed of 17c/45, which is the fourth fastest orthogonal speed with a known spaceship. | Caterpillar is, in terms of its minimum 11,880,063 alive [[cell]]s, by far the largest interesting pattern that has been constructed in [[Conway's Game of Life|Life]]. By comparison, the [[Spartan universal computer-constructor]] has a larger bounding box, but only half a million live cells. The image to the right is zoomed out to a scale of 32 [[cell]]s per pixel and still only shows the top 3% of it. Encoded as an [[RLE]] file, it is over 29MB in size. Despite this, it moves at the speed of 17c/45, which is the fourth fastest orthogonal speed with a known spaceship. | ||
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==See also== | ==See also== | ||
*[[Centipede]] | *[[Centipede]] | ||
==References== | |||
<references /> | |||
==External links== | ==External links== | ||
Revision as of 12:22, 10 March 2018
| Caterpillar | |||||||
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| Pattern type | Spaceship | ||||||
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| Number of cells | 11880063 | ||||||
| Bounding box | 4195 × 330721 | ||||||
| Direction | Orthogonal | ||||||
| Period | 270 | ||||||
| Mod | 270 | ||||||
| Speed | 17c/45 | Unknown | ||||||
| Heat | 12114897.5 | ||||||
| Discovered by | Gabriel Nivasch David Bell Jason Summers | ||||||
| Year of discovery | 2004 | ||||||
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The Caterpillar is the first 17c/45 spaceship that was constructed, and is the first engineered spaceship, making use of the 17c/45 reaction. It was created via a combination of manually-constructed parts put together by David Bell, Jason Summers and Gabriel Nivasch and a computer-aided construction coded by Nivasch. The Caterpillar's construction took place over a long period of time, but it was completed on December 31, 2004. It has 11,880,063 cells; this, however, can be reduced to 11,880,039 cells through trivial modification.[1]
Caterpillar is, in terms of its minimum 11,880,063 alive cells, by far the largest interesting pattern that has been constructed in Life. By comparison, the Spartan universal computer-constructor has a larger bounding box, but only half a million live cells. The image to the right is zoomed out to a scale of 32 cells per pixel and still only shows the top 3% of it. Encoded as an RLE file, it is over 29MB in size. Despite this, it moves at the speed of 17c/45, which is the fourth fastest orthogonal speed with a known spaceship.
Gallery
- Caterpillar full.jpeg
The whole spaceship (512 cells/pixel)
Full view of caterpillar (click to view)
Videos
See also
References
- ↑ Dave Greene (28 June 2016). "Re: Caterpillar's little brother research". Retrieved on 2 July 2016.
External links
- "The 17c/45 Caterpillar spaceship". Gabriel Nivasch's Life page (January 2005). A "brief overview" of how the Caterpillar works (with illustrations and RLE files of parts), the pattern in RLE format, plus complete C++ & RLE sources for assembling it.
- "17c/45 "Caterpillar" spaceship". Jason Summer's Life page. A short summary of what the Caterpillar is with a few pictures, plus the pattern in RLE and .mc (macrocell) formats. Golly loads the macrocell file much more quickly than the RLE.
- The Caterpillar (glider 1) at David Eppstein's Glider Database
Categories:
- Patterns
- Spaceships with between 10,000,000 and 99,999,999 cells
- Periodic objects with minimum population between 10,000,000 and 99,999,999
- Patterns with between 10,000,000 and 99,999,999 cells
- Patterns found by Gabriel Nivasch
- Patterns found by David Bell
- Patterns found by Jason Summers
- Patterns found in 2004
- Outer-totalistically endemic patterns
- Spaceships
- Spaceships with period 270
- Orthogonal spaceships
- Spaceships with speed 17c/45
- Spaceships with heat between 10,000,000 and 99,999,999
- Spaceships with mod 270
- Non-monotonic spaceships
- Engineered spaceships