Difference between revisions of "Salvo"

From LifeWiki
Jump to navigation Jump to search
(Defined P2 slow salvos in contrast to P1)
(links)
Line 1: Line 1:
 
{{Glossary}}
 
{{Glossary}}
A '''salvo''' is a collection of [[spaceship]]s (usually [[glider]]s) that are all coming from the same direction.<ref>{{Cite web|url=http://b3s23life.blogspot.com/2006/02/new-results-from-glue-2.html|title=New results from Glue 2|author=Dave Greene|date=February 24, 2006|accessdate=June 13, 2009|publisher=Conway's Life: Work in Progress}}</ref> A salvo is generally aimed at a target to produce a specific reaction -- for example, in a sliding-block memory or a slide gun, a salvo might move a block or other still life a step closer to the salvo source, or a step farther away.  Or two or more salvos may collide with each other to construct a complex object.
+
A '''salvo''' is a collection of [[spaceship]]s (usually [[glider]]s) that are all coming from the same direction.<ref>{{Cite web|url=http://b3s23life.blogspot.com/2006/02/new-results-from-glue-2.html|title=New results from Glue 2|author=Dave Greene|date=February 24, 2006|accessdate=June 13, 2009|publisher=Conway's Life: Work in Progress}}</ref> A salvo is generally aimed at a target to produce a specific [[reaction]] -- for example, in a [[sliding-block memory]] or a [[slide gun]], a salvo might move a [[block]] or other [[still life]] a step closer to the salvo source, or a step farther away.  Or two or more salvos may collide with each other to [[Glider synthesis|construct]] a complex object.
  
 
A '''slow salvo''' is a salvo in which the spaceships are far enough apart that any collision reaction affecting the n<sup>th</sup> spaceship has settled down by the time the (n+1)<sup>st</sup> spaceship arrives.
 
A '''slow salvo''' is a salvo in which the spaceships are far enough apart that any collision reaction affecting the n<sup>th</sup> spaceship has settled down by the time the (n+1)<sup>st</sup> spaceship arrives.

Revision as of 13:10, 27 November 2014

A salvo is a collection of spaceships (usually gliders) that are all coming from the same direction.[1] A salvo is generally aimed at a target to produce a specific reaction -- for example, in a sliding-block memory or a slide gun, a salvo might move a block or other still life a step closer to the salvo source, or a step farther away. Or two or more salvos may collide with each other to construct a complex object.

A slow salvo is a salvo in which the spaceships are far enough apart that any collision reaction affecting the nth spaceship has settled down by the time the (n+1)st spaceship arrives.

A P1 slow salvo is a slow salvo in which the intermediate settled-down stages are all period 1 (i.e., stable.) It is conjectured that any glider-constructible object can be produced by a P1 slow salvo aimed at a single block or other small still life -- though the number of gliders needed may be very large. Conversely, a P2 slow salvo may have intermediate stages containing P2 oscillators, allowing constructions with significantly fewer gliders on average. P3 and higher slow salvos are technically possible, but higher periods do not appear to make much difference to construction efficiency.

A monochromatic slow salvo is a slow salvo which contains only gliders of a single color.[2] For example, half-baked knightships reconstruct their glider seed constellations using monochromatic slow salvos.

References

  1. Dave Greene (February 24, 2006). "New results from Glue 2". Conway's Life: Work in Progress. Retrieved on June 13, 2009.
  2. Dave Greene (April 18, 2014). "Re: Serizawa - Linear Self Replicator.". Retrieved on July 29, 2014.