Difference between revisions of "Heavyweight spaceship"

From LifeWiki
Jump to navigation Jump to search
(fc=)
(correction, rm rulespecial, formatting)
 
(35 intermediate revisions by 9 users not shown)
Line 1: Line 1:
{{Spaceship
{{Spaceship
|name         = Heavyweight Spaceship
|name             = Heavyweight spaceship
|pname       = hwss
|pname           = hwss
|family       = XWSS
|family           = XWSS
|c           = 13
|c               = 13
|bx           = 7
|bx               = 7
|by           = 4
|by               = 4
|fc           = 15.7
|fc               = 15.7
|dir         = Orthogonal
|dir             = Orthogonal
|p           = 4
|p               = 4
|m           = 2
|m               = 2
|s           = c/2
|s               = c/2
|h           = 19
|z                = 2c/4
|discoverer   = John Conway
|h               = 19
|discoveryear = 1970
|discoverer       = John Conway
|rulemin     = B3/S23
|discoveryear     = 1970
|rulemax     = B3468/S23
|rulemin         = B3/S23
|rulespecial  = [[Conway's Game of Life|Conway Life]], [[HighLife]]
|rulemax         = B3468/S23
|synthesis   = 3
|isorulemin      = B3aij/S2eik3aijnr
|synthesisRLE = true
|isorulemax      = B2n345-a67e8/S234-aw5-ijy6-k7e
|life105      = true
|synthesis       = 3
|life106      = true
|synthesisRLE     = true
|plaintext   = true
|plaintext       = true
|rle         = true
|rle             = true
|animated     = true
|animated         = true
|viewerconfig = #C [[ TRACKLOOP 4 -1/2 0 THUMBSIZE 2 GPS 4 ]]
|viewerconfig     = #C [[ Y 1.5 TRACKLOOP 4 -1/2 0 THUMBSIZE 2 GPS 4 ]]
|apgcode     = xq4_27deee6
|apgcode         = xq4_27deee6
|pentadecathlonid = 13P4H2V0.1
}}
}}
The '''heavyweight spaceship''' (commonly abbreviated to '''HWSS''') or (rarely) '''big fish''' is the fourth most common [[spaceship]] after the [[glider]], [[lightweight spaceship]] and [[middleweight spaceship]]. It was found by [[:Category:Patterns found by John Conway|John Conway]] in [[:Category:Patterns found in 1970|1970]] and travels at a speed of [[c/2 orthogonal|c/2]] orthogonally. Its [[polyomino#Dominoes|domino]] [[spark]] can be used to stabilize several [[tagalong]]s, including [[sidecar]] and half of [[x66]]. It is one of only three known spaceships that is a [[polyomino]] in any of its phases.
The '''heavyweight spaceship''' (commonly abbreviated to '''HWSS''') or (rarely) '''big fish''' is the fourth most common [[spaceship]] after the [[glider]], [[lightweight spaceship]] and [[middleweight spaceship]]. It was found by [[John Conway]] in {{year|1970}} and travels at a speed of [[c/2 orthogonal]]ly. Its [[domino]] [[spark]] can be used to stabilize several [[tagalong]]s, including [[sidecar]] and half of [[x66]]. It is one of only three known spaceships that is a [[polyomino]] in any of its phases.


The side and tail sparks allow an HWSS to make changes to other objects without being affected itself -- a "[[Heisenburp]]" effect.  For example, gliders approaching from behind can be deleted in five different ways, or can be converted into a [[block]], [[B-heptomino]], or [[beehive]], as shown below.
== Construction ==
In {{year|1973}}, [[Douglas G. Petrie]] made the first 8-glider [[Glider synthesis|synthesis]] for a heavyweight spaceship, involving a 3-glider [[ship]], a 2-glider [[eater 1]], and three other gliders from different directions in the final step.<ref>{{CiteLifeline|vol=10|pages=page 5}}</ref> Later, a head-on [[3-glider collision]] producing a clean HWSS was found by [[Dave Buckingham]].<ref>{{CiteLifeline|vol=11|pages=page 18,19}}</ref>


==Commonness==
A number of different known ways to construct a heavyweight spaceship can be found in [[Mark Niemiec's database|Mark Niemiec's glider synthesis database]].<ref name="niemiec" />
 
There are four-object [[one-glider seed]]s for the HWSS, consisting of a [[loaf]], a [[beehive]] and two [[block]]s.<ref name="post8347" /><ref name="post8369" />
There are also three 1G seeds for the heavyweight spaceship in the [[octo3obj database]].<ref name="post152474" />
 
{{EmbedViewer
|rle          = x = 9, y = 8, rule = B3/S23
bo$2bo$3o$7b2o$6b2o$2b2o4bo$b2o$3bo!
|viewerconfig = #C [[ THEME Book ZOOM 10 AUTOSTART GPS 8 T 0 PAUSE 1 T 47 PAUSE 1 LOOP 48 ]]
|position    = center
|caption      = [[Three-glider collision|3G synthesis]] for the HWSS
|style        = width:300px;
}}
 
== Occurrence ==
{{related|List of common spaceships}}
The HWSS is the thirty-fifth most common object on [[Adam P. Goucher]]'s [[Catagolue]].<ref>{{citeCatagolueStats|June 24, 2016}}</ref>
The HWSS is the thirty-fifth most common object on [[Adam P. Goucher]]'s [[Catagolue]].<ref>{{citeCatagolueStats|June 24, 2016}}</ref>


It is the fourth most common natural spaceship that is not a [[flotilla]], being less common than the [[middleweight spaceship]] but about 171,000,000 times more common than the [[Coe ship]].
It is the fourth most common natural spaceship, being less common than the [[middleweight spaceship]] but about 355,000 times more common than [[MWSS on MWSS 1]].
 
There are 26 results in the [[octohash database]], 322 results in the octo3obj database,{{refn|group=note|There are two collisions (headerless RLEs are {{headerlessRLE|10b3o$6b3obo$11bo$2o$2o7bo$9bo$9bo!}} and {{headerlessRLE|10b3o$6b3obo$11bo$2o$2o$8b3o!}}), both converging to the same sequence, with two escaping heavyweight spaceships. The final population is 425.}} and 30 [[three-glider collision]]s in the octo3g database with at least one escaping HWSS.
 
== Interactions with other objects ==
The side and tail sparks allow an HWSS to make changes to other objects without being affected itself -- a "[[Heisenburp]]" effect.  For example, gliders approaching from behind can be [[fly-by deletion|deleted]] in five different ways, or can be converted into a [[block]], [[B-heptomino]], or [[beehive]], that can be [[reanimation|reanimated]] to make [[catch and throw]] technologies, as shown below.
 
{{EmbedViewer
|pname        = hwssglidercollisions
|viewerconfig = #C [[ THUMBSIZE 2 WIDTH 1200 HEIGHT 600 ZOOM 12 GPS 5 ]]
|position    = center
|caption      = First row: the five ways to delete a forward glider with an HWSS. Second row: three HWSS Heisenburp reactions with a forward glider
|style        = width:300px;
}}
 
Two HWSSes can escort XWSS-like objects that would otherwise be unstable, forming a c/2 spaceship. Two similar examples are shown below.
{{gallery top}}
{{gallery item|{{EmbedViewer
|pname        = 51p20h10v0
|viewerconfig = #C [[ GPS 5 TRACKLOOP 20 -1/2 0 THUMBSIZE 3 WIDTH 800 HEIGHT 560 ]]
|position    = center
|caption      = Two HWSSes escorting an otherwise unstable object, creating spaceship 51P20H10V0
|style        = width:300px;
|apgcode      = xq20_gocowo211vwgocoz7ffy08ggfw7ff
}}}}
{{gallery item|{{EmbedViewer
|pname        = 50p20h10v0.1
|viewerconfig = #C [[ GPS 5 TRACKLOOP 20 -1/2 0 THUMBSIZE 3 WIDTH 800 HEIGHT 560 ]]
|position    = center
|caption      = Two HWSSes escorting an otherwise unstable object, creating spaceship 51P20H10V0.1 ('''Very long Coe ship between two HWSS'''<ref group="note">according to Mark Niemiec: https://conwaylife.com/ref/mniemiec/flotilla.htm#ss-3c</ref>)
|style        = width:300px;
|apgcode      = xq20_gocow211vwgocoz7ffxgwvw7ff
}}}}
{{gallery bottom}}
 
== Gallery ==
<gallery widths="360px" style="text-align:center;">
File:HWSS eaters.png|Three heavyweight spaceship [[eater]]s. The second one is [[honey bit]] and the third [[killer toads]]
</gallery>


==Image gallery==
== Notes ==
{|
<references group="note"/>
|-
|[[Image:HWSS_eaters.png|framed|left|Three Heavyweight spaceship eaters<br/>]]
|[[Image:HWSSglidercollisionsample.png|framed|left|Example collisions between HWSS and forward-traveling glider<br/>{{JavaRLE|hwssglidercollisionsample}}]]
|}


==References==
== See also ==
<references/>
* [[Fake xWSS]]
* [[Lightweight spaceship]], [[Middleweight spaceship]]
* [[LWSS on HWSS 1]], [[MWSS on HWSS 1]], [[HWSS on HWSS 1]]
* [[Overweight spaceship]]
* [[Heavyweight emulator]]
* [[Ellison p4 HW emulator]]
* [[Ellison p4 HW emulator hybrid]]
* [[Heavyweight volcano]]


==See also==
== References ==
*[[Fake xWSS]]
<references>
*[[Lightweight spaceship]]
<ref name="niemiec">{{LinkNiemiec|ss.htm#ss-13|The 1 thirteen-bit spaceship|rle=ss/13hw.rle|nobullet=nobullet}}</ref>
*[[Middleweight spaceship]]
<ref name="post8347">{{LinkForumThread
*[[Overweight spaceship]]
|format    = ref
|p        = 8347
|title    = Re: Blockic Seeds
|author    = Extrementhusiast
|date      = June 24, 2013
}}</ref>
<ref name="post8369">{{LinkForumThread
|format    = ref
|p        = 8369
|title    = Re: Blockic Seeds
|author    = knightlife
|date      = June 28, 2013
}}</ref>
<ref name="post152474">{{LinkForumThread
|format  = ref
|p        = 152474
|title    = Re: Octohash fingerprints
|author  = Dave Greene
|date    = October 21, 2022
}}</ref>
</references>


==External links==
== External links ==
{{LinkWeisstein|HeavyweightSpaceship.html}}
* {{LinkLexicon|lex_h.htm#hwss|name=HWSS}}
{{LinkLexicon|lex_h.htm#hwss}}
* {{LinkCatagolue|xq4_27deee6}}
{{LinkCatagolue|xq4_27deee6}}
* {{LinkPentadecathlonObject|13P4H2V0.1}}
{{LinkNiemiec|ss.htm#ss-13|patternname=The 1 thirteen-bit spaceship}}
{{LinkPentadecathlonObject|13P4H2V0.1}}


[[Category:Polyominoes]]
[[Category:Glide symmetric spaceships]]
[[Category:Glide symmetric spaceships]]
[[Category:Domino sparkers]]
__NOTOC__

Latest revision as of 00:36, 25 October 2023

Heavyweight spaceship
3b2o$bo4bo$o$o5bo$6o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]] #C [[ Y 1.5 TRACKLOOP 4 -1/2 0 THUMBSIZE 2 GPS 4 ]]
View animated image
View static image
Pattern type Spaceship
Family XWSS
Number of cells 13
Bounding box 7 × 4
Frequency class 15.7
Direction Orthogonal
Period 4
Mod 2
Speed c/2 | 2c/4
Heat 19
Discovered by John Conway
Year of discovery 1970

The heavyweight spaceship (commonly abbreviated to HWSS) or (rarely) big fish is the fourth most common spaceship after the glider, lightweight spaceship and middleweight spaceship. It was found by John Conway in 1970 and travels at a speed of c/2 orthogonally. Its domino spark can be used to stabilize several tagalongs, including sidecar and half of x66. It is one of only three known spaceships that is a polyomino in any of its phases.

Construction

In 1973, Douglas G. Petrie made the first 8-glider synthesis for a heavyweight spaceship, involving a 3-glider ship, a 2-glider eater 1, and three other gliders from different directions in the final step.[1] Later, a head-on 3-glider collision producing a clean HWSS was found by Dave Buckingham.[2]

A number of different known ways to construct a heavyweight spaceship can be found in Mark Niemiec's glider synthesis database.[3]

There are four-object one-glider seeds for the HWSS, consisting of a loaf, a beehive and two blocks.[4][5] There are also three 1G seeds for the heavyweight spaceship in the octo3obj database.[6]

x = 9, y = 8, rule = B3/S23 bo$2bo$3o$7b2o$6b2o$2b2o4bo$b2o$3bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ THEME Book ZOOM 10 AUTOSTART GPS 8 T 0 PAUSE 1 T 47 PAUSE 1 LOOP 48 ]]
3G synthesis for the HWSS
(click above to open LifeViewer)

Occurrence

See also: List of common spaceships

The HWSS is the thirty-fifth most common object on Adam P. Goucher's Catagolue.[7]

It is the fourth most common natural spaceship, being less common than the middleweight spaceship but about 355,000 times more common than MWSS on MWSS 1.

There are 26 results in the octohash database, 322 results in the octo3obj database,[note 1] and 30 three-glider collisions in the octo3g database with at least one escaping HWSS.

Interactions with other objects

The side and tail sparks allow an HWSS to make changes to other objects without being affected itself -- a "Heisenburp" effect. For example, gliders approaching from behind can be deleted in five different ways, or can be converted into a block, B-heptomino, or beehive, that can be reanimated to make catch and throw technologies, as shown below.

x = 90, y = 38, rule = B3/S23 7b3o18bo$6bo2bo17b3o$9bo16b2obo17b3o$5bo3bo16b3o18bo2bo$5bo3bo16b3o18b o19b3o18bo$b2o6bo11b2o3b3o12b2o4bo3bo9b2o4bo2bo10b2o4b3o$obo3bobo11bob o4b2o11bobo4bo3bo8bobo4bo12bobo3b2obo$2bo19bo19bo4bo14bo4bo3bo10bo3b3o $48bobo16bo3bo14b3o$67bo18b3o$68bobo16b2o20$27b3o$27bo2bo17bo19bo$27bo 19b3o17b3o$27bo3bo15bob2o15b2obo$27bo3bo16b3o15b3o$21b2o4bo13b2o5b3o 10b2o3b3o$20bobo5bobo9bobo5b3o9bobo3b3o$22bo19bo5b2o12bo4b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ THUMBSIZE 2 WIDTH 1200 HEIGHT 600 ZOOM 12 GPS 5 ]]
First row: the five ways to delete a forward glider with an HWSS. Second row: three HWSS Heisenburp reactions with a forward glider
(click above to open LifeViewer)
RLE: here Plaintext: here

Two HWSSes can escort XWSS-like objects that would otherwise be unstable, forming a c/2 spaceship. Two similar examples are shown below.

x = 10, y = 18, rule = B3/S23 6b2o$4bo4bo$3bo$3bo5bo$3b6o4$b2o$2ob7o$b8o$2b6o2$6b2o$4bo4bo$3bo$3bo5b o$3b6o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ GPS 5 TRACKLOOP 20 -1/2 0 THUMBSIZE 3 WIDTH 800 HEIGHT 560 ]]
Two HWSSes escorting an otherwise unstable object, creating spaceship 51P20H10V0
(click above to open LifeViewer)
RLE: here Plaintext: here
Catagolue: here
x = 10, y = 17, rule = B3/S23 6b2o$4bo4bo$3bo$3bo5bo$3b6o4$b2o$2ob7o$b9o$2b8o$6b2o$4bo4bo$3bo$3bo5bo $3b6o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ GPS 5 TRACKLOOP 20 -1/2 0 THUMBSIZE 3 WIDTH 800 HEIGHT 560 ]]
Two HWSSes escorting an otherwise unstable object, creating spaceship 51P20H10V0.1 (Very long Coe ship between two HWSS[note 2])
(click above to open LifeViewer)
RLE: here Plaintext: here
Catagolue: here


Gallery

Notes

  1. ↑ There are two collisions (headerless RLEs are 10b3o$6b3obo$11bo$2o$2o7bo$9bo$9bo! and 10b3o$6b3obo$11bo$2o$2o$8b3o!), both converging to the same sequence, with two escaping heavyweight spaceships. The final population is 425.
  2. ↑ according to Mark Niemiec: https://conwaylife.com/ref/mniemiec/flotilla.htm#ss-3c

See also

References

  1. ↑ Robert Wainwright (June 1973). Lifeline, vol 10, page 5.
  2. ↑ Robert Wainwright (September 1973). Lifeline, vol 11, page 18,19.
  3. ↑ The 1 thirteen-bit spaceship at Mark D. Niemiec's Life Page (download pattern file: ss/13hw.rle)
  4. ↑ Extrementhusiast (June 24, 2013). Re: Blockic Seeds (discussion thread) at the ConwayLife.com forums
  5. ↑ knightlife (June 28, 2013). Re: Blockic Seeds (discussion thread) at the ConwayLife.com forums
  6. ↑ Dave Greene (October 21, 2022). Re: Octohash fingerprints (discussion thread) at the ConwayLife.com forums
  7. ↑ Adam P. Goucher. "Statistics". Catagolue. Retrieved on June 24, 2016.

External links

Retrieved from "https://conwaylife.com/w/index.php?title=Heavyweight_spaceship&oldid=139544"