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'''LifeViewer''' is a browser-based scriptable pattern viewer and editor used to simulate [[Life]] and a wide range of other 1D and 2D [[cellular automata]].
:''Not to be confused with the calendar app also called LifeViewer.''
'''LifeViewer''' is a free, [https://github.com/rowett/lifeviewer open-source], browser-based scriptable pattern viewer and editor used to simulate [[Life]] and a wide range of other 1D and 2D [[cellular automata]].


* If you are looking for script instructions, see [[LifeViewer/Scripts]]
* If you are looking for script instructions, see [[LifeViewer/Scripts]]
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* Ability to step back to earlier generations for all patterns and reverse playback for reversible Margolus and PCA patterns.
* Ability to step back to earlier generations for all patterns and reverse playback for reversible Margolus and PCA patterns.
* Random pattern and rule generation.
* Random pattern and rule generation.
* Real time auto-scaling [[#Population Graph|population graph]].
* Real time auto-scaling [[LifeViewer/User_Interface#Population_Graph|population graph]].
* [[#Annotations|Pattern annotation]] with Labels, Arrows, Lines and Polygons.
* [[LifeViewer/Scripts#Annotations|Pattern annotation]] with Labels, Arrows, Lines and Polygons.
* Programatically pasting cells onto the grid at defined intervals (for example: glider injection).
* Programatically pasting cells onto the grid at defined intervals (for example: glider injection).
* Ability to build patterns from RLE recipes with transformations.
* Ability to build patterns from RLE recipes with transformations.
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* [[Alternating rule]]s.
* [[Alternating rule]]s.
* [[Partitioned cellular automata]] (PCA) rules.
* [[Partitioned cellular automata]] (PCA) rules.
* [https://mathworld.wolfram.com/ElementaryCellularAutomaton.html Elementary] cellular automata (even numbers only).
* [https://mathworld.wolfram.com/ElementaryCellularAutomaton.html Elementary] cellular automata.
* [[LifeHistory|[R]History]] rules.
* [[LifeHistory|[R]History]] rules.
* [https://conwaylife.com/forums/viewtopic.php?f=7&t=4279#p88223 <nowiki>[R]Super</nowiki>] rules.
* [https://conwaylife.com/forums/viewtopic.php?f=7&t=4279#p88223 <nowiki>[R]Super</nowiki>] rules.
* [R]Investigator rules (a generalisation of [[Rule:StateInvestigator|StateInvestigator]]).
* [http://golly.sourceforge.net/Help/formats.html#rule RuleTable] rules (either inline or from a [[#Repository Rules|Rule Repository]]).
* [http://golly.sourceforge.net/Help/formats.html#rule RuleTable] rules (either inline or from a [[#Repository Rules|Rule Repository]]).
* Non-deterministic rules.
* Non-deterministic rules.
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[[ ZOOM 4 THUMBNAIL THUMBSTART EXCLUSIVEPLAY ]]}}
[[ ZOOM 4 THUMBNAIL THUMBSTART EXCLUSIVEPLAY ]]}}


: [https://mathworld.wolfram.com/ElementaryCellularAutomaton.html Elementary] cellular automata (even numbers only).
: [https://mathworld.wolfram.com/ElementaryCellularAutomaton.html Elementary] cellular automata.
:: Example: Wolfram 30 (W30) {{LV:Viewer|x = 1, y = 1, rule = W30:P100,40
:: Example: Wolfram 30 (W30) {{LV:Viewer|x = 1, y = 1, rule = W30:P100,40
o!
o!
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[[ ZOOM 4 THUMBNAIL THUMBSTART EXCLUSIVEPLAY ]]}}
[[ ZOOM 4 THUMBNAIL THUMBSTART EXCLUSIVEPLAY ]]}}


* [[LifeHistory|[R]History]] rules.
: [[LifeHistory|[R]History]] rules.
** Example: LifeHistory {{LV:Viewer|x = 457, y = 155, rule = LifeHistory
:: Example: LifeHistory {{LV:Viewer|x = 457, y = 155, rule = LifeHistory
59.3B64.B125.B$58.BFBF2B60.4BF122.3B$58.6BF.B.F.F.B.F.F.B.F.F.B.F.F.B
59.3B64.B125.B$58.BFBF2B60.4BF122.3B$58.6BF.B.F.F.B.F.F.B.F.F.B.F.F.B
.F.F.B.F.F.B.F.F.B.F.F.B.F.F.B.F7B5.BF.B.F.F.B.F.F.B.F.F.B.F.F.B.F.F.
.F.F.B.F.F.B.F.F.B.F.F.B.F.F.B.F7B5.BF.B.F.F.B.F.F.B.F.F.B.F.F.B.F.F.
Line 414: Line 416:
2.2O25.2S3.S.S.S.S3.2S8.2O3.O.O.O.O3.2O!
2.2O25.2S3.S.S.S.S3.2S8.2O3.O.O.O.O3.2O!
[[ ZOOM 1 THUMBNAIL THUMBSTART EXCLUSIVEPLAY ]]}}
[[ ZOOM 1 THUMBNAIL THUMBSTART EXCLUSIVEPLAY ]]}}
: [R]Investigator rules.
:: Example: B3S23Investigator {{LV:Viewer|x = 98, y = 57, rule = B3S23Investigator
35.R26.R$35.E26.E8$51.E$25.E20.E25.E$24.E21.E7.C18.E$23.E28.EBDE18.E$
45.CE5.2E$21.CD2.DE43.2ED2.DC$19.E3.DE18.C22.E3.D3ED3.E$42.EDBE4.ER
13.3E3.E$44.2E15.E3.D2.E2.D14.C.ECB$13.C30.ED3.E12.E3.E3.D.E11.CE.D2.
E$8.D4.D30.E3.E14.E2.D2E.C13.D.E.D$7.E4.D2.E28.D2.E17.D16.E2.D3.E$12.
E3.E28.D19.C15.E3.E$12.ED3.E27.C21.E12.E3.DE$13.E10.2E39.2DE4.2E10.E
6.E$11.E12.ED3.E34.3E.E3.DE$5.E17.2E3.E4.DE28.ED4.E3.2E17.E$10.E4.E7.
CD2.E3.CD2.DE24.ED2.DC3.E2.DC7.E4.E$14.E10.D46.D10.E$9.E3.E11.CE5.2E
19.E10.2E5.EC11.E3.E$26.D5.D.E14.E3.D9.E.D5.D$DA8.ECD2.DE9.ED3.DE2.E
14.E3.2E6.E2.ED3.DE9.ED2.DCE8.AD$DA11.DE4.2A6.CD.DC19.E2.DE10.CD.DC6.
2A4.ED11.AD$18.E.A2.C.E4.C22.D13.C.C4.C2.A.E$4.E6.E5.ED6.D2.E.E7.2A
13.2C3.2A7.E11.DE5.E6.E$5.E4.ED5.DE4D.E6.E5.E.A2.C12.C2.A.E5.E8.4DED
5.DE4.E$10.2ED3.DE.4EB.C6.E4.D22.D4.E8.B3E2.ED3.D2E$6.E3.DECD.DEC2.DE
2.E8.E3.E4D14.4DE3.E8.E6.CED.DCED3.E$7.E3.E.2E4.E5.C11.5EB12.B5E11.C
10.2E.E3.E$8.E2.D.CD5.D.EC.D4.ED2.DCE2D21.D.CD2.DE4.D2.ED6.DC.D2.E$
10.D.2E.DC3.E3.D2.E4.ED26.D3.DE4.E2.D3.E3.CD.2E.D$10.CE3.E4.E2.2E3.E
5.2E24.E.2E5.E3.2E7.E3.EC$10.E5.E7.ED3.E3.E25.C4.E3.E3.DE7.E5.E$10.D
5.D2.E4.2E6.E5.E26.E6.2E4.E2.D5.D$10.ED3.DE2.D3.E2.E4.E6.DE26.E4.E2.E
3.D2.ED3.DE$11.CD.DC2.E3.E4.E7.E3.EDEC11.CEDE4.E7.E4.E3.E2.CD.DC$12.C
.CE2.D2.E7.CD2.DE6.DE2.C5.C2.ED7.ED2.DC7.E2.D2.EC.C$16.2E.D11.D3E7.D
2.D5.D2.D8.E.ED11.D.2E$12.E5.EC10.E2.EDE7.ED7.DE7.EDE2.2E10.CE5.E$12.
D5.D4.EDE2.EDE2.E.DC.E3.DECE.E.E.ECED3.E.CD.E2.EDE2.EDE5.D5.D$12.ED3.
DEDE.C2.DC.E.DC4.DC3.DCE9.ECD3.CD4.CD.E.CD5.EDED3.DE$12.CED.DC2.DC2E
2.D4.D8.DE2.2D5.2D2.ED8.D4.D5.CD2.CD.DEC$15.3E3.D5.E4.E3.DC2.D4.ED3.D
E4.D2.CD3.E4.E4.ECD3.3E$15.DC5.E3.D4.D3.DC3.C4.CED.DC5.C3.CD3.D4.D10.
CD$13.CD6.D.E.DC3.DC.EDE12.3E10.EDE.CD3.CD3.CD6.DC$20.DC.EDE2.EDE17.D
C16.EDE2.EDE2.CD$18.EDE25.CD29.EDE$49.A!
[[ ZOOM 2 THUMBNAIL THUMBSTART EXCLUSIVEPLAY Y -9 LOOP 900 ]]}}


: [http://golly.sourceforge.net/Help/formats.html#rule RuleTable] rules from a [https://conwaylife.com/wiki/Special:AllPages?namespace=3794 repository].
: [http://golly.sourceforge.net/Help/formats.html#rule RuleTable] rules from a [https://conwaylife.com/wiki/Special:AllPages?namespace=3794 repository].
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: Non-deterministic rules.
: Non-deterministic rules.
:: Example: Non-deterministic Soldier Bugs {{LV:Viewer|x = 113, y = 113, rule = R7,C2,S64-113,B65-95,P
:: Example: Non-deterministic Soldier Bugs {{LV:Viewer|x = 113, y = 113, rule = R7,C2,S64-113,B65-95,P100,#,#
49b4o$47b7o$46b10o$45b12o$45b13o19b2o$44b3o5b6o17b6o$22b3o19b3o5b6o16b
49b4o$47b7o$46b10o$45b12o$45b13o19b2o$44b3o5b6o17b6o$22b3o19b3o5b6o16b
9o$20b7o17b3o5b6o15b11o$19b9o16b3o5b6o14b3ob9o$18b12o15b3o2b8o14b3o4b
9o$20b7o17b3o5b6o15b11o$19b9o16b3o5b6o14b3ob9o$18b12o15b3o2b8o14b3o4b
Line 440: Line 472:
7o4b3o14b8o2b3o15b12o$28b9ob3o14b6o5b3o16b9o$29b11o15b6o5b3o17b7o$30b
7o4b3o14b8o2b3o15b12o$28b9ob3o14b6o5b3o16b9o$29b11o15b6o5b3o17b7o$30b
9o16b6o5b3o19b3o$32b6o17b6o5b3o$34b2o19b13o$56b12o$57b10o$59b7o$60b4o!
9o16b6o5b3o19b3o$32b6o17b6o5b3o$34b2o19b13o$56b12o$57b10o$59b7o$60b4o!
[[ ZOOM 1 THUMBNAIL THUMBSTART EXCLUSIVEPLAY RANDSEED 1668072611004 ]]}}
[[ ZOOM 1 THUMBNAIL THUMBSTART EXCLUSIVEPLAY RANDSEED 1695741111763 LOOP 1000 ]]}}
</div>
</div>
</div>
</div>
Native support for [[BSFKL]], [[Extended Generations]] and [[deficient]] rules is also planned.<ref name="post68678" /><ref name="post68691" /><ref name="post86409" /> Support for 1D totalistic rules and multiple neighbourhoods rules may also be planned.<ref name="post84188" /><ref name="post75775" />


=== Repository Rules ===
=== Repository Rules ===
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format rules. Typically @TREE rules run much faster so if possible ensure there is an @TREE version of the rule before the @TABLE
format rules. Typically @TREE rules run much faster so if possible ensure there is an @TREE version of the rule before the @TABLE
version (if present).
version (if present).
LifeViewer supports the @COLORS section and the @NAMES section but does not support the @ICONS section (which will be ignored if present), although this may be supported in future.<ref name="post87414" />
 
=== Inline Rules ===
If LifeViewer does not recognize the rule specified in the pattern header then it will first search the pattern comments after the pattern to see
if there is an inline rule definition. This must be in [http://golly.sourceforge.net/Help/formats.html#rule RuleTable] format. If there is no inline
rule then it will attempt to retrieve the rule from the Rule Repository.


=== Aliases ===
=== Aliases ===
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* Cross-surface
* Cross-surface
* Sphere (either diagonal)
* Sphere (either diagonal)
For range 2+ neighbourhoods only Plane and Torus (without shift) are supported.
For range 2+ neighbourhoods, hexagonal, triangular, PCA and Margolus rules only Plane and Torus (without shift) are supported.
 
Native support for [[BSFKL]], [[Extended Generations]] and [[deficient]] rules is also planned.<ref name="post68678" /><ref name="post68691" /><ref name="post86409" /> Support for 1D totalistic rules and multiple neighbourhoods rules may also be planned.<ref name="post84188" /><ref name="post75775" />


== User Interface ==
== User Interface ==
Line 2,123: Line 2,159:


== Pattern Identification ==
== Pattern Identification ==
LifeViewer is able to identify [[spaceships]], [[oscillators]] and [[still-life]] patterns. For oscillators it can display a table and graphical map of periods per cell.
LifeViewer is able to identify [[spaceships]], [[oscillators]] and [[still-life]] patterns. For oscillators it can display a table and graphical [[map]] of periods and frequencies per cell.


[[File:identify-results.png]]
[[File:Identify-results.png]]
[[File:identify-table.png]]
[[File:Identify-table.png]]


[[File:identify-map.png]]
[[File:Identify-map.png]]


== Scripts ==
== Scripts ==
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== Planned features ==
== Planned features ==
The following features and functionalities are planned for future builds of LifeViewer:
The following features and functionalities are planned for future builds of LifeViewer:
* Support for @ICONS in ruletables<ref name="post87414" />
* Native support for [[BSFKL]] rules<ref name="rulespaces1">https://conwaylife.com/forums/viewtopic.php?f=3&t=1622&p=86409#p86409</ref>
* Native support for [[Extended Generations]]<ref name="rulespaces1"/>
* Theme support for [R]Super<ref>https://conwaylife.com/forums/viewtopic.php?f=3&t=1622&p=129493#p129493</ref>
* Theme support for [R]Super<ref>https://conwaylife.com/forums/viewtopic.php?f=3&t=1622&p=129493#p129493</ref>
* Native support for 1D totalistic rules<ref>https://conwaylife.com/forums/viewtopic.php?f=3&t=1622&p=84188#p84188</ref>


== Possible future features ==
<div class="mw-collapsible mw-collapsed">
<div class="mw-collapsible mw-collapsed">
Click on "Expand" to the right to view the list of other requested features that ''may'' appear at some stage.
Click on "Expand" to the right to view the list of other requested features that ''may'' appear at some stage.
<div class="mw-collapsible-content">
<div class="mw-collapsible-content">
=== Rules ===
* Native support for [[BSFKL]] rules<ref name="rulespaces1">https://conwaylife.com/forums/viewtopic.php?f=3&t=1622&p=86409#p86409</ref>
* Native support for [[Extended Generations]]<ref name="rulespaces1"/>
* Native support for 1D totalistic rules<ref>https://conwaylife.com/forums/viewtopic.php?f=3&t=1622&p=84188#p84188</ref>
* Native support for higher-range Margolus rules<ref>https://conwaylife.com/forums/viewtopic.php?f=3&t=1622&p=82121#p82121</ref>
* Native support for one-dimensional rules with a range greater than 2<ref>https://conwaylife.com/forums/viewtopic.php?f=3&t=1622&p=82283#p82283</ref>
* Native support for alternating rules with more than 3 constituent rules<ref>https://conwaylife.com/forums/viewtopic.php?f=3&t=1622&p=129157#p129157</ref>
=== Non-square grids/selections ===
* Diagonal/von Neumann-like selections<ref>https://conwaylife.com/forums/viewtopic.php?f=3&t=1622&p=70959#p70959</ref>
* Diagonal/von Neumann-like selections<ref>https://conwaylife.com/forums/viewtopic.php?f=3&t=1622&p=70959#p70959</ref>
* Selection shapes which are more useful for hexagonal and triangular grids<ref name="hextri1">https://conwaylife.com/forums/viewtopic.php?f=3&t=1622&p=78941#p78941</ref><ref name="hextri2">https://conwaylife.com/forums/viewtopic.php?f=3&t=1622&p=80331#p80331</ref><ref name="hextri3">https://conwaylife.com/forums/viewtopic.php?f=3&t=1622&p=87226#p87226</ref>
* Selection shapes which are more useful for hexagonal and triangular grids<ref name="hextri1">https://conwaylife.com/forums/viewtopic.php?f=3&t=1622&p=78941#p78941</ref><ref name="hextri2">https://conwaylife.com/forums/viewtopic.php?f=3&t=1622&p=80331#p80331</ref><ref name="hextri3">https://conwaylife.com/forums/viewtopic.php?f=3&t=1622&p=87226#p87226</ref>
* Camera rotation for hexagonal and triangular grids<ref name="hextri1"/>
* Selection flip/rotate transformations for hexagonal and triangular grids<ref name="hextri2"/>
* Selection flip/rotate transformations for hexagonal and triangular grids<ref name="hextri2"/>
* Ability to customize the color of the region outside of a bounded grid<ref>https://conwaylife.com/forums/viewtopic.php?f=3&t=1622&p=81012#p81012</ref>
* Ability to change rules from inside the viewer, rather than through a popup<ref name="rulechange">https://conwaylife.com/forums/viewtopic.php?f=3&t=1622&p=81730#p81730</ref>
* Ability to change rules from inside the viewer by selecting aliases<ref name="rulechange"/>
* Native support for higher-range Margolus rules<ref>https://conwaylife.com/forums/viewtopic.php?f=3&t=1622&p=82121#p82121</ref>
* Native support for one-dimensional rules with a range greater than 2<ref>https://conwaylife.com/forums/viewtopic.php?f=3&t=1622&p=82283#p82283</ref>
* Directions of spaceships on hexagonal and triangular grids from Identify<ref>https://conwaylife.com/forums/viewtopic.php?f=3&t=1622&p=84510#p84510</ref>
* Directions of spaceships on hexagonal and triangular grids from Identify<ref>https://conwaylife.com/forums/viewtopic.php?f=3&t=1622&p=84510#p84510</ref>
* More bounded grids<ref>https://conwaylife.com/forums/viewtopic.php?f=3&t=1622&p=87048#p87048</ref>
* PCA cell height (when multiple layers are shown) depending on the number of contained cells<ref>https://conwaylife.com/forums/viewtopic.php?f=3&t=1622&p=87051#p87051</ref>
* Themes affecting the UI, or possibly the ability to configure the UI theme separately<ref>https://conwaylife.com/forums/viewtopic.php?f=3&t=1622&p=87098#p87098</ref>
* Calculating the mod of oscillators and spaceships on hexagonal and triangular grids in Identify<ref name="hextri3"/>
* Calculating the mod of oscillators and spaceships on hexagonal and triangular grids in Identify<ref name="hextri3"/>
* Better Identify results for Margolus rules<ref>https://conwaylife.com/forums/viewtopic.php?p=88250#p88250</ref>
 
* Identify recognizing puffers and constellations<ref>https://conwaylife.com/forums/viewtopic.php?f=3&t=1622&p=88402#p88402</ref>
=== [R]Super/[R]History ===
* Displaying a Margolus or PCA rule's reverse rulestring if it exists<ref>https://conwaylife.com/forums/viewtopic.php?f=3&t=1622&p=88675#p88675</ref>
* In-viewer buttons for advancing selections and outside of selections<ref>https://conwaylife.com/forums/viewtopic.php?f=3&t=1622&p=100714#p100714</ref>
* Making the hexagonal grid more geometrically regular, and changing the offset square grid to match<ref>https://conwaylife.com/forums/viewtopic.php?f=3&t=1622&p=128760#p128760</ref>
* KILLGLIDERS functionality in [R]Super<ref name="Apr2021">https://conwaylife.com/forums/viewtopic.php?f=3&t=1622&p=129156&hilit=backlog#p129156</ref>
* KILLGLIDERS functionality in [R]Super<ref name="Apr2021">https://conwaylife.com/forums/viewtopic.php?f=3&t=1622&p=129156&hilit=backlog#p129156</ref>
* History/age rendering in [R]Super<ref name="Apr2021"/>
* Support for pasting in [R]History/[R]Super-exclusive cells<ref>https://conwaylife.com/forums/viewtopic.php?p=93893#p93893</ref>
* Selection inversion support for [R]History and [R]Super<ref name="Apr2021"/>
* Selection inversion support for [R]History and [R]Super<ref name="Apr2021"/>
* Native support for alternating rules with more than 3 constituent rules<ref>https://conwaylife.com/forums/viewtopic.php?f=3&t=1622&p=129157#p129157</ref>
* RGBA color customization support for translucent UI elements<ref>https://conwaylife.com/forums/viewtopic.php?f=3&t=1622&p=138724#p138724</ref>
* Separate zoom values for each axis<ref>https://conwaylife.com/forums/viewtopic.php?f=3&t=1622&p=138386&hilit=zoom#p138386</ref>
</div>
</div>
</div>
</div>


== Known bugs ==
== Known bugs ==
The following is a list of issues within LifeViewer which have been addressed by Chris himself and are not of high enough priority for immediate fixing:
{{main|LifeViewer/Known bugs}}
 
; Backlog issues
* KILLGLIDERS in [R]History rules replaces marked off cells with generic history cells<ref>https://conwaylife.com/forums/viewtopic.php?f=3&t=1622&p=129056#p129156</ref>
* Selections appear visually offset on bounded grids, often as a result of mismatching specified and actual pattern sizes<ref>https://conwaylife.com/forums/viewtopic.php?f=3&t=1622&start=2600#p156655</ref>
* Bounded grids are not centered correctly when a pattern first loads<ref name="duo">https://conwaylife.com/forums/viewtopic.php?p=153173#p153208</ref>
* Margolus patterns are handled incorrectly with bounded grids, resulting in positioning errors and cell deletion<ref>https://conwaylife.com/forums/viewtopic.php?p=157478#p157487</ref>
* Pattern bounding boxes are calculated incorrectly on bounded grids<ref>https://conwaylife.com/forums/viewtopic.php?p=157871#p157873</ref>
 
; Low-priority issues
* The triangular grid renders slightly to the left of where it should<ref>https://conwaylife.com/forums/viewtopic.php?f=3&t=1622&p=138751#p138751</ref><ref>https://conwaylife.com/forums/viewtopic.php?f=3&t=1622&p=151118#p151118</ref><ref name="duo"/><ref>https://conwaylife.com/forums/viewtopic.php?f=3&t=1622&start=2725#p157543</ref>
** As a result of this bug, some of the horizontal lines can be seen to de-render at the right edge of the grid under certain circumstances.
 
; Platform-exclusive issues
: '''iOS'''
* There are large visual gaps in triangular selections<ref>https://conwaylife.com/forums/viewtopic.php?f=3&t=1622&p=81099#p81095</ref>
* Period maps are not generated for oscillators with bounding boxes exceeding 4096 cells in a direction<ref>https://conwaylife.com/forums/viewtopic.php?p=156688#p156688</ref>
* The copy and cut buttons give the "Copied to external clipboard" message however does not, there is no permanence between sessions{{citation needed|date=February 2023}}
* The lazyslug.com interface begins unreasonably thin (in the y axis) when accessed in portrait mode on an iPhone, however will become closer to square if switched to landscape mode and back{{citation needed|date=February 2023}}


== References ==
== References ==
<references>
<references>
<ref name="post87414">{{LinkForumThread
|format = ref
|title  = Re: Pattern viewer for forum threads
|p      = 87414
|author = Chris Rowett
|date  = January 13, 2020
}}</ref>
<ref name="post68678">{{LinkForumThread
<ref name="post68678">{{LinkForumThread
|format = ref
|format = ref

Latest revision as of 18:35, 24 February 2025

LifeViewer
LifeViewer image
Homepage Click here
Purpose Life simulation
Created by Chris Rowett
Platform HTML5 / Javascript
Not to be confused with the calendar app also called LifeViewer.

LifeViewer is a free, open-source, browser-based scriptable pattern viewer and editor used to simulate Life and a wide range of other 1D and 2D cellular automata.


x=59, y = 7, rule = B3/S23 o5b5ob5ob5obo3bob5ob5obobobob5ob4o$o7bo3bo5bo5bo3bo3bo3bo5bobobobo5bo 3bo$o7bo3bo5bo5bo3bo3bo3bo5bobobobo5bo3bo$o7bo3b3o3b3o3bo3bo3bo3b3o3bo bobob3o3b4o$o7bo3bo5bo5bo3bo3bo3bo5bobobobo5bo3bo$o7bo3bo5bo6bobo4bo3b o5bobobobo5bo3bo$5ob5obo5b5o3bo3b5ob5o2bobo2b5obo3bo! #C [[ IGNOREEXCLUSIVE ]] #C [[ COLOUR DEAD 0 0 0 COLOUR ALIVE 0 0 0 ]] #C [[ LOOP 1101 STARS NOSTEPBACK ]] #C [[ AUTOSTART X -90 Y 60 LAYERS 6 ZOOM 4 DEPTH 3 ]] #C [[ PAUSE 3 X 90 Y -60 ANGLE 20 THEME 0 ]] #C [[ PAUSE 1.5 X 90 Y 60 ANGLE 340 ZOOM 6 ]] #C [[ PAUSE 1.5 X 0 Y 0 ANGLE 0 THEME 3 ZOOM 4 ]] #C [[ PAUSE 1 X 0 DEPTH 0.2 ZOOM 6 THEME 4 ]] #C [[ T 1 THEME 7 ]] #C [[ T 400 ZOOM 5 X 5 Y -10 THEME 2 ]] #C [[ T 450 DEPTH 5 ]] #C [[ T 560 X -155 Y 127 DEPTH 0.5 ]] #C [[ T 950 X -242 Y 214 ANGLE 20 ]] #C [[ T 1050 DEPTH 0 ANGLE 0 AUTOFIT "#T" ]] #C [[ T 1100 X 0 Y 0 ZOOM 0.25 THEME CUSTOM ]]

LifeViewer features

  • Smooth non-integer zoom with anti-aliasing and rotation.
  • Colour themes with cell history and longevity.
  • Square, hexagonal and triangular grids.
  • Pseudo 3D layers and stars.
  • Multiple ways to automatically track patterns with the camera as they evolve.
  • Script language that allows many features to be customized including Waypoint animations.
  • Support for multiple embedded LifeViewers and/or a single popup LifeViewer.
  • Ability to step back to earlier generations for all patterns and reverse playback for reversible Margolus and PCA patterns.
  • Random pattern and rule generation.
  • Real time auto-scaling population graph.
  • Pattern annotation with Labels, Arrows, Lines and Polygons.
  • Programatically pasting cells onto the grid at defined intervals (for example: glider injection).
  • Ability to build patterns from RLE recipes with transformations.
  • Identification of still life patterns, oscillator and spaceship periods.
  • Automatic scaling for high DPI displays including smartphones and tablets.
  • Editor with unlimitied undo/redo and multiple clipboards.

Rule support

LifeViewer supports the following rule families:

Built-in rules

Click on "Expand" to the right to view example patterns for each rule family.

2-state Margolus rules.
Example: Critters (M15,14,13,3,11,5,6,1,7,9,10,2,12,4,8,0)
x=63, y = 34, rule = critters 9$52bo9$48b2o$39bo$47bo2bo3$47bo$48bo$5bo31bo20bo$6bo31bo18bo$6bo31bo 17bo$5bo31bo17bo! [[ RLE input o$bo$bo$o! PASTET EVERY 64 PASTE input 5 24 ZOOM 4 THUMBNAIL THUMBSTART EXCLUSIVEPLAY ]]
2-state Outer-totalistic Life-like cellular automata (from ranges 1 to 500, including Larger than Life).
Example: Soldier Bugs (R7,C2,M1,S65..114,B65..95,NM)
x=113, y = 113, rule = R7,C2,M1,S65..114,B65..95,NM 49b4o$47b7o$46b10o$45b12o$45b13o19b2o$44b3o5b6o17b6o$22b3o19b3o5b6o16b 9o$20b7o17b3o5b6o15b11o$19b9o16b3o5b6o14b3ob9o$18b12o15b3o2b8o14b3o4b 7o$18b13o14b12o14b3o6b6o$17b5o3b6o15b10o15b3o6b6o$17b2o7b5o16b7o17b3o 6b6o$17b2o7b5o18b3o20b3obo2b7o$17b3o5b6o41b13o$17b3o2b9o42b11o$18b3ob 8o44b8o$19b10o46b6o16b5o$20b7o50b2o17b8o$21b5o69b4o2b4o$94b3o4b5o$93b 3o5b5o$93b5o4b5o$93b5o4b5o$93b5o4b5o$93b6o2b5o$94b12o$9b5o81b10o$8b7o 80b9o$7b9o80b8o$6b10o81b6o$6b11o$5b13o$5b5o3b5o$4b5o5b5o$4b5o5b5o$5b4o 4b5o$5b3o6b4o$6b4o3b4o$7b9o$8b7o$10b3o3$104b4o$102b8o$101b10o$100b4o4b 4o$100b3o5b4o$99b4o5b5o$99b5o4b5o$99b5o4b5o$100b13o$100b12o$101b10o$4b 6o91b10o$3b8o91b8o$2b10o91b6o$2b10o$b12o$13o$5o4b5o$5o4b5o$5o5b4o$b4o 5b3o$b4o4b4o$2b10o$3b8o$5b4o3$100b3o$98b7o$97b9o$96b4o3b4o$95b4o6b3o$ 95b5o4b4o$94b5o5b5o$94b5o5b5o$95b5o3b5o$95b13o$96b11o$10b6o81b10o$9b8o 80b9o$9b9o80b7o$8b10o81b5o$7b12o$7b5o2b6o$6b5o4b5o$6b5o4b5o$6b5o4b5o$ 7b5o5b3o$7b5o4b3o$8b4o2b4o69b5o$9b8o17b2o50b7o$11b5o16b6o46b10o$31b8o 44b8ob3o$29b11o42b9o2b3o$28b13o41b6o5b3o$27b7o2bob3o20b3o18b5o7b2o$27b 6o6b3o17b7o16b5o7b2o$27b6o6b3o15b10o15b6o3b5o$27b6o6b3o14b12o14b13o$27b 7o4b3o14b8o2b3o15b12o$28b9ob3o14b6o5b3o16b9o$29b11o15b6o5b3o17b7o$30b 9o16b6o5b3o19b3o$32b6o17b6o5b3o$34b2o19b13o$56b12o$57b10o$59b7o$60b4o! [[ ZOOM 2 THUMBNAIL THUMBSTART EXCLUSIVEPLAY ]]
2-state Isotropic non-totalistic cellular automata (for range-1 Moore and range-1 hexagonal).
Example: Just Friends (B2-a/S12)
x=65, y = 74, rule = B2-a/S12 63bo$63bo4$61bo$64bo$59bobo2bo46$18bo$19b2o12$4bo$4bo4$2bo$5bo$obo2bo! [[ ZOOM 2 THUMBNAIL THUMBSTART EXCLUSIVEPLAY ]]
2-state Non-isotropic cellular automata (for range-1 Moore, hexagonal and von Neumann).
Example: MAP//8IAN1+KYD/9QAA/f8AAOu/AQD38wAI//8IgP39Akrn/wAB/78DAP/+AAD/ugAA//sQCN3+AIDfvwhD//sAQA
x=1, y = 1, rule = MAP//8IAN1+KYD/9QAA/f8AAOu/AQD38wAI//8IgP39Akrn/wAB/78DAP/+AAD/ugAA//sQCN3+AIDfvwhD//sAQA:T80,40 o! [[ ZOOM 4 THUMBNAIL THUMBSTART EXCLUSIVEPLAY ]]
Generations rules (as an extension of the outer-totalistic, non-totalistic and non-isotropic rulespaces).
Example: Fireworks (2,13,21)
x=200, y = 100, rule = 2/13/21:T200,100 #C Fireworks #C An admirably beautiful rule by John Elliott 88.A6$A58$61.A24$107.A11$37.A! [[ ZOOM 2 THUMBNAIL THUMBSTART EXCLUSIVEPLAY ]]
Alternating rules.
Example: alternlife (B13/S012345678|B/S15)
x=21, y = 9, rule = alternlife 3.A13.A2$.2A15.2A2$A19.A4$9.A! [[ ZOOM 12 THUMBNAIL THUMBSTART EXCLUSIVEPLAY ]]
Partitioned cellular automata (PCA) rules.
Example: PCA_4 (2PCA4,0,2,4,12,8,5,9,7,1,6,10,11,3,13,14,15)
x=49, y = 29, rule = PCA_4 AB45.AB$HD45.HD24$21.A20.D$20.E$AB19.B20.F4.AB$HD39.D5.HD! [[ STEP 20 ZOOM 6 THUMBNAIL THUMBSTART EXCLUSIVEPLAY ]]
Weighted rules.
Example: R2,C2,S2-3,B4,7-8,NW0010001210120210121000100
x=9, y = 9, rule = R2,C2,S2,3,B4,7,8,NW0010001210120210121000100:T80,40 3A6.$3A6.$2A.A3.A.$2.A5.A$9.$9.$9.$2.A6.$3.A5.! [[ ZOOM 4 THUMBNAIL THUMBSTART EXCLUSIVEPLAY ]]
Elementary cellular automata.
Example: Wolfram 30 (W30)
x=1, y = 1, rule = W30:P100,40 o! #CXRLE Pos=0,-20 [[ ZOOM 4 THUMBNAIL THUMBSTART EXCLUSIVEPLAY ]]
[R]History rules.
Example: LifeHistory
x=457, y = 155, rule = LifeHistory 59.3B64.B125.B$58.BFBF2B60.4BF122.3B$58.6BF.B.F.F.B.F.F.B.F.F.B.F.F.B .F.F.B.F.F.B.F.F.B.F.F.B.F.F.B.F7B5.BF.B.F.F.B.F.F.B.F.F.B.F.F.B.F.F. B.F.F.B.F.F.B.FBF.B.F.F.B.F.F.B.F.F.B.F.F.B.F.F.B.F.F.B.F.F.B.F.F.B.F .F.B.F.F.B.F.F3BFBF.2B2F2.3B$57.F10B.5B.5B.A4B.5B.5B.5B.26BF2BF133B$ 57.24B2A2BA129BA33B2A19B$56.23BA3B2A63B3A63BABA32B4A17B$55.F23BABA67B 2A66BA30BABA2BA16B$56.23BA3B2A63B3A63BABA31BAB4A14BF3B63.F3.BF$57.24B 2A2BA129BA33B4A20B3.B59.5B$56.12B.5B.5B.A4B.5B.5B.5B.28BF116BA23B.B2C 57.6B$57.7BF.B.F.F.B.F.F.B.F.F.B.F.F.B.F.F.B.F.F.B.F.F.B.F.F.B.F.F.B. F.F7BF3.F2B.F.F.B.F.F.B.F.F.B.F.F.B.F.F.B.F.F.B.F.F.B.F.F.B.F.F.B.F.F .B.F.F.B.F.F.B.F.F.B.F.F.B.F.F.B.F.F.B.F.F.B.FBF.2BFBF3BFBF8B3A8B2C 57.7B$58.6B61.7B125.10BA7B.B57.8B$56.F.5B.F59.9B125.7B3A7B58.10B$57. 7B61.7B125.15B61.10B$56.9B59.F.5B.F123.4B.5BA6B60.11B$57.7B61.7B123. 4B2.3B3A5B61.11B$56.F7BF59.F7BF121.4B3.B3A7B61.11B$57.7B61.7B121.4B3. 3B2A2B.3B55.F.B.F.2F11B$56.F.5B.F59.9B119.4B3.8B2.F43.B.F.F.B4.BF.6BA BA9B2A32B2A32B2A32B2A6B$57.7B61.7B119.4B3.8B44.23BA2BA7B4A30B4A30B4A 30B4A6BF$56.9B59.F.5B.F117.4B3.9B42.F24BA3BA6B2AB2A29B2AB2A29B2AB2A 29B2AB2A5B$57.7B61.7B117.4B3.4B.6B42.28BA8B2A32B2A32B2A32B2A6B$56.F7B F59.F7BF115.4B3.4B.7B42.24BA3BA117B$57.7B61.7B115.4B3.4B2.6B44.23BA2B A5B$56.F.5B.F59.9B113.4B3.4B3.6B47.7B.2B.F2.6B3A6B$57.7B61.2B3A2B113. 4B3.4B4.6B46.9B.F2.BF.B.F.F9B$56.9B59.F.5B.F111.4B3.4B4.8B46.7B13.F8B $57.7B61.2ABAB2A111.4B3.4B6.8B45.6B.F13.8B$56.F7BF59.FBA3BABF109.4B3. 4B6.9B45.F2BA3B14.8B$57.7B61.2BABA2B109.4B3.4B7.9B46.B3AB14.9B$56.F. 5B.F59.3BABA3B107.4B3.4B8.10B44.B2ABAB14.8B$57.7B61.BA3BAB107.4B3.4B 9.5B2A3B42.F2.5B14.8B$56.9B59.F.5B.F105.4B3.4B10.5B2A4B28.B6.F6.7B.F 11.10B$57.7B61.7B105.4B3.4B11.11B27.5BF.2B3.B.9B12.11B$56.F7BF59.F7BF 103.4B3.4B12.12BA.2A21.24B14.8B$57.7B61.7B103.4B3.4B15.8B2.2A.A19.26B 14.7B$56.F.5B.F59.9B101.4B2.5B16.7B26.F25B14.7B$18.3B4.B31.7B61.7B 101.4B3.4B17.5B29.24BF13.8B$17.BFBF6BF28.9B59.F.5B.F99.2A2B3.4B18.5B 30.23B14.6B$17.6B.5B28.7B61.7B99.2B2A3.4B18.6B31.8B2.B.F10B14.5B$16.F 13BF25.F7BF59.F7BF97.2BAB3.4B19.7B2.4B23.10B6.B.6BF12.F.4B$16.4BA12B 24.7B61.7B97.4B3.4B19.F7BF6BF21.9B9.5B16.F.B$15.4B2A5BA5BFB22.F.5B.F 59.9B95.4B3.4B21.14B21.11B5.3B2ABA6B$14.F3BA9BA5B23.7B61.7B95.4B3.4B 21.F14B20.7BA2BF2B4.4B3A6B$14.5B2A3BA3BA3BFB22.9B59.F7BF93.4B3.4B23. 15B19.6B3A4B4.2BF2BA7B$13.7BA12B24.7B61.7B93.4B3.4B23.16B19.6BAB2A3B 5.11B$14.11B2A6B23.F7BF59.F7BF91.4B3.4B25.15B24.5B9.9B$14.B.7BF7B.B 24.7B61.7B91.4B3.4B25.F14B23.F6B.B6.10B$14.19B23.F.5B.F59.9B89.4B3.4B 27.9B.3B25.10BF.B2.8B$14.20B23.BA3BAB61.7B89.4B3.4B27.F7BF31.23B$13.B F18B23.3BABA3B59.F7BF87.4B3.4B27.10B30.F24B$13.19BF24.2BABA2B61.7B87. 4B3.4B29.9B30.25BF$13.BF17B24.FBA3BABF59.F7BF85.4B3.4B31.7B31.25B$14. 17B26.2ABAB2A61.7B85.4B3.4B31.F7BF30.BA22B$16.F13BF25.F.5B.F59.9B83. 4B3.4B33.7B31.BA7B.B3.2B.F5B$18.5B.6B27.2B3A2B61.7B83.4B3.4B33.F7BF 31.BA5B6.F6.B$19.F6BFBFB26.9B59.F7BF81.4B3.4B35.7B32.5B2.F$21.B4.3B 28.7B61.7B81.4B3.4B35.9B32.3B$56.F7BF59.F7BF79.4B3.BA2B37.7B34.F$57. 7B61.7B79.4B3.2A2B37.F7BF$56.F.5B.F59.9B77.4B3.2B2A39.7B$57.7B61.7B 77.4B3.4B39.F7BF$56.9B59.F7BF75.4B3.4B41.7B$57.7B61.7B75.4B3.4B41.9B$ 56.F7BF59.F7BF73.4B3.4B43.7B$57.7B61.7B46.F2B2A2BF19.4B3.4B43.F3BA3BF $56.F.5B.F59.9B45.3B2A2B19.4B3.4B45.2B3A2B$57.7B61.7B46.8B.F15.4B3.4B 45.FB5ABF$56.9B59.F7BF43.12B14.4B3.4B47.BA3BAB$57.7B61.8B42.F13B12.4B 3.4B47.2A5B2A$56.F7BF.F.B.F.F.B.F.F.B.F.F.B.F.F.B.F.F.B.F.F.B.F.F.B.F .F.B.F.F.B.F9B38.3B.13BF10.4B3.4B49.BA3BA2B$55.11B.5B.5B.5B.5B.5B.5B. 4BA.5B.5B.13B37.5B.11B11.4B3.4B49.FBA3BABF$55.48BA2B2A27B37.5B.8B2.F 9.4B3.4B50.8B$54.BF48B2A3BA24B40.13B10.4B3.4B52.F6B$54.53BABA23BF41. 8B.4B8.4B3.4B53.6BF64.F$54.BF48B2A3BA23B43.7B2.4B6.4B3.4B54.7BF.B.F.F .B.F.F.B.F.F.B.F.F.B.F.F.B.F.F.B.F.F.B.F.F.B.F.F.B.F2.B.3B$55.48BA2B 2A24B45.5B.F2.4B4.4B3.4B55.F10B.5B.5B.5B.5B.5B.5B.5B.5B.5B2.7BF$57.F 7B2.5B.5B.5B.5B.5B.5B.4BA.5B.5B.10BF45.4B6.4B2.4B3.4B56.33B2A42B$59. 3B.B2.F.B.F.F.B.F.F.B.F.F.B.F.F.B.F.F.B.F.F.B.F.F.B.F.F.B.F.F.B.F7B 45.4B7.8B3.4B56.33BABA41BFB$60.F64.F6B44.4B9.6B3.4B56.F32B2A45B$125. 6BF43.4B11.4B3.4B57.34BABA41BFB$125.8B41.4B11.6B.4B57.36B2A42B$124.F 7BF40.4B11.11B59.13B.5B.5B.5B.5B.5B.5B.5B.5B.5B.11B$124.8B40.4B11.4B 2.5B60.9BF.B.F.F.B.F.F.B.F.F.B.F.F.B.F.F.B.F.F.B.F.F.B.F.F.B.F.F.B.F. F7BF$124.9B38.4B11.4B4.5B60.8B61.7B$125.7B38.4B11.2A2B6.4B60.F7BF59. 9B$124.F7BF36.4B11.2B2A8.4B12.B47.7B61.7B$125.7B36.4B11.2BAB10.4B10. 3B45.9B59.F.5B.F$124.F7BF34.4B11.4B12.4B9.3B46.7B61.7B$125.7B34.4B11. 4B14.4B7.4B45.F7BF59.F7BF$124.9B32.4B11.4B16.4B5.4B.F45.7B61.7B$125. 7B32.4B11.4B18.4B3.4B.3B43.F7BF59.9B$124.F7BF30.4B11.4B20.9B.6B42.7B 61.7B$125.7B30.4B11.4B22.15BF40.9B59.F.5B.F$25.F98.F2BABA2BF28.4B11. 4B24.15B41.7B61.7B$125.2B3A2B28.4B11.4B26.16B38.F7BF59.F7BF$124.3B3A 3B26.4B11.4B29.10B2A2B39.7B61.7B$20.F104.7B26.4B11.4B31.9B2A2B38.F7BF 59.9B$124.F7BF24.4B11.4B31.F2.11B39.7B61.7B$125.7B24.4B11.4B34.11B39. 9B59.F.5B.F$124.F.5B.F22.4B11.4B34.9B.F41.7B61.7B$125.7B22.4B11.4B34. 3AB.4B43.F7BF59.F7BF$124.9B20.4B11.4B34.3BA2.4BF43.7B61.7B$31.F92.10B 18.4B11.4B34.3BA2.F.2B44.F7BF59.9B$124.F7BF18.4B11.4B34.4B5.F46.7B61. 7B$125.7B18.4B11.4B34.4B52.9B59.F.5B.F$20.F9.2A92.F.5B.F16.4B11.4B34. 4B54.7B61.7B$30.2A93.7B16.4B11.4B34.4B54.F7BF59.F3BA3BF$124.9B14.4B 11.4B34.4B56.7B61.2B3A2B$75.F49.7B14.4B11.4B34.4B56.F7BF59.2BA3BA2B$ 7.F23.F35.F56.F7BF12.4B11.B2DB34.4B58.7B61.B2AB2AB$2.F17.3A101.8B12. 4B11.2B2D34.4B58.9B59.F.5B.F$22.A6.F94.F7BF10.4B11.4B34.4B60.7B61.7B$ F20.A2.F42.2A9.F46.7B10.4B11.4B34.4B60.F7BF59.F7BF$67.2A55.9B8.4B11. 4B21.B12.4B62.7B61.7B$119.2B4.7B8.4B11.4B21.3B10.4B62.F.5B.F59.9B$2A 116.5B2F7BF3B3.4B11.4B22.3B9.4B64.B2AB2AB61.7B$2A9.F55.F11.F38.24B11. 4B23.4B7.4B64.2BA3BA2B59.F.5B.F$117.24B11.4B23.F.4B5.4B66.2B3A2B61.7B $69.F13.F33.23B11.4B23.3B.4B3.4B66.F3BA3BF59.F7BF$F117.21B11.4B22.6B. 9B68.7B61.7B$73.F11.F31.23B9.4B22.F15B68.F.5B.F59.9B$118.21B9.4B23. 15B70.7B61.7B$80.A38.19B9.4B22.16B70.9B59.F.5B.F$81.A2.2A37.B.10B11. 4B23.2B2A10B73.7B61.7B$74.F4.3A2.2A40.8B11.4B24.2B2A9B73.F7BF59.F7BF$ 11.F115.6B11.4B25.11B2.F73.7B61.7B$11.F115.5B11.4B27.11B74.F.5B.F59. 9B$85.F41.6B9.4B29.F.9B74.7B61.7B$126.8B7.4B33.4B.4B72.9B59.F.5B.F$ 125.4B.5B6.4B21.D.D8.F4B2.4B72.7B61.7B$124.4B4.4B2.F.5B19.D5.D8.2B.F 2.4B70.F7BF59.F7BF$123.4B6.4B2.BA5B34.F5.4B70.7B61.7B$79.F42.4B8.4B.A B2A4B16.D3.C3.D15.4B68.F.5B.F59.9B$121.4B10.4BA3BA4B18.2C19.5B35.3B 30.7B61.7B$120.4B9.F2.4BA3B.5B13.D2.C.C2.D17.4B32.7B27.9B59.F.5B.F$ 119.4B11.7BA3B.5B39.4B30.10B26.7B61.7B$118.4B10.F2BA6BA3B.3B14.D5.D 20.4B.F.F.B.F.F.B.F.F.B.F.F.B.F3.12B23.F7BF59.F7BF$118.3B12.B3A9BF19. D.D23.28B3.14B23.7B61.7B$118.2B14.AB3A7B43.B2.4BA3BA36BF21.F.5B.F59. 9B$118.B15.F.B2A6B43.2AB.3BA4BA36BF22.7B61.7B$137.BA6B43.2A6B2A39B22. 9B59.F.5B.F$136.F2BA3BF45.2B.3BA4BA38B21.7B61.6B$137.BA3B50.4BA3BA23B 4.11BF.B.F.F.B.F.F.A.F3.F7BF.F.B.F.F.B.F.F.B.F.F.B.F.F.B.F.F.B.F.F.B. F.F.B.F.F.B.F.F.B.F7B$138.A3B50.28B10.13B.5B.3BA4BF28B.5B.5B.5B.5B.5B .5B.12B$191.BF2B.F.F.B.F.F.B.F.F.B.F.F.B.F9.21B2AB2A44B2A33B$229.21B 2A48BABA33B$229.20B3A50B2A32BF$230.20B2A48BABA33B$229.F21B2AB2A44B2A 33B$230.7B.5B.5B.3BA3BF2BF26B.5B.5B.5B.5B.5B.5B.10BF$229.7BF2.F.B.F.F .B.F.F.A.FB5.7BF.B.F.F.B.F.F.B.F.F.B.F.F.B.F.F.B.F.F.B.F.F.B.F.F.B.F. F.B.F6B$230.5B28.F4B60.2BFBFB$231.3B31.B64.3B$232.B.F! [[ ZOOM 1 THUMBNAIL THUMBSTART EXCLUSIVEPLAY ]]
[R]Super rules.
Example: LifeSuper
x=312, y = 156, rule = LifeSuper:T312,156 69.M.M6.M.M49.2Q.Q6.Q3.3Q117.S.2S2.S.S2.2S.S10.U.2U2.U.U2.2U.U$20.2O. 2O2.2O.2O39.M6.M44.2Q5.Q.Q8.3Q4.Q85.2O34.S.S22.U.U$20.2O2.O2.O2.2O36. 2M10.2M41.2Q17.2Q3.Q85.4O28.S11.S12.U11.U$21.2O2.2O2.2O94.Q106.2O2.2O 28.S2.S3.S2.S14.U2.U3.U2.U$21.O8.O201.O4.O28.4S3.4S14.4U3.4U$19.2O10. 2O23.G36.A8.A7.A7.A7.A7.A7.A7.A7.A7.A7.A7.A7.A7.A35.2O30.S3.S.S3.S14. U3.U.U3.U$51.3A2.G.G32.A.A6.A.A5.A.A5.A.A5.A.A5.A.A5.A.A5.A.A5.A.A5.A .A5.A.A5.A.A5.A.A5.A.A33.O4.O30.S.S.S.S18.U.U.U.U$18.O14.O21.G.G34.A. A3.A5.A.A5.A.A5.A.A5.A.A5.A.A5.A.A5.A.A5.A.A5.A.A5.A.A5.A.A5.A.A5.A.A 29.O4.O28.S3.S.S3.S14.U3.U.U3.U$18.O2.O8.O2.O23.G34.A3.A.A7.A7.A7.A7. A7.A7.A7.A7.A7.A7.A7.A7.A7.A24.O14.O26.S3.S20.U3.U$18.O14.O170.A21.O. O4.O2.O4.O.O20.2S.S7.S.2S10.2U.U7.U.2U$19.O.O8.O.O61.2A133.O3.4O3.O 23.2S11.2S10.2U11.2U$21.O8.O70.A7.A7.A7.A7.A7.A7.A7.A7.A7.A7.A7.A7.A 6.2A3.G16.O16.O19.S15.S8.U15.U$22.O6.O65.A5.A.A5.A.A5.A.A5.A.A5.A.A5. 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E.E10.E.E66.G2.G6.4G7.3G55.S4.S5.S4.S3.2A3.O4.O5.O4.O5.pA$pA4.pA.pA3. pA.2pA7.2O4.2O8.I5.I22.M2.2M.M2.M.2M2.M15.E.E5.E.E10.E64.G2.G7.2G66.S 15.S3.2A3.O15.O4.2pA$.4pA3.3pA11.8O40.2M.M2.M.2M11.3E6.E7.E10.E.E68.G 10.2G14.3G44.S13.S10.O13.O$20.O2.O.2O.O2.O6.I5.I5.2K3.2K53.E.E10.E66. G9.G2.G6.4G8.G40.S15.S8.O15.O$.4pA3.3pA9.3O6.3O7.2I.2I5.2K.K.K.2K37.E 5.E10.E10.E.E64.G8.G4.G4.G.2G.G7.G40.S2.2S.2S.2S.2S2.S8.O2.2O.2O.2O. 2O2.O$pA4.pA.pA3.pA.2pA5.O10.O8.I.I9.K.K40.E5.E5.2E5.E.E10.E65.3G2.G 6.G3.2G2.2G7.G43.2S.2S.2S.2S14.2O.2O.2O.2O7.2pA$pA2.pA.pA.pA3.pA.pA6. O10.O6.I5.I7.K.K16.M6.M16.2E3.2E5.E8.E10.E.E68.G6.G3.2G2.2G52.S7.S16. O7.O9.pA$pA3.2pA.2pA2.pA.pA5.O12.O5.3I.3I25.M.6M.M30.E7.E.E10.E67.G4. G4.G.2G.G52.S.S3.S.S16.O.O3.O.O9.pA$pA.pA2.pA.pA.pA.pA.2pA5.O10.O19. 2K.2K14.2M6.2M11.3E2.2E.2E2.3E3.2E9.E10.E.E66.G2.G6.4G7.3G43.S2.S.S2. S16.O2.O.O2.O8.2pA$.4pA3.3pA9.2O8.2O42.2M17.E.E.E.E.E.E18.E.E10.E65. 2G64.S2.S.S2.S16.O2.O.O2.O$19.2O10.2O18.2K.2K17.4M18.2E3.2E22.E10.E.E 68.G61.S.S.S.S18.O.O.O.O$3.2pA3.3pA2.2pA4.2O.O6.O.2O39.2M2.2M31.E.E.E 12.E.E10.E66.G9.G2.G47.2S.S.S.2S16.2O.O.O.2O$pA.pA2.pA.pA.pA.pA2.pA5. O.2O4.2O.O20.K.K40.2E3.2E7.E.E.E5.E8.E10.E.E64.G8.G.2G.G43.S.S.S.S.S. S.S.S10.O.O.O.O.O.O.O.O7.pA$pA.4pA.2pA.2pA.pA6.O2.O4.O2.O6.3I.3I7.K.K 38.E.E.E.E.E.E5.E3.E3.2E2.E8.E.E76.3G4.G2.G43.4S2.2S.2S2.4S8.4O2.2O. 2O2.4O$2.pA2.pA.pA.pA.pA.2pA6.3O.2O.3O7.I5.I4.2K.K.K.2K14.2M2.2M13.3E 2.2E.2E2.3E4.E.E8.E.E8.E9.2E72.G2.G42.S2.2S.S.S.S.S.2S2.S6.O2.2O.O.O. O.O.2O2.O5.pA$pA2.2pA3.3pA10.3O.2O.3O9.I.I7.2K3.2K15.2M2.2M31.E3.E5.E 3.E10.E.E9.E68.G.2G.G40.2S3.3S.S.S.3S3.2S.2pA.2O3.3O.O.O.3O3.2O4.pA$ 21.2O6.2O8.2I.2I27.2M4.2M16.2E3.2E7.E.E.E9.E3.3E6.E5.E4.2E67.G2.G41. 2S.S2.S2.S.S2.S2.S.2S.2pA.2O.O2.O2.O.O2.O2.O.2O$6.7pA11.4O10.I5.I27.M .2M.M17.E5.E7.E.E.E5.3E6.3E7.E.E4.2E99.3A13.S.S3.2S3.2S3.S.S6.O.O3.2O 3.2O3.O.O$6.pA2.pA2.pA6.2O4.2O4.2O39.2M2.2M17.E5.E38.E6.E114.3S13.3S 6.3O13.3O$22.2O4.2O$125.Q142.3S.3S18.3O.3O$19.2O.2O4.2O.2O34.2M12.2M 40.2Q17.2Q3.Q122.S.S22.O.O$19.2O.2O4.2O.2O33.3M4.M2.M4.3M39.2Q5.Q.Q8. 3Q4.Q118.S2.S.S2.S16.O2.O.O2.O$19.2O.2O4.2O.2O34.M.M3.M2.M3.M.M47.2Q. Q6.Q3.3Q119.S9.S14.O9.O$68.2M3.M2.M3.2M42.3Q.Q10.2Q.Q.2Q.Q3.Q9.Q104.S 2.S3.S2.S14.O2.O3.O2.O$69.2M8.2M43.Q2.2Q11.Q.Q6.3Q8.2Q103.S2.S5.S2.S 12.O2.O5.O2.O$71.M6.M49.Q10.3Q2.Q4.Q2.2Q.Q.2Q.Q73.2O$68.M2.8M2.M38.Q. 2Q.Q10.Q.2Q.Q8.Q3.3Q3.Q71.O4.O26.S2.S7.S2.S10.O2.O7.O2.O$68.M3.2M2.2M 3.M37.Q.2Q.5Q5.2Q4.6Q4.Q2.2Q5.Q70.O6.O26.2S.S5.S.2S12.2O.O5.O.2O$118. 2Q.2Q11.2Q18.2Q4.Q69.O8.O25.2S.2S3.2S.2S12.2O.2O3.2O.2O$73.M2.M42.Q. 2Q.5Q5.2Q4.6Q4.Q2.2Q5.Q69.2O.4O.2O27.2S.S.S.2S16.2O.O.O.2O$22.O6.O42. M4.M42.Q.2Q.Q10.Q.2Q.Q8.Q3.3Q3.Q$20.2O.2O2.2O.2O41.4M51.Q10.3Q2.Q4.Q 2.2Q.Q.2Q.Q107.S.S.S.S18.O.O.O.O$71.M6.M45.Q2.2Q11.Q.Q6.3Q8.2Q70.2O2. 2O26.S4.S3.S4.S10.O4.O3.O4.O$69.3M6.3M43.3Q.Q10.2Q.Q.2Q.Q3.Q9.Q70.2O 2.2O25.2S3.S.S.S.S3.2S8.2O3.O.O.O.O3.2O! [[ ZOOM 1 THUMBNAIL THUMBSTART EXCLUSIVEPLAY ]]
[R]Investigator rules.
Example: B3S23Investigator
x=98, y = 57, rule = B3S23Investigator 35.R26.R$35.E26.E8$51.E$25.E20.E25.E$24.E21.E7.C18.E$23.E28.EBDE18.E$ 45.CE5.2E$21.CD2.DE43.2ED2.DC$19.E3.DE18.C22.E3.D3ED3.E$42.EDBE4.ER 13.3E3.E$44.2E15.E3.D2.E2.D14.C.ECB$13.C30.ED3.E12.E3.E3.D.E11.CE.D2. E$8.D4.D30.E3.E14.E2.D2E.C13.D.E.D$7.E4.D2.E28.D2.E17.D16.E2.D3.E$12. E3.E28.D19.C15.E3.E$12.ED3.E27.C21.E12.E3.DE$13.E10.2E39.2DE4.2E10.E 6.E$11.E12.ED3.E34.3E.E3.DE$5.E17.2E3.E4.DE28.ED4.E3.2E17.E$10.E4.E7. CD2.E3.CD2.DE24.ED2.DC3.E2.DC7.E4.E$14.E10.D46.D10.E$9.E3.E11.CE5.2E 19.E10.2E5.EC11.E3.E$26.D5.D.E14.E3.D9.E.D5.D$DA8.ECD2.DE9.ED3.DE2.E 14.E3.2E6.E2.ED3.DE9.ED2.DCE8.AD$DA11.DE4.2A6.CD.DC19.E2.DE10.CD.DC6. 2A4.ED11.AD$18.E.A2.C.E4.C22.D13.C.C4.C2.A.E$4.E6.E5.ED6.D2.E.E7.2A 13.2C3.2A7.E11.DE5.E6.E$5.E4.ED5.DE4D.E6.E5.E.A2.C12.C2.A.E5.E8.4DED 5.DE4.E$10.2ED3.DE.4EB.C6.E4.D22.D4.E8.B3E2.ED3.D2E$6.E3.DECD.DEC2.DE 2.E8.E3.E4D14.4DE3.E8.E6.CED.DCED3.E$7.E3.E.2E4.E5.C11.5EB12.B5E11.C 10.2E.E3.E$8.E2.D.CD5.D.EC.D4.ED2.DCE2D21.D.CD2.DE4.D2.ED6.DC.D2.E$ 10.D.2E.DC3.E3.D2.E4.ED26.D3.DE4.E2.D3.E3.CD.2E.D$10.CE3.E4.E2.2E3.E 5.2E24.E.2E5.E3.2E7.E3.EC$10.E5.E7.ED3.E3.E25.C4.E3.E3.DE7.E5.E$10.D 5.D2.E4.2E6.E5.E26.E6.2E4.E2.D5.D$10.ED3.DE2.D3.E2.E4.E6.DE26.E4.E2.E 3.D2.ED3.DE$11.CD.DC2.E3.E4.E7.E3.EDEC11.CEDE4.E7.E4.E3.E2.CD.DC$12.C .CE2.D2.E7.CD2.DE6.DE2.C5.C2.ED7.ED2.DC7.E2.D2.EC.C$16.2E.D11.D3E7.D 2.D5.D2.D8.E.ED11.D.2E$12.E5.EC10.E2.EDE7.ED7.DE7.EDE2.2E10.CE5.E$12. D5.D4.EDE2.EDE2.E.DC.E3.DECE.E.E.ECED3.E.CD.E2.EDE2.EDE5.D5.D$12.ED3. DEDE.C2.DC.E.DC4.DC3.DCE9.ECD3.CD4.CD.E.CD5.EDED3.DE$12.CED.DC2.DC2E 2.D4.D8.DE2.2D5.2D2.ED8.D4.D5.CD2.CD.DEC$15.3E3.D5.E4.E3.DC2.D4.ED3.D E4.D2.CD3.E4.E4.ECD3.3E$15.DC5.E3.D4.D3.DC3.C4.CED.DC5.C3.CD3.D4.D10. CD$13.CD6.D.E.DC3.DC.EDE12.3E10.EDE.CD3.CD3.CD6.DC$20.DC.EDE2.EDE17.D C16.EDE2.EDE2.CD$18.EDE25.CD29.EDE$49.A! [[ ZOOM 2 THUMBNAIL THUMBSTART EXCLUSIVEPLAY Y -9 LOOP 900 ]]
RuleTable rules from a repository.
Example: Byl-loop
x=5, y = 5, rule = Byl-Loop:P200,100 3.C$4.B2$B$.C! [[ ZOOM 2 THUMBNAIL THUMBSTART EXCLUSIVEPLAY ]]
Non-deterministic rules.
Example: Non-deterministic Soldier Bugs
x=113, y = 113, rule = R7,C2,S64-113,B65-95,P100,#,# 49b4o$47b7o$46b10o$45b12o$45b13o19b2o$44b3o5b6o17b6o$22b3o19b3o5b6o16b 9o$20b7o17b3o5b6o15b11o$19b9o16b3o5b6o14b3ob9o$18b12o15b3o2b8o14b3o4b 7o$18b13o14b12o14b3o6b6o$17b5o3b6o15b10o15b3o6b6o$17b2o7b5o16b7o17b3o 6b6o$17b2o7b5o18b3o20b3obo2b7o$17b3o5b6o41b13o$17b3o2b9o42b11o$18b3ob 8o44b8o$19b10o46b6o16b5o$20b7o50b2o17b8o$21b5o69b4o2b4o$94b3o4b5o$93b 3o5b5o$93b5o4b5o$93b5o4b5o$93b5o4b5o$93b6o2b5o$94b12o$9b5o81b10o$8b7o 80b9o$7b9o80b8o$6b10o81b6o$6b11o$5b13o$5b5o3b5o$4b5o5b5o$4b5o5b5o$5b4o 4b5o$5b3o6b4o$6b4o3b4o$7b9o$8b7o$10b3o3$104b4o$102b8o$101b10o$100b4o4b 4o$100b3o5b4o$99b4o5b5o$99b5o4b5o$99b5o4b5o$100b13o$100b12o$101b10o$4b 6o91b10o$3b8o91b8o$2b10o91b6o$2b10o$b12o$13o$5o4b5o$5o4b5o$5o5b4o$b4o 5b3o$b4o4b4o$2b10o$3b8o$5b4o3$100b3o$98b7o$97b9o$96b4o3b4o$95b4o6b3o$ 95b5o4b4o$94b5o5b5o$94b5o5b5o$95b5o3b5o$95b13o$96b11o$10b6o81b10o$9b8o 80b9o$9b9o80b7o$8b10o81b5o$7b12o$7b5o2b6o$6b5o4b5o$6b5o4b5o$6b5o4b5o$ 7b5o5b3o$7b5o4b3o$8b4o2b4o69b5o$9b8o17b2o50b7o$11b5o16b6o46b10o$31b8o 44b8ob3o$29b11o42b9o2b3o$28b13o41b6o5b3o$27b7o2bob3o20b3o18b5o7b2o$27b 6o6b3o17b7o16b5o7b2o$27b6o6b3o15b10o15b6o3b5o$27b6o6b3o14b12o14b13o$27b 7o4b3o14b8o2b3o15b12o$28b9ob3o14b6o5b3o16b9o$29b11o15b6o5b3o17b7o$30b 9o16b6o5b3o19b3o$32b6o17b6o5b3o$34b2o19b13o$56b12o$57b10o$59b7o$60b4o! [[ ZOOM 1 THUMBNAIL THUMBSTART EXCLUSIVEPLAY RANDSEED 1695741111763 LOOP 1000 ]]

Native support for BSFKL, Extended Generations and deficient rules is also planned.[1][2][3] Support for 1D totalistic rules and multiple neighbourhoods rules may also be planned.[4][5]

Repository Rules

LifeViewer can load rules from the Rule: namespace here on LifeWiki. The rules must be in RuleTable format. LifeViewer supports both @TABLE and @TREE format rules. Typically @TREE rules run much faster so if possible ensure there is an @TREE version of the rule before the @TABLE version (if present).

Inline Rules

If LifeViewer does not recognize the rule specified in the pattern header then it will first search the pattern comments after the pattern to see if there is an inline rule definition. This must be in RuleTable format. If there is no inline rule then it will attempt to retrieve the rule from the Rule Repository.

Aliases

LifeViewer contains a large list of alias names for particular rules. This list of rule name aliases can be found by clicking the Aliases button under Help.

Grid and neighbourhood support

LifeViewer supports many different neighbourhoods on square, hexagonal or triangular grids.

Click on "Expand" to the right to view the full list of supported neighbourhoods per grid type.

  • square tiling:
    • outer-totalistic:
      • Moore
      • von Neumann
      • circular
      • cross
      • L2
      • saltire
      • star
      • checkerboard
      • aligned checkerboard
      • hash
      • custom (CoordCA)
      • Gaussian
      • custom weighted
      • far corners/edges
    • non-totalistic R1 Moore
    • non-isotropic
    • Margolus
    • PCA
  • hexagonal or offset-square grid:
    x=50, y = 136, rule = B2/S34H $24bo$22bo$24bo$22b3o$25bo$23b3o$25bobo$25bobo$24b2o$22bo5bo$23bo$27b 2o$27bo$23bo$25b2obo$23bo2bobo$25bob3o$21bo2bob3o$22b3o3b2o$21bo2bob2o $26bobo$23b2o2bo$24b2o3bo$25b2obo$27bo! [[ TRACK -0.25 0.5 GPS 15 GRID ZOOM 8 THUMBNAIL THUMBSTART EXCLUSIVEPLAY ]]
    • outer totalistic:
      • hexagonal
      • tripod
      • asterisk
      • custom (CoordCA)
      • custom weighted
    • non-totalistic
    • non-isotropic
  • triangular grid:
    x=8, y = 6, rule = B456/S34L bo3bo$bo4bo$b2o4bo$2bo5bo$2bo5bo$3b2ob2o! [[ TRACK 1/6 1/6 GPS 8 GRID ZOOM 16 THUMBNAIL THUMBSTART EXCLUSIVEPLAY ]]
    • outer totalistic:
      • triangular Moore
      • triangular edges
      • triangular vertices
      • triangular inner
      • triangular outer
      • triangular biohazard
      • triangular radiation
      • custom (CoordCA)
      • custom weighted

Bounded grid types

LifeViewer supports patterns on "unbounded" grids (maximum 16384x16384 in size) and the following bounded grid types:

  • Plane
  • Cylinder (with optional shift)
  • Torus (with optional shift)
  • Klein-bottle (with optional shift)
  • Cross-surface
  • Sphere (either diagonal)

For range 2+ neighbourhoods, hexagonal, triangular, PCA and Margolus rules only Plane and Torus (without shift) are supported.

User Interface

Main article: LifeViewer/User Interface

Themes

Themes are used to define the colours of cells, the background and the grid lines for 2-state and Generations patterns. Some Themes also specify whether major grid lines are used and if so on what interval.

Themes are primarily used to provide a visual representation of cell history and longevity.

The default Theme is "Blues" but this can be changed by clicking Theme in the Settings menu or with the THEME script command.

x=3, y = 3, rule = Life 3o$2bo$bo! [[ AUTOSTART THUMBNAIL GRID STOP 128 ZOOM 8 X 32 Y -31 HEIGHT 560 ]]

Grid

Some Themes define specific GridLine colours for standard and Major GridLines and also the major GridLine interval.

GRID: grid line colour
GRIDMAJOR: major grid line colour and interval

Two-state Themes

For two-state Themes there are five colours that are used for defining the cell colours:

KeyDescription
BACKGROUNDcell never occupied
ALIVEcell just born
ALIVERAMPcell alive for at least AGESTATES generations (default 63)
DEADcell just died
DEADRAMPcell dead for at least HISTORYSTATES generations (default 63)

New cells are drawn in the ALIVE colour.

If cells stay alive they fade from the ALIVE colour to the ALIVERAMP colour over the next AGESTATES (default 63) generations. This provides a visual representation of cell longevity.

Cells are drawn in the DEAD colour when they die.

If they stay dead they fade from the DEAD colour to the DEADRAMP colour over the next HISTORYSTATES (default 63) generations. This provides a visual representation of cell history.

Click on "Expand" to the right to see the definitions of the available two-state Themes.

Mono
BACKGROUND 0 0 0     Black
ALIVE 255 255 255     White
DEAD 0 0 0     Black
Blues
BACKGROUND 0 0 0     Black
ALIVE 0 255 255     Aqua
ALIVERAMP 255 255 255     White
DEAD 0 0 255     Blue
DEADRAMP 0 0 47    
Fire
BACKGROUND 0 0 0     Black
ALIVE 255 144 0    
ALIVERAMP 255 255 0     Yellow
DEAD 160 0 0    
DEADRAMP 32 0 0    
Poison
BACKGROUND 0 0 0     Black
ALIVE 0 255 255     Aqua
ALIVERAMP 255 255 255     White
DEAD 0 128 0     Green
DEADRAMP 0 24 0    
Yellow
BACKGROUND 0 32 128    
ALIVE 255 255 0     Yellow
ALIVERAMP 255 255 255     White
DEAD 128 0 128     Purple
DEADRAMP 0 47 0    
Gray
BACKGROUND 0 0 0     Black
ALIVE 176 176 176    
ALIVERAMP 240 240 240    
DEAD 104 104 104    
DEADRAMP 16 16 16    
Inverse
BACKGROUND 255 255 255     White
ALIVE 0 0 0     Black
DEAD 255 255 255     White
Day
BACKGROUND 255 255 255     White
ALIVE 0 0 255     Blue
ALIVERAMP 0 0 0     Black
DEAD 0 255 255     Aqua
DEADRAMP 240 240 240    
Occupied
BACKGROUND 0 0 0     Black
ALIVE 240 240 240    
DEAD 240 240 240    
Red
BACKGROUND 0 0 0     Black
ALIVE 240 240 240    
DEAD 160 0 0    
LifeHistory
BACKGROUND 0 0 0     Black
ALIVE 0 240 0    
ALIVERAMP 16 255 16    
DEAD 0 0 160    
DEADRAMP 0 0 96    
Generations
BACKGROUND 0 0 0     Black
ALIVE 255 255 0     Yellow
ALIVERAMP 255 255 255     White
DEAD 255 0 0     Red
DEADRAMP 64 0 0    
Golly
BACKGROUND 48 48 48    
ALIVE 255 255 255     White
DEAD 48 48 48    
GRID 80 80 80    
GRIDMAJOR 112 112 112    
GRIDMAJOR 10
MCell
BACKGROUND 0 0 0     Black
ALIVE 255 255 0     Yellow
DEAD 0 0 0     Black
GRID 64 0 0    
GRIDMAJOR 99 3 1    
GRIDMAJOR 5
Catagolue
BACKGROUND 192 255 238    
ALIVE 0 0 0     Black
DEAD 160 221 204    
GRID 160 221 204    
GRIDMAJOR 160 221 204    
GRIDMAJOR 0
Caterer
BACKGROUND 54 57 62    
ALIVE 255 255 255     White
DEAD 54 57 62    
GRID 0 0 0     Black
GRIDMAJOR 0 0 0     Black
GRIDMAJOR 0
Life32
BACKGROUND 255 255 255     White
ALIVE 0 0 128     Navy
DEAD 255 255 255     White
GRID 192 192 192     Silver
GRIDMAJOR 128 128 128     Gray
GRIDMAJOR 5
Margolus
BACKGROUND 0 0 0     Black
ALIVE 255 255 0     Yellow
ALIVERAMP 255 255 255     White
DEAD 0 0 128     Navy
DEADRAMP 0 0 47    
GRID 32 32 255    
GRIDMAJOR 64 64 128    
GRIDMAJOR 2
PCA
BACKGROUND 0 0 0     Black
ALIVE 176 176 176    
ALIVERAMP 240 240 240    
DEAD 64 64 64    
DEADRAMP 24 24 24    
Book
BACKGROUND 255 255 255     White
ALIVE 0 0 0     Black
DEAD 192 220 255    
DEADRAMP 255 220 192    
GRID 192 192 192     Silver
GRIDMAJOR 209 209 209    
GRIDMAJOR 0

Multi-state Themes

Multi-state Themes are used for Generations rules and there are six colours that are used for defining the cell colours:

KeyDescription
BACKGROUNDcell never occupied
ALIVEcell alive
DYINGcell just started dying
DYINGRAMPcell about to die
DEADcell just died
DEADRAMPcell dead for at least HISTORYSTATES generations (default 63)

New cells are drawn in the ALIVE colour.

Cells are drawn in the DYING colour when they start to die. They then fade to the DYINGRAMP colour over the number of generations defined in the rule.

Once cells reach the DYINGRAMP colour then on the next generation they die and become the DEAD colour.

If they stay dead they fade from the DEAD colour to the DEADRAMP colour over the next HISTORYSTATES (default 63) generations. This provides a visual representation of cell history.

Click on "Expand" to the right to see the definitions of the available multi-state Themes.

Mono
BACKGROUND 0 0 0     Black
ALIVE 255 255 255     White
DYING 255 255 255     White
DYINGRAMP 0 0 0     Black
DEAD 0 0 0     Black
Blues
BACKGROUND 0 0 0     Black
ALIVE 0 255 255     Aqua
DYING 0 255 255     Aqua
DYINGRAMP 0 0 255     Blue
DEAD 0 0 128     Navy
DEADRAMP 0 0 47    
Fire
BACKGROUND 0 0 0     Black
ALIVE 255 144 0    
DYING 255 144 0    
DYINGRAMP 240 0 0    
DEAD 160 0 0    
DEADRAMP 32 0 0    
Poison
BACKGROUND 0 0 0     Black
ALIVE 0 255 255     Aqua
DYING 0 255 255     Aqua
DYINGRAMP 0 192 0    
DEAD 0 128 0     Green
DEADRAMP 0 24 0    
Yellow
BACKGROUND 0 32 128    
ALIVE 255 255 0     Yellow
DYING 255 255 0     Yellow
DYINGRAMP 192 64 64    
DEAD 128 0 128     Purple
DEADRAMP 0 47 0    
Gray
BACKGROUND 0 0 0     Black
ALIVE 240 240 240    
DYING 240 240 240    
DYINGRAMP 160 160 160    
DEAD 104 104 104    
DEADRAMP 16 16 16    
Inverse
BACKGROUND 255 255 255     White
ALIVE 0 0 0     Black
DYING 0 0 0     Black
DYINGRAMP 255 255 255     White
DEAD 255 255 255     White
Day
BACKGROUND 255 255 255     White
ALIVE 0 0 255     Blue
DYING 0 0 255     Blue
DYINGRAMP 0 255 255     Aqua
DEAD 0 192 192    
DEADRAMP 240 240 240    
Occupied
BACKGROUND 0 0 0     Black
ALIVE 240 240 240    
DYING 240 240 240    
DEAD 240 240 240    
Red
BACKGROUND 0 0 0     Black
ALIVE 255 255 255     White
DYING 160 160 160    
DEAD 160 0 0    
LifeHistory
BACKGROUND 0 0 0     Black
ALIVE 16 255 16    
DYING 16 255 16    
DYINGRAMP 0 128 160    
DEAD 0 0 160    
DEADRAMP 0 0 96    
Generations
BACKGROUND 0 0 0     Black
ALIVE 255 255 0     Yellow
DYING 255 255 0     Yellow
DYINGRAMP 255 0 0     Red
DEAD 128 0 0     Maroon
DEADRAMP 64 0 0    
Golly
BACKGROUND 48 48 48    
ALIVE 255 255 0     Yellow
DYING 255 255 0     Yellow
DYINGRAMP 255 0 0     Red
DEAD 48 48 48    
MCell
BACKGROUND 0 0 0     Black
ALIVE 255 255 0     Yellow
DYING 255 255 0     Yellow
DYINGRAMP 0 255 0     Lime
DEAD 0 0 0     Black
Catagolue
BACKGROUND 192 255 238    
ALIVE 0 0 0     Black
DYING 2 129 2    
DYINGRAMP 96 192 139    
DEAD 160 221 204    
Caterer
BACKGROUND 54 57 62    
ALIVE 255 170 0    
DYING 255 170 0    
DYINGRAMP 255 85 0    
DEAD 54 57 62    
Life32
BACKGROUND 255 255 255     White
ALIVE 0 0 128     Navy
DYING 0 0 128     Navy
DYINGRAMP 0 0 64    
DEAD 255 255 255     White
Margolus
BACKGROUND 0 0 0     Black
ALIVE 255 255 0     Yellow
DYING 255 255 0     Yellow
DYINGRAMP 64 64 128    
DEAD 0 0 128     Navy
DEADRAMP 0 0 47    
PCA
BACKGROUND 0 0 0     Black
ALIVE 240 240 240    
DYING 240 240 240    
DYINGRAMP 160 160 160    
DEAD 64 64 64    
DEADRAMP 24 24 24    
Book
BACKGROUND 255 255 255     White
ALIVE 0 0 0     Black
DYING 128 128 128     Gray
DYINGRAMP 24 24 24    
DEAD 192 220 255    
DEADRAMP 255 220 192    

Pattern Identification

LifeViewer is able to identify spaceships, oscillators and still-life patterns. For oscillators it can display a table and graphical map of periods and frequencies per cell.

Scripts

Main article: LifeViewer/Scripts

LifeViewer supports a large number of script commands than can be used to control playback, the camera, labels and annotations, colours and many other aspects.

Info

LifeViewer engine information and details about the currently loaded pattern can be found by pressing 'I', or clicking the Info button under Help.

Planned features

The following features and functionalities are planned for future builds of LifeViewer:

  • Theme support for [R]Super[6]

Possible future features

Click on "Expand" to the right to view the list of other requested features that may appear at some stage.

Rules

  • Native support for BSFKL rules[7]
  • Native support for Extended Generations[7]
  • Native support for 1D totalistic rules[8]
  • Native support for higher-range Margolus rules[9]
  • Native support for one-dimensional rules with a range greater than 2[10]
  • Native support for alternating rules with more than 3 constituent rules[11]

Non-square grids/selections

  • Diagonal/von Neumann-like selections[12]
  • Selection shapes which are more useful for hexagonal and triangular grids[13][14][15]
  • Selection flip/rotate transformations for hexagonal and triangular grids[14]
  • Directions of spaceships on hexagonal and triangular grids from Identify[16]
  • Calculating the mod of oscillators and spaceships on hexagonal and triangular grids in Identify[15]

[R]Super/[R]History

  • KILLGLIDERS functionality in [R]Super[17]
  • Support for pasting in [R]History/[R]Super-exclusive cells[18]
  • Selection inversion support for [R]History and [R]Super[17]

Known bugs

Main article: LifeViewer/Known bugs

References

  1. ↑ Chris Rowett (January 26, 2019). Re: Pattern viewer for forum threads (discussion thread) at the ConwayLife.com forums
  2. ↑ Chris Rowett (January 26, 2019). Re: Pattern viewer for forum threads (discussion thread) at the ConwayLife.com forums
  3. ↑ Chris Rowett (December 20, 2019). Re: Pattern viewer for forum threads (discussion thread) at the ConwayLife.com forums
  4. ↑ Chris Rowett (October 15, 2019). Re: Pattern viewer for forum threads (discussion thread) at the ConwayLife.com forums
  5. ↑ Chris Rowett (May 6, 2019). Re: Pattern viewer for forum threads (discussion thread) at the ConwayLife.com forums
  6. ↑ https://conwaylife.com/forums/viewtopic.php?f=3&t=1622&p=129493#p129493
  7. ↑ 7.0 7.1 https://conwaylife.com/forums/viewtopic.php?f=3&t=1622&p=86409#p86409
  8. ↑ https://conwaylife.com/forums/viewtopic.php?f=3&t=1622&p=84188#p84188
  9. ↑ https://conwaylife.com/forums/viewtopic.php?f=3&t=1622&p=82121#p82121
  10. ↑ https://conwaylife.com/forums/viewtopic.php?f=3&t=1622&p=82283#p82283
  11. ↑ https://conwaylife.com/forums/viewtopic.php?f=3&t=1622&p=129157#p129157
  12. ↑ https://conwaylife.com/forums/viewtopic.php?f=3&t=1622&p=70959#p70959
  13. ↑ https://conwaylife.com/forums/viewtopic.php?f=3&t=1622&p=78941#p78941
  14. ↑ 14.0 14.1 https://conwaylife.com/forums/viewtopic.php?f=3&t=1622&p=80331#p80331
  15. ↑ 15.0 15.1 https://conwaylife.com/forums/viewtopic.php?f=3&t=1622&p=87226#p87226
  16. ↑ https://conwaylife.com/forums/viewtopic.php?f=3&t=1622&p=84510#p84510
  17. ↑ 17.0 17.1 https://conwaylife.com/forums/viewtopic.php?f=3&t=1622&p=129156&hilit=backlog#p129156
  18. ↑ https://conwaylife.com/forums/viewtopic.php?p=93893#p93893

Forum threads

Adam P. Goucher's Catagolue
History • apgcode • Naming conventions
Software
Results
Life (Still lifes • Oscillators • Spaceships • Top 100 objects • Objects by symmetry) • HighLife (Still lifes • Oscillators • Spaceships) • Pedestrian Life (Most common objects) • Grounded Life (Most common objects)
Tutorials
Related
Census • Common • Frequency class • Natural • Soup • Other censuses (Flammenkamp • Okrasinski • TOLLCASS)
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