LifeViewer

	LifeViewer
Homepage	Click here
Purpose	Life simulation
Created by	Chris Rowett
Platform	HTML5 / Javascript

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.

If you want to use LifeViewer on your own site then the latest release can be downloaded here.

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.
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 oscillator and spaceship periods.
Automatic scaling for high DPI displays including smartphones and tablets.
Editor with unlimitied undo/redo and multiple clipboards.

Rule support

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 Life-like 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 Life-like 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 (even numbers only).
- 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$22.O6.O65.A5.A.A5.A.A5.A.A5.A.A5.A.A5. 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S16.O2.O.O2.O8.2pA$.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 ]]

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 ]]

Grid and neighbourhood support

square grid:
- outer-totalistic:
  - Moore
  - von Neumann
  - circular
  - cross
  - L2
  - saltire
  - star
  - checkerboard
  - hash
  - custom (CoordCA)
- non-totalistic
- non-isotropic
- Margolus
- PCA
- Weighted
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$27bo! [[ TRACK -0.25 0.5 GPS 15 GRID ZOOM 8 THUMBNAIL THUMBSTART EXCLUSIVEPLAY ]]
- outer totalistic:
  - hexagonal
  - tripod
  - asterisk
  - custom (CoordCA)
- non-totalistic
- non-isotropic
triangular grid:
x=8, y = 6, rule = B456/S34L bo3bo$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
  - custom (CoordCA)

Bounded grid types

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

For range 2+ neighbourhoods only Plane, and Torus (without shift) are supported.

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

Aliases

The current list of rule name aliases can be found by clicking the Aliases button under Help.

Keyboard commands

A visual map of keyboard shortcuts is shown below:

Playback controls

Key	Description
Enter	toggle play / pause
Space	pause / next generation
B	pause / previous generation
Backspace	pause / previous generation
Tab	pause / next step
Shift Tab	pause / previous step
Esc	pause if playing
R	reset to generation 0
-	decrease generation speed
+	increase generation speed
Shift -	minimum generation speed
Shift +	maximum generation speed
D	decrease step size
E	increase step size
Shift D	minimum step size
Shift E	maximum step size
0	reset step and speed
Alt T	toggle throttling
W	toggle waypoint playback and loop
Shift P	toggle just loop
Alt O	toggle autostart

Multi-Viewer controls

Key	Description
Shift R	reset all LifeViewers to generation 0
Z	stop playback in all other LifeViewers
Shift Z	stop playback in all LifeViewers

Camera controls

Key	Description
V	restore saved camera position
Shift V	save current camera position
F	fit pattern to display
Shift F	toggle autofit
Shift H	toggle autofit history mode
Ctrl F	fit selection to display
Ctrl M	center pattern on display
[	zoom out
]	zoom in
Shift [	halve zoom
Shift ]	double zoom
1	1x zoom
2	2x zoom
4	4x zoom
8	8x zoom
6	16x zoom
3	32x zoom
Shift 3	64x zoom
Shift 1	integer zoom
Shift 2	-2x zoom
Shift 4	-4x zoom
Shift 8	-8x zoom
Shift 6	-16x zoom
Left	pan left
Right	pan right
Up	pan up
Down	pan down
Shift Left	pan north west
Shift Right	pan south east
Shift Up	pan north east
Shift Down	pan south west
<	rotate left
>	rotate right
Shift <	rotate left 90 degrees
Shift >	rotate right 90 degrees
5	reset angle

View controls

Key	Description
Q	increase number of layers
A	decrease number of layers
P	increase layer depth
L	decrease layer depth
C	next colour theme
Shift C	previous colour theme
Alt C	default theme

Display controls

Key	Description
G	toggle generation statistics
Shift G	toggle generation display mode
Y	toggle population graph
Shift Y	toggle graph lines
7	decrease graph opacity
9	increase graph opacity
Shift W	toggle performance warning
/	toggle cell type for hex and triangular grids
T	toggle timing information
Shift T	toggle extended timing information
I	toggle pattern and engine information
Shift I	toggle information bar
Ctrl Q	toggle cell anti-aliasing
Alt B	toggle cell borders
X	toggle gridlines
Shift X	toggle major gridlines
Ctrl G	toggle auto gridlines
Alt G	convert pattern to [Rule]Super
Alt H	convert pattern to [Rule]History
Alt J	convert pattern to [Rule]Standard
Ctrl L	toggle kill escaping gliders
S	toggle stars
O	open screenshot in separate window
Shift O	open population graph in separate window
Shift U	toggle UI
Alt W	toggle rainbow mode

Pattern controls

Key	Description
Alt N	new pattern
Alt R	change rule
Ctrl O	open original or last saved pattern
Ctrl+Shift O	open clipboard as pattern
Ctrl S	save pattern
Alt Z	randomize pattern and rule
Ctrl+Alt Z	randomize pattern only
F6	toggle oscillator and spaceship identification
Ctrl+F6	fast identification

External clipboard controls

Key	Description
Alt S	toggle sync cut and copy with external clipboard
Ctrl+Shift C	copy original pattern
Ctrl C	copy current selection
Ctrl+Alt C	copy current selection with comments
Ctrl+Shift X	cut original pattern
Ctrl X	cut current selection
Ctrl+Alt X	cut current selection with comments
Ctrl J	copy rule definition
K	copy camera position
Shift K	copy camera position and view

Edit controls

Key	Description
F1	toggle draw/pan mode
F2	draw mode
Shift F2	toggle smart drawing
F3	pick mode
F4	select mode
F5	pan mode
Ctrl A	select all
Shift A	shrink selection
Alt A	toggle auto-shrink selection
Ctrl C	copy
Ctrl I	invert selection
Ctrl K	remove selection
Ctrl V	paste
Ctrl+Shift V	paste to selection
Ctrl X	cut
Ctrl Y	redo edit
Ctrl Z	undo edit
Ctrl+Shift Z	redo edit
Ctrl Space	advance selection
Shift Space	advance outside
Shift L	cycle paste location
Shift M	cycle paste mode
Shift 5	random fill
Alt K	pick cell state to replace with drawing state
Ctrl+Alt K	clear current drawing state cells
Del	clear cells in selection
Shift Del	clear outside selection
>	rotate selection clockwise
<	rotate selection counter-clockwise
Alt X	flip selection horizontally
Alt Y	flip selection vertically
Alt Left	nudge selection 1 cell left
Alt Right	nudge selection 1 cell right
Alt Up	nudge selection 1 cell up
Alt Down	nudge selection 1 cell down
Esc	hide paste
Enter	perform paste
Ctrl 0	select state 0 for drawing
Ctrl 1	select state 1 for drawing
Alt 0	make clipboard 0 active
Alt 1	make clipboard 1 active
Alt 2	make clipboard 2 active
Alt 3	make clipboard 3 active
Alt 4	make clipboard 4 active
Alt 5	make clipboard 5 active
Alt 6	make clipboard 6 active
Alt 7	make clipboard 7 active
Alt 8	make clipboard 8 active
Alt 9	make clipboard 9 active

Help controls

Key	Description
Up	scroll up one line
Down	scroll down one line
Page Up	scroll up one page
Page Down	scroll down one page
Shift Page Up	scroll up one section
Shift Page Down	scroll down one section
Home	go to first help page
End	go to last help page

Themes

Themes are used to provide a visual representation of cell history and longevity and also define grid colours.

Grid

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

Two-state Themes

BACKGROUND: cell never occupied
ALIVE: cell just born
ALIVERAMP: cell alive for several generations
DEAD: cell just died
DEADRAMP: cell dead for several generations

There are 63 (AGESTATES) states from ALIVE to ALIVERAMP.
There are 63 (HISTORYSTATES) states from DEAD to DEADRAMP.

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.

BACKGROUND: cell never occupied
ALIVE: cell alive
DYING: cell just starting dying
DYINGRAMP: cell about to die
DEAD: cell just died
DEADRAMP: cell dead for several generations

Rule defines states from DYING to DYINGRAMP
63 (HISTORYSTATES) states from DEAD to DEADRAMP

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

Scripts

Scripts must be embedded in pattern comments. Commands must be surrounded by whitespace.

For example loading the following pattern into LifeViewer will start playback automatically (AUTOSTART) and then stop at generation 30 (STOP 30).

 #C [[ AUTOSTART STOP 30 ]]
 x = 3, y = 3, rule = Life
 o$
 obo$
 2o!

It's also valid to have script commands after the RLE since this is also treated as comments.

 x = 3, y = 3, rule = Life
 o$
 obo$
 2o!
 [[
   ANGLE 30
   GPS 5
   AUTOSTART
   THEME Fire
 ]]

Only text surrounded by [[ and ]] is interpreted as script commands.

 #C An example [[ ZOOM 16 ]] with camera settings [[ X -4 Y 5 ]]
 #C and [[ GRID ]] grid lines.
 x = 3, y = 3, rule = Life
 o$
 obo$
 2o!

Parameter conventions

Parameter	Description
A\|B	either A or B
(A)	A is optional
A*	zero or more A
A+	one or more A
<1..3>	integer range
<1.0..3.0>	decimal range

General

Command	Description
[[	start script section
]]	end script section
SUPPRESS	suppress overwrite warning

Playback

Command	Description
AUTOSTART (OFF)	start play automatically
LOOP <1..>\|OFF	loop at generation
STOP <1..>\|OFF	stop at generation
GPS <1..60>	set steps per second
STEP <1..64>	set generations per step
HARDRESET	always use hard reset
VIEWONLY	disable playback
NOSTEPBACK	disable step back
NOREPORT	disable stop messages
NOPERFWARNING	disable performance warning
NOTHROTTLE	disable playback throttling
EXCLUSIVEPLAY	starting playback pauses others
IGNOREEXCLUSIVE	ignore other pause requests

Camera

Command	Description
ANGLE <0..359>	set camera angle
X <-4096..4096>	set camera x position
Y <-4096..4096>	set camera y position
ZOOM <-16.0..64.0>	set camera zoom
Z	same as ZOOM
AUTOFIT (OFF)	fit pattern to display
HISTORYFIT (OFF)	autofit uses pattern history
STATE1FIT (OFF)	autofit only uses state 1
TRACK X Y	camera tracking
X	horizontal speed cells/gen
Y	vertical speed cells/gen
TRACKBOX E S W N	camera box tracking
E	east edge speed cells/gen
S	south edge speed cells/gen
W	west edge speed cells/gen
N	north edge speed cells/gen
TRACKLOOP P X Y	camera tracking with loop
P	period
X	horizontal speed cells/gen
Y	vertical speed cells/gen

Waypoints

Command	Description
T <0..>	waypoint at generation
PAUSE <0.0..>	pause for time
LINEAR ALL\|X\|Y\|ZOOM	linear motion
BEZIER ALL\|X\|Y\|ZOOM	bezier motion (default)
TIME	save timing at waypoint start

Points of interest

Command	Description
POI	define point of interest
POIT <0..>	start POI at generation
POIRESET	reset generation at POI
POIPLAY	start playback at POI
POISTOP	stop playback at POI
POITRANS <0..200>	set POI transition speed
<command>\|ALL INITIAL	use initial value for POI
"<string>"	define message
POIADDLABELS	add Labels as POIs

Annotations

Command	Description
LABEL X Y ZOOM	define label at position
(MAXZOOM) (FIXED)	... zoom range and fixed position
"<string>"	... label text
LABELSIZE <4..128>	define label font size
(FIXED)	... optionally fix size
LABELALPHA <0.0..1.0>	define label font alpha
LABELT <0..> <0..> <0..>	generation range / fade
LABELANGLE <0..359>	label angle
(FIXED)	... optionally fix angle
LABELTARGET X Y D\|OFF	label target and distance
LABELTRACK DX DY\|FIXED	label move per generation
ARROW X1 Y1 X2 Y2 ZOOM	define arrow at position
(MAXZOOM) (FIXED)	... zoom range and fix position
ARROWSIZE <1..64> <0.0..1.0>	line width and head multiple
ARROWALPHA <0.0..1.0>	define arrow alpha
ARROWT <0..> <0..> <0..>	generation range / fade
ARROWANGLE <0..359>	arrow angle
(FIXED)	... optionally fix angle
ARROWTARGET X Y D\|OFF	arrow target and distance
ARROWTRACK DX DY\|FIXED	arrow move per generation
POLYLINE X1 Y1 X2 Y2 .. ZOOM	define outline polygon
(MAXZOOM) (FIXED)	... zoom range and fix position
POLYFILL X1 Y1 X2 Y2 .. ZOOM	define filled polygon
(MAXZOOM) (FIXED)	... zoom range and fix position
POLYSIZE <1..64>	line width
POLYALPHA <0.0..1.0>	define polygon alpha
POLYT <0..> <0..> <0..>	generation range / fade
POLYANGLE <0..359>	polygon angle
(FIXED)	... optionally fix angle
POLYTARGET X Y D\|OFF	polygon target and distance

Display

Command	Description
WIDTH <560..4096>	set LifeViewer width
HEIGHT <240..4096>	set LifeViewer height
POPUPWIDTH <560..4096>	set popup width
POPUPHEIGHT <240..4096>	set popup height
TITLE "<string>"	set popup window title
#B	program build number
#N	pattern name
#O	pattern originator
#R	rule name
#A	rule alias
#T	program title
#0..9	saved timing as average fps
##	# symbol
LAYERS <1..10>	set number of layers
DEPTH <0.0..10.0>	set layer depth
GRID (OFF)	display gridlines
GRIDMAJOR <0..16>	set major grid line interval
AGESTATES <0..63>	number of age states to draw
HISTORYSTATES <0..63>	number of history states to draw
STARS (OFF)	display stars
HEXCELLS	hexagonal cells for hexagonal grid
TRIANGULARCELLS	triangular cells for triangular grid
SQUARECELLS	square cells for hexagonal or triangular grid
CELLBORDERS	display cell borders
NOGUI	disable menus and hotkeys
AUTOHIDEGUI	hide menus during playback
SHOWTIMING	show timing information
EXTENDEDTIMING	extended timing information
SHOWGENSTATS	show generation statistics
SHOWINFOBAR	show information bar
RAINBOW	use rainbow colours

Thumbnails

Command	Description
THUMBNAIL (OFF)	start at 1/4 size
THUMBSIZE <2..4>	set thumbnail divisor
THUMBLAUNCH (OFF)	thumbnail launches viewer
THUMBZOOM <-16.0..64.0>	set thumbnail zoom
THUMBSTART	start playback on thumbnail expand

Population Graph

Command	Description
GRAPH	display population graph
GRAPHOPACITY <0.0..1.0>	population graph opacity
GRAPHPOINTS	population graph use points
NOGRAPH	disable population graph

Colours

Command	Description
THEME <0..19>\|name	set theme
name = CUSTOM	set custom theme
COLOR BACKGROUND R G B	set theme background
COLOR ALIVE R G B	set theme alive color
COLOR ALIVERAMP R G B	set theme alive ramp
COLOR DEAD R G B	set theme dead color
COLOR DEADRAMP R G B	set theme dead ramp
COLOR DYING R G B	set theme dying color
COLOR DYINGRAMP R G B	set theme dying ramp
COLOR BOUNDARY R G B	set boundary color
COLOR <0..1> R G B	set state color
COLOR BOUNDED R G B	set bounded color
COLOR SELECT R G B	set select color
COLOR PASTE R G B	set paste color
COLOR ADVANCE R G B	set advance color
COLOR GRID R G B	set grid color
COLOR GRIDMAJOR R G B	set grid major color
COLOR STARS R G B	set star color
COLOR TEXT R G B	set waypoint message color
COLOR ERROR R G B	set error message color
COLOR GRAPHBG R G B	set graph background color
COLOR GRAPHAXIS R G B	set graph axis color
COLOR GRAPHALIVE R G B	set graph alive color
COLOR GRAPHBIRTH R G B	set graph birth color
COLOR GRAPHDEATH R G B	set graph death color
COLOR LABEL R G B	set label text color
COLOR ARROW R G B	set arrow line color
COLOR POLY R G B	set polygon color
COLOR UIFOREGROUND R G B	set UI foreground color
COLOR UIBACKGROUND R G B	set UI background color
COLOR UIHIGHLIGHT R G B	set UI highlight text color
COLOR UISELECT R G B	set UI selected color
COLOR UILOCKED R G B	set UI locked color
COLOR UIBORDER R G B	set UI border color
COLOUR	same as COLOR

Pattern

Command	Description
XOFFSET <-4096..4096>	set pattern x offset
YOFFSET <-4096..4096>	set pattern y offset
DELETERANGE <1..16>	set boundary delete range
NOCOPY	disable pattern source copy
NOSOURCE	hide pattern source
MAXGRIDSIZE <9..14>	set maximum grid size 2^n
RECIPE name X Y (<1..>)+	create a named recipe
RLE name rle	create a named rle
(X Y) (TRANS)	... X Y and transformation
IDENTITY	identity
FLIP	flip
FLIPX	flip X
FLIPY	flip Y
SWAPXY	swap X and Y
SWAPXYFLIP	swap X and Y and flip
RCW	rotate clockwise
RCCW	rotate counter-clockwise
PASTE name\|rle (X Y)	paste rle at optional X Y
(TRANS)	... optional transformation
PASTET <0..>	set paste generation
(recipe\|<1..>+)*	... optional delta list
PASTET EVERY <1..>	set paste interval
(<0..> (<1..>))	... optional start and end
PASTEDELTA X Y	set position delta for PASTET EVERY
PASTEMODE <0..15>\|mode	set paste mode
	0 0000 ZERO 1 0001 AND 2 0010 0010 3 0011 X\|COPY 4 0100 DIFF 5 0101 Y 6 0110 XOR 7 0111 OR 8 1000 NOR 9 1001 XNOR 10 1010 NOTY 11 1011 1011 12 1100 NOTX 13 1101 1101 14 1110 NAND 15 1111 ONE
KILLGLIDERS	suppress escaping gliders

Randomize

Command	Description
RANDOMIZE	create random pattern
RANDSEED <string>	set random seed
RANDWIDTH <1..1024>	set random pattern width
RANDHEIGHT <1..1024>	set random pattern height
RANDFILL <1..100>	set random pattern fill percentage
RANDCHANCE FIXED	keep rule fixed
RANDCHANCE <item> <0..100>	set percentage chance for <item>
ALL	all conditions
B	all birth conditions
S	all survival conditions
B<0..n>	specified birth condition
S<0..n>	specified survival condition

Colours

The following names can be used in place of R G B. For example: [[ COLOUR ALIVE Green ]]

AliceBlue	240	248	255
AntiqueWhite	250	235	215
Aqua	0	255	255
Aquamarine	127	255	212
Azure	240	255	255
Beige	245	245	220
Bisque	255	228	196
Black	0	0	0
BlanchedAlmond	255	235	205
Blue	0	0	255
BlueViolet	138	43	226
Brown	165	42	42
BurlyWood	222	184	135
CadetBlue	95	158	160
Chartreuse	127	255	0
Chocolate	210	105	30
Coral	255	127	80
CornflowerBlue	100	149	237
Cornsilk	255	248	220
Crimson	220	20	60
Cyan	0	255	255
DarkBlue	0	0	139
DarkCyan	0	139	139
DarkGoldenRod	184	134	11
DarkGray	169	169	169
DarkGreen	0	100	0
DarkKhaki	189	183	107
DarkMagenta	139	0	139
DarkOliveGreen	85	107	47
DarkOrange	255	140	0
DarkOrchid	153	50	204
DarkRed	139	0	0
DarkSalmon	233	150	122
DarkSeaGreen	143	188	143
DarkSlateBlue	72	61	139
DarkSlateGray	47	79	79
DarkTurquoise	0	206	209
DarkViolet	148	0	211
DeepPink	255	20	147
DeepSkyBlue	0	191	255
DimGray	105	105	105
DodgerBlue	30	144	255
FireBrick	178	34	34
FloralWhite	255	250	240
ForestGreen	34	139	34
Fuchsia	255	0	255
Gainsboro	220	220	220
GhostWhite	248	248	255
Gold	255	215	0
GoldenRod	218	165	32
Gray	128	128	128
Green	0	128	0
GreenYellow	173	255	47
HoneyDew	240	255	240
HotPink	255	105	180
IndianRed	205	92	92
Indigo	75	0	130
Ivory	255	255	240
Khaki	240	230	140
Lavender	230	230	250
LavenderBlush	255	240	245
LawnGreen	124	252	0
LemonChiffon	255	250	205
LightBlue	173	216	230
LightCoral	240	128	128
LightCyan	224	255	255
LightGoldenRodYellow	250	250	210
LightGray	211	211	211
LightGreen	144	238	144
LightPink	255	182	193
LightSalmon	255	160	122
LightSeaGreen	32	178	170
LightSkyBlue	135	206	250
LightSlateGray	119	136	153
LightSteelBlue	176	196	222
LightYellow	255	255	224
Lime	0	255	0
LimeGreen	50	205	50
Linen	250	240	230
Magenta	255	0	255
Maroon	128	0	0
MediumAquaMarine	102	205	170
MediumBlue	0	0	205
MediumOrchid	186	85	211
MediumPurple	147	112	219
MediumSeaGreen	60	179	113
MediumSlateBlue	123	104	238
MediumSpringGreen	0	250	154
MediumTurquoise	72	209	204
MediumVioletRed	199	21	133
MidnightBlue	25	25	112
MintCream	245	255	250
MistyRose	255	228	225
Moccasin	255	228	181
NavajoWhite	255	222	173
Navy	0	0	128
OldLace	253	245	230
Olive	128	128	0
OliveDrab	107	142	35
Orange	255	165	0
OrangeRed	255	69	0
Orchid	218	112	214
PaleGoldenRod	238	232	170
PaleGreen	152	251	152
PaleTurquoise	175	238	238
PaleVioletRed	219	112	147
PapayaWhip	255	239	213
PeachPuff	255	218	185
Peru	205	133	63
Pink	255	192	203
Plum	221	160	221
PowderBlue	176	224	230
Purple	128	0	128
RebeccaPurple	102	51	153
Red	255	0	0
RosyBrown	188	143	143
RoyalBlue	65	105	225
SaddleBrown	139	69	19
Salmon	250	128	114
SandyBrown	244	164	96
SeaGreen	46	139	87
SeaShell	255	245	238
Sienna	160	82	45
Silver	192	192	192
SkyBlue	135	206	235
SlateBlue	106	90	205
SlateGray	112	128	144
Snow	255	250	250
SpringGreen	0	255	127
SteelBlue	70	130	180
Tan	210	180	140
Teal	0	128	128
Thistle	216	191	216
Tomato	255	99	71
Turquoise	64	224	208
Violet	238	130	238
Wheat	245	222	179
White	255	255	255
WhiteSmoke	245	245	245
Yellow	255	255	0
YellowGreen	154	205	50

Info

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

References

↑ Chris Rowett (January 26, 2019). Re: Pattern viewer for forum threads (discussion thread) at the ConwayLife.com forums
↑ Chris Rowett (January 26, 2019). Re: Pattern viewer for forum threads (discussion thread) at the ConwayLife.com forums
↑ Chris Rowett (December 20, 2019). Re: Pattern viewer for forum threads (discussion thread) at the ConwayLife.com forums
↑ Chris Rowett (October 15, 2019). Re: Pattern viewer for forum threads (discussion thread) at the ConwayLife.com forums

External links

LifeViewer at the Life Lexicon

Forum threads

LifeViewer - Life simulator in HTML5 (discussion thread) at the ConwayLife.com forums

Pattern viewer for forum threads (discussion thread) at the ConwayLife.com forums

[post68678-1] Chris Rowett (January 26, 2019). Re: Pattern viewer for forum threads (discussion thread) at the ConwayLife.com forums

[post68691-2] Chris Rowett (January 26, 2019). Re: Pattern viewer for forum threads (discussion thread) at the ConwayLife.com forums

[post86409-3] Chris Rowett (December 20, 2019). Re: Pattern viewer for forum threads (discussion thread) at the ConwayLife.com forums

[post84188-4] Chris Rowett (October 15, 2019). Re: Pattern viewer for forum threads (discussion thread) at the ConwayLife.com forums

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LifeViewer

Contents

LifeViewer features

Rule support

Grid and neighbourhood support

Bounded grid types

Aliases

Keyboard commands

Playback controls

Multi-Viewer controls

Camera controls

View controls

Display controls

Pattern controls

External clipboard controls

Edit controls

Help controls

Themes

Grid

Two-state Themes

Multi-state Themes

Scripts

Parameter conventions

General

Playback

Camera

Waypoints

Points of interest

Annotations

Display

Thumbnails

Population Graph

Colours

Pattern

Randomize

Colours

Info

References

External links

Forum threads

Navigation menu

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