LifeViewer

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

LifeViewer is a scriptable pattern viewer and editor used to simulate Life and other Life-like cellular automata.

x=59, y = 7, rule = B3/S23 o5b5ob5ob5obo3bob5ob5obobobob5ob4o$o7bo3bo5bo5bo3bo3bo3bo5bobobobo5bo 3bo$o7bo3bo5bo5bo3bo3bo3bo5bobobobo5bo3bo$o7bo3b3o3b3o3bo3bo3bo3b3o3bo bobob3o3b4o$o7bo3bo5bo5bo3bo3bo3bo5bobobobo5bo3bo$o7bo3bo5bo6bobo4bo3b o5bobobobo5bo3bo$5ob5obo5b5o3bo3b5ob5o2bobo2b5obo3bo! #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 supports:

• Totalistic Life-like cellular automata.
• Non-totalistic Life-like cellular automata.
• 1D totalistic cellular automata.
• Larger than Life (LtL) rules.
• Higher-range outer-totalistic (HROT) rules.
• Generations rules.
• Alternating rules.
• MAP rules.
• [R]History rules.
• 2-state Margolus rules.
• Partitioned cellular automata (PCA) rules.
• RuleTable rules from a repository.

Depending on the rule family it supports Moore, hexagonal, von Neumann, triangular, Circular and Margolus neighbourhoods and also bounded grids.

LifeViewer features:

• Smooth non-integer zoom and rotation.
• Colour themes with cell history and longevity.
• Square, hexagonal and triangular grid displays.
• 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.
• Pattern annotation with Labels, Arrows, Lines and Polygons.
• Programatically pasting cells onto the grid at defined intervals (for example: glider injection).
• Identification of oscillator and spaceship periods.
• Automatic scaling for high DPI displays including smartphones and tablets.
• Editor with unlimitied undo/redo and multiple clipboards.

The keyboard shortcuts are shown below:

External links

• Release notes
• LifeViewer homepage
• LifeViewer files

• 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