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Published on Oct 9, 2012

SmoothLife is a family of rules created by Stephan Rafler. It was designed as a continuous version of Conway's Game of Life - using floating point values instead of integers. This rule is SmoothLifeL which supports many interesting phenomena such as gliders that can travel in any direction, rotating pairs of gliders, wickstretchers and the appearance of elastic tension in the 'cords' that join the blobs.

Run it for yourself:
Add this line to the top of SmoothLifeConfig.txt and run the exe:
2 1 10.0 3.0 10.0 0.100 0.257 0.336 0.365 0.549 2 4 4 0.028 0.147 // L

Or download Ready( http://code.google.com/p/reaction-dif...) and open the included pattern: Patterns/smoothlife_smoothlifeL.vti

Slides showing how the rule works: http://www.youtube.com/watch?v=iyTIXR...
Paper describing SmoothLife and SmoothLifeL: http://arxiv.org/abs/1111.1567
More videos by Stephan: https://www.youtube.com/playlist?list...
Original Google+ post: http://plus.google.com/11021484805976...

Outer radius: 20.0
Radius ratio: 3.0
Birth range: 0.257 - 0.336
Survival range: 0.365 - 0.549
Alpha_n (outer sigmoid width): 0.028
Alpha_m (inner sigmoid width): 0.147
Timestep: 0.05 (Euler integration)
Frames: 10819 (saving 1 image per 8 timesteps)
Total time units elapsed: 4327.6
World size: 512x512, with toroidal wrap-around.
Color representation: linear mapping of [0,1] onto [black,white]
Computation time: 74 minutes on an nVidia GeForce GTX 460. That's in Ready and for a high quality version. For viewing it runs in realtime. Stephan's software (at the sourceforge link above) runs much faster because it uses FFT.

Comments • 126

Tim Hutton
There are a lot of wacky and psychedelic CA rules out there but SmoothLife by Stephan Rafler is different. Designed as a continuous version of Conway's Game of Life (using floating point numbers instead of integers), it supports a glider that can travel in any direction, as well as rotating pairs and strange elastic rope things. Don't miss the nice glider collision at around 3:12. Technical details can be found on the youtube page: SmoothLifeL
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What is the music? I like it
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Logan Richter
this looks like its alive
Pretty awesome. What's the music?
Just the Just
Anyone who cannot conceive how we evolved from inanimate objects has suffered an epic failure of imagination.
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Irval Firestar
For some reason this reminds me of algae life under a microscope. In another note though, that spinning glider.
Irval Firestar
For some reason this reminds me of algae life under a microscope. In another note, that spinning glider.
Samuel Vidal
The music : https://www.youtube.com/watch?v=wSKviIbd43w Musicshake - Slow electronica
rworldzcorp Rworldz enterprize
I need to know who did this song
songs name?
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