5 ms·

Particle Life

57 points by davidfoster 7y ago

svnpenn 7y ago
Full screen seems to be glitchy - particles dont go all the way to the bottom
- bayindirh 7y ago
  Looks like it gets the window size at the beginning and locks the canvas size to keep universe size constant, not to affect the simulation. Kinda clever if you ask me.
rouli 7y ago
wonderful! Coincidently, I read today a paper [1], which has a nice video demo here [2] describing a very similar system but with only one type of cells and a simple rule. Surprisingly enough, particles form cell type structure and seem to "reproduce". [1] http://www.nature.com/articles/srep37969 http://www.nature.com/articles/srep37969 [2] https://www.youtube.com/watch?v=makaJpLvbow https://www.youtube.com/watch?v=makaJpLvbow
rtkwe 7y ago
Link to the github repo: https://github.com/fnky/particle-life https://github.com/fnky/particle-life Couldn't find that in the actual page anywhere.
crimsonalucard 7y ago
How does this explain entropy? How is it increasing in this system? Are the complex/organized/cell-like structures supposed to be a higher entropy configuration? edit: I played with the parameters with "chaos" as the template. There's a parameter called "friction." I believe anything with a non-zero value here will cause energy to dissipate away from the system. If you set that friction value to zero, the system is closed and entropy goes up and stays up. In this state no complex structures form. However when you let energy dissipate out of the system via friction you start to see the cells, which is in line to the theory on how life can form despite rising entropy.
- heavenlyblue 7y ago
  >> How does this explain entropy? Does it have to explain entropy?
  - crimsonalucard 7y ago
    No it doesn't. I'm just questioning it. Initially it seemed to me as if the system was closed and thus entropy would go up. However entropy was not actually going up while observing the simulation which violated my notions of the nature of entropy and life. It formed a contradiction in my mind and that was what I was questioning. However the "friction" value made everything make sense. The system is not closed.

Particle Life

57 points by davidfoster 7y ago

svnpenn 7y ago

Full screen seems to be glitchy - particles dont go all the way to the bottom

bayindirh 7y ago
Looks like it gets the window size at the beginning and locks the canvas size to keep universe size constant, not to affect the simulation. Kinda clever if you ask me.

rouli 7y ago

wonderful! Coincidently, I read today a paper [1], which has a nice video demo here [2] describing a very similar system but with only one type of cells and a simple rule. Surprisingly enough, particles form cell type structure and seem to "reproduce". [1] http://www.nature.com/articles/srep37969 http://www.nature.com/articles/srep37969 [2] https://www.youtube.com/watch?v=makaJpLvbow https://www.youtube.com/watch?v=makaJpLvbow

rtkwe 7y ago

Link to the github repo: https://github.com/fnky/particle-life https://github.com/fnky/particle-life Couldn't find that in the actual page anywhere.

crimsonalucard 7y ago

How does this explain entropy? How is it increasing in this system? Are the complex/organized/cell-like structures supposed to be a higher entropy configuration? edit: I played with the parameters with "chaos" as the template. There's a parameter called "friction." I believe anything with a non-zero value here will cause energy to dissipate away from the system. If you set that friction value to zero, the system is closed and entropy goes up and stays up. In this state no complex structures form. However when you let energy dissipate out of the system via friction you start to see the cells, which is in line to the theory on how life can form despite rising entropy.

heavenlyblue 7y ago
>> How does this explain entropy? Does it have to explain entropy?
- crimsonalucard 7y ago
  No it doesn't. I'm just questioning it. Initially it seemed to me as if the system was closed and thus entropy would go up. However entropy was not actually going up while observing the simulation which violated my notions of the nature of entropy and life. It formed a contradiction in my mind and that was what I was questioning. However the "friction" value made everything make sense. The system is not closed.