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2.42.4 Now Available

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EricL:
2.42.4 is now available.  The list of changes from 2.42.3b can be found here.

Of particular interest in this release is multibot tie behaviour.  Ties now stiffen after 20 cycles (they didn't in previous versions of 2.4) and multibot tie commands such as fixang and fixlen should work correctly.  Multibots such as inchworm appear to work as designed in this version though there likely remain some differences in behaviour due to the different underlying physics of the two versions.  For example, bots which are sensitvie to specific tie stiffness nuances or the specific force exerted on a bot due to fixing a tie length or angle may appear to behave differently in this version and 2.37.6 even though the underlying sysvars are working correctly.  Please bring specific examples of behavioural differences between the two versions to my attention.  In particular, the Hooke forces for stiff and elastic ties will likely still require tweaking.

Note that the stifftie sysvar has not yet been implemented in this release.

Also in this version is a "fix" for the saved sim file corruption problem experienced when long running evo sims are saved with bots that have more than 2^15 bytes worth of mutation details.  This version should be able to read those sim files and save new ones with the potential for essentially infinite mutation details in a (mostly) backward compatabile manner without causing corruption.  See the above linked topic for details.

This version also includes several bug fixes (including fixes for the impossibly long tie bug, the kinetic friction bug and the problem where trefvars only lasted a cycle).  There is also some UI cleanup and a couple of new knobs to turn such as the coeffecient of elasticity for collisions.  Gene activations have also been added back into the robot console command window.  Lastly, this version now also provides a new menu item which allows you to save sim files without mutation details, greatly reducing their size for uploading.

Enjoy.  As always, please make me aware of any issues.

Direct download link

Griz:
thanks Eric ...
for all the work you've done and continue to do.

this is much better than writing a novel don't you think.

Numsgil:
Awesome, I'll check it out after work today.

Elite:
Wonderful

That new 'collision elasticity' control you added is great  

And it loads the ex nihlo sim that I lost! Yay!

 

EricL:

--- Quote from: Griz ---thanks Eric ...
for all the work you've done and continue to do.

this is much better than writing a novel don't you think.
--- End quote ---
Thanks.  I think we are getting there.

Darwinbots and the novel have a lot in common actually.  The book is about a really nasty software virus (turns out it's an escaped NSA cyber weapon) which ultimatly starts evolving after infecting the server farm and incorporating the breeding engine of a small startup which is attempting to use evolutionary techniques to breed software.  Sound familiar?  Actually, it may end up being two books with the first being about the virus, the havoc it causes, the discovery it was built by our government, the attempts to kill it before it's timebomb goes off, etc.  and the second about it evolving and what that means as far as humans having to deal with intelligent cyberlife.  I'm 60k words down the road and only now is all hell about to break loose  (and I have a lot of character development and back story yet to add in early chapters) and my protagonists still don't have a clue, so it's looking like it will end up as 2 books.  One of my main protagonists is very involved in a hobby/game much like DB (which I first based on Microsoft's Terrarium) and the game itself appears in the plot from time to time.   I think I may add some additional characters from the game comunity as well and make the ALife hobbiest community more central than it is....

So you see, this is all just "research" and - fair warning - you are all fair game for use as potential characters...    

In a few months, I'll post some chapters and start asking for reviewers...

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