Code center > Bugs and fixes

Bugs in 2.42.8f

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Henk:
I have ties to nothing in 2.42.8f, see attached sims

EricL:
So, how does that old saying go?  It's not a bug, it's a feature!!!!!!!

Indeed, beleive it or not, this is actually a feature.  In recent buddy drops I added this thing I call 'Movemenct Vectors' designed to help you see what the bot (or a bunch of bots all at once) is actually doing to move itself.  What I do is display lines coming out of the edge of the bot for each of the four movement sysvars (.up, ,dn, .sx. .dx).  The length of the lines are proportional to the value the bot stored into the respective sysvar that cycle and surprise surprise, they look exactly like a tie to nowhere!  The line is the same color as the bot and there can be up to four of them at once, pointing in the four bot-relative movement directions, in the case where the bot stored values into all the four sysvars that cycle.

Note that if the bot stores a negative number into a movement sysvar, the line will point the other way.  You can tell, for example, the difference between a bot storing 10 into .up or one storing -10 into .dn by where the line starts.  The resulting movement of the bot will be the same in both cases, but in the first case the line will start at the forward edge of the bot and in the latter case, it will start from the back edge and go through the bot.

You can turn the 'feature' off via a menu item on the Robots menu.

Thanks for the bug report.  I do appreciate it.

Henk:
Hmmm, are you sure that's what this is? Those 'movement vectors' were awfully big.

It's a monster I tell you, a monster!    

So just to get things straight, this is a movement vector?

EricL:
Pretty sure.  I made them big so you can see them, I think 10x the sysvar value up to 100.  The bot is likely storing a large number into .up.   Turn them off and see if they go away.  You can also use the movement sysvar button on the bot console dialog to verify the bot behaviour and verify that the lines corrospond to what the bot is doing.

If people have ideas on how to improve the feature, happy to hear them.  My goal here is to provide more graphical visablity into bot behaviour, particularly behaviour of evolved bots with complex DNA, but everything like this I do can be turned off for those who don't like the way something looks or acts.

Numsgil:
A little arrow hat, like a >, would go a long way to telling people that they're vectors.

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