MechJeb Version

2.81

KSP Version

1.61

Description

I'm flying my ship, which is down to Zenon fuel and the Dawn engine. The MechJeb delta V window is showing that I've got nothing, but I clearly do.

Replication Case

KSP.log

This seems to happen with every Zenon craft I have, so replication shouldn't be a problem. I'm assuming you don't need logs, but if you do, let me know, and I'll grab some.

Just replying to say that I have seen your issue. I just need some quiet time to look into it...

Yeah I validated in the VAB and on the pad and with available eC, both on 1.5.x

I'm guessing I broke something in FuelFlowSimulation, but nothing seems obvious to me.

I think it is when you refactored this c3abe3a#diff-dc9768afe4b434960c417797ed67938aL655

I do not find the check for ResourceDensity > 0 anywhere. I guess the easiest fix would be to add any propellant with a density of 0 to the freeResources list ?

Fix pushed from my lunch break without a compiler around. Followed by a reminder that MJ is not coded in python ( 43fb12f )
Try dev build 867 ( https://ksp.sarbian.com/jenkins/job/MechJeb2-Dev/867/ )

right that just came up the other day on the RO discord that batteries have a wet mass and dry mass for the batteries, but zero resource density, or something crazy like that.

not working for me unless i did something equally dumb like forget to make install again... which it looks like i did not do...

i'll try to take a look at it later now that i have a good hint...

868 ought to fix this: https://ksp.sarbian.com/jenkins/job/MechJeb2-Dev/868/

@sarbian You want to do a patch release of the code as it is now? It seems like this fix for Xenon ∆v and the fix for launch-to-plane might warrant it. I've got some major changes that I'm thinking about shipping which would risk more destabilization and it feels like this might be a fairly happy point right now. No rush tho.

@lamont-granquist Yes, we should do a release.