A player in a private game I'm hosting is experiencing...

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48 days, 16 hours, 43 minutes ago

clausimu

A player in a private game I'm hosting is experiencing...

A player in a private game I'm hosting is experiencing glitches in the fuel consumption. Apparently the estimated fuel consumption can be off (+/-) by a few kt, resulting in stranded ships or ships with more fuel than anticipated? Anybody else experience this?

Details:

1. Experienced with and without plugins.
2. Verified by going back in history and comparing estimated fuel consumption with real fuel consumption.
3. Has happened only to LDSF so far.
4. Ship mission was "Explore" in all cases.

I can't check, because I'm also playing in the game. If the admins want to check, it's this game (http://planets.nu/#/sector/318627), and the player is playing the CoM.

48 days, 16 hours, 39 minutes ago

RE: A player in a private game I'm hosting is experiencing...

Have them send specific examples (turn # and ship id) to the contact link and we will take a look.

48 days, 15 hours, 55 minutes ago

RE: A player in a private game I'm hosting is experiencing...

Is it for a one-waypoint move, or for a multiple waypoints move? I think the multiple waypoints move can be off, overestimating the fuel consumption (maybe not correctly considering reduction of mass by fuel consumption of the first waypoints), but did not check this in detail yet myself.

47 days, 20 hours, 21 minutes ago

clausimu

RE: A player in a private game I'm hosting is experiencing...

@Big Beefer - thanks, I passed on the request.

@Zacha - good question, I don't know. But if you are right, I would have to argue that the formula used to predict fuel consumption over several turns is in need of an upgrade... :)

47 days, 19 hours, 46 minutes ago

RE: A player in a private game I'm hosting is experiencing...

There is a fairly long list of known errors in the fuel estimation process in the "old" client. It's likely that some of these errors have been transferred into the new client, but I haven't taken the time to check.

http://play.planets.nu/#/howtoplay/FuelEstimateErrors

I expect that what's being encountered is in there.

47 days, 10 hours, 11 minutes ago

clausimu

RE: A player in a private game I'm hosting is experiencing...

@Whisperer - wow, I wasn't aware of this list... Thanks for pointing this out.

47 days, 8 hours, 54 minutes ago

RE: A player in a private game I'm hosting is experiencing...

Personally, I would very much like it if fuel consuption over multiple turns were fixed so it would be accurate :)

I am not a programmer, but it seems like it would be relatively simple to do. Just subtract from the total mass of the ship the amount of fuel that would be consumed over each leg of the journey.

47 days, 5 hours, 18 minutes ago

RE: A player in a private game I'm hosting is experiencing...

I think it is when you round up and round down. Each change in fuel weight carries to the next turn.

Obviously all of us car drivers use the same method of fuel consumption?

We know we are travelling exactly the same distance at exactly the same speed and fuel ratio and put exactly the amount of fuel to get between gas / petrol stations with no fuel to spare?

And never get it wrong.

Travelling LY's in space should not make a difference?

47 days, 3 hours, 28 minutes ago

mcnimble

RE: A player in a private game I'm hosting is experiencing...

whoa. that list on Fuel Estimation Errors is... rather long...

You know, if you help getting steps into https://chmeee.org/#planets.nu/McNimblesToolkit/SimulatedHostRun ;)
I mean, alchemy is already in there. There's no chance fuel usage could 'forget' alchemy, 'coz it has already happened by the time the movement steps are executed.

43 days, 20 hours, 25 minutes ago

RE: A player in a private game I'm hosting is experiencing...

> it seems like it would be relatively simple to do

It seems like it, but to have this work properly, it would be necessary to know the end-turn locations precisely. This requires new code based on Big Beefer's change to display end-turn locations. Not an overwhelming task, but certainly not trivial.

43 days, 18 hours, 42 minutes ago

mcnimble

RE: A player in a private game I'm hosting is experiencing...

I'm not worried about the end-turn locations, as such (recent findings boosted confidence, mostly).
But I am worried about end-turn location when running out of fuel.

I *think* last time I had a problem with that, it was an LDSF (or maybe it was a Merlin) overshooting to make more sure it would run run out of fuel - and instead of running out of fuel at the expected place, it ran out of fuel a few LY earlier.

43 days, 18 hours, 26 minutes ago

RE: A player in a private game I'm hosting is experiencing...

@Mcnimble,

Sorry. I wasn't clear. The end-turn locations are needed to know the EXACT distance of each hop, which gives a more accurate fuel consumption. On a long run (several turns), this could have an impact on the fuel at the end of the trip, and could sometimes be the difference between getting to the planet and not getting there.

FYI, I believe found another bug in the fuel usage estimator (found this morning by code inspection, not yet tested in actual use). If you're towing a Neutronic Refinery with 800KT of fuel, 525KT of minerals and 525KT of supplies, the fuel usage estimator will use a mass that assumes the conversion happened, giving you a mass that's off by 525KT. That makes a significant difference in the fuel needed to tow.

35 days, 19 hours, 29 minutes ago

RE: A player in a private game I'm hosting is experiencing...

> FYI, I believe found another bug in the fuel usage estimator (found this morning by code inspection, not yet tested in actual use). If you're towing a Neutronic Refinery with 800KT of fuel, 525KT of minerals and 525KT of supplies, the fuel usage estimator will use a mass that assumes the conversion happened, giving you a mass that's off by 525KT. That makes a significant difference in the fuel needed to move or tow the Neutronic Refinery.

This bug has been verified by testing and added to the errors page :(

http://play.planets.nu/#/howtoplay/FuelEstimateErrors