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Bug #1219

Loading quicksave of landed craft throws it into the air

Added by richard1 about 11 years ago. Updated over 8 years ago.

Status:
Closed
Severity:
Normal
Assignee:
-
Category:
Physics
Target version:
-
Start date:
08/20/2013
% Done:

100%

Version:
0.21.1
Platform:
Win32
Expansion:
Language:
English (US)
Mod Related:
No
Votes:
Arrow u r green
Arrow d r red

Description

I safely landed a craft on Duna (after a few attempts) using the heavy-duty landing gear.

Once landed and static (0.0m/s displayed surface velocity) I quicksaved.

Then I reloaded the quicksave.

My previously static, unmoving craft immediately twisted violently, threw itself into the air and was destroyed.
This now happens every single time I reload the quicksave.

quicksave.sfs (816 KB) quicksave.sfs This quicksave shows the issue richard1, 08/20/2013 01:47 AM

History

#1 Updated by richard1 about 11 years ago

To be specific, the craft is using the LT-1 landing struts mounted on the end of I beams.

#2 Updated by triffid_hunter about 11 years ago

this is probably related to the bug which causes solar panels to be destroyed when approaching a landed craft, ie loading the craft before terrain is fully loaded causes phantom forces

#3 Updated by blunckles about 11 years ago

I can confirm this behavior. Experienced the same behavior when using 0.21.1 with a craft on Mun that lad previously landed on the slope of a crater. After landing, performed some kethane extraction to top off tanks, then saved the game & exited. Upon restarting the game, loading the saved file, and resuming the flight, craft immediately jumps up about 5-10 meters, lands abnormally on the landing struts, twists off the downslope strut, twists clockwise & destroys the engines/etc.

Can provide save file if that would help in diagnosing problem.

Also - have experience in QA testing network security products & would be happy to render testing assistance on any patch provided.

BTW - thanks for building such a kick-ass game :) Many thanks for the HOURS of fun!

#4 Updated by sr about 11 years ago

Could you check to see if the craft is clipping the terrain when saved?

Edit: So is a part of the craft penetrating the terrain, when performing the quicksave? this could explain the forces exerted on the craft during loading and initializing of the universe.

#5 Updated by blunckles about 11 years ago

The craft does not appear to be clipping the terrain when saved. Also, the kethane drill (the only part that I could see penetrating the terrain) was not deployed prior to the save.

#6 Updated by TruePikachu almost 11 years ago

  • Status changed from New to Confirmed
  • % Done changed from 0 to 10

Just leaving this here, likely related to #1978. There is also a duplicate #2016, which confirms that the issue still stands in 0.23.

#7 Updated by Ted almost 11 years ago

  • Severity changed from High to Normal

Aye, this is most likely due to the ground contact error being significant enough to displace the craft.

#8 Updated by Squelch over 9 years ago

  • Platform Win32 added
  • Platform deleted (Windows)

#9 Updated by TriggerAu over 8 years ago

  • Status changed from Confirmed to Needs Clarification
  • % Done changed from 10 to 0

#10 Updated by TriggerAu over 8 years ago

  • Status changed from Needs Clarification to Closed
  • % Done changed from 0 to 100

Closing this report out for now. If you find it is still occuring in the latest version of KSP please open a new report (and this one can be linked to it.) For best results, the wiki contains really useful info for when creating a report http://bugs.kerbalspaceprogram.com/projects/ksp/wiki.

You can also ask questions about the bug cleanup in the forum here: http://forum.kerbalspaceprogram.com/index.php?/topic/143980-time-to-clean-up-the-bug-tracker/ and tag @TriggerAu to get my attention

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