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Bug #28075

New Docking Ports are causing drift similar to robotics.

Added by Anth12 over 3 years ago. Updated about 3 years ago.

Status:
Ready to Test
Severity:
Low
Assignee:
-
Category:
Parts
Target version:
1.12.3
Start date:
06/27/2021
% Done:

80%

Version:
1.12.2
Platform:
Windows
Expansion:
Core Game
Language:
English (US)
Mod Related:
No
Votes:
Arrow u r green
Arrow d r red

Description

KSP 1.12.0 + BG + MH

I created a mod early this year that displays orgPos and orgRot and some other part coordinates for investigation of robotic drift

Nonrobotic Parts
In 1.11.2 a craft with no robotics doesn't change their orgPos/orgRot.
And on timewarp the craft will snap back into its original positions

Robotic Parts
Robotics (and their internal parts) and what's connected to their branch does change their orgPos/orgRot on saving the game.
And on timewarp the craft's robotic parts and what's connected will not snap back into their original positions. not good.

New Rotating Docking Ports
One docking port causes the same symptoms as robotic drift.
I added a docking port to a craft using eva construction and the orgPos and orgRot of parts on the craft started changing
Hitting F5 (Quicksave)

I made the following video:
https://youtu.be/nvst0OWAi0s

When you see orgPos and orgRot changing in the video this is due to the game saving the stressed positions of the parts which means now that they are permanently twisted
I used physwarp to make it worse but without physwarp its only a matter of time before the same result will happen.

ShowPosRot.dll is the mod.
It doesn't work for all parts, and sometimes stops working. Its my first mod of my lifetime. Please don't judge ;)

ShowPosRot.dll (8 KB) ShowPosRot.dll Anth12, 06/27/2021 07:37 AM
Drift Test Craft.craft (55 KB) Drift Test Craft.craft Anth12, 06/27/2021 08:08 AM
screenshot0.png (2.14 MB) screenshot0.png Anth12, 06/27/2021 08:34 AM
57834

History

#1 Updated by Anth12 over 3 years ago

To eliminate the drift remove the docking port.

#2 Updated by Anth12 over 3 years ago

57834

GOG KSP 1.12.0 No DLCs

I bought KSP from GOG a while back without DLCs for bug testing that might need to eliminate the DLCs

Still happening

#3 Updated by dok_377 over 3 years ago

JPLRepo on the forum prior to the release outright said that these parts are not robotic and will not drift. And then we have this. Sometimes you just can't win.

#4 Updated by MarlusKeep over 3 years ago

OMG this is terribly frustrating. Since a lot of big ships use docking ports to connect themselves. Its impossible to make them now cause they start to wobble a lot.

I'm really disappointed because one of the reasons I play this game is to build big stations and connect them with docking ports on multiple launches. Looks like i need to go back to 1.11.

Is there a way to urgently show this directly to the devs?

#5 Updated by Anth12 over 3 years ago

Don't worry I have already done so MarlusKeep

#6 Updated by Rakete over 3 years ago

Same for me... this is a big bug. Needs asap fixing.

#7 Updated by Mariana_A about 3 years ago

  • Status changed from New to Confirmed
  • % Done changed from 0 to 10
  • Version changed from 1.12.0 to 1.12.2

#8 Updated by Mariana_A about 3 years ago

  • Status changed from Confirmed to Being Worked On
  • % Done changed from 10 to 30

#9 Updated by Mariana_A about 3 years ago

  • Status changed from Being Worked On to Ready to Test
  • Target version set to 1.12.3
  • % Done changed from 30 to 80

#10 Updated by RyanRising about 3 years ago

Despite the 1.12.3 update claiming to fix this if parts are locked before saving, the same symptoms appear in that version, though only if docking ports (or robotics) are toggled to unlocked at any point after loading.

#11 Updated by Anth12 about 3 years ago

From my testing this is fixed.

1.12.0 to 1.12.2 docking port drift existed

1.12.3 docking port drift is gone (as long as the docking ports stay locked)

Resolved to an acceptable level in my opinion

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