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Bug #13744

Abrupt Terrain Steps around Space Center, Tire Hazard and Visually Unappealing

Added by JPLRepo about 2 months ago. Updated about 2 months ago.

Status:
Confirmed
Priority:
Low
Assignee:
-
Category:
-
Target version:
-
Start date:
10/01/2016
% Done:

10%

Version:
Platform:
Linux

Description

First became a noticeable problem at 0 degrees 2' 59" N by 74 degrees 45' 55" W while playing version 1.2.0.1548. It appears the terrain is rendered in large square blocks. They are not aligned quite right resulting it steps in terrain which creates tire hazards (1548c) and visually unappealing. When first noticed step was in opposite direction and about twice as high (no picture).

Went to same location playing KSP 1.1.3. Step does not exist ( 1.1.3a and 1.1.3b), nor do I see any lines in terrain differentiating between terrain blocks. I have seen terrain lines in the past at both North and South poles but no steps in terrain. In this version I do have mods installed but nothing that should effect terrain or textures. I found these terrain steps in 1.2.0.1479, the first prerelease I downloaded.

I then installed version 1.2.0.1553 with saved game from 1.2.0.1548. The terrain step remained (1553c). Restarted game terrain step still there but different (1533d). Every time I restart terrain step is there but often, not always, changes both vertically and horizontally. On all three versions of KSP I kept my graphics setting consistent (Graphics Settings1.2.01548).

Granted the Tanker I am testing is heavy, 4.743 tons per tire, but tires are damaged at snails pace of 0.1m/s when step is relatively small.

In persistent.sfs goto flag "Terrain Step"

System:
KSP 1.2-01553
Ubuntu 16.04 LTS
Intel® Core™ i7-4790K CPU @ 4.00GHz × 8
GeForce GTX 970/PCIe/SSE2
OS type 64-bit
Memory 15.6 GiB

1548c.png View (891 KB) Ulrick_Zebulon, 10/01/2016 12:22 PM

1.1.3a.png View (1.28 MB) Ulrick_Zebulon, 10/01/2016 12:26 PM

1.1.3b.png View (1.21 MB) Ulrick_Zebulon, 10/01/2016 12:26 PM

1553c.png View (893 KB) Ulrick_Zebulon, 10/01/2016 12:32 PM

1553d.png View (810 KB) Ulrick_Zebulon, 10/01/2016 12:34 PM

Graphics Settings1.2.01548.png View (193 KB) Ulrick_Zebulon, 10/01/2016 12:38 PM

persistent.sfs (991 KB) Ulrick_Zebulon, 10/01/2016 12:56 PM

rover-KSCseams0.sfs - rover parked on top of a seam directly west of KSC runway (211 KB) swjr-swis, 02/05/2017 07:23 PM

rover-KSCseams1.sfs - southwest corner of the 'tile' formed by this seam (211 KB) swjr-swis, 02/05/2017 07:23 PM

rover-KSCseams2.sfs - southeast corner of the 'tile' of this seam (211 KB) swjr-swis, 02/05/2017 07:23 PM

rover-KSCseams3.sfs - rover parked at the northeast corner of a seam-tile north of the KSC runway (211 KB) swjr-swis, 02/05/2017 07:23 PM

rover-KSCseams1.png View - southwest corner of the 'tile' formed by this seam (2.47 MB) swjr-swis, 02/05/2017 07:30 PM

rover-KSCseams2.png View - southeast corner of the 'tile' of this seam (2.66 MB) swjr-swis, 02/05/2017 07:30 PM

rover-KSCseams3.png View - north of the KSC runway (2.53 MB) swjr-swis, 02/05/2017 07:30 PM

seam-spotting-pattern1.png View - light intermittent line pattern to spot seams from afar (2.04 MB) swjr-swis, 02/05/2017 07:31 PM

seam-spotting-pattern2.png View - light intermittent line pattern to spot seams from afar (2.07 MB) swjr-swis, 02/05/2017 07:31 PM

rover-seamonthebeach.sfs - seam following the slope of the terrain down to the beach (211 KB) swjr-swis, 02/05/2017 07:55 PM

rover-seams-underwater.sfs - crosspoint of four seams on a sea floor slope (211 KB) swjr-swis, 02/05/2017 07:56 PM

rover-seamsonthebeach.png View - seam on the beach (2.51 MB) swjr-swis, 02/05/2017 07:57 PM

rover-seams-underwater.png View - seam under water (2.62 MB) swjr-swis, 02/05/2017 07:57 PM

rover-seamsonthehills2.sfs - crossing of seams in the hills west of KSC (238 KB) swjr-swis, 02/05/2017 09:42 PM

rover-seamsonthehills2.png View - crossing of seams in the hills west of KSC (2.36 MB) swjr-swis, 02/05/2017 09:43 PM

rover-seamsonthehills2-wheelkaputt.png View - 10m/s over the hills2 seam caused the wheel to break (2.27 MB) swjr-swis, 02/05/2017 10:00 PM

rover-seamsinthemountains1.png View - Seam crossing on a mountain slope (2.3 MB) swjr-swis, 02/06/2017 04:28 AM

rover-seamsinthemountains1.sfs - Seam crossing on a mountain slope (238 KB) swjr-swis, 02/06/2017 04:28 AM

Terrain_Seams_Around_KSC_and_on_Duna.sfs (239 KB) klgraham1013, 02/06/2017 05:54 PM

DunaSeam-NS-EW_Conjunction.sfs (1.03 MB) KroShan, 02/07/2017 01:16 PM

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History

#2 Updated by JPLRepo about 2 months ago

Copied from PreRelease as this is still a known issue.

#3 Updated by swjr-swis about 2 months ago

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

KSP 1.2.2.1622 x64 on Win x64.

See also #13190, reported 3 months ago on 1.2.1 and still awaiting any response. Report included exact coordinates, screenshots and a savefile with a craft on the location. (the last comment added is unrelated to the problem in the report, ignore).

See also #13213 and #13252 by others, although neither of those include savefiles.

#4 Updated by swjr-swis about 2 months ago

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KSP 1.2.2.1622 x64 on Win x64.

Attaching some screenshots and save files with a rover parked next to seams in the immediate vicinity of the KSC.

Also, as a guide of how to spot these seams from afar on mostly flat terrain: watch for light intermittent straight lines on the ground close towards the horizon. They are easier to spot when orientated 5-10 degrees away from one of the cardinal directions (NESW) and while moving slowly, because the intermittent pattern of the lines will start moving.

#5 Updated by swjr-swis about 2 months ago

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KSP 1.2.2.1622 x64 on Win x64.

Attaching two more save files + screenshots, showing seams on sloping terrain (edge of the beach) and on the sea bed. So it's not just on flat terrain.

#6 Updated by swjr-swis about 2 months ago

26980

KSP 1.2.2.1622 x64 on Win x64.

Save file + screenshot of seams in the hills west of KSC.

#7 Updated by swjr-swis about 2 months ago

26981

KSP 1.2.2.1622 x64 on Win x64.

Even a small seam can cause wheels to rupture at relatively slow speeds. This one (left front wheel) happened while rolling unpowered at around 10m/s over the seam.

#8 Updated by swjr-swis about 2 months ago

26982

KSP 1.2.2.1622 x64 on Win x64.

One more set, this time in the mountains, on a steep slope, about 45km west of KSC.

A bit puzzled now why you needed help/saves to find them, since it appears obvious that they exist pretty much all over the place in a grid of squares with sides of roughly 1.1km (grid size estimated by following one seam due west and checking distance to targeted launch gantry left behind at the runway every time I drove over a seam crossing).

#9 Updated by klgraham1013 about 2 months ago

Terrain seams around KSC and on Duna with a random Kerbal standing next to them.

#10 Updated by KroShan about 2 months ago

Seam conjunction on Duna. One Northbound the other Eastbound.
Flag 049 at 5°41'N; 110°44'E
Flag 050 at 8°30'N; 110°44'E (Conjunction)

@swjr-swis yes you are right. Though it seems they are trapezoid. In the N-S distance is 1175m and the (northern) E-W distance is 1102m.
http://imgur.com/TW7tjHf

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