Starmade | Chunks Vanishing (permanently)
Open, Pre-Release Quality AssurancePublic

Description

Chunks not saving properly on ships, resulting in repeated iterations of ships with huge chunks missing. Admin loading a new copy still has same chunks missing every time. The original, never deleted, has the chunks missing now. Creating a new world and admin loading still has same chunks missing. Closing and restarting client does not help. Dropping new cores and re-starting project does not help - new cores eventually develop the same missing areas if I repeat the build from scratch.

This bug does not occur if the buid-helper shape used for the main hull is directly centered on the ship's core. It only seems to happen if I offset a large hull.

Details

Task Type
Bug
Testing Results
Affected Gamemode(s)
Singleplayer
Reproducible
Yes
Last tested (version)
201.105
Category
none/unspecified
First occurrence (version)
unknown
Hardware/Software/System
OS-Specific
No
Hardware-Specific
No
Video Card Vendor
uncertain
Steps to reproduce

Create a new world and spawn in.

Drop a core, enter, move away from stick shop, and get all Advanced Build Mode.

Place a row of 50 blocks negative on the Z-axis, and from the end of that, a column of 10 blocks negative on the Y-axis. Mark this a Point A1.

Set Build Helper to create an ellipsoid of dimensions x=20, y=20, z=95, restrict building to helper, and set position at Point A1.

Fill in the helper with grey advanced armor. Doesn't matter if you layer the armor either (i.e. also fill in helper ellipsoids at x=21, y=21, z=96 and x=22, y=22, z=97).

Save this entity as Test Chunkfail 1.

Leave core, and admin load a copy of the ship - chunks should already be missing. If not, reboot client and try again.

This is tested in 3 different SP worlds with at least 3 fresh cores in each world; one time I could not get the chunks to fail, but after testing another new core for a while and deleting a few things, the previous one finally decided to fail as well for no apparent reason.

Serverconfig (server.cfg)
 <replace this block with the file content, 
but do not remove the first and last line. 
Before using the paste function, mark the area from the 
opening angle bracket to the closing angle bracket>
Clientconfig (settings.cfg)
 <replace this block with the file content, 
but do not remove the first and last line. 
Before using the paste function, mark the area from the 
opening angle bracket to the closing angle bracket>
MacThule created this task.Jul 7 2018, 12:09 AM
lancake claimed this task.Jul 7 2018, 2:44 PM
lancake moved this task from New / Unconfirmed to Feedback on the Issue Navigation board.
lancake added a subscriber: lancake.

-feedback-

I've encountered reverted chunks in some of the blueprints I did, that seemed to have fixed itself after using Clear client cache in the main menu - tools.
It's still an issue but I can reproduce it somewhat which is good.

In your description, you mention it also affects the original ship. Do the chunks of the actual original ship in your world also revert after leaving/joining your SP world again? Does it happen at a different time or is it something that seems to be fine for many joins/leaves and suddenly chunks are missing, not only reverted to a previous stage but completely gone?

In your steps to reproduce, it is only about the blueprints

lancake shifted this object from the S1 Public space to the S3 Starmade space.Jul 7 2018, 2:44 PM
lancake changed the task status from "Open" to "Feedback".
lancake raised the priority of this task from "Normal" to "Pre-Release Quality Assurance".
lancake changed the visibility from "Custom Policy" to "Public (No Login Required)".
lancake changed the edit policy from "Task Author" to "Starmade (Project)".
Restricted Application added a project: Waiting on Author. · View Herald TranscriptJul 7 2018, 2:44 PM

When first discovered, I rejoined my SPG after some days, and found chunks missing from the original, but didn't want to try to debug so I attempted an admin load to just get a clean copy, but that came up with identical missing chunks. So I assumed I'd made some catastrophic symmetry error before saving and exiting my last session, went ahead and rebuilt the ship (patched the missing chunks), thoroughly looked over my ship for quality in build mode and 3rd-person and it was perfect. So I quit and immediately rejoined to make sure it was still good but it wasn't. I found similar (unsure if identical) missing chunks on my rebuild and admin loads all had copies of the error, so this time I knew it was not my mistake and started trying to pin it down.

I next assumed that the core was corrupt (I've encountered a kind of issue with simple drone miners not working in the past - I did extensive R&D with them at one point - that was often cured (across worlds) by spawning a brand new core and building the drone again from scratch. The new copy would often work indefinitely, despite being an exact copy of a drone that had previously worked fine, then stopped working completely and permanently (across worlds)). So I tried it again with a new core and everything was fine for a while, but I may not even have logged out (unsure) but went on to do some weapon tests on the shell, deleted it, and the admin load had the error.

To eliminate the possibility of the world being corrupt as well I created a new world, spawned in, and started rebuilding. I wanted to get an idea of if a specific system might be causing the issue, so I started out to save it at every stage and re-join. It ended up happening with my first save-check, and all I'd added was the fill-in of the build-helper ellipsoid. In this case - new world, very first thing spawned - I definitely quit to desktop, re-joined, and immediately the ellipse I'd filled had these missing chunks. All admin loads also had them. It didn't make sense, because I had been using build-helper ellipsoids a lot recently with no problem.

I tried again immediately with a new core. Just tried it real fast using my core as the point to which I set the build-helper. Filled the ellipsoid and save, quit to desktop and rejoined. No problem! Admin loads were clean. Quit to desktop again and restarted computer - the original of this one was still fine and admin loads were fine.

Then I tried it again using an offset point to center the ellipsoid. On quit to desktop and rejoin this new original iteration had those similar missing chunks and all admin loads were similarly corrupt.

So it's not a one-off random entity core corruption, it's not a corrupt world, it's not the build-helper because the exact same hull stays good when it isn't off-centered from the core... It has been very predictably reproducible for me with this specific shape and core offset. I have yet to test other large shapes or offsets, but will advise if I do.

My best guess is that it's something to do with the way entities now re-center their HUD icon (or some branch of the object that GUI function is calling to determine where the icon should go) based on mass. Something in that region seems to be at fault, anyway, but I haven't studied the details of other similar incidents from other players, I've only heard that they happen sometimes, so I don't have full context.

Restricted Application edited projects, added Customer responded; removed Waiting on Author. · View Herald TranscriptJul 9 2018, 9:29 AM
Restricted Application changed the task status from "Feedback" to "Open". · View Herald Transcript

Ok... this is way more extensive than I suspected. I ran some more tests with just straight grey standard on fresh cores and the results are not good.

Testing cubes and sheets, pretty much every large shape (at least one dimension over 100m) immediately comes back with missing chunks if saved and admin loaded.

Loaded a 150m light frigate from a month ago and resaved it under a new name - no problem, no missing chunks, but recreating a roughly similar shape from scratch results in missing chunks on admin load, even if smaller.

Worse (or maybe better) I used symmetry to place 4 identical 50x50x50 cubes of grey basic on nothing but a core. Tested it and the admin reload came back with bad chunks. Worse though, without leaving the original core I hit UNDO, removing the 4 big cubes, and attempted to move. Ship's general stats says it has one block, but it moves around wildly, has 660K shields, and 132K reactor HP in the GUI although the ship stats in build mode say no power, no shields, 1 block. When I turn, the core flies about wildly at extremely high speed as if it was on the end of a very, very long stick (like hundreds of meters - possibly thousands). I feel like that actually confirms my earlier suspicion about it being a problem with something relating to the way the game's engine tags the center of mass on an entity, which is why I say it might be better since it seems to point to a similar area of code for the problem.

Restricted Application added a subscriber: AndyP. · View Herald TranscriptJul 10 2018, 12:52 AM

In the new release version (201.129 - didn't test it in the initial weapons release version) I am not able to reproduce this problem at all. It's gone and I can't recreate it. It went from every large shape being instantly corrupted, to no problems at all, so... will advise if I catch back up to it.

I came across this bug in a much different way, I imagine it could be related. However I could not replicate this again.
I created a drone miner, and set it to mine near an asteroid until I could upgrade it. I upgraded it after removing every block except the core. I rebuilt it using more blocks. I left the sector and asked the fleet into formation. As my drone reached the flagship the outer edge was the new ship, and the center was the old ship. Both were merged together.