View Issue Details
| ID | Project | Category | Date Submitted | Last Update | |
|---|---|---|---|---|---|
| 0024484 | AI War 2 | Crash/Exception | Feb 24, 2021 9:15 pm | Mar 2, 2021 11:13 am | |
| Reporter | Sigma7 | Assigned To | Chris_McElligottPark | ||
| Status | resolved | Resolution | fixed | ||
| Product Version | Beta 2.746 Release The Warden | ||||
| Fixed in Version | Beta 2.750 Bastions And Tuning | ||||
| Summary | 0024484: NRE in BuildShipsLookup | ||||
| Description | A campaign is throwing an exception based on some long range planning by the AI Warden fleet. 2/24/2021 8:08:02 PM 2.746 SINGLEP Start load save: G:/Games/SteamLibrary/steamapps/common/AI War 2/PlayerData/Save/Backdoor/bd 2021 02 18 3.save Source1: AnythingElse Source3: LoadingSaveGame 2/24/2021 8:08:03 PM 2.746 SINGLEP Recalculated Strengths For Loaded Galaxy Map in 21ms 2/24/2021 8:08:03 PM 2.746 SINGLEP Finish load save in 914.0ms 2/24/2021 8:37:19 PM 2.746 SINGLEP Reconquest Seeding for Das: guard post placer: EightSpreadOutGuardPosts scheduled: 8 actually seeded: 8 2/24/2021 8:42:03 PM 2.746 SINGLEP Reconquest Seeding for Crestholm: guard post placer: FourSpreadOutGuardPosts scheduled: 4 actually seeded: 4 2/24/2021 9:06:11 PM 2.746 SINGLEP Hit exception in BuildShipsLookup debugCode 410 exception System.NullReferenceException: Object reference not set to an instance of an object at Arcen.AIW2.External.Fireteam.BuildShipsLookup (System.Boolean includeShipsInTransit, Arcen.AIW2.Core.Planet destinationOrNull) [0x00168] in <8c9e2c0a1a7a422b9c459f79fe448814>:0 2/24/2021 9:06:11 PM 2.746 SINGLEP Unknown Exception in DoLongRangePlanning_OnBackgroundNonSimThread for faction AI Warden Fleet(Index 2), so will not run any more of those until a reload of the save. Check error log to see prior recorded exception. The attached saves, "bd nre.save" and "bd fatal.save" were made after the exception popped up. The autosave should be before the exception, but I'm unsure on how to reproduce it from the autosave. | ||||
| Tags | No tags attached. | ||||
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Suspected race condition between LRP and sim code, where the ship is being removed: for ( int i = 0; i < this.ships.Count; i++ ) { debugCode = 100; GameEntity_Squad entity = this.ships[i]; if ( entity == null || entity.Planet == null ) continue; .... debugCode = 410; shipsByPlanet[entity.Planet].Add(entity); } } ..... catch (Exception e) It looks like we are hitting a NRE when checking entity.Planet. My first thought would be to cache the Planet at the beginning of the loop |
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Thanks! Handled this a slightly different way, but we can adjust if needed based on future testing: * Fireteams now use ConcurrentDictionary instead of ArcenSparseLookup, as apparently these could get a bit wires-crossed with multiple threads, and this may be slightly more efficient in general, anyway. ** This prevents certain nullref exceptions that could happen in BuildShipsLookup, and probably also a few other things. ** It's worth noting that it turns out that the foreach statement with a ConcurrentDictionary is fully thread-safe, and in general supports continuing iteration over the directionary while things are added or removed, which is a strange and wonderful superpower of this. * Fixed a bug with some fireteam tracing always being on, and slow things down because of that, because of a tracing flag having a typo causing it not to be used. This may have only affected the scourge, not sure. |
| Date Modified | Username | Field | Change |
|---|---|---|---|
| Feb 24, 2021 9:15 pm | Sigma7 | New Issue | |
| Feb 24, 2021 9:15 pm | Sigma7 | File Added: Backdoor - nre warden.zip | |
| Feb 24, 2021 10:36 pm | BadgerBadger | Note Added: 0060648 | |
| Feb 24, 2021 11:40 pm | Sigma7 | Summary | NRE in BuildShipsLoopup => NRE in BuildShipsLookup |
| Feb 24, 2021 11:40 pm | Sigma7 | Description Updated | |
| Mar 2, 2021 11:13 am | Chris_McElligottPark | Assigned To | => Chris_McElligottPark |
| Mar 2, 2021 11:13 am | Chris_McElligottPark | Status | new => resolved |
| Mar 2, 2021 11:13 am | Chris_McElligottPark | Resolution | open => fixed |
| Mar 2, 2021 11:13 am | Chris_McElligottPark | Fixed in Version | => Beta 2.750 Bastions And Tuning |
| Mar 2, 2021 11:13 am | Chris_McElligottPark | Note Added: 0060683 |
