ModernUO/Projects/UOContent/Engines/ConPVP
Kamron Batman ee2cd1d18d
feat: Adds new decay system and SkipSerialization (#2311)
## Summary

- Replaces scan-based decay checking during world saves with an event-driven timer wheel scheduler
- Removes virtual property checks from serialization hot path, achieving 6-8x faster world saves

## Changes

### DecayScheduler (new):
- Timer wheel with 12 HashSet buckets (5-min intervals) + PriorityQueue for active processing
- O(1) register/unregister vs O(n) scan of all items
- Auto start/stop when items exist/empty
- Configurable tick interval with jitter to prevent system synchronization

### Item.cs:
- Added ScheduledDecayTime computed property
- Added UpdateDecayRegistration() called from SetLastMoved(), property setters, AddItem()/RemoveItem()
- Hooks in Visible, Movable, Spawner setters and Delete()

### World.cs:
- Removed _decayQueue, EnqueueForDecay(), ProcessDecay()
- ItemPersistence.Serialize() now tight loop without virtual calls

## Performance

| Metric        | Before     | After     | Improvement |
|---------------|------------|-----------|-------------|
| Items (230K)  | 245K ticks | 34K ticks | 8x faster   |
| Mobiles (43K) | 56K ticks  | 6K ticks  | 9x faster   |
| Total         | 302K ticks | 40K ticks | 7.5x faster |

## Configuration

decay.maxItemsPerTick = 250       # Items processed per tick
decay.tickInterval = 256ms        # Base processing interval
decay.bucketInterval = 5min       # Timer wheel bucket size
decay.jitterMaxMs = 25            # ±25ms tick jitter
2026-01-08 11:43:51 -08:00
..
Games feat: Adds new decay system and SkipSerialization (#2311) 2026-01-08 11:43:51 -08:00
Gumps feat: Changes Spawner HomeRange to SpawnBounds (#2290) 2025-12-26 18:07:26 -08:00
AcceptDuelGump.cs fix: Fix NetStateGumps and other Gumps cleanup (#1919) 2024-08-10 09:57:28 -07:00
Arena.cs fix: Fixes region priority and resolution. (#1254) 2022-11-21 10:38:20 -08:00
DuelContext.cs fix: Fixes adding items with ambiguous type lookup (#2307) 2026-01-06 21:21:29 -08:00
DuelTeleporterAddon.cs Fixes brace style (#248) 2020-09-13 21:49:46 -07:00
Ladder.cs chore: Cleans up pattern checks. (#892) 2021-12-24 15:53:59 -08:00
Participant.cs fix: Fixes crafter deserialize, cleans up bandages, and codegens misc items (#1350) 2023-02-25 00:54:12 -08:00
Preferences.cs feat: Moves gumps out of the core (#1916) 2024-08-09 19:07:32 -07:00
Ruleset.cs C# 9 Cleanup (#325) 2020-11-27 00:29:21 -08:00
RulesetLayout.cs C# 9 Cleanup (#325) 2020-11-27 00:29:21 -08:00
SafeZone.cs fix: Fixes region priority and resolution. (#1254) 2022-11-21 10:38:20 -08:00
Tournament.cs fix: Fixes crafter deserialize, cleans up bandages, and codegens misc items (#1350) 2023-02-25 00:54:12 -08:00
TournamentBracketItem.cs feat: Moves gumps out of the core (#1916) 2024-08-09 19:07:32 -07:00
TournamentController.cs feat: Moves gumps out of the core (#1916) 2024-08-09 19:07:32 -07:00
TournamentPyramid.cs chore: Cleans up pattern checks. (#892) 2021-12-24 15:53:59 -08:00
TournamentRegistrar.cs fix: Fixes crafter deserialize, cleans up bandages, and codegens misc items (#1350) 2023-02-25 00:54:12 -08:00
TournamentSignupItem.cs feat: Moves gumps out of the core (#1916) 2024-08-09 19:07:32 -07:00
TourneyParticipant.cs fix: Update LabelTo, SendMessage, etc to Interpolated Strings (#1283) 2022-11-28 19:58:12 -08:00
Trophy.cs fix: Codegens faction items and questers (#1764) 2024-05-08 17:16:36 -07:00