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Reduce explosion airtight cache memory usage (#40912)

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* Reduce explosion airtight cache memory usage

This means you can happily add explosion prototypes again

New approach has the tolerance value data in a shared storage with reference counting.

* Oops fix index removal

* Remove debug code and fix merge conflicts

* Also address my other review

* Oh it's in two places lmao

---------

Co-authored-by: Princess Cheeseballs <66055347+Pronana@users.noreply.github.com>
This commit is contained in:
Pieter-Jan Briers
2026-04-04 16:54:51 +02:00
committed by BarryNorfolk
co-authored by Princess Cheeseballs
parent 538a1b1839
commit 9dd9f5cd92
7 changed files with 282 additions and 82 deletions
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Content.Server/Explosion/EntitySystems/ExplosionSystem.TileFill.cs
+8 -11
View File
@@ -1,5 +1,6 @@
using System.Linq;
using System.Numerics;
using Content.Server.Explosion.Components;
using Content.Shared.Administration;
using Content.Shared.Explosion.Components;
using Robust.Shared.Map;
@@ -40,11 +41,7 @@ public sealed partial class ExplosionSystem
if (totalIntensity <= 0 || slope <= 0)
return null;
if (!_explosionTypes.TryGetValue(typeID, out var typeIndex))
{
Log.Error("Attempted to spawn explosion using a prototype that was not defined during initialization. Explosion prototype hot-reload is not currently supported.");
return null;
}
var typeIndex = _explosionTypes[typeID];
Vector2i initialTile;
EntityUid? epicentreGrid = null;
@@ -103,8 +100,7 @@ public sealed partial class ExplosionSystem
// set up the initial `gridData` instance
encounteredGrids.Add(epicentreGrid.Value);
if (!_airtightMap.TryGetValue(epicentreGrid.Value, out var airtightMap))
airtightMap = new();
var airtightMap = CompOrNull<ExplosionAirtightGridComponent>(epicentreGrid)?.Tiles ?? new();
var initialGridData = new ExplosionGridTileFlood(
(epicentreGrid.Value, Comp<MapGridComponent>(epicentreGrid.Value)),
@@ -115,7 +111,8 @@ public sealed partial class ExplosionSystem
_gridEdges[epicentreGrid.Value],
referenceGrid,
spaceMatrix,
spaceAngle);
spaceAngle,
this);
gridData[epicentreGrid.Value] = initialGridData;
@@ -192,8 +189,7 @@ public sealed partial class ExplosionSystem
// is this a new grid, for which we must create a new explosion data set
if (!gridData.TryGetValue(grid, out var data))
{
if (!_airtightMap.TryGetValue(grid, out var airtightMap))
airtightMap = new();
var airtightMap = CompOrNull<ExplosionAirtightGridComponent>(grid)?.Tiles ?? new();
data = new ExplosionGridTileFlood(
(grid, Comp<MapGridComponent>(grid)),
@@ -204,7 +200,8 @@ public sealed partial class ExplosionSystem
_gridEdges[grid],
referenceGrid,
spaceMatrix,
spaceAngle);
spaceAngle,
this);
gridData[grid] = data;
}