Puddles & spreader refactor (#15191)
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metalgearsloth
GitHub
324
Content.Server/Spreader/SpreaderSystem.cs
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324
Content.Server/Spreader/SpreaderSystem.cs
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using Content.Server.Atmos.Components;
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using Content.Server.Atmos.EntitySystems;
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using Content.Server.NodeContainer;
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using Content.Server.NodeContainer.NodeGroups;
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using Content.Shared.Atmos;
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using Robust.Shared.Collections;
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using Robust.Shared.Map;
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using Robust.Shared.Map.Components;
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using Robust.Shared.Prototypes;
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using Robust.Shared.Random;
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using Robust.Shared.Timing;
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namespace Content.Server.Spreader;
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/// <summary>
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/// Handles generic spreading logic, where one anchored entity spreads to neighboring tiles.
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/// </summary>
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public sealed class SpreaderSystem : EntitySystem
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{
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[Dependency] private readonly IGameTiming _timing = default!;
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[Dependency] private readonly IMapManager _mapManager = default!;
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[Dependency] private readonly IPrototypeManager _prototype = default!;
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[Dependency] private readonly IRobustRandom _robustRandom = default!;
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private static readonly TimeSpan SpreadCooldown = TimeSpan.FromSeconds(1);
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private readonly List<string> _spreaderGroups = new();
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/// <inheritdoc/>
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public override void Initialize()
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{
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SubscribeLocalEvent<AirtightChanged>(OnAirtightChanged);
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SubscribeLocalEvent<GridInitializeEvent>(OnGridInit);
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SubscribeLocalEvent<SpreaderGridComponent, EntityUnpausedEvent>(OnGridUnpaused);
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SetupPrototypes();
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_prototype.PrototypesReloaded += OnPrototypeReload;
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}
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public override void Shutdown()
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{
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base.Shutdown();
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_prototype.PrototypesReloaded -= OnPrototypeReload;
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}
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private void OnPrototypeReload(PrototypesReloadedEventArgs obj)
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{
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if (!obj.ByType.ContainsKey(typeof(EdgeSpreaderPrototype)))
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return;
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SetupPrototypes();
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}
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private void SetupPrototypes()
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{
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_spreaderGroups.Clear();
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foreach (var id in _prototype.EnumeratePrototypes<EdgeSpreaderPrototype>())
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{
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_spreaderGroups.Add(id.ID);
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}
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}
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private void OnAirtightChanged(ref AirtightChanged ev)
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{
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var neighbors = GetNeighbors(ev.Entity, ev.Airtight);
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foreach (var neighbor in neighbors)
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{
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EnsureComp<EdgeSpreaderComponent>(neighbor);
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}
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}
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private void OnGridUnpaused(EntityUid uid, SpreaderGridComponent component, ref EntityUnpausedEvent args)
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{
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component.NextUpdate += args.PausedTime;
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}
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private void OnGridInit(GridInitializeEvent ev)
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{
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var comp = EnsureComp<SpreaderGridComponent>(ev.EntityUid);
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var nextUpdate = _timing.CurTime;
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// TODO: I believe we need grid mapinit events so we can set the time correctly only on mapinit
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// and not touch it on regular init.
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if (comp.NextUpdate < nextUpdate)
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comp.NextUpdate = nextUpdate;
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}
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/// <inheritdoc/>
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public override void Update(float frameTime)
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{
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var curTime = _timing.CurTime;
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// Check which grids are valid for spreading.
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var spreadable = new ValueList<EntityUid>();
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var spreadGrids = EntityQueryEnumerator<SpreaderGridComponent>();
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while (spreadGrids.MoveNext(out var uid, out var grid))
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{
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if (grid.NextUpdate > curTime)
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continue;
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spreadable.Add(uid);
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grid.NextUpdate += SpreadCooldown;
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}
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if (spreadable.Count == 0)
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return;
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var query = EntityQueryEnumerator<EdgeSpreaderComponent>();
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var nodeQuery = GetEntityQuery<NodeContainerComponent>();
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var xformQuery = GetEntityQuery<TransformComponent>();
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var gridQuery = GetEntityQuery<SpreaderGridComponent>();
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// Events and stuff
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var groupUpdates = new Dictionary<INodeGroup, int>();
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var spreaders = new List<(EntityUid Uid, EdgeSpreaderComponent Comp)>(Count<EdgeSpreaderComponent>());
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while (query.MoveNext(out var uid, out var comp))
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{
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spreaders.Add((uid, comp));
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}
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_robustRandom.Shuffle(spreaders);
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foreach (var (uid, comp) in spreaders)
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{
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if (!xformQuery.TryGetComponent(uid, out var xform) ||
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xform.GridUid == null ||
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!gridQuery.HasComponent(xform.GridUid.Value))
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{
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RemCompDeferred<EdgeSpreaderComponent>(uid);
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continue;
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}
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foreach (var sGroup in _spreaderGroups)
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{
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// Cleanup
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if (!nodeQuery.TryGetComponent(uid, out var nodeComponent))
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{
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RemCompDeferred<EdgeSpreaderComponent>(uid);
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continue;
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}
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if (!nodeComponent.TryGetNode<SpreaderNode>(sGroup, out var node))
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continue;
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// Not allowed this tick?
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if (node.NodeGroup == null ||
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!spreadable.Contains(xform.GridUid.Value))
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{
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continue;
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}
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// While we could check if it's an edge here the subscribing system may have its own definition
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// of an edge so we'll let them handle it.
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if (!groupUpdates.TryGetValue(node.NodeGroup, out var updates))
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{
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var spreadEv = new SpreadGroupUpdateRate()
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{
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Name = node.Name,
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};
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RaiseLocalEvent(ref spreadEv);
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updates = (int) (spreadEv.UpdatesPerSecond * SpreadCooldown / TimeSpan.FromSeconds(1));
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}
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if (updates <= 0)
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{
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continue;
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}
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Spread(uid, node, node.NodeGroup, ref updates);
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groupUpdates[node.NodeGroup] = updates;
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}
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}
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}
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private void Spread(EntityUid uid, SpreaderNode node, INodeGroup group, ref int updates)
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{
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GetNeighbors(uid, node.Name, out var freeTiles, out var occupiedTiles, out var neighbors);
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TryComp<MapGridComponent>(Transform(uid).GridUid, out var grid);
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var ev = new SpreadNeighborsEvent()
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{
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Grid = grid,
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NeighborFreeTiles = freeTiles,
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NeighborOccupiedTiles = occupiedTiles,
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Neighbors = neighbors,
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Updates = updates,
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};
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RaiseLocalEvent(uid, ref ev);
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updates = ev.Updates;
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}
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/// <summary>
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/// Gets the neighboring node data for the specified entity and the specified node group.
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/// </summary>
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public void GetNeighbors(EntityUid uid, string groupName, out ValueList<Vector2i> freeTiles, out ValueList<Vector2i> occupiedTiles, out ValueList<EntityUid> neighbors)
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{
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freeTiles = new ValueList<Vector2i>();
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occupiedTiles = new ValueList<Vector2i>();
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neighbors = new ValueList<EntityUid>();
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if (!EntityManager.TryGetComponent<TransformComponent>(uid, out var transform))
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return;
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if (!_mapManager.TryGetGrid(transform.GridUid, out var grid))
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return;
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var tile = grid.TileIndicesFor(transform.Coordinates);
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var nodeQuery = GetEntityQuery<NodeContainerComponent>();
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var airtightQuery = GetEntityQuery<AirtightComponent>();
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for (var i = 0; i < 4; i++)
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{
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var direction = (Direction) (i * 2);
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var neighborPos = SharedMapSystem.GetDirection(tile, direction);
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if (!grid.TryGetTileRef(neighborPos, out var tileRef) || tileRef.Tile.IsEmpty)
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continue;
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var directionEnumerator =
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grid.GetAnchoredEntitiesEnumerator(neighborPos);
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var occupied = false;
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while (directionEnumerator.MoveNext(out var ent))
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{
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if (airtightQuery.TryGetComponent(ent, out var airtight) && airtight.AirBlocked)
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{
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// Check if air direction matters.
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var blocked = false;
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foreach (var value in new[] { AtmosDirection.North, AtmosDirection.East})
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{
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if ((value & airtight.AirBlockedDirection) == 0x0)
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continue;
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var airDirection = value.ToDirection();
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var oppositeDirection = value.ToDirection();
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if (direction != airDirection && direction != oppositeDirection)
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continue;
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blocked = true;
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break;
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}
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if (!blocked)
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continue;
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occupied = true;
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break;
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}
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}
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if (occupied)
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continue;
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var oldCount = occupiedTiles.Count;
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directionEnumerator =
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grid.GetAnchoredEntitiesEnumerator(neighborPos);
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while (directionEnumerator.MoveNext(out var ent))
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{
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if (!nodeQuery.TryGetComponent(ent, out var nodeContainer))
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continue;
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if (!nodeContainer.Nodes.ContainsKey(groupName))
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continue;
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neighbors.Add(ent.Value);
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occupiedTiles.Add(neighborPos);
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break;
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}
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if (oldCount == occupiedTiles.Count)
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freeTiles.Add(neighborPos);
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}
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}
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public List<EntityUid> GetNeighbors(EntityUid uid, AirtightComponent comp)
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{
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var neighbors = new List<EntityUid>();
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if (!EntityManager.TryGetComponent<TransformComponent>(uid, out var transform))
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return neighbors; // how did we get here?
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if (!_mapManager.TryGetGrid(transform.GridUid, out var grid))
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return neighbors;
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var tile = grid.TileIndicesFor(transform.Coordinates);
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var nodeQuery = GetEntityQuery<NodeContainerComponent>();
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for (var i = 0; i < Atmospherics.Directions; i++)
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{
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var direction = (AtmosDirection) (1 << i);
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if (!comp.AirBlockedDirection.IsFlagSet(direction))
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continue;
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var directionEnumerator =
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grid.GetAnchoredEntitiesEnumerator(SharedMapSystem.GetDirection(tile, direction.ToDirection()));
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while (directionEnumerator.MoveNext(out var ent))
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{
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if (!nodeQuery.TryGetComponent(ent, out var nodeContainer))
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continue;
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foreach (var name in _spreaderGroups)
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{
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if (!nodeContainer.Nodes.ContainsKey(name))
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continue;
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neighbors.Add(ent.Value);
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break;
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}
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}
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}
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return neighbors;
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}
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}
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