20f2cb920b
This PR adds delta-pressure damage. In short, airtight structures can now take damage proportional to the difference in pressures between the sides of the structure.
83 lines
2.9 KiB
C#
83 lines
2.9 KiB
C#
using Content.Server.Atmos.Components;
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using Content.Shared.Examine;
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using Robust.Shared.Map.Components;
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namespace Content.Server.Atmos.EntitySystems;
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/// <summary>
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/// <para>System that handles <see cref="DeltaPressureComponent"/>.</para>
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///
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/// <para>Entities with a <see cref="DeltaPressureComponent"/> will take damage per atmostick
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/// depending on the pressure they experience.</para>
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///
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/// <para>DeltaPressure logic is mostly handled in a partial class in Atmospherics.
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/// This system handles the adding and removing of entities to a processing list,
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/// as well as any field changes via the API.</para>
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/// </summary>
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public sealed class DeltaPressureSystem : EntitySystem
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{
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[Dependency] private readonly AtmosphereSystem _atmosphereSystem = default!;
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[Dependency] private readonly SharedMapSystem _map = default!;
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public override void Initialize()
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{
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base.Initialize();
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SubscribeLocalEvent<DeltaPressureComponent, ComponentInit>(OnComponentInit);
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SubscribeLocalEvent<DeltaPressureComponent, ComponentShutdown>(OnComponentShutdown);
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SubscribeLocalEvent<DeltaPressureComponent, ExaminedEvent>(OnExamined);
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SubscribeLocalEvent<DeltaPressureComponent, MoveEvent>(OnMoveEvent);
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SubscribeLocalEvent<DeltaPressureComponent, GridUidChangedEvent>(OnGridChanged);
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}
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private void OnMoveEvent(Entity<DeltaPressureComponent> ent, ref MoveEvent args)
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{
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var xform = Transform(ent);
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// May move off-grid, so, might as well protect against that.
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if (!TryComp<MapGridComponent>(xform.GridUid, out var mapGridComponent))
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{
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return;
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}
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ent.Comp.CurrentPosition = _map.CoordinatesToTile(xform.GridUid.Value, mapGridComponent, args.NewPosition);
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}
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private void OnComponentInit(Entity<DeltaPressureComponent> ent, ref ComponentInit args)
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{
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var xform = Transform(ent);
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if (xform.GridUid == null)
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return;
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_atmosphereSystem.TryAddDeltaPressureEntity(xform.GridUid.Value, ent);
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}
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private void OnComponentShutdown(Entity<DeltaPressureComponent> ent, ref ComponentShutdown args)
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{
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// Wasn't part of a list, so nothing to clean up.
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if (ent.Comp.GridUid == null)
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return;
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_atmosphereSystem.TryRemoveDeltaPressureEntity(ent.Comp.GridUid.Value, ent);
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}
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private void OnExamined(Entity<DeltaPressureComponent> ent, ref ExaminedEvent args)
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{
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if (ent.Comp.IsTakingDamage)
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args.PushMarkup(Loc.GetString("window-taking-damage"));
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}
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private void OnGridChanged(Entity<DeltaPressureComponent> ent, ref GridUidChangedEvent args)
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{
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if (args.OldGrid != null)
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{
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_atmosphereSystem.TryRemoveDeltaPressureEntity(args.OldGrid.Value, ent);
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}
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if (args.NewGrid != null)
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{
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_atmosphereSystem.TryAddDeltaPressureEntity(args.NewGrid.Value, ent);
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}
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}
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}
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