37 lines
886 B
C#
37 lines
886 B
C#
using System.Collections.Generic;
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using MfGames.Gallium;
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using MfGames.Nitride.Generators;
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using NodaTime;
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namespace MfGames.Nitride.Temporal;
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/// <summary>
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/// Filters out all entities that have an instant before the current
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/// NitrideClock time.
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/// </summary>
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[WithProperties]
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public partial class FilterOutFutureInstant : OperationBase
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{
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public FilterOutFutureInstant(Timekeeper timekeeper)
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{
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this.Timekeeper = timekeeper;
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}
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public Timekeeper Timekeeper { get; set; }
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/// <inheritdoc />
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public override IEnumerable<Entity> Run(IEnumerable<Entity> input)
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{
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Instant now = this.Timekeeper.Clock.GetCurrentInstant();
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return input
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.SelectEntity<Instant>(
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(
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entity,
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instant) =>
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instant.CompareTo(now) <= 0 ? entity : null);
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}
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}
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