38 lines
1.1 KiB
C#
38 lines
1.1 KiB
C#
using System;
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using System.Collections.Generic;
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namespace MoonTools.ECS
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{
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public class Filter
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{
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internal FilterSignature Signature;
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private FilterStorage FilterStorage;
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internal Filter(FilterStorage filterStorage, HashSet<int> included, HashSet<int> excluded)
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{
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FilterStorage = filterStorage;
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Signature = new FilterSignature(included, excluded);
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}
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public ReverseSpanEnumerator<Entity> Entities => FilterStorage.FilterEntities(Signature);
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public RandomEntityEnumerator EntitiesInRandomOrder => FilterStorage.FilterEntitiesRandom(Signature);
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public Entity RandomEntity => FilterStorage.FilterRandomEntity(Signature);
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public int Count => FilterStorage.FilterCount(Signature);
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public bool Empty => Count == 0;
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// WARNING: this WILL crash if the index is out of range!
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public Entity NthEntity(int index) => FilterStorage.FilterNthEntity(Signature, index);
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public void RegisterAddCallback(Action<Entity> callback)
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{
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FilterStorage.RegisterAddCallback(Signature, callback);
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}
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public void RegisterRemoveCallback(Action<Entity> callback)
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{
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FilterStorage.RegisterRemoveCallback(Signature, callback);
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}
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}
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}
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