47 lines
1.3 KiB
C#
47 lines
1.3 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 struct FilterBuilder
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{
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private TypeIndices ComponentTypeIndices;
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private FilterStorage FilterStorage;
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private HashSet<int> Included;
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private HashSet<int> Excluded;
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internal FilterBuilder(FilterStorage filterStorage, TypeIndices componentTypeIndices)
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{
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FilterStorage = filterStorage;
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ComponentTypeIndices = componentTypeIndices;
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Included = new HashSet<int>();
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Excluded = new HashSet<int>();
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}
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private FilterBuilder(FilterStorage filterStorage, TypeIndices componentTypeIndices, HashSet<int> included, HashSet<int> excluded)
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{
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FilterStorage = filterStorage;
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ComponentTypeIndices = componentTypeIndices;
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Included = included;
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Excluded = excluded;
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}
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public FilterBuilder Include<TComponent>() where TComponent : unmanaged
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{
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Included.Add(ComponentTypeIndices.GetIndex<TComponent>());
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return new FilterBuilder(FilterStorage, ComponentTypeIndices, Included, Excluded);
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}
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public FilterBuilder Exclude<TComponent>() where TComponent : unmanaged
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{
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Excluded.Add(ComponentTypeIndices.GetIndex<TComponent>());
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return new FilterBuilder(FilterStorage, ComponentTypeIndices, Included, Excluded);
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}
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public Filter Build()
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{
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return FilterStorage.CreateFilter(Included, Excluded);
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}
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}
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}
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