30 lines
834 B
C#
30 lines
834 B
C#
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namespace OECS;
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/// <summary>
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/// Describes a query over the ECS world.
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/// Composed of a set of required component types ("with") and
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/// a set of excluded component types ("without").
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/// </summary>
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public class QueryDescriptor
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{
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/// <summary>
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/// Component types that must be present on matching entities.
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/// </summary>
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public IReadOnlySet<Type> With { get; }
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/// <summary>
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/// Component types that must NOT be present on matching entities.
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/// </summary>
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public IReadOnlySet<Type> Without { get; }
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internal QueryDescriptor(HashSet<Type> with, HashSet<Type> without)
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{
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With = with;
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Without = without;
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}
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/// <summary>
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/// Returns true if this query has no "with" components (matches nothing).
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/// </summary>
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internal bool IsEmpty => With.Count == 0;
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}
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