mirror of
https://github.com/DCFApixels/DragonECS.git
synced 2025-09-19 10:34:37 +08:00
29 lines
1.0 KiB
C#
29 lines
1.0 KiB
C#
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using System.Runtime.CompilerServices;
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using System.Runtime.InteropServices;
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namespace DCFApixels.DragonECS
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{
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#pragma warning disable CS0660, CS0661
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/// <summary>Single frame entity identifier</summary>
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[StructLayout(LayoutKind.Sequential, Pack = 4, Size = 4)]
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public readonly ref partial struct ent
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{
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internal readonly int id;
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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internal ent(int id) => this.id = id;
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public static explicit operator ent(int id) => new ent(id);
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public static explicit operator int(ent entityID) => entityID.id;
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public static bool operator ==(ent a, ent b) => a.id == b.id;
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public static bool operator !=(ent a, ent b) => a.id != b.id;
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public static bool operator ==(ent a, Null? _) => a.id == 0;
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public static bool operator ==(Null? _, ent b) => b.id == 0;
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public static bool operator !=(ent a, Null? _) => a.id != 0;
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public static bool operator !=(Null? _, ent b) => b.id != 0;
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public struct Null { }
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}
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}
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