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40 lines
1.6 KiB
40 lines
1.6 KiB
using System; |
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using static gaemstone.Flecs.Core; |
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namespace gaemstone.ECS; |
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[AttributeUsage(AttributeTargets.Struct)] |
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public class EntityAttribute : Attribute { } |
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/// <seealso cref="Tag"/> |
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[AttributeUsage(AttributeTargets.Struct)] |
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public class TagAttribute : Attribute { } |
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/// <seealso cref="Component"/> |
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[AttributeUsage(AttributeTargets.Class | AttributeTargets.Struct | AttributeTargets.Enum)] |
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public class ComponentAttribute : Attribute { } |
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/// <summary> |
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/// A singleton is a single instance of a tag or component that can be retrieved |
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/// without explicitly specifying an entity in a query, where it is equivalent |
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/// to <see cref="SourceAttribute{}"/> with itself as the generic type parameter. |
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/// </summary> |
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[AttributeUsage(AttributeTargets.Class | AttributeTargets.Struct | AttributeTargets.Enum)] |
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public class SingletonAttribute : Attribute |
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{ public bool AutoAdd { get; init; } = true; } |
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/// <summary> |
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/// Marked entity represents a relationship type. |
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/// It may be used as the "relation" in a pair. |
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/// </summary> |
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/// <remarks> |
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/// The relationship may have component data associated with |
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/// it when added to an entity under these circumstances: |
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/// <list type="bullet"> |
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/// <item>If marked as a <see cref="TagAttribute"/>, does not carry data.</item> |
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/// <item>If marked as a <see cref="ComponentAttribute"/>, carries the relation's data.</item> |
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/// <item>If marked with neither, will carry the target's data, if it's a component.</item> |
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/// </list> |
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/// </remarks> |
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[AttributeUsage(AttributeTargets.Class | AttributeTargets.Struct | AttributeTargets.Enum)] |
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public class RelationAttribute : Attribute { }
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