31 lines
882 B
Swift
31 lines
882 B
Swift
//
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// ComponentIdentifier.swift
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// FirebladeECS
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//
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// Created by Christian Treffs on 08.10.17.
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//
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public typealias ComponentIdentifier = ObjectIdentifier
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extension ComponentIdentifier {
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/// Provides XOR hash value from component identifier (aka type) and entity index.
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/// Is only stable for app runtime.
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///
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/// - Parameter entityIdx: entity index
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/// - Returns: combinded entity component hash
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func hashValue(using entityIdx: EntityIndex) -> EntityComponentHash {
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return hashValue(using: entityIdx.identifier)
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}
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func hashValue(using entityId: EntityIdentifier) -> EntityComponentHash {
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return EntityComponentHash.compose(entityId: entityId, componentTypeHash: hashValue)
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}
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}
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// MARK: Unique Component Identifiable
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public protocol UniqueComponentIdentifiable {
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static var identifier: ComponentIdentifier { get }
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var identifier: ComponentIdentifier { get }
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}
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