ComponentTypeId.ixx File

Compile-time type identifier for component types. More...

Included Headers

#include <functional> #include <cstddef> #include <helios.ecs.types.TypeDefs> #include <helios.ecs.TypeIndexer>

Namespaces Index

namespace	helios
namespace	ecs
namespace	types

Classes Index

class	ComponentTypeId<THandle>
	Unique type identifier for component types, scoped per domain. More...
struct	hash<helios::ecs::types::ComponentTypeId< THandle >>
	std::hash specialization for ComponentTypeId. More...

Description

Compile-time type identifier for component types.

Provides a unique, compile-time generated ID for each component type, enabling O(1) direct indexing into the component storage vector within GameObject.

File Listing

The file content with the documentation metadata removed is:

1

8module;

9

10#include <functional>

11#include <cstddef>

12

13export module helios.ecs.types.ComponentTypeId;

14

15import helios.ecs.TypeIndexer;

16import helios.ecs.types.TypeDefs;

17

18export namespace helios::ecs::types {

19

52 template<typename THandle>

53 class ComponentTypeId {

54

58 size_t id_{0};

59

60 public:

61

72 explicit ComponentTypeId(const size_t id) : id_(id) {}

73

79 explicit ComponentTypeId(helios::ecs::types::no_init_t) {}

80

86 [[nodiscard]] size_t value() const noexcept {

87 return id_;

88 }

89

100 template <typename T>

101 [[nodiscard]] static ComponentTypeId<THandle> id() {

102 static const size_t tid = helios::ecs::TypeIndexer<THandle>::template typeIndex<T>();

103 return ComponentTypeId(tid);

104 }

105

106 friend constexpr bool operator==(ComponentTypeId, ComponentTypeId) noexcept = default;

107 };

108

109

110}

111

112

118template<typename THandle>

119struct std::hash<helios::ecs::types::ComponentTypeId<THandle>> {

120 std::size_t operator()(const helios::ecs::types::ComponentTypeId<THandle>& id) const noexcept {

121 return id.value();

122 }

123

124};

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