SystemTypeId.ixx File

Unique type identifier for system types. More...

Included Headers

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

Namespaces Index

namespace	helios
namespace	engine
namespace	runtime
namespace	world
namespace	types

Classes Index

class	SystemTypeId
	Unique type identifier for system types. More...
struct	helios_engine_common_tag_SystemTypes
	Tag type for the TypeIndexer domain. More...
struct	hash<helios::engine::runtime::world::types::SystemTypeId>
	Hash specialization for SystemTypeId. More...

Description

Unique type identifier for system types.

File Listing

The file content with the documentation metadata removed is:

1

5module;

6

7#include <functional>

8#include <cstddef>

9

10export module helios.engine.runtime.world.types.SystemTypeId;

11

12import helios.ecs.TypeIndexer;

13import helios.ecs.types;

14

15export namespace helios::engine::runtime::world::types {

16

28 class SystemTypeId {

29

33 struct helios_engine_common_tag_SystemTypes{};

34

35 using SystemType = helios_engine_common_tag_SystemTypes;

36

40 size_t id_{0};

41

42

43 public:

44

45

51 explicit SystemTypeId(const size_t id) : id_(id) {}

52

53

59 explicit SystemTypeId(helios::ecs::types::no_init_t) {}

60

61

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

68 return id_;

69 }

70

71

82 template <typename T>

83 [[nodiscard]] static SystemTypeId id() {

84 static const size_t tid = helios::ecs::TypeIndexer<SystemType>::typeIndex<T>();

85 return SystemTypeId(tid);

86 }

87

88 friend constexpr bool operator==(SystemTypeId, SystemTypeId) noexcept = default;

89 };

90

91

92}

93

94

98template<>

99struct std::hash<helios::engine::runtime::world::types::SystemTypeId> {

100 std::size_t operator()(const helios::engine::runtime::world::types::SystemTypeId& id) const noexcept {

101 return id.value();

102 }

103

104};

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