CallableSystem.ixx File

Small ECS system wrapper around an update lambda. More...

Included Headers

#include <memory> #include <functional> #include <type_traits> #include <utility> #include <helios.ecs.components> #include <helios.engine.runtime.world.UpdateContext> #include <helios.engine.runtime.world.tags.SystemRole>

Namespaces Index

namespace	helios
namespace	engine
namespace	core
namespace	systems
namespace	components

Classes Index

class	CallableSystem<THandle, TFunc>
	ECS system that executes a stored lambda on each update. More...

Description

Small ECS system wrapper around an update lambda.

File Listing

The file content with the documentation metadata removed is:

1

5module;

6

7#include <memory>

8#include <functional>

9#include <type_traits>

10#include <utility>

11

12export module helios.engine.core.systems.CallableSystem;

13

14import helios.engine.runtime.world.tags.SystemRole;

15import helios.engine.runtime.world.UpdateContext;

16

17import helios.ecs.components;

18

19using namespace helios::ecs::components;

20using namespace helios::engine::runtime::world;

21using namespace helios::engine::runtime::world::tags;

22

23export namespace helios::engine::core::systems {

24

31 template <typename THandle, typename TFunc>

32 class CallableSystem {

33

34 TFunc lambda_;

35

36 public:

37

38 using EngineRoleTag = CallableSystemRole;

39

44 explicit CallableSystem(TFunc lambda) : lambda_(std::move(lambda)) {}

45

46

51 void update(UpdateContext& updateContext) noexcept {

52 std::invoke(lambda_, updateContext);

53 }

54

55 };

56

67 template<typename THandle, typename TFunc>

68 [[nodiscard]] auto callableSystemForLambda(TFunc&& func) {

69 using FuncType = std::remove_cvref_t<TFunc>;

70

71 return CallableSystem<THandle, FuncType>(std::forward<TFunc>(func));

72

73 };

74}

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