Helios Engine
A modular ECS based data-oriented C++23 game engine framework
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helios::ecs::SystemParam Concept Reference

Concept for types usable as system function parameters. More...

#include <system_param.hpp>

Concept definition

template<typename T>
concept SystemParam =
requires(AccessPolicyBuilder& builder, World& world, SystemLocalData& local,
const AccessPolicy& policy) {
{ SystemParamTraits<std::remove_cvref_t<T>>::RegisterAccess(builder) };
{
SystemParamTraits<std::remove_cvref_t<T>>::Make(world, local, policy)
} -> std::same_as<std::remove_cvref_t<T>>;
}
helios::ecs::AccessPolicyBuilder
Fluent builder for constructing an AccessPolicy.
Definition access_policy.hpp:529
helios::ecs::AccessPolicy
Stores data access requirements for a system at compile time.
Definition access_policy.hpp:119
helios::ecs::World
The World class manages entities with their components and systems.
Definition world.hpp:39
helios::ecs::SystemParam
Concept for types usable as system function parameters.
Definition system_param.hpp:28
helios::ecs::SystemLocalData
Local data for a system.
Definition system_local_data.hpp:23
helios::ecs::SystemParamTraits
Primary template — deliberately incomplete.
Definition system_param.hpp:20

Detailed Description

Concept for types usable as system function parameters.

Satisfied when SystemParamTraits<T> provides RegisterAccess and Make.

Definition at line 28 of file system_param.hpp.