helios::ecs::SystemTrait Concept Reference

Concept for systems that declare all data access via parameter types. More...

#include <system.hpp>

Concept definition

template<typename T>
concept SystemTrait =
    std::destructible<T> &&
    (std::move_constructible<T> || std::copy_constructible<T>) &&
    !std::is_polymorphic_v<std::remove_cvref_t<T>> &&
    std::is_object_v<std::remove_cvref_t<T>> &&
    details::HasSystemParamCallOperator<T>

Detailed Description

Concept for systems that declare all data access via parameter types.

A system must be destructible, move or copy constructible, not polymorphic, an object type, and its operator() parameters must all have SystemParamTraits specialisations.

Definition at line 87 of file system.hpp.