EcsFilter.h

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#pragma once
 
#include <type_traits>
 
namespace nc::ecs
{
enum class FilterBase
{
    None  = 0, // Include only explicitly listed types and those derived from FreeComponent.
    Basic = 1, // Include common types needed to enable operations and any explicitly requested types.
    All   = 2  // Include all types.
};
 
namespace detail
{
template<class... Ts>
struct MatchFilter
{
    template<class T>
    static constexpr auto included = (std::is_same_v<T, Ts> || ...);
};
 
struct AllFilter
{
    template<class T>
    static constexpr auto included = true;
};
} // namespace detail
} // namespace nc::ecs