PollActions.hpp

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#ifndef ECSTASY_INTEGRATIONS_USER_ACTION_POLLACTIONS_HPP_
#define ECSTASY_INTEGRATIONS_USER_ACTION_POLLACTIONS_HPP_
 
#include <utility>
#include "Action.hpp"
#include "ActionListener.hpp"
#include "PendingActions.hpp"
#include "ecstasy/registry/Registry.hpp"
#include "ecstasy/system/ISystem.hpp"
 
namespace ecstasy::integration::user_action
{
    template <typename Actions>
    class PollActions;
 
    template <Action::Id... Actions>
    class PollActions<std::integer_sequence<Action::Id, Actions...>> : public ecstasy::ISystem {
      public:
        void run(Registry &registry) override final
        {
            if (!registry.hasResource<PendingActions>()) [[unlikely]]
                return;
            RR<PendingActions> pendingActions = registry.getResource<PendingActions>();
            while (!pendingActions.get()->empty()) {
                std::ignore = std::make_tuple((callListeners<Actions>(registry, pendingActions.get()->front()), 0)...);
                pendingActions.get()->pop();
            }
        }
 
      private:
        template <Action::Id A>
        void callListeners(Registry &registry, Action action)
        {
            if (action.id != A && A != Action::All)
                return;
 
            for (auto [entity, listener] : registry.query<ecstasy::Entities, ActionIdListener<A>>())
                listener.listener(registry, entity, action);
        }
    };
} // namespace ecstasy::integration::user_action
 
#endif /* !ECSTASY_INTEGRATIONS_USER_ACTION_POLLACTIONS_HPP_ */