#ifndef CREATURELIB_HISTORYELEMENT_HPP
#define CREATURELIB_HISTORYELEMENT_HPP

#include "../HistoryElementKind.hpp"

namespace CreatureLib::Battling {
    class HistoryElement {
        friend class HistoryHolder;
        u8* _previousOffset = nullptr;

    protected:
        virtual void Clear() {
            if (_previousOffset != nullptr) {
                GetPrevious()->Clear();
            }
        }

    public:
        virtual HistoryElementKind GetKind() const noexcept = 0;
        ArbUt::BorrowedPtr<const HistoryElement> GetPrevious() const noexcept {
            return reinterpret_cast<HistoryElement*>((u8*)this - _previousOffset);
        }

        ArbUt::BorrowedPtr<HistoryElement> GetPrevious() noexcept {
            return reinterpret_cast<HistoryElement*>((u8*)this - _previousOffset);
        }
    };

}

#endif // CREATURELIB_HISTORYELEMENT_HPP