//////////////////////////////////////////////////////////////////////////////
// This file is part of the Journey MMORPG client                           //
// Copyright © 2015-2016 Daniel Allendorf                                   //
//                                                                          //
// This program is free software: you can redistribute it and/or modify     //
// it under the terms of the GNU Affero General Public License as           //
// published by the Free Software Foundation, either version 3 of the       //
// License, or (at your option) any later version.                          //
//                                                                          //
// This program is distributed in the hope that it will be useful,          //
// but WITHOUT ANY WARRANTY; without even the implied warranty of           //
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the            //
// GNU Affero General Public License for more details.                      //
//                                                                          //
// You should have received a copy of the GNU Affero General Public License //
// along with this program.  If not, see <http://www.gnu.org/licenses/>.    //
//////////////////////////////////////////////////////////////////////////////
#pragma once
#include "../Constants.h"

#include <cstdint>

namespace jrc
{
    class TimedBool
    {
    public:
        TimedBool()
        {
            value = false;
            delay = 0;
            last = 0;
        }

        explicit operator bool() const
        {
            return value;
        }

        void set_for(int64_t millis)
        {
            last = millis;
            delay = millis;
            value = true;
        }

        void update()
        {
            update(Constants::TIMESTEP);
        }

        void update(uint16_t timestep)
        {
            if (value)
            {
                if (timestep >= delay)
                {
                    value = false;
                    delay = 0;
                }
                else
                {
                    delay -= timestep;
                }
            }
        }

        void operator = (bool b)
        {
            value = b;
            delay = 0;
            last = 0;
        }

        bool operator == (bool b) const
        {
            return value == b;
        }

        bool operator != (bool b) const
        {
            return value != b;
        }

        float alpha() const
        {
            return 1.0f - static_cast<float>(static_cast<float>(delay) / last);
        }

    private:
        int64_t last;
        int64_t delay;
        bool value;
    };
}