time.hpp

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// time.hpp
/*
  neogfx C++ GUI Library
  Copyright (c) 2018 Leigh Johnston.  All Rights Reserved.
  
  This program is free software: you can redistribute it and / or modify
  it under the terms of the GNU 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 General Public License for more details.
  
  You should have received a copy of the GNU General Public License
  along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/
#pragma once

#include <neogfx/neogfx.hpp>
#include <neogfx/game/chrono.hpp>
#include <neogfx/game/system.hpp>

namespace neogfx::game
{
    class time : public system
    {

    public:
        time(game::i_ecs& aEcs);
    public:
        const system_id& id() const override;
        const i_string& name() const override;
    public:
        void apply() override;
    public:
        step_time system_time() const;
        step_time world_time() const;
    public:
        struct meta
        {
            static const neolib::uuid& id()
            {
                static const neolib::uuid sId = { 0x714a0e4a, 0xd0be, 0x4737, 0xbd25, { 0xe8, 0x3e, 0x2a, 0x5c, 0xd7, 0x65 } };
                return sId;
            }
            static const i_string& name()
            {
                static const string sName = "Time";
                return sName;
            }
        };
    private:
        mutable optional_step_time iSystemTimeOffset;
    };
}