entity.hpp

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// entity.hpp
/*
 *  Copyright (c) 2018, 2020 Leigh Johnston.
 *
 *  All rights reserved.
 *
 *  Redistribution and use in source and binary forms, with or without
 *  modification, are permitted provided that the following conditions are
 *  met:
 *
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *
 *     * Redistributions in binary form must reproduce the above copyright
 *       notice, this list of conditions and the following disclaimer in the
 *       documentation and/or other materials provided with the distribution.
 *
 *     * Neither the name of Leigh Johnston nor the names of any
 *       other contributors to this software may be used to endorse or
 *       promote products derived from this software without specific prior
 *       written permission.
 *
 *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
 *  IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
 *  THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 *  PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
 *  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 *  EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 *  PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 *  PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
 *  LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 *  NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 *  SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
 
#pragma once
 
#include <neolib/neolib.hpp>
#include <neolib/task/event.hpp>
#include <neolib/ecs/i_ecs.hpp>
 
namespace neolib::ecs
{
    class NEOLIB_EXPORT entity
    {
    public:
        entity(i_ecs& aEcs, entity_id aId);
        entity(i_ecs& aEcs, const entity_archetype_id& aArchetypeId);
        template <typename... ComponentData>
        entity(i_ecs& aEcs, const entity_archetype_id& aArchetypeId, ComponentData&&... aComponentData) :
            entity{ aEcs, aEcs.create_entity(aArchetypeId, aComponentData...) } {}
        ~entity();
    public:
        entity(const entity& aOther) = delete;
        entity& operator=(const entity& aOther) = delete;
    public:
        i_ecs& ecs() const;
        entity_id id() const;
        bool detached_or_destroyed() const;
        entity_id detach();
    private:
        i_ecs& iEcs;
        entity_id iId;
        sink iSink;
    };
}