renderobjectptr.h

/* ScummVM - Graphic Adventure Engine
 *
 * ScummVM is the legal property of its developers, whose names
 * are too numerous to list here. Please refer to the COPYRIGHT
 * file distributed with this source distribution.
 *
 * 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/>.
 *
 */

/*
 * This code is based on Broken Sword 2.5 engine
 *
 * Copyright (c) Malte Thiesen, Daniel Queteschiner and Michael Elsdoerfer
 *
 * Licensed under GNU GPL v2
 *
 */

#ifndef SWORD25_RENDER_OBJECT_PTR_H
#define SWORD25_RENDER_OBJECT_PTR_H

// -----------------------------------------------------------------------------
// Includes
// -----------------------------------------------------------------------------

#include "sword25/kernel/common.h"
#include "sword25/gfx/renderobjectregistry.h"

namespace Sword25 {

class RenderObject;

template<class T>
class RenderObjectPtr {
public:
    RenderObjectPtr() : _handle(0) {}

    RenderObjectPtr(uint handle) : _handle(handle) {}

    T *operator->() const {
        return static_cast<T *>(RenderObjectRegistry::instance().resolveHandle(_handle));
    }

    bool operator==(const RenderObjectPtr<T> & other) {
        return _handle == other._handle;
    }

    bool isValid() const {
        return RenderObjectRegistry::instance().resolveHandle(_handle) != 0;
    }

    void erase() {
        delete static_cast<T *>(RenderObjectRegistry::instance().resolveHandle(_handle));
        _handle = 0;
    }

private:
    uint _handle;
};

} // End of namespace Sword25

#endif