ai/composite/contexts.hpp

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/* $Id: contexts.hpp 52533 2012-01-07 02:35:17Z shadowmaster $ */
/*
   Copyright (C) 2009 - 2012 by Yurii Chernyi <terraninfo@terraninfo.net>
   Part of the Battle for Wesnoth Project http://www.wesnoth.org/

   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 2 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.

   See the COPYING file for more details.
*/

/**
 * @file
 * Composite AI contexts
 */

#ifndef AI_COMPOSITE_CONTEXTS_HPP_INCLUDED
#define AI_COMPOSITE_CONTEXTS_HPP_INCLUDED

#include "../default/contexts.hpp"

#ifdef _MSC_VER
#pragma warning(push)
//silence "inherits via dominance" warnings
#pragma warning(disable:4250)
#endif


//============================================================================
namespace ai {

class ai_context : public virtual default_ai_context {
public:

    /**
     * Unwrap
     */
    virtual ai_context& get_ai_context() = 0;


};


class rca_context;
class rca_context : public virtual ai_context {
public:


    /**
     * Constructor
     */
    rca_context();


    /**
     * Destructor
     */
    virtual ~rca_context();


    /**
     * Unwrap
     */
    virtual rca_context& get_rca_context() = 0;
};


class candidate_action_context;
class candidate_action_context : public virtual rca_context {
public:


    /**
     * Constructor
     */
    candidate_action_context() {}


    /**
     * Destructor
     */
    virtual ~candidate_action_context() {}


    /**
     * Unwrap
     */
    virtual candidate_action_context& get_candidate_action_context() = 0;
};

// proxies
class ai_context_proxy : public virtual ai_context, public virtual default_ai_context_proxy {
public:
    ai_context_proxy();


    void init_ai_context_proxy(ai_context &target)
    {
        init_default_ai_context_proxy(target);
        target_ = &target;
    }


    virtual ~ai_context_proxy();


    ai_context& get_ai_context()
    {
        return target_->get_ai_context();
    }


private:
    ai_context *target_;
};


class rca_context_proxy : public virtual rca_context, public virtual ai_context_proxy {
public:
    rca_context_proxy();


    virtual ~rca_context_proxy();


    void init_rca_context_proxy(rca_context &target)
    {
        init_ai_context_proxy(target);
        target_ = &target;
    }


    rca_context& get_rca_context()
    {
        return target_->get_rca_context();
    }


private:
    rca_context *target_;
};


} //end of namespace ai

#ifdef _MSC_VER
#pragma warning(pop)
#endif


#endif