contexts.hpp

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/*
    Copyright (C) 2009 - 2023
    by Yurii Chernyi <terraninfo@terraninfo.net>
    Part of the Battle for Wesnoth Project https://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
 */
 
#pragma once
 
#include "ai/default/contexts.hpp"
 
//============================================================================
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;
    bool is_offense(){ return is_offense_; }
    void set_offense(){ is_offense_ = true; is_defense_ = false; strategy_set_ = true; }
    bool is_defense(){ return is_defense_; }
    void set_defense(){ is_defense_ = true; is_offense_ = false; strategy_set_ = true; }
    void clear_strategy(){ strategy_set_ = false; }
    bool has_strategy(){ return strategy_set_; }
 
private:
    static bool is_offense_;
    static bool is_defense_;
    static bool strategy_set_;
};
 
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