initial commit, lordsawar source, slightly modified

[lordsawar] / src / QCitySack.h

//  Copyright (C) 2007, 2008, 2009 Ben Asselstine
//
//  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 Library General Public License for more details.
//
//  You should have received a copy of the GNU General Public License
//  along with this program; if not, write to the Free Software
//  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 
//  02110-1301, USA.
#ifndef QUEST_CITY_SACK_H
#define QUEST_CITY_SACK_H

#include <sigc++/trackable.h>

#include <list>
#include "Quest.h"

class City;
class XML_Helper;

//! A Quest where the Hero must sack a City owned by another Player.
/**
 * A hero that receives this quest has to sack a specific city to fulfill
 * it.  The Quest is completed when this happens, but the quest is expired if
 * the user conquers the correct city but forgets to sack the city.
 *
 * Sacking involves cashing in all of the Army production bases that the City
 * offers, except for the weakest one.
 */
class QuestCitySack : public Quest, public sigc::trackable
{
public:
    //! Default constructor.
    /**
     * Make a new city sacking quest.
     *
     * @param q_mgr  The quests manager to associate this quest with.
     * @param hero   The Id of the Hero who is responsible for the quest.
     */
    QuestCitySack(QuestsManager& q_mgr, guint32 hero);

    //! Loading constructor.
    /**
     * @param q_mgr   The quests manager to associate this quest with.
     * @param helper  The opened saved-game file to load this quest from.
     */
    QuestCitySack(QuestsManager& q_mgr, XML_Helper* helper);

    // Construct from remote action.
    QuestCitySack(QuestsManager& q_mgr, guint32 hero, guint32 target);

    // Get Methods

    //! Return a description of how well the city sacking quest is going.
    std::string getProgress() const;

    //! Return a queue of strings to show when the quest is compeleted.
    void getSuccessMsg(std::queue<std::string>& msgs) const;

    //! Return a queue of strings to show when the quest has expired.
    void getExpiredMsg(std::queue<std::string>& msgs) const;

    //! Returns the id of the City object to be sacked.
    guint32 getCityId() const {return d_city;}


    // Methods that operate on the class data but do not modify the class.

    //! Saves the sacking quest data to an opened saved-game file.
    bool save(XML_Helper* helper) const;

    //! Returns a pointer to the City object to be sacked.
    City* getCity() const;


    // Methods that need to be implemented from the superclass.

    //! Callback for when an Army object is killed.
    /**
     * @note This method is not used.
     */
    void armyDied(Army *a, bool heroIsCulprit);

    //! Callback for when a City object is defeated.
    /**
     * This method notifies the Quest that a City has fallen, and what the 
     * conquering action (pillage/sack/raze/occupy) was.  It also notifies
     * whether or not the hero responsible for this quest was involved in 
     * the conquering, and how much gold was taken as a result.
     *
     * If the city isn't sacked then the Quest is expired.
     * If the city is sacked then the Quest is completed.
     *
     * @param city           The City object that has been conquered.
     * @param action         What action was taken by the Player.  See
     *                       CityDefeatedAction for more information.
     * @param heroIsCulprit  Whether or not the Hero object associated with
     *                       this Quest object is responsible for 
     *                       conquering the given City object.
     * @param gold           How many gold pieces were taken as a result
     *                       of the action.
     */
    void cityAction(City *city, CityDefeatedAction action, 
                    bool heroIsCulprit, int gold);


    // Static Methods

    //! Returns whether or not this quest is impossible.
    /**
     * Scans all City objects in the Citylist to see if there is one the 
     * active player can sack.
     *
     * @note This method is static because it is executed before the
     *       Quest is instantiated.  It is also called from within the
     *       instantiated Quest.
     *
     * @param heroId  The Id of the Hero responsible for the sacking quest.
     *
     * @return Whether or not the quest is possible.
     */
    static bool isFeasible(guint32 heroId);

private:

    //! Make a quest description about the city that needs to be sacked.
    void initDescription();

    //! Return a pointer to a random city not owned by the given player.
    /**
     * Find a city to sack.
     *
     * Scan through all of the City objects in the Citylist for a city
     * that is not owned by the given player or by neutral.  Pick a random
     * one that has more than 1 Army production base and return it.
     *
     * @param player  The player whose City objects are exempt from being
     *                selected as a target for sacking.
     *
     * @return A pointer to a City object that can be sacked by the Hero.
     *         If no valid City objects are found, this method returns NULL.
     */
    static City* chooseToSack(Player *p);

    //! The Id of the target City object to sack.
    guint32 d_city;
};

#endif