shroud_clearing_action.hpp

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/*
    Copyright (C) 2017 - 2021
    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.
*/

#pragma once

#include "vision.hpp"
#include "map/location.hpp"
#include "units/ptr.hpp"

namespace actions
{
/** base class for classes that clear srhoud (move/recruit/recall) */
struct shroud_clearing_action
{

    shroud_clearing_action(const config& cfg)
        : route()
        , view_info(cfg.child_or_empty("unit"))
        , original_village_owner(cfg["village_owner"].to_int())
        , take_village_timebonus(cfg["village_timebonus"].to_bool())
    {
        read_locations(cfg, route);
    }

    shroud_clearing_action(const unit_const_ptr u, const map_location& loc, int village_owner, bool village_bonus)
        : route(1, loc)
        , view_info(*u)
        , original_village_owner(village_owner)
        , take_village_timebonus(village_bonus)
    {

    }

    typedef std::vector<map_location> route_t;

    shroud_clearing_action(const unit_const_ptr u, const route_t::const_iterator& begin, const route_t::const_iterator& end, int village_owner, bool village_bonus)
        : route(begin, end)
        , view_info(*u)
        , original_village_owner(village_owner)
        , take_village_timebonus(village_bonus)
    {

    }

    /**
     * The hexes occupied by the affected unit during this action.
     * For recruits and recalls this only contains one hex.
     */
    route_t route;
    /** A record of the affected unit's ability to see. */
    clearer_info view_info;
    /**
     * The number of the side that preivously owned the village that the unit stepped on
     * Note, that recruit/recall actions can also take a village if the unit was recruits/recalled onto a village
     */
    int original_village_owner;
    /** Whether this actions got a timebonus because it took a village. */
    bool take_village_timebonus;

    /** Change village owner on undo. */
    void return_village();
    /** Change village owner on redo. */
    void take_village();

    void write(config & cfg) const
    {
        write_locations(route, cfg);
        view_info.write(cfg.add_child("unit"));
        cfg["village_owner"] = original_village_owner;
        cfg["village_timebonus"] = take_village_timebonus;
    }

    virtual ~shroud_clearing_action() {}
};
}