action_village.cpp

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/*
   Copyright (C) 2008 - 2018 by Fabian Mueller <fabianmueller5@gmx.de>
   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
 * Editor label action classes
 */
#define GETTEXT_DOMAIN "wesnoth-editor"

#include "editor/action/action_village.hpp"

#include "editor/map/map_context.hpp"
#include "team.hpp"

namespace editor
{
IMPLEMENT_ACTION(village)

std::unique_ptr<editor_action> editor_action_village::perform(map_context& mc) const
{
    if(!mc.map().is_village(loc_)) {
        return nullptr;
    }

    std::vector<team>& teams = mc.teams();

    try {
        if(teams.at(side_number_).owns_village(loc_)) {
            return nullptr;
        }
    } catch(const std::out_of_range&) {
        // side_number_ was an invalid team index.
    }

    auto undo = static_cast<std::unique_ptr<editor_action>>(std::make_unique<editor_action_village_delete>(loc_));

    for(const team& t : teams) {
        if(t.owns_village(loc_)) {
            undo = std::make_unique<editor_action_village>(loc_, t.side() - 1);
        }
    }

    perform_without_undo(mc);
    return undo;
}

void editor_action_village::perform_without_undo(map_context& mc) const
{
    std::vector<team>& teams = mc.teams();

    for(team& t : teams) {
        if(t.owns_village(loc_)) {
            t.lose_village(loc_);
        }
    }

    // TODO 0 is a bad argument
    teams[side_number_].get_village(loc_, 0, nullptr);
}

IMPLEMENT_ACTION(village_delete)

std::unique_ptr<editor_action> editor_action_village_delete::perform(map_context& mc) const
{
    // \todo: can this delete more than one village? If it can't, why isn't the return statement
    // inside the loop? If it can, why doesn't it return an editor_action_chain of undo actions?
    std::unique_ptr<editor_action> undo;

    for(const team& t : mc.teams()) {
        if(t.owns_village(loc_)) {
            perform_without_undo(mc);
            undo = std::make_unique<editor_action_village>(loc_, t.side() - 1);
        }
    }

    return undo;
}

void editor_action_village_delete::perform_without_undo(map_context& mc) const
{
    for(team& t : mc.teams()) {
        if(t.owns_village(loc_)) {
            t.lose_village(loc_);
            mc.add_changed_location(loc_);
        }
    }
}

} // end namespace editor