action_unit.cpp

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/*
    Copyright (C) 2008 - 2021
    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 unit action class
 */

// TODO is a textdomain needed?
#define GETTEXT_DOMAIN "wesnoth-editor"

#include "editor/action/action_unit.hpp"

#include "editor/map/map_context.hpp"

#include "units/animation_component.hpp"
#include "units/unit.hpp"

namespace editor
{
IMPLEMENT_ACTION(unit)

std::unique_ptr<editor_action> editor_action_unit::perform(map_context& mc) const
{
    auto undo = std::make_unique<editor_action_unit_delete>(loc_);
    perform_without_undo(mc);
    return undo;
}

void editor_action_unit::perform_without_undo(map_context& mc) const
{
    mc.units().add(loc_, *u_);
    mc.units().find(loc_)->set_location(loc_);
    mc.add_changed_location(loc_);
}

IMPLEMENT_ACTION(unit_delete)

std::unique_ptr<editor_action> editor_action_unit_delete::perform(map_context& mc) const
{
    unit_map& units = mc.units();
    unit_map::const_unit_iterator unit_it = units.find(loc_);

    if(unit_it != units.end()) {
        auto undo = std::make_unique<editor_action_unit>(loc_, *unit_it);
        perform_without_undo(mc);
        return undo;
    }

    return nullptr;
}

void editor_action_unit_delete::perform_without_undo(map_context& mc) const
{
    unit_map& units = mc.units();
    if(!units.erase(loc_)) {
        ERR_ED << "Could not delete unit on " << loc_ << std::endl;
    } else {
        mc.add_changed_location(loc_);
    }
}

IMPLEMENT_ACTION(unit_replace)

std::unique_ptr<editor_action> editor_action_unit_replace::perform(map_context& mc) const
{
    auto undo = std::make_unique<editor_action_unit_replace>(new_loc_, loc_);
    perform_without_undo(mc);
    return undo;
}

void editor_action_unit_replace::perform_without_undo(map_context& mc) const
{
    unit_map& units = mc.units();
    units.move(loc_, new_loc_);
    unit::clear_status_caches();

    unit& u = *units.find(new_loc_);

    // TODO do we still need set_standing?
    u.anim_comp().set_standing();

    mc.add_changed_location(loc_);
    mc.add_changed_location(new_loc_);

    /* @todo
      if (mc.map().is_village(new_loc_)) {
        (*(resources::gameboard->teams()))[u.side()].get_village(new_loc_);
    }
    */

    // TODO check if that is useful
    //  game_display::get_singleton()->invalidate_unit_after_move(loc_, new_loc_);
    //  display::get_singleton()->draw();
}

IMPLEMENT_ACTION(unit_facing)

std::unique_ptr<editor_action> editor_action_unit_facing::perform(map_context& mc) const
{
    auto undo = std::make_unique<editor_action_unit_facing>(loc_, old_direction_, new_direction_);
    perform_without_undo(mc);
    return undo;
}

void editor_action_unit_facing::perform_without_undo(map_context& mc) const
{
    unit_map& units = mc.units();
    unit_map::unit_iterator unit_it = units.find(loc_);

    if(unit_it != units.end()) {
        unit_it->set_facing(new_direction_);
        unit_it->anim_comp().set_standing();
    }
}

} // end namespace editor