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/*
* Copyright (C) 2006-2024 by the Widelands Development Team
*
* 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; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <https://www.gnu.org/licenses/>.
*
*/
#include "logic/widelands_geometry.h"
namespace Widelands {
Coords::Coords(const int16_t nx, const int16_t ny) : x(nx), y(ny) {
}
bool Coords::operator==(const Coords& other) const {
return x == other.x && y == other.y;
}
bool Coords::operator!=(const Coords& other) const {
return !(*this == other);
}
Coords::operator bool() const {
return *this != null();
}
void Coords::reorigin(Coords new_origin, const Extent& extent) {
if (*this) {
if (y < new_origin.y) {
y += extent.h;
}
y -= new_origin.y;
if (((y & 1) != 0) && ((new_origin.y & 1) != 0) && ++new_origin.x == extent.w) {
new_origin.x = 0;
}
if (x < new_origin.x) {
x += extent.w;
}
x -= new_origin.x;
}
}
// static
Coords Coords::null() {
return Coords(-1, -1);
}
// Hash coordinates to use them as keys in a container
uint32_t Coords::hash() const {
return x << 16 | y;
}
// Unhash coordinates so they can be gotten from a container
Coords Coords::unhash(uint32_t hash) {
Coords coords;
coords.x = hash >> 16; // is cast needed here???
coords.y = hash;
return coords;
}
} // namespace Widelands
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