point3.h

/* ScummVM - Graphic Adventure Engine
 *
 * ScummVM is the legal property of its developers, whose names
 * are too numerous to list here. Please refer to the COPYRIGHT
 * file distributed with this source distribution.
 *
 * 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 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 <http://www.gnu.org/licenses/>.
 *
 */

#ifndef ULTIMA8_MISC_POINT3_H
#define ULTIMA8_MISC_POINT3_H

namespace Ultima {
namespace Ultima8 {

struct Point3 {
    int32 x, y, z;

    Point3() : x(0), y(0), z(0) {}
    Point3(int32 nx, int32 ny, int32 nz) : x(nx), y(ny), z(nz) {}

    bool operator==(const Point3 &rhs) const { return equals(rhs); }
    bool operator!=(const Point3 &rhs) const { return !equals(rhs); }

    bool equals(const Point3 &p) const {
        return (x == p.x && y == p.y && z == p.z);
    }

    Point3 operator+(const Point3 &delta) const { return Point3(x + delta.x, y + delta.y, z + delta.z); }
    Point3 operator-(const Point3 &delta) const { return Point3(x - delta.x, y - delta.y, z - delta.z); }

    void operator+=(const Point3 &delta) {
        x += delta.x;
        y += delta.y;
        z += delta.z;
    }

    void operator-=(const Point3 &delta) {
        x -= delta.x;
        y -= delta.y;
        z -= delta.z;
    }

    int maxDistXYZ(const Point3 &other) const {
        int xdiff = abs(x - other.x);
        int ydiff = abs(y - other.y);
        int zdiff = abs(z - other.z);
        return MAX(xdiff, MAX(ydiff, zdiff));
    }

    uint32 sqrDist(const Point3 &other) const {
        int xdiff = abs(x - other.x);
        int ydiff = abs(y - other.y);
        int zdiff = abs(z - other.z);
        return uint32(xdiff * xdiff + ydiff * ydiff + zdiff * zdiff);
    }

    void set(int32 nx, int32 ny, int32 nz) {
        x = nx;
        y = ny;
        z = nz;
    }

    void translate(int32 dx, int32 dy, int32 dz) {
        x += dx;
        y += dy;
        z += dz;
    }

    bool loadData(Common::ReadStream *rs, uint32 version) {
        x = rs->readSint32LE();
        y = rs->readSint32LE();
        z = rs->readSint32LE();
        return true;
    }

    void saveData(Common::WriteStream *ws) {
        ws->writeSint32LE(x);
        ws->writeSint32LE(y);
        ws->writeSint32LE(z);
    }
};

} // End of namespace Ultima8
} // End of namespace Ultima

#endif