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Diffstat (limited to 'engines/zvision/vector2.h')
-rw-r--r-- | engines/zvision/vector2.h | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/engines/zvision/vector2.h b/engines/zvision/vector2.h new file mode 100644 index 0000000000..575915c87d --- /dev/null +++ b/engines/zvision/vector2.h @@ -0,0 +1,79 @@ +/* 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 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, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + */ + +#ifndef ZVISION_VECTOR2_H +#define ZVISION_VECTOR2_H + +#include "common/scummsys.h" + +namespace ZVision { + +/** + * Simple class for handling both 2D position and size. + */ +class Vector2 { +public: + int16 x; ///< The horizontal part of the point + int16 y; ///< The vertical part of the point + +public: + Vector2() : x(0), y(0) {} + Vector2(int16 x1, int16 y1) : x(x1), y(y1) {} + +public: + bool operator==(const Vector2 &p) const { return x == p.x && y == p.y; } + bool operator!=(const Vector2 &p) const { return x != p.x || y != p.y; } + Vector2 operator+(const Vector2 &delta) const { return Vector2(x + delta.x, y + delta.y); } + Vector2 operator-(const Vector2 &delta) const { return Vector2(x - delta.x, y - delta.y); } + + void operator+=(const Vector2 &delta) { + x += delta.x; + y += delta.y; + } + + void operator-=(const Vector2 &delta) { + x -= delta.x; + y -= delta.y; + } + + /** + * Return the square of the distance between this point and the point p. + * + * @param p the other point + * @return the distance between this and p + */ + uint sqrDist(const Vector2 &p) const { + int diffx = ABS(p.x - x); + if (diffx >= 0x1000) + return 0xFFFFFF; + + int diffy = ABS(p.y - y); + if (diffy >= 0x1000) + return 0xFFFFFF; + + return uint(diffx * diffx + diffy * diffy); + } +}; + +} // End of namespace ZVision + +#endif |