3 Copyright (C) 2013 celeron55, Perttu Ahola <celeron55@gmail.com>
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU Lesser General Public License as published by
7 the Free Software Foundation; either version 2.1 of the License, or
8 (at your option) any later version.
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU Lesser General Public License for more details.
15 You should have received a copy of the GNU Lesser General Public License along
16 with this program; if not, write to the Free Software Foundation, Inc.,
17 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
21 #include "irrlichttypes.h"
23 static inline s16 unsigned_to_signed(u16 i, u16 max_positive)
25 if (i < max_positive) {
28 return i - (max_positive * 2);
33 s64 Database::getBlockAsInteger(const v3s16 pos) const
35 return (((u64) pos.Z) << 24) +
36 (((u64) pos.Y) << 12) +
40 v3s16 Database::getIntegerAsBlock(const s64 i) const
43 pos.Z = unsigned_to_signed((i >> 24) & 0xFFF, 0x1000 / 2);
44 pos.Y = unsigned_to_signed((i >> 12) & 0xFFF, 0x1000 / 2);
45 pos.X = unsigned_to_signed((i ) & 0xFFF, 0x1000 / 2);