blob: 15579a7f094955bee32292f11969578c2e428d91 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
|
/*
Minetest
Copyright (C) 2013 celeron55, Perttu Ahola <celeron55@gmail.com>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details.
You should have received a copy of the GNU Lesser 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.
*/
#include "database.h"
#include "irrlichttypes.h"
static inline s16 unsigned_to_signed(u16 i, u16 max_positive)
{
if (i < max_positive) {
return i;
} else {
return i - (max_positive * 2);
}
}
s64 Database::getBlockAsInteger(const v3s16 pos) const
{
return (((u64) pos.Z) << 24) +
(((u64) pos.Y) << 12) +
((u64) pos.X);
}
v3s16 Database::getIntegerAsBlock(const s64 i) const
{
v3s16 pos;
pos.Z = unsigned_to_signed((i >> 24) & 0xFFF, 0x1000 / 2);
pos.Y = unsigned_to_signed((i >> 12) & 0xFFF, 0x1000 / 2);
pos.X = unsigned_to_signed((i ) & 0xFFF, 0x1000 / 2);
return pos;
}
|
