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
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
|
/*
* The Mana Client
* Copyright (C) 2004-2009 The Mana World Development Team
* Copyright (C) 2009-2010 The Mana Developers
*
* This file is part of The Mana Client.
*
* 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
* 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/>.
*/
#include "net/tmwa/messagein.h"
#include <SDL.h>
#include <SDL_endian.h>
namespace TmwAthena {
MessageIn::MessageIn(const char *data, unsigned int length):
Net::MessageIn(data, length)
{
// Read the message ID
mId = readInt16();
}
uint16_t MessageIn::readInt16()
{
uint16_t value = 0;
if (mPos + 2 <= mLength)
{
#if SDL_BYTEORDER == SDL_BIG_ENDIAN
uint16_t swap;
memcpy(&swap, mData + mPos, sizeof(uint16_t));
value = SDL_Swap16(swap);
#else
memcpy(&value, mData + mPos, sizeof(uint16_t));
#endif
}
mPos += 2;
return value;
}
uint32_t MessageIn::readInt32()
{
uint32_t value = 0;
if (mPos + 4 <= mLength)
{
#if SDL_BYTEORDER == SDL_BIG_ENDIAN
uint32_t swap;
memcpy(&swap, mData + mPos, sizeof(uint32_t));
value = SDL_Swap32(swap);
#else
memcpy(&value, mData + mPos, sizeof(uint32_t));
#endif
}
mPos += 4;
return value;
}
} // namespace TmwAthena
|
