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
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
|
/*
* The ManaPlus Client
* Copyright (C) 2004-2009 The Mana World Development Team
* Copyright (C) 2009-2010 The Mana Developers
* Copyright (C) 2011-2012 The ManaPlus Developers
*
* This file is part of The ManaPlus 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/messageout.h"
#include "net/packetcounters.h"
#include "net/tmwa/network.h"
#include "logger.h"
#include <SDL.h>
#include <SDL_endian.h>
#include <cstring>
#include <string>
#include "debug.h"
namespace TmwAthena
{
MessageOut::MessageOut(short id):
Net::MessageOut(id)
{
mNetwork = TmwAthena::Network::instance();
mNetwork->fixSendBuffer();
mData = mNetwork->mOutBuffer + mNetwork->mOutSize;
writeInt16(id);
}
void MessageOut::expand(size_t bytes)
{
mNetwork->mOutSize += static_cast<unsigned>(bytes);
PacketCounters::incOutBytes(static_cast<int>(bytes));
}
void MessageOut::writeInt16(int16_t value)
{
DEBUGLOG("writeInt16: " + toString(static_cast<int>(value)));
expand(2);
#if SDL_BYTEORDER == SDL_BIG_ENDIAN
int16_t swap = SDL_Swap16(value);
memcpy(mData + mPos, &swap, sizeof(int16_t));
#else
memcpy(mData + mPos, &value, sizeof(int16_t));
#endif
mPos += 2;
PacketCounters::incOutBytes(2);
}
void MessageOut::writeInt32(int32_t value)
{
DEBUGLOG("writeInt32: " + toString(value));
expand(4);
#if SDL_BYTEORDER == SDL_BIG_ENDIAN
int32_t swap = SDL_Swap32(value);
memcpy(mData + mPos, &swap, sizeof(int32_t));
#else
memcpy(mData + mPos, &value, sizeof(int32_t));
#endif
mPos += 4;
PacketCounters::incOutBytes(4);
}
#define LOBYTE(w) (static_cast<unsigned char>(w))
#define HIBYTE(w) (static_cast<unsigned char>(( \
static_cast<unsigned short>(w)) >> 8))
void MessageOut::writeCoordinates(unsigned short x, unsigned short y,
unsigned char direction)
{
DEBUGLOG(strprintf("writeCoordinates: %u,%u %u",
static_cast<unsigned>(x), static_cast<unsigned>(y),
static_cast<unsigned>(direction)));
char *const data = mData + mPos;
mNetwork->mOutSize += 3;
mPos += 3;
short temp;
temp = x;
temp <<= 6;
data[0] = 0;
data[1] = 1;
data[2] = 2;
data[0] = HIBYTE(temp);
data[1] = static_cast<unsigned char>(temp);
temp = y;
temp <<= 4;
data[1] |= HIBYTE(temp);
data[2] = LOBYTE(temp);
// Translate direction to eAthena format
switch (direction)
{
case 1:
direction = 0;
break;
case 3:
direction = 1;
break;
case 2:
direction = 2;
break;
case 6:
direction = 3;
break;
case 4:
direction = 4;
break;
case 12:
direction = 5;
break;
case 8:
direction = 6;
break;
case 9:
direction = 7;
break;
default:
// OOPSIE! Impossible or unknown
direction = static_cast<unsigned char>(-1);
}
data[2] |= direction;
PacketCounters::incOutBytes(3);
}
} // namespace TmwAthena
|
