summaryrefslogtreecommitdiff
path: root/src/net_defs.h
blob: 665d0e7b6333fd6e824434a75a1db328911bf08b (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
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
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
// Emacs style mode select   -*- C++ -*- 
//-----------------------------------------------------------------------------
//
// Copyright(C) 2005 Simon Howard
//
// 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., 59 Temple Place - Suite 330, Boston, MA
// 02111-1307, USA.
//
// DESCRIPTION:
//     Definitions for use in networking code.
//
//-----------------------------------------------------------------------------

#ifndef NET_DEFS_H
#define NET_DEFS_H 

#include "doomdef.h"
#include "doomtype.h"
#include "d_ticcmd.h"

typedef struct _net_module_s net_module_t;
typedef struct _net_packet_s net_packet_t;
typedef struct _net_addr_s net_addr_t;
typedef struct _net_context_s net_context_t;

struct _net_packet_s
{
    byte *data;
    size_t len;
    size_t alloced;
    unsigned int pos;
};

struct _net_module_s
{
    // Initialise this module for use as a client

    boolean (*InitClient)(void);

    // Initialise this module for use as a server

    boolean (*InitServer)(void);

    // Send a packet

    void (*SendPacket)(net_addr_t *addr, net_packet_t *packet);

    // Check for new packets to receive
    //
    // Returns true if packet received

    boolean (*RecvPacket)(net_addr_t **addr, net_packet_t **packet);

    // Converts an address to a string

    void (*AddrToString)(net_addr_t *addr, char *buffer, int buffer_len);

    // Free back an address when no longer in use

    void (*FreeAddress)(net_addr_t *addr);

    // Try to resolve a name to an address

    net_addr_t *(*ResolveAddress)(char *addr);
};

// net_addr_t

struct _net_addr_s
{
    net_module_t *module;
    void *handle;
};

// magic number sent when connecting to check this is a valid client

#define NET_MAGIC_NUMBER 3436803284U

// header field value indicating that the packet is a reliable packet

#define NET_RELIABLE_PACKET (1 << 15)

// packet types

typedef enum 
{
    NET_PACKET_TYPE_SYN,
    NET_PACKET_TYPE_ACK,
    NET_PACKET_TYPE_REJECTED,
    NET_PACKET_TYPE_KEEPALIVE,
    NET_PACKET_TYPE_WAITING_DATA,
    NET_PACKET_TYPE_GAMESTART,
    NET_PACKET_TYPE_GAMEDATA,
    NET_PACKET_TYPE_GAMEDATA_ACK,
    NET_PACKET_TYPE_DISCONNECT,
    NET_PACKET_TYPE_DISCONNECT_ACK,
    NET_PACKET_TYPE_RELIABLE_ACK,
    NET_PACKET_TYPE_GAMEDATA_RESEND,
    NET_PACKET_TYPE_CONSOLE_MESSAGE,
    NET_PACKET_TYPE_QUERY,
    NET_PACKET_TYPE_QUERY_RESPONSE,
} net_packet_type_t;

typedef struct 
{
    int ticdup;
    int extratics;
    int deathmatch;
    int episode;
    int nomonsters;
    int map;
    int skill;
    int gameversion;
    int lowres_turn;
    int new_sync;
    int timelimit;
    int loadgame;
} net_gamesettings_t;

#define NET_TICDIFF_FORWARD      (1 << 0)
#define NET_TICDIFF_SIDE         (1 << 1)
#define NET_TICDIFF_TURN         (1 << 2)
#define NET_TICDIFF_BUTTONS      (1 << 3)
#define NET_TICDIFF_CONSISTANCY  (1 << 4)
#define NET_TICDIFF_CHATCHAR     (1 << 5)

typedef struct
{
    unsigned int diff;
    ticcmd_t cmd;
} net_ticdiff_t;

// Complete set of ticcmds from all players

typedef struct 
{
    signed int latency;
    unsigned int seq;
    boolean playeringame[MAXPLAYERS];
    net_ticdiff_t cmds[MAXPLAYERS];
} net_full_ticcmd_t;

// Data sent in response to server queries

typedef struct
{
    char *version;
    int server_state;
    int num_players;
    int max_players;
    int gamemode;
    int gamemission;
    char *description;
} net_querydata_t;

#endif /* #ifndef NET_DEFS_H */