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123 lines
3 KiB
C++
123 lines
3 KiB
C++
// Emacs style mode select -*- C++ -*-
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//-----------------------------------------------------------------------------
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//
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// $Id:$
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//
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// Copyright (C) 1993-1996 by id Software, Inc.
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//
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// This source is available for distribution and/or modification
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// only under the terms of the DOOM Source Code License as
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// published by id Software. All rights reserved.
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//
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// The source is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// FITNESS FOR A PARTICULAR PURPOSE. See the DOOM Source Code License
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// for more details.
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//
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// DESCRIPTION:
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// Networking stuff.
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//
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//-----------------------------------------------------------------------------
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#ifndef __D_NET__
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#define __D_NET__
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#include "d_player.h"
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//
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// Network play related stuff.
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// There is a data struct that stores network
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// communication related stuff, and another
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// one that defines the actual packets to
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// be transmitted.
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//
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#define DOOMCOM_ID 0x12345678l
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#define MAXNETNODES 8 // max computers in a game
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#define BACKUPTICS 12 // number of tics to remember
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#ifdef DJGPP
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// The DOS drivers provide a pretty skimpy buffer.
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// Should be enough, anyway.
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#define MAX_MSGLEN (BACKUPTICS*10)
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#else
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#define MAX_MSGLEN 1400
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#endif
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#define CMD_SEND 1
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#define CMD_GET 2
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//
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// Network packet data.
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//
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typedef struct
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{
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unsigned checksum; // high bit is retransmit request
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byte retransmitfrom; // only valid if NCMD_RETRANSMIT
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byte starttic;
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byte player, numtics;
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byte cmds[MAX_MSGLEN-8];
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} doomdata_t;
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typedef struct
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{
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long id; // should be DOOMCOM_ID
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short intnum; // DOOM executes an int to execute commands
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// communication between DOOM and the driver
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short command; // CMD_SEND or CMD_GET
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short remotenode; // dest for send, set by get (-1 = no packet).
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short datalength; // bytes in doomdata to be sent
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// info common to all nodes
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short numnodes; // console is always node 0.
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short ticdup; // 1 = no duplication, 2-5 = dup for slow nets
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short extratics; // 1 = send a backup tic in every packet
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#ifdef DJGPP
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short pad[5]; // keep things aligned for DOS drivers
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#endif
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// info specific to this node
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short consoleplayer;
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short numplayers;
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#ifdef DJGPP
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short angleoffset; // does not work, but needed to preserve
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short drone; // alignment for DOS drivers
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#endif
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// packet data to be sent
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doomdata_t data;
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} doomcom_t;
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// Create any new ticcmds and broadcast to other players.
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void NetUpdate (void);
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// Broadcasts special packets to other players
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// to notify of game exit
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void STACK_ARGS D_QuitNetGame (void);
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//? how many ticks to run?
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void TryRunTics (void);
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// [RH] Functions for making and using special "ticcmds"
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void Net_NewMakeTic (void);
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void Net_WriteByte (byte);
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void Net_WriteWord (short);
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void Net_WriteLong (int);
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void Net_WriteString (const char *);
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void Net_DoCommand (int type, byte **stream, int player);
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#endif
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//-----------------------------------------------------------------------------
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//
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// $Log:$
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//
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//-----------------------------------------------------------------------------
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