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96 lines
3.5 KiB
C++
96 lines
3.5 KiB
C++
/* Emacs style mode select -*- C++ -*-
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*-----------------------------------------------------------------------------
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*
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*
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* PrBoom: a Doom port merged with LxDoom and LSDLDoom
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* based on BOOM, a modified and improved DOOM engine
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* Copyright (C) 1999 by
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* id Software, Chi Hoang, Lee Killough, Jim Flynn, Rand Phares, Ty Halderman
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* Copyright (C) 1999-2000 by
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* Jess Haas, Nicolas Kalkhof, Colin Phipps, Florian Schulze
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* Copyright 2005, 2006 by
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* Florian Schulze, Colin Phipps, Neil Stevens, Andrey Budko
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program 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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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
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* 02111-1307, USA.
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*
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* DESCRIPTION:
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* Doom Network protocol packet definitions.
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*-----------------------------------------------------------------------------*/
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#include "doomtype.h"
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#include "d_ticcmd.h"
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#include "m_swap.h"
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enum packet_type_e {
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PKT_INIT, // initial packet to server
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PKT_SETUP, // game information packet
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PKT_GO, // game has started
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PKT_TICC, // tics from client
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PKT_TICS, // tics from server
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PKT_RETRANS, // Request for retransmission
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PKT_EXTRA, // Extra info packet
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PKT_QUIT, // Player quit game
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PKT_DOWN, // Server downed
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PKT_WAD, // Wad file request
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PKT_BACKOFF, // Request for client back-off
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};
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typedef struct {
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byte checksum; // Simple checksum of the entire packet
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byte type; /* Type of packet */
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byte reserved[2]; /* Was random in prboom <=2.2.4, now 0 */
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unsigned tic; // Timestamp
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} PACKEDATTR packet_header_t;
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static inline void packet_set(packet_header_t* p, enum packet_type_e t, unsigned long tic)
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{ p->tic = doom_htonl(tic); p->type = t; p->reserved[0] = 0; p->reserved[1] = 0; }
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#ifndef GAME_OPTIONS_SIZE
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// From g_game.h
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#define GAME_OPTIONS_SIZE 64
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#endif
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struct setup_packet_s {
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byte players, yourplayer, skill, episode, level, deathmatch, complevel, ticdup, extratic;
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byte game_options[GAME_OPTIONS_SIZE];
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byte numwads;
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byte wadnames[1]; // Actually longer
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};
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/* cph - convert network byte stream to usable ticcmd_t and visa-versa
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* - the functions are functionally identical apart from parameters
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* - the void* param can be unaligned. By using void* as the parameter
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* it means gcc won't assume alignment so won't make false assumptions
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* when optimising. So I'm told.
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*/
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inline static void RawToTic(ticcmd_t* dst, const void* src)
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{
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memcpy(dst,src,sizeof *dst);
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dst->angleturn = doom_ntohs(dst->angleturn);
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dst->consistancy = doom_ntohs(dst->consistancy);
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}
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inline static void TicToRaw(void* dst, const ticcmd_t* src)
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{
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/* We have to make a copy of the source struct, then do byte swaps,
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* and fnially copy to the destination (can't do the swaps in the
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* destination, because it might not be aligned).
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*/
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ticcmd_t tmp = *src;
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tmp.angleturn = doom_ntohs(tmp.angleturn);
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tmp.consistancy = doom_ntohs(tmp.consistancy);
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memcpy(dst,&tmp,sizeof tmp);
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}
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