mirror of
https://github.com/electronicarts/CnC_Remastered_Collection
synced 2024-04-29 01:42:27 +12:00
03416d24e1
Initial commit of original Tiberian Dawn and Red Alert source code converted to build as DLLs, and compatible with the release version of Command & Conquer Remastered.
249 lines
12 KiB
C++
249 lines
12 KiB
C++
//
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// Copyright 2020 Electronic Arts Inc.
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//
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// TiberianDawn.DLL and RedAlert.dll and corresponding source code is free
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// software: you can redistribute it and/or modify it under the terms of
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// the GNU General Public License as published by the Free Software Foundation,
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// either version 3 of the License, or (at your option) any later version.
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// TiberianDawn.DLL and RedAlert.dll and corresponding source code is distributed
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// in the hope that it will be useful, but with permitted additional restrictions
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// under Section 7 of the GPL. See the GNU General Public License in LICENSE.TXT
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// distributed with this program. You should have received a copy of the
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// GNU General Public License along with permitted additional restrictions
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// with this program. If not, see https://github.com/electronicarts/CnC_Remastered_Collection
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/* $Header: F:\projects\c&c\vcs\code\connect.cpv 1.9 16 Oct 1995 16:48:56 JOE_BOSTIC $ */
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/***************************************************************************
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** C O N F I D E N T I A L --- W E S T W O O D S T U D I O S **
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***************************************************************************
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* *
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* Project Name : Command & Conquer *
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* *
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* File Name : CONNECT.CPP *
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* *
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* Programmer : Bill Randolph *
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* *
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* Start Date : December 20, 1994 *
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* *
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* Last Update : May 31, 1995 [BRR] *
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*-------------------------------------------------------------------------*
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* Functions: *
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* ConnectionClass::ConnectionClass -- class constructor *
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* ConnectionClass::~ConnectionClass -- class destructor *
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* ConnectionClass::Service -- main polling routine; services packets *
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* ConnectionClass::Time -- gets current time *
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* ConnectionClass::Command_Name -- returns name for a packet command *
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* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
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#include "function.h"
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#ifdef WWLIB32_H
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#include "TIMER.H"
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#else
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#include <sys\timeb.h>
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#endif
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/*
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********************************* Globals ***********************************
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*/
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char *ConnectionClass::Commands[PACKET_COUNT] = {
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"ADATA",
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"NDATA",
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"ACK"
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};
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/***************************************************************************
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* ConnectionClass::ConnectionClass -- class constructor *
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* *
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* If either max_retries or timeout is -1, that parameter is ignored in *
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* timeout computations. If both are -1, the connection will just keep *
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* retrying forever. *
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* *
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* INPUT: *
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* numsend desired # of entries for the send queue *
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* numreceive desired # of entries for the recieve queue *
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* maxlen max length of an application packet *
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* magicnum the packet "magic number" for this connection *
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* retry_delta the time to wait between sends *
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* max_retries the max # of retries allowed for a packet *
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* (-1 means retry forever, based on this parameter) *
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* timeout the max amount of time before we give up on a packet *
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* (-1 means retry forever, based on this parameter) *
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* *
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* OUTPUT: *
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* none. *
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* *
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* WARNINGS: *
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* none. *
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* *
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* HISTORY: *
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* 12/20/1994 BR : Created. *
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*=========================================================================*/
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ConnectionClass::ConnectionClass (int maxlen, unsigned short magicnum,
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unsigned long retry_delta, unsigned long max_retries, unsigned long timeout)
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{
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/*------------------------------------------------------------------------
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Compute our maximum packet length
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------------------------------------------------------------------------*/
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MaxPacketLen = maxlen + sizeof(CommHeaderType);
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/*------------------------------------------------------------------------
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Assign the magic number
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------------------------------------------------------------------------*/
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MagicNum = magicnum;
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/*------------------------------------------------------------------------
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Initialize the retry time. This is the time that t2 - t1 must be greater
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than before a retry will occur.
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------------------------------------------------------------------------*/
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RetryDelta = retry_delta;
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/*------------------------------------------------------------------------
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Set the maximum allowable retries.
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------------------------------------------------------------------------*/
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MaxRetries = max_retries;
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/*------------------------------------------------------------------------
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Set the timeout for this connection.
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------------------------------------------------------------------------*/
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Timeout = timeout;
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/*------------------------------------------------------------------------
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Allocate the packet staging buffer. This will be used to
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------------------------------------------------------------------------*/
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PacketBuf = new char[ MaxPacketLen ];
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} /* end of ConnectionClass */
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/***************************************************************************
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* ConnectionClass::~ConnectionClass -- class destructor *
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* *
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* INPUT: *
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* none. *
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* *
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* OUTPUT: *
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* none. *
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* *
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* WARNINGS: *
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* none. *
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* *
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* HISTORY: *
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* 12/20/1994 BR : Created. *
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*=========================================================================*/
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ConnectionClass::~ConnectionClass ()
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{
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/*------------------------------------------------------------------------
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Free memory.
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------------------------------------------------------------------------*/
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delete [] PacketBuf;
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} /* end of ~ConnectionClass */
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/***************************************************************************
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* ConnectionClass::Service -- main polling routine; services packets *
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* *
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* INPUT: *
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* none. *
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* *
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* OUTPUT: *
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* 1 = OK, 0 = error (connection is broken!) *
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* *
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* WARNINGS: *
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* none. *
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* *
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* HISTORY: *
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* 12/20/1994 BR : Created. *
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*=========================================================================*/
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int ConnectionClass::Service (void)
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{
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/*------------------------------------------------------------------------
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Service the Send Queue. This [re]sends packets in the Send Queue which
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haven't been ACK'd yet, and if their retry timeout has expired, and
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updates the FirstTime, LastTime & SendCount values in the Queue entry.
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Entries that have been ACK'd should be removed.
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------------------------------------------------------------------------*/
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// if (!Service_Send_Queue())
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// return(0);
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/*------------------------------------------------------------------------
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Service the Receive Queue. This sends ACKs for packets that haven't
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been ACK'd yet. Entries that the app has read, and have been ACK'd,
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should be removed.
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------------------------------------------------------------------------*/
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// if (!Service_Receive_Queue())
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// return(0);
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// return(1);
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if ( Service_Send_Queue() && Service_Receive_Queue() ) {
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return(1);
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} else {
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return(0);
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}
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} /* end of Service */
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// ST = 12/17/2018 5:44PM
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#ifndef TickCount
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extern TimerClass TickCount;
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#endif
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/***************************************************************************
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* ConnectionClass::Time -- gets current time *
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* *
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* INPUT: *
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* *
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* OUTPUT: *
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* none. *
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* *
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* WARNINGS: *
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* none. *
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* *
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* HISTORY: *
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* 12/20/1994 BR : Created. *
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*=========================================================================*/
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unsigned long ConnectionClass::Time (void)
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{
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#ifdef WWLIB32_H
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return(TickCount.Time()); // Westwood Library time
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#else
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static struct timeb mytime; // DOS time
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unsigned long msec;
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ftime(&mytime);
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msec = (unsigned long)mytime.time * 1000L + (unsigned long)mytime.millitm;
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return((msec / 100) * 6);
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#endif
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} /* end of Time */
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/***************************************************************************
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* ConnectionClass::Command_Name -- returns name for given packet command *
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* *
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* INPUT: *
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* command packet Command value to get name for *
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* *
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* OUTPUT: *
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* ptr to command name, NULL if invalid *
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* *
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* WARNINGS: *
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* none. *
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* *
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* HISTORY: *
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* 05/31/1995 BRR : Created. *
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*=========================================================================*/
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char *ConnectionClass::Command_Name(int command)
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{
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if (command >= 0 && command < PACKET_COUNT) {
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return(Commands[command]);
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} else {
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return(NULL);
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}
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}
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