QTfrontend/hwmap.cpp
author unc0rr
Wed, 27 Sep 2006 20:13:29 +0000
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/*
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 * Hedgewars, a worms-like game
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 * Copyright (c) 2006 Igor Ulyanov <iulyanov@gmail.com>
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 *
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 * Distributed under the terms of the BSD-modified licence:
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 *
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 * Permission is hereby granted, free of charge, to any person obtaining a copy
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 * of this software and associated documentation files (the "Software"), to deal
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 * with the Software without restriction, including without limitation the
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 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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 * sell copies of the Software, and to permit persons to whom the Software is
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 * furnished to do so, subject to the following conditions:
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 *
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 * 1. Redistributions of source code must retain the above copyright notice,
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 *    this list of conditions and the following disclaimer.
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 * 2. Redistributions in binary form must reproduce the above copyright notice,
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 *    this list of conditions and the following disclaimer in the documentation
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 *    and/or other materials provided with the distribution.
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 * 3. The name of the author may not be used to endorse or promote products
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 *    derived from this software without specific prior written permission.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
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 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
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 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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 */
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#include "hwmap.h"
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#include "hwconsts.h"
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#include <QMessageBox>
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#include <QMutex>
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#include <QList>
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QList<HWMap*> srvsList;
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HWMap::HWMap() :
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  m_isStarted(false)
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{
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  IPCServer = new QTcpServer(this);
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  connect(IPCServer, SIGNAL(newConnection()), this, SLOT(NewConnection()));
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  IPCServer->setMaxPendingConnections(1);
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}
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HWMap::~HWMap()
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{
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}
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void HWMap::getImage(std::string seed) 
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{
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  m_seed=seed;
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  Start();
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}
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void HWMap::ClientDisconnect()
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{
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  QImage im((uchar*)(const char*)readbuffer, 256, 128, QImage::Format_Mono);
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  im.setNumColors(2);
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  IPCSocket->close();
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  IPCServer->close();
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  emit ImageReceived(im);
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  readbuffer.clear();
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  if(srvsList.size()==1) srvsList.pop_front();
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  emit isReadyNow();
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}
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void HWMap::ClientRead()
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{
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  readbuffer.append(IPCSocket->readAll());
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}
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void HWMap::SendToClientFirst()
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{
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  std::string toSend=std::string("eseed ")+m_seed;
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  char ln=(char)toSend.length();
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  IPCSocket->write(&ln, 1);
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  IPCSocket->write(toSend.c_str(), ln);
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  IPCSocket->write("\x01!", 2);
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}
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void HWMap::NewConnection()
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{
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  QTcpSocket * client = IPCServer->nextPendingConnection();
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  if(!IPCSocket) {
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    IPCServer->close();
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    IPCSocket = client;
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    connect(client, SIGNAL(disconnected()), this, SLOT(ClientDisconnect()));
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    connect(client, SIGNAL(readyRead()), this, SLOT(ClientRead()));
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    SendToClientFirst();
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  } else {
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    qWarning("2nd IPC client?!");
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    client->disconnectFromHost();
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  }
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}
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void HWMap::StartProcessError(QProcess::ProcessError error)
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{
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  QMessageBox::critical(0, tr("Error"),
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			tr("Unable to run engine: %1 (")
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			.arg(error) + bindir->absolutePath() + "/hwengine)");
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}
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void HWMap::tcpServerReady()
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{
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  disconnect(srvsList.front(), SIGNAL(isReadyNow()), *(++srvsList.begin()), SLOT(tcpServerReady()));
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  srvsList.pop_front();
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  RealStart();
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}
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void HWMap::Start()
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{
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  if(srvsList.isEmpty()) {
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    srvsList.push_back(this);
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  } else {
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    connect(srvsList.back(), SIGNAL(isReadyNow()), this, SLOT(tcpServerReady()));
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    srvsList.push_back(this);
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    return;
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  }
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  RealStart();
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}
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void HWMap::RealStart()
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{
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  IPCSocket = 0;
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  if (!IPCServer->listen(QHostAddress::LocalHost, IPC_PORT)) {
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    QMessageBox::critical(0, tr("Error"),
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			  tr("Unable to start the server: %1.")
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			  .arg(IPCServer->errorString()));
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  }
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  QProcess * process;
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  QStringList arguments;
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  process = new QProcess;
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  connect(process, SIGNAL(error(QProcess::ProcessError)), this, SLOT(StartProcessError(QProcess::ProcessError)));
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  arguments << "46631";
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  arguments << "landpreview";
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  process->start(bindir->absolutePath() + "/hwengine", arguments);
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}