Copy the KDE 3.5 branch to branches/trinity for new KDE 3.5 features.

BUG:215923


git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/kdegames@1054174 283d02a7-25f6-0310-bc7c-ecb5cbfe19da

1 files changed, 710 insertions, 0 deletions

diff --git a/kbackgammon/engines/gnubg/kbggnubg.cpp b/kbackgammon/engines/gnubg/kbggnubg.cpp
new file mode 100644
index 00000000..eaaa4bdf
--- /dev/null
+++ b/kbackgammon/engines/gnubg/kbggnubg.cpp
@@ -0,0 +1,710 @@
+/* Yo Emacs, this -*- C++ -*-
+
+  Copyright (C) 1999-2001 Jens Hoefkens
+  jens@hoefkens.com
+
+  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., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+
+  $Id$
+
+*/
+
+#include "kbggnubg.moc"
+#include "kbggnubg.h"
+
+#include <kapplication.h>
+#include <kmessagebox.h>
+#include <stdlib.h>
+#include <time.h>
+#include <unistd.h>
+#include <qlayout.h>
+#include <kiconloader.h>
+#include <kstdaction.h>
+#include <qbuttongroup.h>
+#include <qcheckbox.h>
+#include <kconfig.h>
+#include <iostream>
+#include <klocale.h>
+#include <kmainwindow.h>
+#include <klineeditdlg.h>
+#include <qregexp.h>
+#include <kregexp.h>
+#include <knotifyclient.h>
+
+#include <string.h>
+#include <stdio.h>
+#include <signal.h>
+
+#include "kbgstatus.h"
+#include "kbgboard.h"
+#include "version.h"
+
+
+// == cube =====================================================================
+
+/*
+ * Double the cube for the player that can double  - asks player
+ */
+void KBgEngineGNU::cube()
+{
+	handleCommand("double");
+}
+
+/*
+ * Double the cube for player w
+ */
+void KBgEngineGNU::doubleCube(const int w)
+{
+	dummy = w; // avoid compiler warning
+	cube();
+}
+
+
+
+
+
+void KBgEngineGNU::handleLine(const QString &l)
+{
+	if (l.isEmpty())
+		return;
+
+	QString line(l);
+
+	/*
+	 * Start of a new game/match
+	 */
+	if (line.contains(QRegExp("^gnubg rolls [1-6], .* rolls [1-6]\\."))) {
+		KRegExp e("^gnubg rolls ([1-6]), .* rolls ([1-6])\\.");
+		e.match(line.latin1());
+		if (int r = strcmp(e.group(1), e.group(2)))
+			turn = (r < 0) ? uRoll : tRoll;
+	}
+
+	/*
+	 * Bug fixes for older versions of GNUBG - to be removed
+	 */
+	if (line.contains(QRegExp("^.* cannot move\\..+$"))) {
+		KRegExp e("(^.* cannot move.)(.*$)");
+		e.match(line.latin1());
+		handleLine(e.group(1));
+		handleLine(e.group(2));
+		return;
+	}
+	if (line.contains(QRegExp("^Are you sure you want to start a new game, and discard the one in progress\\?"))) {
+		KRegExp e("(^Are you sure you want to start a new game, and discard the one in progress\\? )(.+$)");
+		e.match(line.latin1());
+		handleLine(e.group(1));
+		handleLine(e.group(2));
+		return;
+	}
+
+	/*
+	 * Cube handling
+	 */
+	if (line.contains(QRegExp("^gnubg accepts and immediately redoubles to [0-9]+\\.$"))) {
+
+		// redoubles mess up the game counter "turn"
+
+		//KBgStatus st(board);
+		//st.setCube(32, BOTH);
+		//emit newState(st);
+
+	}
+	if (line.contains(QRegExp("^gnubg doubles\\.$"))) {
+
+		// TODO: we need some generic class for this. the class
+		//       can be shared between all engines
+
+#if 0
+		KBgStatus st(board);
+
+		int ret = KMessageBox::warningYesNoCancel
+			(0, i18n("gnubg doubles the cube to %1.").arg(2*st.cube(THEM)),
+			 i18n("gnubg doubles"),
+			 i18n("&Accept"), i18n("Re&double"), i18n("&Reject"), true);
+
+		switch (ret) {
+
+		case KMessageBox::Yes:
+			handleCommand("accept");
+			break;
+
+		case KMessageBox::No:
+			handleCommand("redouble");
+			break;
+
+		case KMessageBox::Cancel:
+			handleCommand("reject");
+			break;
+		}
+#endif
+	}
+
+	/*
+	 * Ignore the following messages
+	 */
+	if (line.contains(QRegExp("^TTY boards will be given in raw format"))) {
+		line = " ";
+	}
+
+	/*
+	 * Board messages
+	 */
+	if (line.contains(QRegExp("^board:"))) {
+
+		KBgStatus st(line);
+
+		/*
+		 * Do preliminary analysis of board
+		 */
+		if (st.doubled()) {
+			--turn;
+			return;
+		}
+		if (strcmp(board.latin1(),line.latin1()))
+			++turn %= maxTurn;
+		board = line;
+
+		/*
+		 * Act according to the current state in the move/roll cycle
+		 */
+		switch (turn) {
+
+		case uRoll:
+
+			if (st.cube() > 0) {
+				emit infoText(i18n("Please roll or double."));
+				KNotifyClient::event("roll or double");
+			} else {
+				emit infoText(i18n("Please roll."));
+				KNotifyClient::event("roll");
+			}
+
+			emit allowCommand(Roll, true);
+			emit allowCommand(Cube, true);
+			break;
+
+		case uMove:
+			st.setDice(THEM, 0, 0);
+			st.setDice(THEM, 1, 0);
+			emit infoText(i18n("You roll %1 and %2.").arg(st.dice(US, 0)).arg(st.dice(US, 1)));
+			switch (st.moves()) {
+			case 0:
+				// get a message
+				break;
+			case 1:
+				emit infoText(i18n("Please move 1 piece."));
+				break;
+			default:
+				emit infoText(i18n("Please move %1 pieces.").arg(st.moves()));
+				break;
+			}
+			emit allowCommand(Roll, false);
+			break;
+
+		case tRoll:
+			break;
+
+		case tMove:
+			st.setDice(US, 0, 0);
+			st.setDice(US, 1, 0);
+			emit infoText(i18n("gnubg rolls %1 and %2.").arg(st.dice(THEM, 0)).arg(st.dice(THEM, 1)));
+			if (st.moves() == 0)
+				emit infoText(i18n("gnubg cannot move."));
+
+			break;
+
+		}
+
+		/*
+		 * Bookkeeping
+		 */
+		undoCounter = 0;
+		toMove = st.moves();
+		emit allowMoving(st.turn() == US);
+		emit newState(st);
+
+		emit statText(i18n("%1 vs. %2").arg(st.player(US)).arg(st.player(THEM)));
+
+		emit allowCommand(Load, true );
+		emit allowCommand(Undo, false);
+		emit allowCommand(Redo, false);
+		emit allowCommand(Done, false);
+		return;
+	}
+
+	/*
+	 * Show the line...
+	 */
+	line.replace(QRegExp(" "), "&nbsp;");
+	if (!line.isEmpty())
+		emit infoText(line);
+}
+
+
+/*
+ * Handle textual commands. All commands are passed to gnubg.
+ */
+void  KBgEngineGNU::handleCommand(const QString& cmd)
+{
+	cmdList += cmd;
+	nextCommand();
+}
+
+
+
+// == start and init games =====================================================
+
+/*
+ * Start a new game.
+ */
+void KBgEngineGNU::newGame()
+{
+	/*
+	 * If there is a game running we warn the user first
+	 */
+	if (gameRunning && (KMessageBox::warningYesNo((QWidget *)parent(),
+						      i18n("A game is currently in progress. "
+							   "Starting a new one will terminate it."),
+						      QString::null, i18n("Start New Game"), i18n("Continue Old Game"))
+			    == KMessageBox::No))
+		return;
+
+	/*
+	 * Start new game
+	 */
+	handleCommand("new game");
+	if (gameRunning)
+		handleCommand("yes");
+
+	gameRunning = true;
+
+	emit infoText(i18n("Starting a new game."));
+}
+
+
+
+// == various slots & functions ================================================
+
+/*
+ * Quitting is fine at any time
+ */
+bool KBgEngineGNU::queryClose()
+{
+	return true;
+}
+
+/*
+ * Quitting is fine at any time
+ */
+bool KBgEngineGNU::queryExit()
+{
+	return true;
+}
+
+/*
+ * Load the last known sane state of the board
+ */
+void KBgEngineGNU::load()
+{
+	handleCommand("show board");
+}
+
+/*
+ * Store if cmd is allowed or not
+ */
+void KBgEngineGNU::setAllowed(int cmd, bool f)
+{
+	switch (cmd) {
+	case Roll:
+		rollingAllowed = f;
+		return;
+	case Undo:
+		undoPossible = f;
+		return;
+	case Cube:
+		doublePossible = f;
+		return;
+	case Done:
+		donePossible = f;
+		return;
+	}
+}
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+// == configuration handling ===================================================
+
+void KBgEngineGNU::setupOk()
+{
+	// nothing yet
+}
+
+void KBgEngineGNU::setupCancel()
+{
+	// nothing yet
+}
+
+void KBgEngineGNU::setupDefault()
+{
+	// nothing yet
+}
+
+void KBgEngineGNU::getSetupPages(KDialogBase *nb)
+{
+	/*
+	 * Main Widget
+	 */
+	QVBox *w = nb->addVBoxPage(i18n("GNU Engine"), i18n("Here you can configure the GNU backgammon engine"),
+				     kapp->iconLoader()->loadIcon(PROG_NAME "_engine", KIcon::Desktop));
+}
+
+/*
+ * Restore settings
+ */
+void KBgEngineGNU::readConfig()
+{
+	KConfig* config = kapp->config();
+	config->setGroup("gnu engine");
+
+	// nothing yet
+}
+
+/*
+ * Save the engine specific settings
+ */
+void KBgEngineGNU::saveConfig()
+{
+	KConfig* config = kapp->config();
+	config->setGroup("gnu engine");
+
+	// nothing yet
+}
+
+
+
+// *****************************************************************************
+// *****************************************************************************
+// *****************************************************************************
+// *****************************************************************************
+// *****************************************************************************
+// *****************************************************************************
+
+
+
+
+// == constructor, destructor and other ========================================
+
+/*
+ * Constructor
+ */
+KBgEngineGNU::KBgEngineGNU(QWidget *parent, QString *name, QPopupMenu *pmenu)
+	: KBgEngine(parent, name, pmenu)
+{
+	// obsolete
+	nameUS   = "US";
+	nameTHEM = "THEM";
+	random.setSeed(getpid()*time(NULL));
+
+	/*
+	 * internal statue variables
+	 */
+	rollingAllowed = undoPossible = gameRunning = donePossible = false;
+	connect(this, SIGNAL(allowCommand(int, bool)), this, SLOT(setAllowed(int, bool)));
+
+	/*
+	 * Setup of menu
+	 */
+	resAction  = new KAction(i18n("&Restart GNU Backgammon"), 0, this, SLOT(startGNU()), this);
+	resAction->setEnabled(false); resAction->plug(menu);
+
+	/*
+	 * Restore last stored settings
+	 */
+	readConfig();
+}
+
+/*
+ * Destructor. Kill the child process and that's it.
+ */
+KBgEngineGNU::~KBgEngineGNU()
+{
+	gnubg.kill();
+}
+
+
+// == start, restart, termination of gnubg =====================================
+
+/*
+ * Start the GNU Backgammon process in the background and set up
+ * some communication links.
+ */
+void KBgEngineGNU::start()
+{
+	/*
+	 * Will be started later
+	 */
+	cmdTimer = new QTimer(this);
+	connect(cmdTimer, SIGNAL(timeout()), SLOT(nextCommand()) );
+
+	emit infoText(i18n("This is experimental code which currently requires a specially "
+			   "patched version of GNU Backgammon.<br/><br/>"));
+
+	/*
+	 * Initialize variables
+	 */
+	partline = board = "";
+
+	/*
+	 * Start the process - this requires that gnubg is in the PATH
+	 */
+	gnubg << "gnubg" << "--tty";
+
+        connect(&gnubg, SIGNAL(processExited(KProcess *)), this, SLOT(gnubgExit(KProcess *)));
+        connect(&gnubg, SIGNAL(receivedStderr(KProcess *, char *, int)),
+		this, SLOT(receiveData(KProcess *, char *, int)));
+	connect(&gnubg, SIGNAL(receivedStdout(KProcess *, char *, int)),
+		this, SLOT(receiveData(KProcess *, char *, int)));
+	connect(&gnubg, SIGNAL(wroteStdin(KProcess *)), this, SLOT(wroteStdin(KProcess *)));
+
+	startGNU();
+}
+
+/*
+ * Actually start the background process.
+ */
+void KBgEngineGNU::startGNU()
+{
+
+	resAction->setEnabled(false);
+
+	if (!gnubg.start(KProcess::NotifyOnExit, KProcess::All))
+		KMessageBox::information((QWidget *)parent(),
+	                i18n("Could not start the GNU Backgammon process.\n"
+			     "Make sure the program is in your PATH and is "
+			     "called \"gnubg\".\n"
+			     "Make sure that your copy is at least version 0.10"));
+
+	/*
+	 * Set required gnubg options
+	 */
+	handleCommand("set output rawboard on");
+}
+
+/*
+ * The gnubg process has died. Stop all user activity and allow a restart.
+ */
+void KBgEngineGNU::gnubgExit(KProcess *proc)
+{
+	ct->stop();
+
+	cmdTimer->stop();
+
+	emit allowCommand(Undo, false);
+	emit allowCommand(Roll, false);
+	emit allowCommand(Done, false);
+	emit allowCommand(Cube, false);
+	emit allowCommand(Load, false);
+
+	emit allowMoving(false);
+
+	emit infoText(QString("<br/><font color=\"red\">") + i18n("The GNU Backgammon process (%1) has exited. ")
+		      .arg(proc->pid()) + "</font><br/>");
+
+	resAction->setEnabled(true);
+}
+
+
+// == communication callbacks with GNU bg ======================================
+
+/*
+ * Last command has been sent. Try to send pending ones.
+ */
+void KBgEngineGNU::wroteStdin(KProcess *proc)
+{
+	if (!proc->isRunning())
+		return;
+	nextCommand();
+}
+
+/*
+ * Try to send the next command from the command list to gnubg.
+ * If it fails, make sure we call ourselves again.
+ */
+void KBgEngineGNU::nextCommand()
+{
+	if (!gnubg.isRunning())
+		return;
+
+        for (QStringList::Iterator it = cmdList.begin(); it != cmdList.end(); ++it) {
+		QString s = (*it) + "\n";
+		if (!gnubg.writeStdin(s.latin1(), strlen(s.latin1()))) {
+			cmdTimer->start(250, true);
+			cmdList.remove(QString::null);
+			return;
+		}
+		(*it) = QString::null;
+        }
+	cmdList.remove(QString::null);
+	cmdTimer->stop();
+}
+
+/*
+ * Get data from GNU Backgammon and process them. Note that we may have
+ * to buffer the last line and wait for the closing newline...
+ */
+void KBgEngineGNU::receiveData(KProcess *proc, char *buffer, int buflen)
+{
+	if (!proc->isRunning())
+		return;
+
+	char *buf = new char[buflen+1];
+
+	memcpy(buf, buffer, buflen);
+	buf[buflen] = '\0';
+
+	QStringList l(QStringList::split('\n', buf, true));
+
+	/*
+	 * Restore partial lines from the previous time
+	 */
+	l.first() = partline + l.first();
+	partline = "";
+	if (buf[buflen-1] != '\n') {
+		partline = l.last();
+		l.remove(partline);
+	}
+
+	delete[] buf;
+
+	/*
+	 * Handle the information from gnubg
+	 */
+	for (QStringList::Iterator it = l.begin(); it != l.end(); ++it)
+		handleLine(*it);
+}
+
+
+// == moving ===================================================================
+
+/*
+ * Finish the last move - called by the timer and directly by the user
+ */
+void KBgEngineGNU::done()
+{
+	ct->stop();
+
+	emit allowMoving(false);
+
+	emit allowCommand(Done, false);
+	emit allowCommand(Undo, false);
+	emit allowCommand(Redo, false);
+
+	// Transform the string to FIBS format
+	lastmove.replace(0, 2, "move ");
+	lastmove.replace(QRegExp("\\+"), " ");
+	lastmove.replace(QRegExp("\\-"), " ");
+
+	// sent it to the server
+	handleCommand(lastmove);
+}
+
+/*
+ * Undo the last move
+ */
+void KBgEngineGNU::undo()
+{
+	ct->stop();
+
+	redoPossible = true;
+	++undoCounter;
+
+	emit allowMoving(true);
+
+	emit allowCommand(Done, false);
+	emit allowCommand(Redo, true);
+
+	emit undoMove();
+}
+
+/*
+ * Redo the last move
+ */
+void KBgEngineGNU::redo()
+{
+	--undoCounter;
+	emit redoMove();
+}
+
+/*
+ * Take the move string and make the changes on the working copy
+ * of the state.
+ */
+void KBgEngineGNU::handleMove(QString *s)
+{
+	lastmove = *s;
+
+	int index = 0;
+	QString t = s->mid(index, s->find(' ', index));
+	index += 1 + t.length();
+	int moves = t.toInt();
+
+	/*
+	 * Allow undo and possibly start the commit timer
+	 */
+	redoPossible &= ((moves < toMove) && (undoCounter > 0));
+
+	emit allowCommand(Undo, moves > 0);
+	emit allowCommand(Redo, redoPossible);
+	emit allowCommand(Done, moves == toMove);
+
+	if (moves == toMove && cl >= 0) {
+		emit allowMoving(false);
+		ct->start(cl, true);
+	}
+}
+
+
+// == dice & rolling ===========================================================
+
+/*
+ * Roll random dice for the player whose turn it is. We can ignore the
+ * value of w, since we have the turn value.
+ */
+void KBgEngineGNU::roll()
+{
+	if (turn == uRoll)
+		handleCommand("roll");
+}
+void KBgEngineGNU::rollDice(const int w)
+{
+	roll();
+}
+
+
+
+// EOF