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, 310 insertions, 0 deletions

diff --git a/kbackgammon/kbgstatus.h b/kbackgammon/kbgstatus.h
new file mode 100644
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+/*
+  Copyright (C) 2001 Jens Hoefkens
+  [email protected]
+  
+  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.
+
+  $Id$
+  
+*/
+
+#ifndef KBGSTATUS_H 
+#define KBGSTATUS_H 
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif 
+
+#include <qobject.h>
+
+
+/**
+ * This is a the fundamental class of the KBg* hierarchy. It represents 
+ * the state of backgammon games.
+ *
+ * The game states can be initialized in a variety of information and
+ * are meant to be passed to the board. In addition to that, the class
+ * has several utility functions that are helpful for engines that
+ * maintain a local state.
+ *
+ * @short The backgammon status object
+ * @author Jens Hoefkens <[email protected]>
+ * @version $Id$
+ */
+class KBgStatus : public QObject
+{
+
+	Q_OBJECT
+
+ public:
+
+	/**
+	 * These numbers are used to distinguish the two players. The
+	 * notion of US and THEM is a leftover from ancient times.
+	 */
+	enum {NONE = -1, US = 0, THEM = 1, BOTH = 2};
+	
+	/**
+	 * The names are just to distinguish the two different colors.
+	 */
+	enum {Black = -1, White = +1};
+
+	/**
+	 * The default constructor initializes the status to an "empty" 
+	 * state. The board and dice are empty and the cube shows 1.
+	 */
+	KBgStatus();
+
+	/**
+	 * Constructor from a FIBS rawboard string
+	 */
+	KBgStatus(const QString &rawboard);
+
+	/**
+	 * Copy constructor
+	 */
+	KBgStatus(const KBgStatus &rhs);
+
+	/**
+	 * Assignment operator
+	 */
+	KBgStatus& operator=(const KBgStatus &rhs);
+	
+	/**
+	 * Destructor
+	 */
+	virtual ~KBgStatus();
+
+
+	/*
+	 * The absolute value of the return value is the number of
+	 * checkers on the i-th field (or zero if i is out of
+	 * bounds). If the return value has the same sign as the
+	 * current color of US, it belongs to US, otherwise it belongs
+	 * to THEM.
+	 */
+	int board(const int &i) const;
+
+	/*
+	 * The absolute value of the return value is the number of
+	 * checkers on the home of player w (or zero if i is out of
+	 * bounds). If the return value has the same sign as the
+	 * current color of US, it belongs to US, otherwise it belongs
+	 * to THEM.
+	 *
+	 * The encoding of the color is slighly redundant. See also board(...).
+	 */
+	int home(const int &w = US) const;
+	
+	/*
+	 * The absolute value of the return value is the number of
+	 * checkers on the bar of player w (or zero if i is out of
+	 * bounds). If the return value has the same sign as the
+	 * current color of US, it belongs to US, otherwise it belongs
+	 * to THEM.
+	 *
+	 * The encoding of the color is slighly redundant. See also board(...).
+	 */
+	int bar(const int &w = US) const;
+		
+	/*
+	 * Return the current color of player w. If w is invalid, the
+	 * color of US is returned. The return value will be either
+	 * Black or White.
+	 */
+	int color(const int& w = US) const;
+
+	/*
+	 * Returns the current direction of the game. It is -1 if US
+	 * plays from 24 to 1 and +1 if US plays from 1 to 24.
+	 */
+	int direction() const;
+
+	/*
+	 * Returns the n-th dice of player w. If w is invalid or if n
+	 * is out of bounds, return zero. Also, if the dice haven't
+	 * been set, zero is returned.
+	 */
+	int dice(const int &w, const int &n) const;
+
+	/*
+	 * Returns the value of the cube. If w can double, the return
+	 * value is positive, if w may not double, the negative value
+	 * of the cube is returned. If w is not legal, zero is
+	 * returned.
+	 */
+	int cube(const int &w = US) const;
+
+	/*
+	 * Return the points of w in th ecurrent game. Negative values
+	 * indicate that either w was not a legal player ID or that
+	 * the engine doesn't have any information on points.
+	 */
+	int points(const int &w) const;
+
+	/*
+	 * Return the name of player w. If w is out of bounds or if
+	 * the player names have not been set, QString::null is
+	 * returned.
+	 */
+	QString player(const int &w = US) const;
+
+	/*
+	 * Return the length of the game. Negative values should be used to
+	 * indicate that the game is over. Zero indicates that the game is
+	 * unlimited.
+	 */
+	int length() const;
+
+	/*
+	 * Return whose turn it is. The possible return values are US,
+	 * THEM, and NONE.
+	 */
+	int turn() const;
+
+	/*
+	 * Return true if the cube has just been offered. If this
+	 * information is not available or if this is not the case,
+	 * return false.
+	 */
+	bool doubled() const;
+
+	/*
+	 * Set the number of checkers of player w on the i-th field to
+	 * the absolute value of v. If either i or w are out of bound,
+	 * nothing is done.
+	 *
+	 * Internally, positive numbers are stored for US and negative
+	 * ones for THEM. While this coding is redundant, it is
+	 * consistent with the storing of board positions.
+	 */
+	void setBoard(const int &i, const int &w, const int &v);
+
+	/*
+	 * Set the number of checkers on the home of player w to the
+	 * absolute value of v. If w is out of bound, nothing is done.
+	 *
+	 * Internally, positive numbers are stored for US and negative
+	 * ones for THEM. While this coding is redundant, it is
+	 * consistent with the storing of board positions. See also
+	 * setBoard(...).
+	 */
+	void setHome(const int &w = US, const int &v = 0);
+
+	/*
+	 * Set the number of checkers on the bar of player w to the
+	 * absolute value of v. If w is out of bound, nothing is done.
+	 *
+	 * Internally, positive numbers are stored for US and negative
+	 * ones for THEM. While this coding is redundant, it is
+	 * consistent with the storing of board positions. See also
+	 * setBoard(...).
+	 */
+	void setBar(const int &w = US, const int &v = 0);
+
+	/*
+	 * This function sets the color of player w to c. Negative
+	 * values of c translate to Black for US (and White for
+	 * THEM). Non-negative values for c translate to White for US
+	 * and Black for THEM.
+	 */
+	void setColor(const int& col, const int& w = US);
+
+	/*
+	 * Set the direction of the game. If dir is negative, US plays
+	 * from 24 to 1. If dir is positive, US plays from 1 to 24.
+	 */
+	void setDirection(const int &dir);
+
+	/*
+	 * Set the n-th dice of player w to v. Nothing is done if w is
+	 * invalid or if n is out of bounds. If v is invalid, the
+	 * value zero is assigned (i.e., the dice is invalidated).
+	 */
+	void setDice(const int &w, const int &n, const int &v);
+
+	/*
+	 * Set the cube to c us indicates if US can double, them
+	 * indicates if THEM can double.
+	 *
+	 * This function is depreciated.
+	 */
+	void setCube(const int &c, const bool &us, const bool &them);
+
+	/*
+	 * Set the cube to c, which must be a legal value (i.e., a
+	 * power of 2). w indicates who can double. Legal values are
+	 * NONE, US, THEM, and BOTH.
+	 */
+	void setCube(const int &c, const int &w);
+
+	/*
+	 * Set the points of w in the current game to p. Nothing is
+	 * done if w is illegal.
+	 */
+	void setPoints(const int &w, const int &p);
+
+	/*
+	 * Set the name of player w to name. If w is out of bound,
+	 * nothing is done.
+	 */
+	void setPlayer(const int &w, const QString &name);
+
+	/*
+	 * Set the length of the game. Negative values should be used to
+	 * indicate that the game is over. Zero indicates that the game 
+	 * is unlimited.
+	 */
+	void setLength(const int &l);
+
+	/*
+	 * Set the turn to w. Legal values for w are US, THEM, and
+	 * NONE (which should indicate that the game is over).
+	 */
+	void setTurn(const int &w);
+
+	/*
+	 * Return the number of possible moves basesd on the current
+	 * dice, checkers, etc.
+	 */
+	int moves() const;
+
+ private:
+
+	/*
+	 * Determine if there is any possibility to move a steps
+	 * anywhere starting from start or later into direction 
+	 * dir in the game given by sc.
+	 */
+	bool movePossible(KBgStatus &sc, int a, int start, int dir) const;
+
+	/*
+	 * Copy constr. and assignment share a lot of code.
+	 */
+	void copy(const KBgStatus &rhs);
+
+	/*
+	 * Private variables with self-expalanatory names. 
+	 */
+	QString player_[2];
+
+	int board_[26], home_[2], bar_[2], dice_[2][2], points_[2];
+	int color_, direction_, cube_, length_, turn_;
+	int doubled_;
+
+	bool maydouble_[2];
+};
+  
+#endif // KBGSTATUS_H