|
|
|
/* Yo Emacs, this -*- C++ -*-
|
|
|
|
|
|
|
|
Copyright (C) 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.
|
|
|
|
|
|
|
|
*/
|
|
|
|
|
|
|
|
#include "kbgstatus.h"
|
|
|
|
#include "kbgstatus.moc"
|
|
|
|
|
|
|
|
#include <stdlib.h>
|
|
|
|
#include <stdio.h>
|
|
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Parse a rawboard description from FIBS and initialize members.
|
|
|
|
*/
|
|
|
|
KBgStatus::KBgStatus(const TQString &rawboard)
|
|
|
|
{
|
|
|
|
/*
|
|
|
|
* This is the format string from hell...
|
|
|
|
*/
|
|
|
|
const char *format = ("%*[^:]%*[:]%99[^:]%*[:]%99[^:]%*[:]%i%*[:]%i%*[:]%i%*[:]"
|
|
|
|
"%i%*[:]%i%*[:]%i%*[:]%i%*[:]%i%*[:]%i%*[:]%i%*[:]%i%*[:]%i%*[:]"
|
|
|
|
"%i%*[:]%i%*[:]%i%*[:]%i%*[:]%i%*[:]%i%*[:]%i%*[:]%i%*[:]%i%*[:]"
|
|
|
|
"%i%*[:]%i%*[:]%i%*[:]%i%*[:]%i%*[:]%i%*[:]%i%*[:]%i%*[:]"
|
|
|
|
"%i%*[:]"
|
|
|
|
"%i%*[:]%i%*[:]%i%*[:]%i%*[:]%i%*[:]%i%*[:]%i%*[:]%i%*[:]%i%*[:]"
|
|
|
|
"%i%*[:]%i%*[:]%i%*[:]%i%*[:]%i%*[:]%i%*[:]%i%*[:]%i%*[:]%i%*[:]"
|
|
|
|
"%i%*[:]%i%*[:]");
|
|
|
|
|
|
|
|
char opponent[100], player[100];
|
|
|
|
|
|
|
|
TQString cap;
|
|
|
|
|
|
|
|
int board[26], ldice[2][2], maydouble[2], scratch[4], onhome[2], onbar[2];
|
|
|
|
int points[2];
|
|
|
|
int tomove, lturn, color, cube, direction, redoubles, bar, home, length;
|
|
|
|
|
|
|
|
// split the incoming line at colons - latin1() is fine, since the string comes from FIBS.
|
|
|
|
sscanf (rawboard.latin1(), format,
|
|
|
|
player, opponent,
|
|
|
|
&length,
|
|
|
|
&points[0], &points[1],
|
|
|
|
&board[ 0], &board[ 1], &board[ 2], &board[ 3], &board[ 4], &board[ 5],
|
|
|
|
&board[ 6], &board[ 7], &board[ 8], &board[ 9], &board[10], &board[11],
|
|
|
|
&board[12], &board[13], &board[14], &board[15], &board[16], &board[17],
|
|
|
|
&board[18], &board[19], &board[20], &board[21], &board[22], &board[23],
|
|
|
|
&board[24], &board[25],
|
|
|
|
<urn,
|
|
|
|
&ldice[US ][0], &ldice[US ][1], &ldice[THEM][0], &ldice[THEM][1],
|
|
|
|
&cube,
|
|
|
|
&maydouble[US], &maydouble[THEM],
|
|
|
|
&doubled_,
|
|
|
|
&color,
|
|
|
|
&direction,
|
|
|
|
&home, &bar,
|
|
|
|
&onhome[US], &onhome[THEM], // on home
|
|
|
|
&onbar[US], &onbar[THEM], // on bar
|
|
|
|
&tomove,
|
|
|
|
&scratch[2], &scratch[3], // forced move & did crawford
|
|
|
|
&redoubles);
|
|
|
|
|
|
|
|
player_[US] = player;
|
|
|
|
player_[THEM] = opponent;
|
|
|
|
|
|
|
|
setCube(cube, maydouble[US], maydouble[THEM]);
|
|
|
|
setDirection(direction);
|
|
|
|
setColor(color);
|
|
|
|
for (int i = 1; i < 25; i++) {
|
|
|
|
if (board[i] == 0 || color == board[i]/abs(board[i]))
|
|
|
|
setBoard(i, US, abs(board[i]));
|
|
|
|
else
|
|
|
|
setBoard(i, THEM, abs(board[i]));
|
|
|
|
}
|
|
|
|
setDice(US , 0, ldice[US ][0]);
|
|
|
|
setDice(US , 1, ldice[US ][1]);
|
|
|
|
setDice(THEM, 0, ldice[THEM][0]);
|
|
|
|
setDice(THEM, 1, ldice[THEM][1]);
|
|
|
|
|
|
|
|
setHome(US, onhome[US ]);
|
|
|
|
setHome(THEM, onhome[THEM]);
|
|
|
|
|
|
|
|
setBar(US, board[ bar]);
|
|
|
|
setBar(THEM, board[25-bar]);
|
|
|
|
|
|
|
|
setPoints(US, points[0]);
|
|
|
|
setPoints(THEM, points[1]);
|
|
|
|
|
|
|
|
if (lturn == 0)
|
|
|
|
setLength(-1);
|
|
|
|
else
|
|
|
|
setLength(length);
|
|
|
|
|
|
|
|
int t = lturn*color;
|
|
|
|
if (t > 0) setTurn(US);
|
|
|
|
if (t < 0) setTurn(THEM);
|
|
|
|
if (t == 0) setTurn(NONE);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Constructor initializes the status to an empty board with cube one
|
|
|
|
* and empty dice.
|
|
|
|
*/
|
|
|
|
KBgStatus::KBgStatus()
|
|
|
|
: TQObject()
|
|
|
|
{
|
|
|
|
/*
|
|
|
|
* Initialize members
|
|
|
|
*/
|
|
|
|
for (int i = 0; i < 26; ++i)
|
|
|
|
setBoard(i, US, 0);
|
|
|
|
|
|
|
|
for (int i = US; i <= THEM; i++) {
|
|
|
|
setDice (i, 0, 0);
|
|
|
|
setDice (i, 1, 0);
|
|
|
|
setHome (i, 0);
|
|
|
|
setBar (i, 0);
|
|
|
|
setPoints(i, -1);
|
|
|
|
setPlayer(i, TQString());
|
|
|
|
}
|
|
|
|
setColor(White, US);
|
|
|
|
setCube(1, BOTH); // also initializes maydouble
|
|
|
|
setDirection(1);
|
|
|
|
setLength(-1);
|
|
|
|
setTurn(NONE);
|
|
|
|
|
|
|
|
// initialize members without assignment functions
|
|
|
|
doubled_ = 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Copy constructor calls private utility function.
|
|
|
|
*/
|
|
|
|
KBgStatus::KBgStatus(const KBgStatus &rhs)
|
|
|
|
: TQObject()
|
|
|
|
{
|
|
|
|
copy(rhs);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Destructor
|
|
|
|
*/
|
|
|
|
KBgStatus::~KBgStatus()
|
|
|
|
{
|
|
|
|
// nothing to do
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Assignment operator shares a lot of code with the copy
|
|
|
|
* constructor.
|
|
|
|
*/
|
|
|
|
KBgStatus& KBgStatus::operator=(const KBgStatus &rhs)
|
|
|
|
{
|
|
|
|
if (this == &rhs) return *this;
|
|
|
|
copy(rhs);
|
|
|
|
return *this;
|
|
|
|
}
|
|
|
|
|
|
|
|
void KBgStatus::copy(const KBgStatus &rhs)
|
|
|
|
{
|
|
|
|
for (int i = 0; i < 26; i++)
|
|
|
|
board_[i] = rhs.board_[i];
|
|
|
|
|
|
|
|
for (int i = US; i <= THEM; i++) {
|
|
|
|
|
|
|
|
home_[i] = rhs.home_[i];
|
|
|
|
bar_ [i] = rhs.bar_ [i];
|
|
|
|
dice_[i][0] = rhs.dice_[i][0];
|
|
|
|
dice_[i][1] = rhs.dice_[i][1];
|
|
|
|
|
|
|
|
maydouble_[i] = rhs.maydouble_[i];
|
|
|
|
player_ [i] = rhs.player_ [i];
|
|
|
|
points_ [i] = rhs.points_ [i];
|
|
|
|
}
|
|
|
|
|
|
|
|
cube_ = rhs.cube_;
|
|
|
|
direction_ = rhs.direction_;
|
|
|
|
color_ = rhs.color_;
|
|
|
|
turn_ = rhs.turn_;
|
|
|
|
doubled_ = rhs.doubled_;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Access functions
|
|
|
|
*/
|
|
|
|
int KBgStatus::board(const int &i) const
|
|
|
|
{
|
|
|
|
return ((0 < i && i < 25) ? color_*board_[i] : 0);
|
|
|
|
}
|
|
|
|
|
|
|
|
int KBgStatus::home(const int &w) const
|
|
|
|
{
|
|
|
|
return ((w == US || w == THEM) ? color_*home_[w] : 0);
|
|
|
|
}
|
|
|
|
|
|
|
|
int KBgStatus::bar(const int &w) const
|
|
|
|
{
|
|
|
|
return ((w == US || w == THEM) ? color_*bar_[w] : 0);
|
|
|
|
}
|
|
|
|
|
|
|
|
int KBgStatus::color(const int &w) const
|
|
|
|
{
|
|
|
|
return ((w == THEM) ? -color_ : color_);
|
|
|
|
}
|
|
|
|
|
|
|
|
int KBgStatus::direction() const
|
|
|
|
{
|
|
|
|
return direction_;
|
|
|
|
}
|
|
|
|
|
|
|
|
int KBgStatus::dice(const int &w, const int &n) const
|
|
|
|
{
|
|
|
|
if ((w == US || w == THEM) && (n == 0 || n == 1))
|
|
|
|
return dice_[w][n];
|
|
|
|
else
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
int KBgStatus::cube(const int &w) const
|
|
|
|
{
|
|
|
|
if (w == US || w == THEM)
|
|
|
|
return ((maydouble_[w]) ? cube_ : -cube_);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
int KBgStatus::points(const int& w) const
|
|
|
|
{
|
|
|
|
return ((w == US || w == THEM) ? points_[w] : -1);
|
|
|
|
}
|
|
|
|
|
|
|
|
TQString KBgStatus::player(const int &w) const
|
|
|
|
{
|
|
|
|
return ((w == US || w == THEM) ? player_[w] : TQString());
|
|
|
|
}
|
|
|
|
|
|
|
|
int KBgStatus::length() const
|
|
|
|
{
|
|
|
|
return length_;
|
|
|
|
}
|
|
|
|
|
|
|
|
int KBgStatus::turn() const
|
|
|
|
{
|
|
|
|
return turn_;
|
|
|
|
}
|
|
|
|
|
|
|
|
bool KBgStatus::doubled() const
|
|
|
|
{
|
|
|
|
return doubled_;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Assignment functions
|
|
|
|
*/
|
|
|
|
void KBgStatus::setBoard(const int &i, const int &w, const int &v)
|
|
|
|
{
|
|
|
|
if (0 < i && i < 25) {
|
|
|
|
if (w == US)
|
|
|
|
board_[i] = abs(v);
|
|
|
|
else if (w == THEM)
|
|
|
|
board_[i] = -abs(v);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
void KBgStatus::setHome(const int &w, const int &v)
|
|
|
|
{
|
|
|
|
if (w == US)
|
|
|
|
home_[w] = abs(v);
|
|
|
|
else if (w == THEM)
|
|
|
|
home_[w] = -abs(v);
|
|
|
|
}
|
|
|
|
|
|
|
|
void KBgStatus::setBar(const int& w, const int& v)
|
|
|
|
{
|
|
|
|
if (w == US)
|
|
|
|
bar_[w] = abs(v);
|
|
|
|
else if (w == THEM)
|
|
|
|
bar_[w] = -abs(v);
|
|
|
|
}
|
|
|
|
|
|
|
|
void KBgStatus::setColor(const int &c, const int &w)
|
|
|
|
{
|
|
|
|
if (w == US)
|
|
|
|
color_ = ((c < 0) ? Black : White);
|
|
|
|
else if (w == THEM)
|
|
|
|
color_ = ((c < 0) ? White : Black);
|
|
|
|
}
|
|
|
|
|
|
|
|
void KBgStatus::setDirection(const int &dir)
|
|
|
|
{
|
|
|
|
direction_ = ((dir < 0) ? -1 : +1);
|
|
|
|
}
|
|
|
|
|
|
|
|
void KBgStatus::setDice(const int &w, const int &n, const int &v)
|
|
|
|
{
|
|
|
|
if ((w == US || w == THEM) && (n == 0 || n == 1)) {
|
|
|
|
if (0 <= v && v <= 6)
|
|
|
|
dice_[w][n] = v;
|
|
|
|
else
|
|
|
|
dice_[w][n] = 0;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
void KBgStatus::setCube(const int &c, const bool &us, const bool &them)
|
|
|
|
{
|
|
|
|
int w = NONE;
|
|
|
|
if (us) w = US;
|
|
|
|
if (them) w = THEM;
|
|
|
|
if (us && them) w = BOTH;
|
|
|
|
setCube(c, w);
|
|
|
|
}
|
|
|
|
|
|
|
|
void KBgStatus::setCube(const int &c, const int &w)
|
|
|
|
{
|
|
|
|
// assume that int has at least 32 bits...
|
|
|
|
for (int i = 0; i < 31; i++) {
|
|
|
|
if (1<<i == (cube_ = c)) break;
|
|
|
|
cube_ = 0;
|
|
|
|
}
|
|
|
|
maydouble_[US ] = (w == US || w == BOTH);
|
|
|
|
maydouble_[THEM] = (w == THEM || w == BOTH);
|
|
|
|
}
|
|
|
|
|
|
|
|
void KBgStatus::setPoints(const int &w, const int &p)
|
|
|
|
{
|
|
|
|
if (w == US || w == THEM)
|
|
|
|
points_[w] = p;
|
|
|
|
}
|
|
|
|
|
|
|
|
void KBgStatus::setPlayer(const int &w, const TQString &name)
|
|
|
|
{
|
|
|
|
if (w == US || w == THEM)
|
|
|
|
player_[w] = name;
|
|
|
|
}
|
|
|
|
|
|
|
|
void KBgStatus::setLength(const int &l)
|
|
|
|
{
|
|
|
|
length_ = l;
|
|
|
|
}
|
|
|
|
|
|
|
|
void KBgStatus::setTurn(const int &w)
|
|
|
|
{
|
|
|
|
if (w == US || w == THEM || w == BOTH)
|
|
|
|
turn_ = w;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Utility functions
|
|
|
|
*/
|
|
|
|
int KBgStatus::moves() const
|
|
|
|
{
|
|
|
|
int start, dir;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Return an error if it isn't anybodies turn.
|
|
|
|
*/
|
|
|
|
if ((turn() != US) && (turn() != THEM))
|
|
|
|
return -1;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Determine tha direction of the current move
|
|
|
|
*/
|
|
|
|
if ((turn() == US && direction() < 0) || (turn() == THEM && direction() > 0)) {
|
|
|
|
start = 25;
|
|
|
|
dir = -1;
|
|
|
|
} else {
|
|
|
|
start = 0;
|
|
|
|
dir = 1;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Get the current dice transferred into the move[] array. The
|
|
|
|
* final zero is a marker
|
|
|
|
*/
|
|
|
|
int move[5] = {0, 0, 0, 0, 0};
|
|
|
|
move[0] = dice(turn(), 0);
|
|
|
|
move[1] = dice(turn(), 1);
|
|
|
|
if (move[0] == move[1]) {
|
|
|
|
move[3] = move[2] = move[0];
|
|
|
|
// saves some work further down
|
|
|
|
if (move[0] == 0)
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
bool doubledice = (move[3] != 0);
|
|
|
|
int count = 4;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Get a copy of ourselves. That way we can mess around with
|
|
|
|
* the internals of the game.
|
|
|
|
*/
|
|
|
|
KBgStatus sc(*this);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Start with getting all checkers off the bar
|
|
|
|
*/
|
|
|
|
while (count > 0 && sc.bar(turn()) != 0) {
|
|
|
|
if (move[--count] != 0) {
|
|
|
|
if (color(turn())*sc.board(start+dir*move[count]) >= -1) {
|
|
|
|
sc.setBar(turn(), abs(sc.bar(turn()))-1);
|
|
|
|
sc.setBoard(start + dir*move[count], turn(), 1);
|
|
|
|
move[count] = 0;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Collect remaining moves in the beginning of the move array
|
|
|
|
*/
|
|
|
|
int j = 0;
|
|
|
|
for (int i = 0; i < 4; i++) {
|
|
|
|
if ((move[j] = move[i]))
|
|
|
|
++j;
|
|
|
|
if (i > j) move[i] = 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Find number of remaining moves
|
|
|
|
*/
|
|
|
|
int moves = 0;
|
|
|
|
move[4] = 0;
|
|
|
|
while (move[moves])
|
|
|
|
++moves;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Done or no more moves because the bar is not empty
|
|
|
|
*/
|
|
|
|
if (sc.bar(turn()) != 0 || move[0] == 0)
|
|
|
|
return (move[3] ? 4 - moves : 2 - moves);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Try to find possible moves on the board
|
|
|
|
*/
|
|
|
|
if (moves == 1 || move[0] == move[1]) {
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Order doesn't matter, all moves are equal
|
|
|
|
*/
|
|
|
|
while (--moves >= 0 && movePossible(sc, move[moves], start, dir));
|
|
|
|
moves++;
|
|
|
|
return (doubledice ? 4 - moves : 2 - moves);
|
|
|
|
|
|
|
|
} else {
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Order does matter; try both ways.
|
|
|
|
*/
|
|
|
|
moves = 0;
|
|
|
|
for (int i = 0; i < 25; i++) {
|
|
|
|
if (movePossible(sc, move[0], start + i*dir, dir)) {
|
|
|
|
moves = 1;
|
|
|
|
if (movePossible(sc, move[1], start, dir)) {
|
|
|
|
return 2;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
// Restore scratch copy...
|
|
|
|
sc = *this;
|
|
|
|
}
|
|
|
|
for (int i = 0; i < 25; i++) {
|
|
|
|
|
|
|
|
if (movePossible(sc, move[1], start + i*dir, dir)) {
|
|
|
|
moves = 1;
|
|
|
|
if (movePossible(sc, move[0], start, dir)) {
|
|
|
|
return 2;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
// Restore scratch copy...
|
|
|
|
sc = *this;
|
|
|
|
}
|
|
|
|
return moves;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
bool KBgStatus::movePossible(KBgStatus &sc, int a, int start, int dir) const
|
|
|
|
{
|
|
|
|
/*
|
|
|
|
* Determine where the first checker in moving direction is
|
|
|
|
* located
|
|
|
|
*/
|
|
|
|
int first = (dir > 0) ? 1 : 24;
|
|
|
|
int last = (dir > 0) ? 25 : 0;
|
|
|
|
while (first != last && color(turn())*sc.board(first) <= 0)
|
|
|
|
first += dir;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Are we moving off ?
|
|
|
|
*/
|
|
|
|
bool off = false;
|
|
|
|
if ((dir > 0 && first > 18) || (dir < 0 && first < 7))
|
|
|
|
off = true;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Find a move by exhaustive search.
|
|
|
|
*/
|
|
|
|
while (true) {
|
|
|
|
|
|
|
|
start += dir;
|
|
|
|
int final = start+dir*a;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Make absolutely sure that the loop terminates eventually
|
|
|
|
*/
|
|
|
|
if (start <= 0 || start >= 25)
|
|
|
|
return false;
|
|
|
|
|
|
|
|
if (color(turn())*sc.board(start) > 0) {
|
|
|
|
|
|
|
|
if (0 < final && final < 25 && color(turn())*sc.board(final) >= -1) {
|
|
|
|
sc.setBoard(start, turn(), abs(sc.board(start)) - 1);
|
|
|
|
sc.setBoard(final, turn(), abs(sc.board(final)) + 1);
|
|
|
|
return true;
|
|
|
|
} else if (off && (final == 0 || final == 25)) {
|
|
|
|
sc.setBoard(start, turn(), abs(sc.board(start)) - 1);
|
|
|
|
sc.setHome(turn(), abs(sc.home(turn())) + 1);
|
|
|
|
return true;
|
|
|
|
} else if (off && first == start && (final > 24 || final < 1)) {
|
|
|
|
sc.setBoard(start, turn(), abs(sc.board(start)) - 1);
|
|
|
|
sc.setHome(turn(), abs(sc.home(turn())) + 1);
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
// EOF
|