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- /*
- * Copyright (c) 1980 Regents of the University of California.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the University of
- * California, Berkeley and its contributors.
- * 4. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
- #ifndef lint
- static char sccsid[] = "@(#)support.c 5.6 (Berkeley) 2/28/91";
- #endif /* not lint */
-
- #include <curses.h>
- #include "deck.h"
- #include "cribbage.h"
- #include "cribcur.h"
-
-
- #define NTV 10 /* number scores to test */
-
- /* score to test reachability of, and order to test them in */
- int tv[ NTV ] = { 8, 7, 9, 6, 11, 12, 13, 14, 10, 5 };
-
-
- /*
- * computer chooses what to play in pegging...
- * only called if no playable card will score points
- */
-
- cchose( h, n, s )
-
- CARD h[];
- int n;
- int s;
- {
- register int i, j, l;
-
- if( n <= 1 ) return( 0 );
- if( s < 4 ) { /* try for good value */
- if( ( j = anysumto(h, n, s, 4) ) >= 0 ) return( j );
- if( ( j = anysumto(h, n, s, 3) ) >= 0 && s == 0 )
- return( j );
- }
- if( s > 0 && s < 20 ) {
- for( i = 1; i <= 10; i++ ) { /* try for retaliation to 31 */
- if( ( j = anysumto(h, n, s, 21-i) ) >= 0 ) {
- if( ( l = numofval(h, n, i) ) > 0 ) {
- if( l > 1 || VAL( h[j].rank ) != i ) return( j );
- }
- }
- }
- }
- if( s < 15 ) {
- for( i = 0; i < NTV; i++ ) { /* for retaliation after 15 */
- if( ( j = anysumto(h, n, s, tv[i]) ) >= 0 ) {
- if( ( l = numofval(h, n, 15-tv[i]) ) > 0 ) {
- if( l > 1 || VAL( h[j].rank ) != 15-tv[i] ) return( j );
- }
- }
- }
- }
- j = -1;
- for( i = n - 1; i >= 0; --i ) { /* remember: h is sorted */
- l = s + VAL( h[i].rank );
- if( l > 31 ) continue;
- if( l != 5 && l != 10 && l != 21 ) {
- j = i;
- break;
- }
- }
- if( j >= 0 ) return( j );
- for( i = n - 1; i >= 0; --i ) {
- l = s + VAL( h[i].rank );
- if( l > 31 ) continue;
- if( j < 0 ) j = i;
- if( l != 5 && l != 21 ) {
- j = i;
- break;
- }
- }
- return( j );
- }
-
-
-
- /*
- * plyrhand:
- * Evaluate and score a player hand or crib
- */
- plyrhand(hand, s)
- CARD hand[];
- char *s;
- {
- register int i, j;
- register BOOLEAN win;
- static char prompt[BUFSIZ];
-
- prhand(hand, CINHAND, Playwin, FALSE);
- (void)sprintf(prompt, "Your %s scores ", s);
- i = scorehand(hand, turnover, CINHAND, strcmp(s, "crib") == 0, explain);
- if ((j = number(0, 29, prompt)) == 19)
- j = 0;
- if (i != j) {
- if (i < j) {
- win = chkscr(&pscore, i);
- msg("It's really only %d points; I get %d", i, 2);
- if (!win)
- win = chkscr(&cscore, 2);
- }
- else {
- win = chkscr(&pscore, j);
- msg("You should have taken %d, not %d!", i, j);
- }
- if (explain)
- msg("Explanation: %s", expl);
- do_wait();
- }
- else
- win = chkscr(&pscore, i);
- return win;
- }
-
- /*
- * comphand:
- * Handle scoring and displaying the computers hand
- */
- comphand(h, s)
- CARD h[];
- char *s;
- {
- register int j;
-
- j = scorehand(h, turnover, CINHAND, strcmp(s, "crib") == 0, FALSE);
- prhand(h, CINHAND, Compwin, FALSE);
- msg("My %s scores %d", s, (j == 0 ? 19 : j));
- return chkscr(&cscore, j);
- }
-
- /*
- * chkscr:
- * Add inc to scr and test for > glimit, printing on the scoring
- * board while we're at it.
- */
-
- int Lastscore[2] = {-1, -1};
-
- chkscr(scr, inc)
- int *scr, inc;
- {
- BOOLEAN myturn;
-
- myturn = (scr == &cscore);
- if (inc != 0) {
- prpeg(Lastscore[myturn], '.', myturn);
- Lastscore[myturn] = *scr;
- *scr += inc;
- prpeg(*scr, PEG, myturn);
- refresh();
- }
- return (*scr >= glimit);
- }
-
- /*
- * prpeg:
- * Put out the peg character on the score board and put the
- * score up on the board.
- */
- prpeg(score, peg, myturn)
- register int score;
- char peg;
- BOOLEAN myturn;
- {
- register int y, x;
-
- if (!myturn)
- y = SCORE_Y + 2;
- else
- y = SCORE_Y + 5;
-
- if (score <= 0 || score >= glimit) {
- if (peg == '.')
- peg = ' ';
- if (score == 0)
- x = SCORE_X + 2;
- else {
- x = SCORE_X + 2;
- y++;
- }
- }
- else {
- x = (score - 1) % 30;
- if (score > 90 || (score > 30 && score <= 60)) {
- y++;
- x = 29 - x;
- }
- x += x / 5;
- x += SCORE_X + 3;
- }
- mvaddch(y, x, peg);
- mvprintw(SCORE_Y + (myturn ? 7 : 1), SCORE_X + 10, "%3d", score);
- }
-
- /*
- * cdiscard -- the computer figures out what is the best discard for
- * the crib and puts the best two cards at the end
- */
-
- cdiscard( mycrib )
-
- BOOLEAN mycrib;
- {
- CARD d[ CARDS ], h[ FULLHAND ], cb[ 2 ];
- register int i, j, k;
- int nc, ns;
- long sums[ 15 ];
- static int undo1[15] = {0,0,0,0,0,1,1,1,1,2,2,2,3,3,4};
- static int undo2[15] = {1,2,3,4,5,2,3,4,5,3,4,5,4,5,5};
-
- makedeck( d );
- nc = CARDS;
- for( i = 0; i < knownum; i++ ) { /* get all other cards */
- cremove( known[i], d, nc-- );
- }
- for( i = 0; i < 15; i++ ) sums[i] = 0L;
- ns = 0;
- for( i = 0; i < (FULLHAND - 1); i++ ) {
- cb[0] = chand[i];
- for( j = i + 1; j < FULLHAND; j++ ) {
- cb[1] = chand[j];
- for( k = 0; k < FULLHAND; k++ ) h[k] = chand[k];
- cremove( chand[i], h, FULLHAND );
- cremove( chand[j], h, FULLHAND - 1 );
- for( k = 0; k < nc; k++ ) {
- sums[ns] += scorehand( h, d[k], CINHAND, TRUE, FALSE );
- if( mycrib ) sums[ns] += adjust( cb, d[k] );
- else sums[ns] -= adjust( cb, d[k] );
- }
- ++ns;
- }
- }
- j = 0;
- for( i = 1; i < 15; i++ ) if( sums[i] > sums[j] ) j = i;
- for( k = 0; k < FULLHAND; k++ ) h[k] = chand[k];
- cremove( h[ undo1[j] ], chand, FULLHAND );
- cremove( h[ undo2[j] ], chand, FULLHAND - 1 );
- chand[4] = h[ undo1[j] ];
- chand[5] = h[ undo2[j] ];
- }
-
-
-
- /*
- * returns true if some card in hand can be played without exceeding 31
- */
-
- anymove( hand, n, sum )
-
- CARD hand[];
- int n;
- int sum;
- {
- register int i, j;
-
- if( n < 1 ) return( FALSE );
- j = hand[0].rank;
- for( i = 1; i < n; i++ ) {
- if( hand[i].rank < j ) j = hand[i].rank;
- }
- return( sum + VAL( j ) <= 31 );
- }
-
-
-
- /*
- * anysumto returns the index (0 <= i < n) of the card in hand that brings
- * the s up to t, or -1 if there is none
- */
-
- anysumto( hand, n, s, t )
-
- CARD hand[];
- int n;
- int s, t;
- {
- register int i;
-
- for( i = 0; i < n; i++ ) {
- if( s + VAL( hand[i].rank ) == t ) return( i );
- }
- return( -1 );
- }
-
-
-
-
- /*
- * return the number of cards in h having the given rank value
- */
-
- numofval( h, n, v )
-
- CARD h[];
- int n;
- int v;
- {
- register int i, j;
-
- j = 0;
- for( i = 0; i < n; i++ ) {
- if( VAL( h[i].rank ) == v ) ++j;
- }
- return( j );
- }
-
-
-
- /*
- * makeknown remembers all n cards in h for future recall
- */
-
- makeknown( h, n )
-
- CARD h[];
- int n;
- {
- register int i;
-
- for( i = 0; i < n; i++ ) {
- known[ knownum++ ] = h[i];
- }
- }
-
-