1 /*- 2 * Copyright (c) 1980, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * @(#)score.c 8.1 (Berkeley) 5/31/93 34 * $FreeBSD: src/games/cribbage/score.c,v 1.6 1999/11/30 03:48:47 billf Exp $ 35 * $DragonFly: src/games/cribbage/score.c,v 1.2 2003/06/17 04:25:23 dillon Exp $ 36 */ 37 38 #include <curses.h> 39 #include <stdio.h> 40 #include <stdlib.h> 41 #include <string.h> 42 43 #include "deck.h" 44 #include "cribbage.h" 45 46 /* 47 * the following arrays give the sum of the scores of the (50 2)*48 = 58800 48 * hands obtainable for the crib given the two cards whose ranks index the 49 * array. the two arrays are for the case where the suits are equal and 50 * not equal respectively 51 */ 52 long crbescr[169] = { 53 -10000, 271827, 278883, 332319, 347769, 261129, 250653, 253203, 248259, 54 243435, 256275, 237435, 231051, -10000, -10000, 412815, 295707, 349497, 55 267519, 262521, 259695, 254019, 250047, 262887, 244047, 237663, -10000, 56 -10000, -10000, 333987, 388629, 262017, 266787, 262971, 252729, 254475, 57 267315, 248475, 242091, -10000, -10000, -10000, -10000, 422097, 302787, 58 256437, 263751, 257883, 254271, 267111, 248271, 241887, -10000, -10000, 59 -10000, -10000, -10000, 427677, 387837, 349173, 347985, 423861, 436701, 60 417861, 411477, -10000, -10000, -10000, -10000, -10000, -10000, 336387, 61 298851, 338667, 236487, 249327, 230487, 224103, -10000, -10000, -10000, 62 -10000, -10000, -10000, -10000, 408483, 266691, 229803, 246195, 227355, 63 220971, -10000, -10000, -10000, -10000, -10000, -10000, -10000, -10000, 64 300675, 263787, 241695, 226407, 220023, -10000, -10000, -10000, -10000, 65 -10000, -10000, -10000, -10000, -10000, 295635, 273543, 219771, 216939, 66 -10000, -10000, -10000, -10000, -10000, -10000, -10000, -10000, -10000, 67 -10000, 306519, 252747, 211431, -10000, -10000, -10000, -10000, -10000, 68 -10000, -10000, -10000, -10000, -10000, -10000, 304287, 262971, -10000, 69 -10000, -10000, -10000, -10000, -10000, -10000, -10000, -10000, -10000, 70 -10000, -10000, 244131, -10000, -10000, -10000, -10000, -10000, -10000, 71 -10000, -10000, -10000, -10000, -10000, -10000, -10000 72 }; 73 74 long crbnescr[169] = { 75 325272, 260772, 267828, 321264, 336714, 250074, 239598, 242148, 237204, 76 232380, 246348, 226380, 219996, -10000, 342528, 401760, 284652, 338442, 77 256464, 251466, 248640, 242964, 238992, 252960, 232992, 226608, -10000, 78 -10000, 362280, 322932, 377574, 250962, 255732, 251916, 241674, 243420, 79 257388, 237420, 231036, -10000, -10000, -10000, 360768, 411042, 291732, 80 245382, 252696, 246828, 243216, 257184, 237216, 230832, -10000, -10000, 81 -10000, -10000, 528768, 416622, 376782, 338118, 336930, 412806, 426774, 82 406806, 400422, -10000, -10000, -10000, -10000, -10000, 369864, 325332, 83 287796, 327612, 225432, 239400, 219432, 213048, -10000, -10000, -10000, 84 -10000, -10000, -10000, 359160, 397428, 255636, 218748, 236268, 216300, 85 209916, -10000, -10000, -10000, -10000, -10000, -10000, -10000, 331320, 86 289620, 252732, 231768, 215352, 208968, -10000, -10000, -10000, -10000, 87 -10000, -10000, -10000, -10000, 325152, 284580, 263616, 208716, 205884, 88 -10000, -10000, -10000, -10000, -10000, -10000, -10000, -10000, -10000, 89 321240, 296592, 241692, 200376, -10000, -10000, -10000, -10000, -10000, 90 -10000, -10000, -10000, -10000, -10000, 348600, 294360, 253044, -10000, 91 -10000, -10000, -10000, -10000, -10000, -10000, -10000, -10000, -10000, 92 -10000, 308664, 233076, -10000, -10000, -10000, -10000, -10000, -10000, 93 -10000, -10000, -10000, -10000, -10000, -10000, 295896 94 }; 95 96 static int ichoose2[5] = { 0, 0, 2, 6, 12 }; 97 static int pairpoints, runpoints; /* Globals from pairuns. */ 98 99 /* 100 * scorehand: 101 * Score the given hand of n cards and the starter card. 102 * n must be <= 4 103 */ 104 int 105 scorehand(hand, starter, n, crb, do_explain) 106 CARD hand[]; 107 CARD starter; 108 int n; 109 BOOLEAN crb; /* true if scoring crib */ 110 BOOLEAN do_explain; /* true if must explain this hand */ 111 { 112 int i, k; 113 int score; 114 BOOLEAN flag; 115 CARD h[(CINHAND + 1)]; 116 char buf[32]; 117 118 expl[0] = '\0'; /* initialize explanation */ 119 score = 0; 120 flag = TRUE; 121 k = hand[0].suit; 122 for (i = 0; i < n; i++) { /* check for flush */ 123 flag = (flag && (hand[i].suit == k)); 124 if (hand[i].rank == JACK) /* check for his nibs */ 125 if (hand[i].suit == starter.suit) { 126 score++; 127 if (do_explain) 128 strcat(expl, "His Nobs"); 129 } 130 h[i] = hand[i]; 131 } 132 133 if (flag && n >= CINHAND) { 134 if (do_explain && expl[0] != '\0') 135 strcat(expl, ", "); 136 if (starter.suit == k) { 137 score += 5; 138 if (do_explain) 139 strcat(expl, "Five-flush"); 140 } else 141 if (!crb) { 142 score += 4; 143 if (do_explain && expl[0] != '\0') 144 strcat(expl, ", Four-flush"); 145 else 146 strcpy(expl, "Four-flush"); 147 } 148 } 149 if (do_explain && expl[0] != '\0') 150 strcat(expl, ", "); 151 h[n] = starter; 152 sorthand(h, n + 1); /* sort by rank */ 153 i = 2 * fifteens(h, n + 1); 154 score += i; 155 if (do_explain) { 156 if (i > 0) { 157 (void) sprintf(buf, "%d points in fifteens", i); 158 strcat(expl, buf); 159 } else 160 strcat(expl, "No fifteens"); 161 } 162 i = pairuns(h, n + 1); 163 score += i; 164 if (do_explain) { 165 if (i > 0) { 166 (void) sprintf(buf, ", %d points in pairs, %d in runs", 167 pairpoints, runpoints); 168 strcat(expl, buf); 169 } else 170 strcat(expl, ", No pairs/runs"); 171 } 172 return (score); 173 } 174 175 /* 176 * fifteens: 177 * Return number of fifteens in hand of n cards 178 */ 179 int 180 fifteens(hand, n) 181 CARD hand[]; 182 int n; 183 { 184 int *sp, *np; 185 int i; 186 CARD *endp; 187 static int sums[15], nsums[15]; 188 189 np = nsums; 190 sp = sums; 191 i = 16; 192 while (--i) { 193 *np++ = 0; 194 *sp++ = 0; 195 } 196 for (endp = &hand[n]; hand < endp; hand++) { 197 i = hand->rank + 1; 198 if (i > 10) 199 i = 10; 200 np = &nsums[i]; 201 np[-1]++; /* one way to make this */ 202 sp = sums; 203 while (i < 15) { 204 *np++ += *sp++; 205 i++; 206 } 207 sp = sums; 208 np = nsums; 209 i = 16; 210 while (--i) 211 *sp++ = *np++; 212 } 213 return sums[14]; 214 } 215 216 /* 217 * pairuns returns the number of points in the n card sorted hand 218 * due to pairs and runs 219 * this routine only works if n is strictly less than 6 220 * sets the globals pairpoints and runpoints appropriately 221 */ 222 int 223 pairuns(h, n) 224 CARD h[]; 225 int n; 226 { 227 int i; 228 int runlength, runmult, lastmult, curmult; 229 int mult1, mult2, pair1, pair2; 230 BOOLEAN run; 231 232 run = TRUE; 233 runlength = 1; 234 mult1 = 1; 235 pair1 = -1; 236 mult2 = 1; 237 pair2 = -1; 238 curmult = runmult = 1; 239 for (i = 1; i < n; i++) { 240 lastmult = curmult; 241 if (h[i].rank == h[i - 1].rank) { 242 if (pair1 < 0) { 243 pair1 = h[i].rank; 244 mult1 = curmult = 2; 245 } else { 246 if (h[i].rank == pair1) { 247 curmult = ++mult1; 248 } else { 249 if (pair2 < 0) { 250 pair2 = h[i].rank; 251 mult2 = curmult = 2; 252 } else { 253 curmult = ++mult2; 254 } 255 } 256 } 257 if (i == (n - 1) && run) { 258 runmult *= curmult; 259 } 260 } else { 261 curmult = 1; 262 if (h[i].rank == h[i - 1].rank + 1) { 263 if (run) { 264 ++runlength; 265 } else { 266 /* only if old short */ 267 if (runlength < 3) { 268 run = TRUE; 269 runlength = 2; 270 runmult = 1; 271 } 272 } 273 runmult *= lastmult; 274 } else { 275 /* if just ended */ 276 if (run) 277 runmult *= lastmult; 278 run = FALSE; 279 } 280 } 281 } 282 pairpoints = ichoose2[mult1] + ichoose2[mult2]; 283 runpoints = (runlength >= 3 ? runlength * runmult : 0); 284 return (pairpoints + runpoints); 285 } 286 287 /* 288 * pegscore tells how many points crd would get if played after 289 * the n cards in tbl during pegging 290 */ 291 int 292 pegscore(crd, tbl, n, sum) 293 CARD crd, tbl[]; 294 int n, sum; 295 { 296 BOOLEAN got[RANKS]; 297 int i, j, scr; 298 int k, lo, hi; 299 300 sum += VAL(crd.rank); 301 if (sum > 31) 302 return (-1); 303 if (sum == 31 || sum == 15) 304 scr = 2; 305 else 306 scr = 0; 307 if (!n) 308 return (scr); 309 j = 1; 310 while ((crd.rank == tbl[n - j].rank) && (n - j >= 0)) 311 ++j; 312 if (j > 1) 313 return (scr + ichoose2[j]); 314 if (n < 2) 315 return (scr); 316 lo = hi = crd.rank; 317 for (i = 0; i < RANKS; i++) 318 got[i] = FALSE; 319 got[crd.rank] = TRUE; 320 k = -1; 321 for (i = n - 1; i >= 0; --i) { 322 if (got[tbl[i].rank]) 323 break; 324 got[tbl[i].rank] = TRUE; 325 if (tbl[i].rank < lo) 326 lo = tbl[i].rank; 327 if (tbl[i].rank > hi) 328 hi = tbl[i].rank; 329 for (j = lo; j <= hi; j++) 330 if (!got[j]) 331 break; 332 if (j > hi) 333 k = hi - lo + 1; 334 } 335 if (k >= 3) 336 return (scr + k); 337 else 338 return (scr); 339 } 340 341 /* 342 * adjust takes a two card hand that will be put in the crib 343 * and returns an adjusted normalized score for the number of 344 * points such a crib will get. 345 */ 346 int 347 adjust(cb, tnv) 348 CARD cb[], tnv; 349 { 350 long scr; 351 int i, c0, c1; 352 353 c0 = cb[0].rank; 354 c1 = cb[1].rank; 355 if (c0 > c1) { 356 i = c0; 357 c0 = c1; 358 c1 = i; 359 } 360 if (cb[0].suit != cb[1].suit) 361 scr = crbnescr[RANKS * c0 + c1]; 362 else 363 scr = crbescr[RANKS * c0 + c1]; 364 if (scr <= 0) { 365 printf("\nADJUST: internal error %d %d\n", c0, c1); 366 exit(93); 367 } 368 return ((scr + 29400) / 58800); 369 } 370