games/sail/dr_1.c

   1 /*-
   2  * Copyright (c) 1983, 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. Neither the name of the University nor the names of its contributors
  14  *    may be used to endorse or promote products derived from this software
  15  *    without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  27  * SUCH DAMAGE.
  28  *
  29  * @(#)dr_1.c   8.1 (Berkeley) 5/31/93
  30  * $FreeBSD: src/games/sail/dr_1.c,v 1.7 1999/11/30 03:49:32 billf Exp $
  31  */
  32
  33 #include "driver.h"
  34
  35 static int fightitout(struct ship *, struct ship *, int);
  36
  37 void
  38 unfoul(void)
  39 {
  40         struct ship *sp;
  41         struct ship *to;
  42         int nat;
  43         int i;
  44
  45         foreachship(sp) {
  46                 if (sp->file->captain[0])
  47                         continue;
  48                 nat = capship(sp)->nationality;
  49                 foreachship(to) {
  50                         if (nat != capship(to)->nationality &&
  51                             !toughmelee(sp, to, 0, 0))
  52                                 continue;
  53                         for (i = fouled2(sp, to); --i >= 0;)
  54                                 if (die() <= 2)
  55                                         cleanfoul(sp, to, 0);
  56                 }
  57         }
  58 }
  59
  60 void
  61 boardcomp(void)
  62 {
  63         int crew[3];
  64         struct ship *sp, *sq;
  65
  66         foreachship(sp) {
  67                 if (*sp->file->captain)
  68                         continue;
  69                 if (sp->file->dir == 0)
  70                         continue;
  71                 if (sp->file->struck || sp->file->captured != 0)
  72                         continue;
  73                 if (!snagged(sp))
  74                         continue;
  75                 crew[0] = sp->specs->crew1 != 0;
  76                 crew[1] = sp->specs->crew2 != 0;
  77                 crew[2] = sp->specs->crew3 != 0;
  78                 foreachship(sq) {
  79                         if (!Xsnagged2(sp, sq))
  80                                 continue;
  81                         if (meleeing(sp, sq))
  82                                 continue;
  83                         if (!sq->file->dir
  84                                 || sp->nationality == capship(sq)->nationality)
  85                                 continue;
  86                         switch (sp->specs->class - sq->specs->class) {
  87                         case -3: case -4: case -5:
  88                                 if (crew[0]) {
  89                                         /* OBP */
  90                                         sendbp(sp, sq, crew[0]*100, 0);
  91                                         crew[0] = 0;
  92                                 } else if (crew[1]) {
  93                                         /* OBP */
  94                                         sendbp(sp, sq, crew[1]*10, 0);
  95                                         crew[1] = 0;
  96                                 }
  97                                 break;
  98                         case -2:
  99                                 if (crew[0] || crew[1]) {
 100                                         /* OBP */
 101                                         sendbp(sp, sq, crew[0]*100+crew[1]*10,
 102                                                 0);
 103                                         crew[0] = crew[1] = 0;
 104                                 }
 105                                 break;
 106                         case -1: case 0: case 1:
 107                                 if (crew[0]) {
 108                                         /* OBP */
 109                                         sendbp(sp, sq, crew[0]*100+crew[1]*10,
 110                                                 0);
 111                                         crew[0] = crew[1] = 0;
 112                                 }
 113                                 break;
 114                         case 2: case 3: case 4: case 5:
 115                                 /* OBP */
 116                                 sendbp(sp, sq, crew[0]*100+crew[1]*10+crew[2],
 117                                         0);
 118                                 crew[0] = crew[1] = crew[2] = 0;
 119                                 break;
 120                         }
 121                 }
 122         }
 123 }
 124
 125 static int
 126 fightitout(struct ship *from, struct ship *to, int key)
 127 {
 128         struct ship *fromcap, *tocap;
 129         int crewfrom[3], crewto[3], menfrom, mento;
 130         int pcto, pcfrom, fromstrength, strengthto, frominjured, toinjured;
 131         int topoints;
 132         int idx, totalfrom = 0, totalto = 0;
 133         int count;
 134         char message[60];
 135
 136         menfrom = mensent(from, to, crewfrom, &fromcap, &pcfrom, key);
 137         mento = mensent(to, from, crewto, &tocap, &pcto, 0);
 138         if (fromcap == NULL)
 139                 fromcap = from;
 140         if (tocap == NULL)
 141                 tocap = to;
 142         if (key) {
 143                 if (!menfrom) {          /* if crew surprised */
 144                         if (fromcap == from)
 145                                 menfrom = from->specs->crew1
 146                                         + from->specs->crew2
 147                                         + from->specs->crew3;
 148                         else
 149                                 menfrom = from->file->pcrew;
 150                 } else {
 151                         menfrom *= 2;   /* DBP's fight at an advantage */
 152                 }
 153         }
 154         fromstrength = menfrom * fromcap->specs->qual;
 155         strengthto = mento * tocap->specs->qual;
 156         for (count = 0;
 157              ((fromstrength < strengthto * 3 && strengthto < fromstrength * 3)
 158               || fromstrength == -1) && count < 4;
 159              count++) {
 160                 idx = fromstrength/10;
 161                 if (idx > 8)
 162                         idx = 8;
 163                 toinjured = MT[idx][2 - die() / 3];
 164                 totalto += toinjured;
 165                 idx = strengthto/10;
 166                 if (idx > 8)
 167                         idx = 8;
 168                 frominjured = MT[idx][2 - die() / 3];
 169                 totalfrom += frominjured;
 170                 menfrom -= frominjured;
 171                 mento -= toinjured;
 172                 fromstrength = menfrom * fromcap->specs->qual;
 173                 strengthto = mento * tocap->specs->qual;
 174         }
 175         if (fromstrength >= strengthto * 3 || count == 4) {
 176                 unboard(to, from, 0);
 177                 subtract(from, totalfrom, crewfrom, fromcap, pcfrom);
 178                 subtract(to, totalto, crewto, tocap, pcto);
 179                 makesignal(from, "boarders from %s repelled", to);
 180                 sprintf(message, "killed in melee: %d.  %s: %d",
 181                         totalto, from->shipname, totalfrom);
 182                 Writestr(W_SIGNAL, to, message);
 183                 if (key)
 184                         return 1;
 185         } else if (strengthto >= fromstrength * 3) {
 186                 unboard(from, to, 0);
 187                 subtract(from, totalfrom, crewfrom, fromcap, pcfrom);
 188                 subtract(to, totalto, crewto, tocap, pcto);
 189                 if (key) {
 190                         if (fromcap != from)
 191                                 Write(W_POINTS, fromcap,
 192                                         fromcap->file->points -
 193                                                 from->file->struck
 194                                                 ? from->specs->pts
 195                                                 : 2 * from->specs->pts,
 196                                         0, 0, 0);
 197
 198 /* ptr1 points to the shipspec for the ship that was just unboarded.
 199    I guess that what is going on here is that the pointer is multiplied
 200    or something. */
 201
 202                         Write(W_CAPTURED, from, to->file->index, 0, 0, 0);
 203                         topoints = 2 * from->specs->pts + to->file->points;
 204                         if (from->file->struck)
 205                                 topoints -= from->specs->pts;
 206                         Write(W_POINTS, to, topoints, 0, 0, 0);
 207                         mento = crewto[0] ? crewto[0] : crewto[1];
 208                         if (mento) {
 209                                 subtract(to, mento, crewto, tocap, pcto);
 210                                 subtract(from, - mento, crewfrom, to, 0);
 211                         }
 212                         sprintf(message, "captured by the %s!",
 213                                 to->shipname);
 214                         Writestr(W_SIGNAL, from, message);
 215                         sprintf(message, "killed in melee: %d.  %s: %d",
 216                                 totalto, from->shipname, totalfrom);
 217                         Writestr(W_SIGNAL, to, message);
 218                         mento = 0;
 219                         return 0;
 220                 }
 221         }
 222         return 0;
 223 }
 224
 225 void
 226 resolve(void)
 227 {
 228         int thwart;
 229         struct ship *sp, *sq;
 230
 231         foreachship(sp) {
 232                 if (sp->file->dir == 0)
 233                         continue;
 234                 for (sq = sp + 1; sq < ls; sq++)
 235                         if (sq->file->dir && meleeing(sp, sq) &&
 236                             meleeing(sq, sp))
 237                                 fightitout(sp, sq, 0);
 238                 thwart = 2;
 239                 foreachship(sq) {
 240                         if (sq->file->dir && meleeing(sq, sp))
 241                                 thwart = fightitout(sp, sq, 1);
 242                         if (!thwart)
 243                                 break;
 244                 }
 245                 if (!thwart) {
 246                         foreachship(sq) {
 247                                 if (sq->file->dir && meleeing(sq, sp))
 248                                         unboard(sq, sp, 0);
 249                                 unboard(sp, sq, 0);
 250                         }
 251                         unboard(sp, sp, 1);
 252                 } else if (thwart == 2)
 253                         unboard(sp, sp, 1);
 254         }
 255 }
 256
 257 void
 258 compcombat(void)
 259 {
 260         int n;
 261         struct ship *sp;
 262         struct ship *closest;
 263         int crew[3], men = 0, target, temp;
 264         int r, guns, ready, load, car;
 265         int idx, rakehim, sternrake;
 266         int shootat, hit;
 267
 268         foreachship(sp) {
 269                 if (sp->file->captain[0] || sp->file->dir == 0)
 270                         continue;
 271                 crew[0] = sp->specs->crew1;
 272                 crew[1] = sp->specs->crew2;
 273                 crew[2] = sp->specs->crew3;
 274                 for (n = 0; n < 3; n++) {
 275                         if (sp->file->OBP[n].turnsent)
 276                                 men += sp->file->OBP[n].mensent;
 277                 }
 278                 for (n = 0; n < 3; n++) {
 279                         if (sp->file->DBP[n].turnsent)
 280                                 men += sp->file->DBP[n].mensent;
 281                 }
 282                 if (men) {
 283                         crew[0] = men/100 ? 0 : crew[0] != 0;
 284                         crew[1] = (men%100)/10 ? 0 : crew[1] != 0;
 285                         crew[2] = men%10 ? 0 : crew[2] != 0;
 286                 }
 287                 for (r = 0; r < 2; r++) {
 288                         if (!crew[2])
 289                                 continue;
 290                         if (sp->file->struck)
 291                                 continue;
 292                         if (r) {
 293                                 ready = sp->file->readyR;
 294                                 guns = sp->specs->gunR;
 295                                 car = sp->specs->carR;
 296                         } else {
 297                                 ready = sp->file->readyL;
 298                                 guns = sp->specs->gunL;
 299                                 car = sp->specs->carL;
 300                         }
 301                         if (!guns && !car)
 302                                 continue;
 303                         if ((ready & R_LOADED) == 0)
 304                                 continue;
 305                         closest = closestenemy(sp, r ? 'r' : 'l', 0);
 306                         if (closest == NULL)
 307                                 continue;
 308                         if (range(closest, sp) >
 309                             range(sp, closestenemy(sp, r ? 'r' : 'l', 1)))
 310                                 continue;
 311                         if (closest->file->struck)
 312                                 continue;
 313                         target = range(sp, closest);
 314                         if (target > 10)
 315                                 continue;
 316                         if (!guns && target >= 3)
 317                                 continue;
 318                         load = L_ROUND;
 319                         if (target == 1 && sp->file->loadwith == L_GRAPE)
 320                                 load = L_GRAPE;
 321                         if (target <= 3 && closest->file->FS)
 322                                 load = L_CHAIN;
 323                         if (target == 1 && load != L_GRAPE)
 324                                 load = L_DOUBLE;
 325                         if (load > L_CHAIN && target < 6)
 326                                 shootat = HULL;
 327                         else
 328                                 shootat = RIGGING;
 329                         rakehim = gunsbear(sp, closest)
 330                                 && !gunsbear(closest, sp);
 331                         temp = portside(closest, sp, 1)
 332                                 - closest->file->dir + 1;
 333                         if (temp < 1)
 334                                 temp += 8;
 335                         if (temp > 8)
 336                                 temp -= 8;
 337                         sternrake = temp > 4 && temp < 6;
 338                         idx = guns;
 339                         if (target < 3)
 340                                 idx += car;
 341                         idx = (idx - 1) / 3;
 342                         idx = idx > 8 ? 8 : idx;
 343                         if (!rakehim)
 344                                 hit = HDT[idx][target-1];
 345                         else
 346                                 hit = HDTrake[idx][target-1];
 347                         if (rakehim && sternrake)
 348                                 hit++;
 349                         hit += QUAL[idx][capship(sp)->specs->qual - 1];
 350                         for (n = 0; n < 3 && sp->file->captured == 0; n++) {
 351                                 if (!crew[n]) {
 352                                         if (idx <= 5)
 353                                                 hit--;
 354                                         else
 355                                                 hit -= 2;
 356                                 }
 357                         }
 358                         if (ready & R_INITIAL) {
 359                                 if (!r)
 360                                         sp->file->readyL &= ~R_INITIAL;
 361                                 else
 362                                         sp->file->readyR &= ~R_INITIAL;
 363                                 if (idx <= 3)
 364                                         hit++;
 365                                 else
 366                                         hit += 2;
 367                         }
 368                         if (sp->file->captured != 0) {
 369                                 if (idx <= 1)
 370                                         hit--;
 371                                 else
 372                                         hit -= 2;
 373                         }
 374                         hit += AMMO[idx][load - 1];
 375                         temp = sp->specs->class;
 376                         if ((temp >= 5 || temp == 1) && windspeed == 5)
 377                                 hit--;
 378                         if (windspeed == 6 && temp == 4)
 379                                 hit -= 2;
 380                         if (windspeed == 6 && temp <= 3)
 381                                 hit--;
 382                         if (hit >= 0) {
 383                                 if (load != L_GRAPE)
 384                                         hit = hit > 10 ? 10 : hit;
 385                                 table(shootat, load, hit, closest, sp, die());
 386                         }
 387                 }
 388         }
 389 }
 390
 391 int
 392 next(void)
 393 {
 394         if (++turn % 55 == 0) {
 395                 if (alive)
 396                         alive = 0;
 397                 else
 398                         people = 0;
 399         }
 400         if (people <= 0 || windspeed == 7) {
 401                 struct ship *s;
 402                 struct ship *bestship = NULL;
 403                 float net, best = 0.0;
 404                 foreachship(s) {
 405                         if (*s->file->captain)
 406                                 continue;
 407                         net = (float)s->file->points / s->specs->pts;
 408                         if (net > best) {
 409                                 best = net;
 410                                 bestship = s;
 411                         }
 412                 }
 413                 if (best > 0.0) {
 414                         char *p = getenv("WOTD");
 415                         if (p == NULL) {
 416                                 char buf[6] = "Driver";
 417                                 p = buf;
 418                         }
 419                         if (islower(*p))
 420                                 *p = toupper(*p);
 421                         strncpy(bestship->file->captain, p,
 422                                 sizeof bestship->file->captain);
 423                         bestship->file->captain
 424                                 [sizeof bestship->file->captain - 1] = 0;
 425                         write_log(bestship);
 426                 }
 427                 return -1;
 428         }
 429         Write(W_TURN, SHIP(0), turn, 0, 0, 0);
 430         if (turn % 7 == 0 && (die() >= cc->windchange || !windspeed)) {
 431                 switch (die()) {
 432                 case 1:
 433                         winddir = 1;
 434                         break;
 435                 case 2:
 436                         break;
 437                 case 3:
 438                         winddir++;
 439                         break;
 440                 case 4:
 441                         winddir--;
 442                         break;
 443                 case 5:
 444                         winddir += 2;
 445                         break;
 446                 case 6:
 447                         winddir -= 2;
 448                         break;
 449                 }
 450                 if (winddir > 8)
 451                         winddir -= 8;
 452                 if (winddir < 1)
 453                         winddir += 8;
 454                 if (windspeed)
 455                         switch (die()) {
 456                         case 1:
 457                         case 2:
 458                                 windspeed--;
 459                                 break;
 460                         case 5:
 461                         case 6:
 462                                 windspeed++;
 463                                 break;
 464                         }
 465                 else
 466                         windspeed++;
 467                 Write(W_WIND, SHIP(0), winddir, windspeed, 0, 0);
 468         }
 469         return 0;
 470 }