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  * $DragonFly: src/games/sail/dr_1.c,v 1.4 2006/09/03 17:33:13 pavalos Exp $
  32  */
  33
  34 #include "driver.h"
  35
  36 static int fightitout(struct ship *, struct ship *, int);
  37
  38 void
  39 unfoul(void)
  40 {
  41         struct ship *sp;
  42         struct ship *to;
  43         int nat;
  44         int i;
  45
  46         foreachship(sp) {
  47                 if (sp->file->captain[0])
  48                         continue;
  49                 nat = capship(sp)->nationality;
  50                 foreachship(to) {
  51                         if (nat != capship(to)->nationality &&
  52                             !toughmelee(sp, to, 0, 0))
  53                                 continue;
  54                         for (i = fouled2(sp, to); --i >= 0;)
  55                                 if (die() <= 2)
  56                                         cleanfoul(sp, to, 0);
  57                 }
  58         }
  59 }
  60
  61 void
  62 boardcomp(void)
  63 {
  64         int crew[3];
  65         struct ship *sp, *sq;
  66
  67         foreachship(sp) {
  68                 if (*sp->file->captain)
  69                         continue;
  70                 if (sp->file->dir == 0)
  71                         continue;
  72                 if (sp->file->struck || sp->file->captured != 0)
  73                         continue;
  74                 if (!snagged(sp))
  75                         continue;
  76                 crew[0] = sp->specs->crew1 != 0;
  77                 crew[1] = sp->specs->crew2 != 0;
  78                 crew[2] = sp->specs->crew3 != 0;
  79                 foreachship(sq) {
  80                         if (!Xsnagged2(sp, sq))
  81                                 continue;
  82                         if (meleeing(sp, sq))
  83                                 continue;
  84                         if (!sq->file->dir
  85                                 || sp->nationality == capship(sq)->nationality)
  86                                 continue;
  87                         switch (sp->specs->class - sq->specs->class) {
  88                         case -3: case -4: case -5:
  89                                 if (crew[0]) {
  90                                         /* OBP */
  91                                         sendbp(sp, sq, crew[0]*100, 0);
  92                                         crew[0] = 0;
  93                                 } else if (crew[1]) {
  94                                         /* OBP */
  95                                         sendbp(sp, sq, crew[1]*10, 0);
  96                                         crew[1] = 0;
  97                                 }
  98                                 break;
  99                         case -2:
 100                                 if (crew[0] || crew[1]) {
 101                                         /* OBP */
 102                                         sendbp(sp, sq, crew[0]*100+crew[1]*10,
 103                                                 0);
 104                                         crew[0] = crew[1] = 0;
 105                                 }
 106                                 break;
 107                         case -1: case 0: case 1:
 108                                 if (crew[0]) {
 109                                         /* OBP */
 110                                         sendbp(sp, sq, crew[0]*100+crew[1]*10,
 111                                                 0);
 112                                         crew[0] = crew[1] = 0;
 113                                 }
 114                                 break;
 115                         case 2: case 3: case 4: case 5:
 116                                 /* OBP */
 117                                 sendbp(sp, sq, crew[0]*100+crew[1]*10+crew[2],
 118                                         0);
 119                                 crew[0] = crew[1] = crew[2] = 0;
 120                                 break;
 121                         }
 122                 }
 123         }
 124 }
 125
 126 static int
 127 fightitout(struct ship *from, struct ship *to, int key)
 128 {
 129         struct ship *fromcap, *tocap;
 130         int crewfrom[3], crewto[3], menfrom, mento;
 131         int pcto, pcfrom, fromstrength, strengthto, frominjured, toinjured;
 132         int topoints;
 133         int idx, totalfrom = 0, totalto = 0;
 134         int count;
 135         char message[60];
 136
 137         menfrom = mensent(from, to, crewfrom, &fromcap, &pcfrom, key);
 138         mento = mensent(to, from, crewto, &tocap, &pcto, 0);
 139         if (fromcap == 0)
 140                 fromcap = from;
 141         if (tocap == 0)
 142                 tocap = to;
 143         if (key) {
 144                 if (!menfrom) {          /* if crew surprised */
 145                         if (fromcap == from)
 146                                 menfrom = from->specs->crew1
 147                                         + from->specs->crew2
 148                                         + from->specs->crew3;
 149                         else
 150                                 menfrom = from->file->pcrew;
 151                 } else {
 152                         menfrom *= 2;   /* DBP's fight at an advantage */
 153                 }
 154         }
 155         fromstrength = menfrom * fromcap->specs->qual;
 156         strengthto = mento * tocap->specs->qual;
 157         for (count = 0;
 158              ((fromstrength < strengthto * 3 && strengthto < fromstrength * 3)
 159               || fromstrength == -1) && count < 4;
 160              count++) {
 161                 idx = fromstrength/10;
 162                 if (idx > 8)
 163                         idx = 8;
 164                 toinjured = MT[idx][2 - die() / 3];
 165                 totalto += toinjured;
 166                 idx = strengthto/10;
 167                 if (idx > 8)
 168                         idx = 8;
 169                 frominjured = MT[idx][2 - die() / 3];
 170                 totalfrom += frominjured;
 171                 menfrom -= frominjured;
 172                 mento -= toinjured;
 173                 fromstrength = menfrom * fromcap->specs->qual;
 174                 strengthto = mento * tocap->specs->qual;
 175         }
 176         if (fromstrength >= strengthto * 3 || count == 4) {
 177                 unboard(to, from, 0);
 178                 subtract(from, totalfrom, crewfrom, fromcap, pcfrom);
 179                 subtract(to, totalto, crewto, tocap, pcto);
 180                 makesignal(from, "boarders from %s repelled", to);
 181                 sprintf(message, "killed in melee: %d.  %s: %d",
 182                         totalto, from->shipname, totalfrom);
 183                 Writestr(W_SIGNAL, to, message);
 184                 if (key)
 185                         return 1;
 186         } else if (strengthto >= fromstrength * 3) {
 187                 unboard(from, to, 0);
 188                 subtract(from, totalfrom, crewfrom, fromcap, pcfrom);
 189                 subtract(to, totalto, crewto, tocap, pcto);
 190                 if (key) {
 191                         if (fromcap != from)
 192                                 Write(W_POINTS, fromcap,
 193                                         fromcap->file->points -
 194                                                 from->file->struck
 195                                                 ? from->specs->pts
 196                                                 : 2 * from->specs->pts,
 197                                         0, 0, 0);
 198
 199 /* ptr1 points to the shipspec for the ship that was just unboarded.
 200    I guess that what is going on here is that the pointer is multiplied
 201    or something. */
 202
 203                         Write(W_CAPTURED, from, to->file->index, 0, 0, 0);
 204                         topoints = 2 * from->specs->pts + to->file->points;
 205                         if (from->file->struck)
 206                                 topoints -= from->specs->pts;
 207                         Write(W_POINTS, to, topoints, 0, 0, 0);
 208                         mento = crewto[0] ? crewto[0] : crewto[1];
 209                         if (mento) {
 210                                 subtract(to, mento, crewto, tocap, pcto);
 211                                 subtract(from, - mento, crewfrom, to, 0);
 212                         }
 213                         sprintf(message, "captured by the %s!",
 214                                 to->shipname);
 215                         Writestr(W_SIGNAL, from, message);
 216                         sprintf(message, "killed in melee: %d.  %s: %d",
 217                                 totalto, from->shipname, totalfrom);
 218                         Writestr(W_SIGNAL, to, message);
 219                         mento = 0;
 220                         return 0;
 221                 }
 222         }
 223         return 0;
 224 }
 225
 226 void
 227 resolve(void)
 228 {
 229         int thwart;
 230         struct ship *sp, *sq;
 231
 232         foreachship(sp) {
 233                 if (sp->file->dir == 0)
 234                         continue;
 235                 for (sq = sp + 1; sq < ls; sq++)
 236                         if (sq->file->dir && meleeing(sp, sq) &&
 237                             meleeing(sq, sp))
 238                                 fightitout(sp, sq, 0);
 239                 thwart = 2;
 240                 foreachship(sq) {
 241                         if (sq->file->dir && meleeing(sq, sp))
 242                                 thwart = fightitout(sp, sq, 1);
 243                         if (!thwart)
 244                                 break;
 245                 }
 246                 if (!thwart) {
 247                         foreachship(sq) {
 248                                 if (sq->file->dir && meleeing(sq, sp))
 249                                         unboard(sq, sp, 0);
 250                                 unboard(sp, sq, 0);
 251                         }
 252                         unboard(sp, sp, 1);
 253                 } else if (thwart == 2)
 254                         unboard(sp, sp, 1);
 255         }
 256 }
 257
 258 void
 259 compcombat(void)
 260 {
 261         int n;
 262         struct ship *sp;
 263         struct ship *closest;
 264         int crew[3], men = 0, target, temp;
 265         int r, guns, ready, load, car;
 266         int idx, rakehim, sternrake;
 267         int shootat, hit;
 268
 269         foreachship(sp) {
 270                 if (sp->file->captain[0] || sp->file->dir == 0)
 271                         continue;
 272                 crew[0] = sp->specs->crew1;
 273                 crew[1] = sp->specs->crew2;
 274                 crew[2] = sp->specs->crew3;
 275                 for (n = 0; n < 3; n++) {
 276                         if (sp->file->OBP[n].turnsent)
 277                                 men += sp->file->OBP[n].mensent;
 278                 }
 279                 for (n = 0; n < 3; n++) {
 280                         if (sp->file->DBP[n].turnsent)
 281                                 men += sp->file->DBP[n].mensent;
 282                 }
 283                 if (men) {
 284                         crew[0] = men/100 ? 0 : crew[0] != 0;
 285                         crew[1] = (men%100)/10 ? 0 : crew[1] != 0;
 286                         crew[2] = men%10 ? 0 : crew[2] != 0;
 287                 }
 288                 for (r = 0; r < 2; r++) {
 289                         if (!crew[2])
 290                                 continue;
 291                         if (sp->file->struck)
 292                                 continue;
 293                         if (r) {
 294                                 ready = sp->file->readyR;
 295                                 guns = sp->specs->gunR;
 296                                 car = sp->specs->carR;
 297                         } else {
 298                                 ready = sp->file->readyL;
 299                                 guns = sp->specs->gunL;
 300                                 car = sp->specs->carL;
 301                         }
 302                         if (!guns && !car)
 303                                 continue;
 304                         if ((ready & R_LOADED) == 0)
 305                                 continue;
 306                         closest = closestenemy(sp, r ? 'r' : 'l', 0);
 307                         if (closest == 0)
 308                                 continue;
 309                         if (range(closest, sp) >
 310                             range(sp, closestenemy(sp, r ? 'r' : 'l', 1)))
 311                                 continue;
 312                         if (closest->file->struck)
 313                                 continue;
 314                         target = range(sp, closest);
 315                         if (target > 10)
 316                                 continue;
 317                         if (!guns && target >= 3)
 318                                 continue;
 319                         load = L_ROUND;
 320                         if (target == 1 && sp->file->loadwith == L_GRAPE)
 321                                 load = L_GRAPE;
 322                         if (target <= 3 && closest->file->FS)
 323                                 load = L_CHAIN;
 324                         if (target == 1 && load != L_GRAPE)
 325                                 load = L_DOUBLE;
 326                         if (load > L_CHAIN && target < 6)
 327                                 shootat = HULL;
 328                         else
 329                                 shootat = RIGGING;
 330                         rakehim = gunsbear(sp, closest)
 331                                 && !gunsbear(closest, sp);
 332                         temp = portside(closest, sp, 1)
 333                                 - closest->file->dir + 1;
 334                         if (temp < 1)
 335                                 temp += 8;
 336                         if (temp > 8)
 337                                 temp -= 8;
 338                         sternrake = temp > 4 && temp < 6;
 339                         idx = guns;
 340                         if (target < 3)
 341                                 idx += car;
 342                         idx = (idx - 1) / 3;
 343                         idx = idx > 8 ? 8 : idx;
 344                         if (!rakehim)
 345                                 hit = HDT[idx][target-1];
 346                         else
 347                                 hit = HDTrake[idx][target-1];
 348                         if (rakehim && sternrake)
 349                                 hit++;
 350                         hit += QUAL[idx][capship(sp)->specs->qual - 1];
 351                         for (n = 0; n < 3 && sp->file->captured == 0; n++) {
 352                                 if (!crew[n]) {
 353                                         if (idx <= 5)
 354                                                 hit--;
 355                                         else
 356                                                 hit -= 2;
 357                                 }
 358                         }
 359                         if (ready & R_INITIAL) {
 360                                 if (!r)
 361                                         sp->file->readyL &= ~R_INITIAL;
 362                                 else
 363                                         sp->file->readyR &= ~R_INITIAL;
 364                                 if (idx <= 3)
 365                                         hit++;
 366                                 else
 367                                         hit += 2;
 368                         }
 369                         if (sp->file->captured != 0) {
 370                                 if (idx <= 1)
 371                                         hit--;
 372                                 else
 373                                         hit -= 2;
 374                         }
 375                         hit += AMMO[idx][load - 1];
 376                         temp = sp->specs->class;
 377                         if ((temp >= 5 || temp == 1) && windspeed == 5)
 378                                 hit--;
 379                         if (windspeed == 6 && temp == 4)
 380                                 hit -= 2;
 381                         if (windspeed == 6 && temp <= 3)
 382                                 hit--;
 383                         if (hit >= 0) {
 384                                 if (load != L_GRAPE)
 385                                         hit = hit > 10 ? 10 : hit;
 386                                 table(shootat, load, hit, closest, sp, die());
 387                         }
 388                 }
 389         }
 390 }
 391
 392 int
 393 next(void)
 394 {
 395         if (++turn % 55 == 0) {
 396                 if (alive)
 397                         alive = 0;
 398                 else
 399                         people = 0;
 400         }
 401         if (people <= 0 || windspeed == 7) {
 402                 struct ship *s;
 403                 struct ship *bestship = NULL;
 404                 float net, best = 0.0;
 405                 foreachship(s) {
 406                         if (*s->file->captain)
 407                                 continue;
 408                         net = (float)s->file->points / s->specs->pts;
 409                         if (net > best) {
 410                                 best = net;
 411                                 bestship = s;
 412                         }
 413                 }
 414                 if (best > 0.0) {
 415                         char *p = getenv("WOTD");
 416                         if (p == 0) {
 417                                 char buf[6] = "Driver";
 418                                 p = buf;
 419                         }
 420                         if (islower(*p))
 421                                 *p = toupper(*p);
 422                         strncpy(bestship->file->captain, p,
 423                                 sizeof bestship->file->captain);
 424                         bestship->file->captain
 425                                 [sizeof bestship->file->captain - 1] = 0;
 426                         write_log(bestship);
 427                 }
 428                 return -1;
 429         }
 430         Write(W_TURN, SHIP(0), turn, 0, 0, 0);
 431         if (turn % 7 == 0 && (die() >= cc->windchange || !windspeed)) {
 432                 switch (die()) {
 433                 case 1:
 434                         winddir = 1;
 435                         break;
 436                 case 2:
 437                         break;
 438                 case 3:
 439                         winddir++;
 440                         break;
 441                 case 4:
 442                         winddir--;
 443                         break;
 444                 case 5:
 445                         winddir += 2;
 446                         break;
 447                 case 6:
 448                         winddir -= 2;
 449                         break;
 450                 }
 451                 if (winddir > 8)
 452                         winddir -= 8;
 453                 if (winddir < 1)
 454                         winddir += 8;
 455                 if (windspeed)
 456                         switch (die()) {
 457                         case 1:
 458                         case 2:
 459                                 windspeed--;
 460                                 break;
 461                         case 5:
 462                         case 6:
 463                                 windspeed++;
 464                                 break;
 465                         }
 466                 else
 467                         windspeed++;
 468                 Write(W_WIND, SHIP(0), winddir, windspeed, 0, 0);
 469         }
 470         return 0;
 471 }