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. 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  * @(#)dr_1.c   8.1 (Berkeley) 5/31/93
  34  * $FreeBSD: src/games/sail/dr_1.c,v 1.7 1999/11/30 03:49:32 billf Exp $
  35  * $DragonFly: src/games/sail/dr_1.c,v 1.4 2006/09/03 17:33:13 pavalos Exp $
  36  */
  37
  38 #include "driver.h"
  39
  40 static int      fightitout(struct ship *, struct ship *, int);
  41
  42 void
  43 unfoul(void)
  44 {
  45         struct ship *sp;
  46         struct ship *to;
  47         int nat;
  48         int i;
  49
  50         foreachship(sp) {
  51                 if (sp->file->captain[0])
  52                         continue;
  53                 nat = capship(sp)->nationality;
  54                 foreachship(to) {
  55                         if (nat != capship(to)->nationality &&
  56                             !toughmelee(sp, to, 0, 0))
  57                                 continue;
  58                         for (i = fouled2(sp, to); --i >= 0;)
  59                                 if (die() <= 2)
  60                                         cleanfoul(sp, to, 0);
  61                 }
  62         }
  63 }
  64
  65 void
  66 boardcomp(void)
  67 {
  68         int crew[3];
  69         struct ship *sp, *sq;
  70
  71         foreachship(sp) {
  72                 if (*sp->file->captain)
  73                         continue;
  74                 if (sp->file->dir == 0)
  75                         continue;
  76                 if (sp->file->struck || sp->file->captured != 0)
  77                         continue;
  78                 if (!snagged(sp))
  79                         continue;
  80                 crew[0] = sp->specs->crew1 != 0;
  81                 crew[1] = sp->specs->crew2 != 0;
  82                 crew[2] = sp->specs->crew3 != 0;
  83                 foreachship(sq) {
  84                         if (!Xsnagged2(sp, sq))
  85                                 continue;
  86                         if (meleeing(sp, sq))
  87                                 continue;
  88                         if (!sq->file->dir
  89                                 || sp->nationality == capship(sq)->nationality)
  90                                 continue;
  91                         switch (sp->specs->class - sq->specs->class) {
  92                         case -3: case -4: case -5:
  93                                 if (crew[0]) {
  94                                         /* OBP */
  95                                         sendbp(sp, sq, crew[0]*100, 0);
  96                                         crew[0] = 0;
  97                                 } else if (crew[1]){
  98                                         /* OBP */
  99                                         sendbp(sp, sq, crew[1]*10, 0);
 100                                         crew[1] = 0;
 101                                 }
 102                                 break;
 103                         case -2:
 104                                 if (crew[0] || crew[1]) {
 105                                         /* OBP */
 106                                         sendbp(sp, sq, crew[0]*100+crew[1]*10,
 107                                                 0);
 108                                         crew[0] = crew[1] = 0;
 109                                 }
 110                                 break;
 111                         case -1: case 0: case 1:
 112                                 if (crew[0]) {
 113                                         /* OBP */
 114                                         sendbp(sp, sq, crew[0]*100+crew[1]*10,
 115                                                 0);
 116                                         crew[0] = crew[1] = 0;
 117                                 }
 118                                 break;
 119                         case 2: case 3: case 4: case 5:
 120                                 /* OBP */
 121                                 sendbp(sp, sq, crew[0]*100+crew[1]*10+crew[2],
 122                                         0);
 123                                 crew[0] = crew[1] = crew[2] = 0;
 124                                 break;
 125                         }
 126                 }
 127         }
 128 }
 129
 130 static int
 131 fightitout(struct ship *from, struct ship *to, int key)
 132 {
 133         struct ship *fromcap, *tocap;
 134         int crewfrom[3], crewto[3], menfrom, mento;
 135         int pcto, pcfrom, fromstrength, strengthto, frominjured, toinjured;
 136         int topoints;
 137         int idx, totalfrom = 0, totalto = 0;
 138         int count;
 139         char message[60];
 140
 141         menfrom = mensent(from, to, crewfrom, &fromcap, &pcfrom, key);
 142         mento = mensent(to, from, crewto, &tocap, &pcto, 0);
 143         if (fromcap == 0)
 144                 fromcap = from;
 145         if (tocap == 0)
 146                 tocap = to;
 147         if (key) {
 148                 if (!menfrom) {          /* if crew surprised */
 149                         if (fromcap == from)
 150                                 menfrom = from->specs->crew1
 151                                         + from->specs->crew2
 152                                         + from->specs->crew3;
 153                         else
 154                                 menfrom = from->file->pcrew;
 155                 } else {
 156                         menfrom *= 2;   /* DBP's fight at an advantage */
 157                 }
 158         }
 159         fromstrength = menfrom * fromcap->specs->qual;
 160         strengthto = mento * tocap->specs->qual;
 161         for (count = 0;
 162              ((fromstrength < strengthto * 3 && strengthto < fromstrength * 3)
 163               || fromstrength == -1) && count < 4;
 164              count++) {
 165                 idx = fromstrength/10;
 166                 if (idx > 8)
 167                         idx = 8;
 168                 toinjured = MT[idx][2 - die() / 3];
 169                 totalto += toinjured;
 170                 idx = strengthto/10;
 171                 if (idx > 8)
 172                         idx = 8;
 173                 frominjured = MT[idx][2 - die() / 3];
 174                 totalfrom += frominjured;
 175                 menfrom -= frominjured;
 176                 mento -= toinjured;
 177                 fromstrength = menfrom * fromcap->specs->qual;
 178                 strengthto = mento * tocap->specs->qual;
 179         }
 180         if (fromstrength >= strengthto * 3 || count == 4) {
 181                 unboard(to, from, 0);
 182                 subtract(from, totalfrom, crewfrom, fromcap, pcfrom);
 183                 subtract(to, totalto, crewto, tocap, pcto);
 184                 makesignal(from, "boarders from %s repelled", to);
 185                 sprintf(message, "killed in melee: %d.  %s: %d",
 186                         totalto, from->shipname, totalfrom);
 187                 Write(W_SIGNAL, to, 1, (long) message, 0, 0, 0);
 188                 if (key)
 189                         return 1;
 190         } else if (strengthto >= fromstrength * 3) {
 191                 unboard(from, to, 0);
 192                 subtract(from, totalfrom, crewfrom, fromcap, pcfrom);
 193                 subtract(to, totalto, crewto, tocap, pcto);
 194                 if (key) {
 195                         if (fromcap != from)
 196                                 Write(W_POINTS, fromcap, 0,
 197                                         fromcap->file->points -
 198                                                 from->file->struck
 199                                                 ? from->specs->pts
 200                                                 : 2 * from->specs->pts,
 201                                         0, 0, 0);
 202
 203 /* ptr1 points to the shipspec for the ship that was just unboarded.
 204    I guess that what is going on here is that the pointer is multiplied
 205    or something. */
 206
 207                         Write(W_CAPTURED, from, 0, to->file->index, 0, 0, 0);
 208                         topoints = 2 * from->specs->pts + to->file->points;
 209                         if (from->file->struck)
 210                                 topoints -= from->specs->pts;
 211                         Write(W_POINTS, to, 0, topoints, 0, 0, 0);
 212                         mento = crewto[0] ? crewto[0] : crewto[1];
 213                         if (mento) {
 214                                 subtract(to, mento, crewto, tocap, pcto);
 215                                 subtract(from, - mento, crewfrom, to, 0);
 216                         }
 217                         sprintf(message, "captured by the %s!",
 218                                 to->shipname);
 219                         Write(W_SIGNAL, from, 1, (long) message, 0, 0, 0);
 220                         sprintf(message, "killed in melee: %d.  %s: %d",
 221                                 totalto, from->shipname, totalfrom);
 222                         Write(W_SIGNAL, to, 1, (long) message, 0, 0, 0);
 223                         mento = 0;
 224                         return 0;
 225                 }
 226         }
 227         return 0;
 228 }
 229
 230 void
 231 resolve(void)
 232 {
 233         int thwart;
 234         struct ship *sp, *sq;
 235
 236         foreachship(sp) {
 237                 if (sp->file->dir == 0)
 238                         continue;
 239                 for (sq = sp + 1; sq < ls; sq++)
 240                         if (sq->file->dir && meleeing(sp, sq) && meleeing(sq, sp))
 241                                 fightitout(sp, sq, 0);
 242                 thwart = 2;
 243                 foreachship(sq) {
 244                         if (sq->file->dir && meleeing(sq, sp))
 245                                 thwart = fightitout(sp, sq, 1);
 246                         if (!thwart)
 247                                 break;
 248                 }
 249                 if (!thwart) {
 250                         foreachship(sq) {
 251                                 if (sq->file->dir && meleeing(sq, sp))
 252                                         unboard(sq, sp, 0);
 253                                 unboard(sp, sq, 0);
 254                         }
 255                         unboard(sp, sp, 1);
 256                 } else if (thwart == 2)
 257                         unboard(sp, sp, 1);
 258         }
 259 }
 260
 261 void
 262 compcombat(void)
 263 {
 264         int n;
 265         struct ship *sp;
 266         struct ship *closest;
 267         int crew[3], men = 0, target, temp;
 268         int r, guns, ready, load, car;
 269         int idx, rakehim, sternrake;
 270         int shootat, hit;
 271
 272         foreachship(sp) {
 273                 if (sp->file->captain[0] || sp->file->dir == 0)
 274                         continue;
 275                 crew[0] = sp->specs->crew1;
 276                 crew[1] = sp->specs->crew2;
 277                 crew[2] = sp->specs->crew3;
 278                 for (n = 0; n < 3; n++) {
 279                         if (sp->file->OBP[n].turnsent)
 280                                 men += sp->file->OBP[n].mensent;
 281                 }
 282                 for (n = 0; n < 3; n++) {
 283                         if (sp->file->DBP[n].turnsent)
 284                                 men += sp->file->DBP[n].mensent;
 285                 }
 286                 if (men){
 287                         crew[0] = men/100 ? 0 : crew[0] != 0;
 288                         crew[1] = (men%100)/10 ? 0 : crew[1] != 0;
 289                         crew[2] = men%10 ? 0 : crew[2] != 0;
 290                 }
 291                 for (r = 0; r < 2; r++) {
 292                         if (!crew[2])
 293                                 continue;
 294                         if (sp->file->struck)
 295                                 continue;
 296                         if (r) {
 297                                 ready = sp->file->readyR;
 298                                 guns = sp->specs->gunR;
 299                                 car = sp->specs->carR;
 300                         } else {
 301                                 ready = sp->file->readyL;
 302                                 guns = sp->specs->gunL;
 303                                 car = sp->specs->carL;
 304                         }
 305                         if (!guns && !car)
 306                                 continue;
 307                         if ((ready & R_LOADED) == 0)
 308                                 continue;
 309                         closest = closestenemy(sp, r ? 'r' : 'l', 0);
 310                         if (closest == 0)
 311                                 continue;
 312                         if (range(closest, sp) > range(sp, closestenemy(sp, r ? 'r' : 'l', 1)))
 313                                 continue;
 314                         if (closest->file->struck)
 315                                 continue;
 316                         target = range(sp, closest);
 317                         if (target > 10)
 318                                 continue;
 319                         if (!guns && target >= 3)
 320                                 continue;
 321                         load = L_ROUND;
 322                         if (target == 1 && sp->file->loadwith == L_GRAPE)
 323                                 load = L_GRAPE;
 324                         if (target <= 3 && closest->file->FS)
 325                                 load = L_CHAIN;
 326                         if (target == 1 && load != L_GRAPE)
 327                                 load = L_DOUBLE;
 328                         if (load > L_CHAIN && target < 6)
 329                                 shootat = HULL;
 330                         else
 331                                 shootat = RIGGING;
 332                         rakehim = gunsbear(sp, closest)
 333                                 && !gunsbear(closest, sp);
 334                         temp = portside(closest, sp, 1)
 335                                 - closest->file->dir + 1;
 336                         if (temp < 1)
 337                                 temp += 8;
 338                         if (temp > 8)
 339                                 temp -= 8;
 340                         sternrake = temp > 4 && temp < 6;
 341                         idx = guns;
 342                         if (target < 3)
 343                                 idx += car;
 344                         idx = (idx - 1) / 3;
 345                         idx = idx > 8 ? 8 : idx;
 346                         if (!rakehim)
 347                                 hit = HDT[idx][target-1];
 348                         else
 349                                 hit = HDTrake[idx][target-1];
 350                         if (rakehim && sternrake)
 351                                 hit++;
 352                         hit += QUAL[idx][capship(sp)->specs->qual - 1];
 353                         for (n = 0; n < 3 && sp->file->captured == 0; n++)
 354                                 if (!crew[n]) {
 355                                         if (idx <= 5)
 356                                                 hit--;
 357                                         else
 358                                                 hit -= 2;
 359                                 }
 360                         if (ready & R_INITIAL) {
 361                                 if (!r)
 362                                         sp->file->readyL &= ~R_INITIAL;
 363                                 else
 364                                         sp->file->readyR &= ~R_INITIAL;
 365                                 if (idx <= 3)
 366                                         hit++;
 367                                 else
 368                                         hit += 2;
 369                         }
 370                         if (sp->file->captured != 0) {
 371                                 if (idx <= 1)
 372                                         hit--;
 373                                 else
 374                                         hit -= 2;
 375                         }
 376                         hit += AMMO[idx][load - 1];
 377                         temp = sp->specs->class;
 378                         if ((temp >= 5 || temp == 1) && windspeed == 5)
 379                                 hit--;
 380                         if (windspeed == 6 && temp == 4)
 381                                 hit -= 2;
 382                         if (windspeed == 6 && temp <= 3)
 383                                 hit--;
 384                         if (hit >= 0) {
 385                                 if (load != L_GRAPE)
 386                                         hit = hit > 10 ? 10 : hit;
 387                                 table(shootat, load, hit, closest, sp, die());
 388                         }
 389                 }
 390         }
 391 }
 392
 393 int
 394 next(void)
 395 {
 396         if (++turn % 55 == 0) {
 397                 if (alive)
 398                         alive = 0;
 399                 else
 400                         people = 0;
 401         }
 402         if (people <= 0 || windspeed == 7) {
 403                 struct ship *s;
 404                 struct ship *bestship = NULL;
 405                 float net, best = 0.0;
 406                 foreachship(s) {
 407                         if (*s->file->captain)
 408                                 continue;
 409                         net = (float)s->file->points / s->specs->pts;
 410                         if (net > best) {
 411                                 best = net;
 412                                 bestship = s;
 413                         }
 414                 }
 415                 if (best > 0.0) {
 416                         char *p = getenv("WOTD");
 417                         if (p == 0) {
 418                                 char buf[6] = "Driver";
 419                                 p = buf;
 420                         }
 421                         if (islower(*p))
 422                                 *p = toupper(*p);
 423                         strncpy(bestship->file->captain, p,
 424                                 sizeof bestship->file->captain);
 425                         bestship->file->captain
 426                                 [sizeof bestship->file->captain - 1] = 0;
 427                         write_log(bestship);
 428                 }
 429                 return -1;
 430         }
 431         Write(W_TURN, SHIP(0), 0, turn, 0, 0, 0);
 432         if (turn % 7 == 0 && (die() >= cc->windchange || !windspeed)) {
 433                 switch (die()) {
 434                 case 1:
 435                         winddir = 1;
 436                         break;
 437                 case 2:
 438                         break;
 439                 case 3:
 440                         winddir++;
 441                         break;
 442                 case 4:
 443                         winddir--;
 444                         break;
 445                 case 5:
 446                         winddir += 2;
 447                         break;
 448                 case 6:
 449                         winddir -= 2;
 450                         break;
 451                 }
 452                 if (winddir > 8)
 453                         winddir -= 8;
 454                 if (winddir < 1)
 455                         winddir += 8;
 456                 if (windspeed)
 457                         switch (die()) {
 458                         case 1:
 459                         case 2:
 460                                 windspeed--;
 461                                 break;
 462                         case 5:
 463                         case 6:
 464                                 windspeed++;
 465                                 break;
 466                         }
 467                 else
 468                         windspeed++;
 469                 Write(W_WIND, SHIP(0), 0, winddir, windspeed, 0, 0);
 470         }
 471         return 0;
 472 }