games/hack/hack.do.c

   1 /* Copyright (c) Stichting Mathematisch Centrum, Amsterdam, 1985. */
   2 /* hack.do.c - version 1.0.3 */
   3 /* $FreeBSD: src/games/hack/hack.do.c,v 1.4 1999/11/16 10:26:36 marcel Exp $ */
   4 /* $DragonFly: src/games/hack/hack.do.c,v 1.5 2006/08/21 19:45:32 pavalos Exp $ */
   5
   6 /* Contains code for 'd', 'D' (drop), '>', '<' (up, down) and 't' (throw) */
   7
   8 #include "hack.h"
   9
  10 extern struct monst youmonst;
  11
  12 static int      drop(struct obj *);
  13 static void     dropy(struct obj *);
  14
  15 int
  16 dodrop(void)
  17 {
  18         return(drop(getobj("0$#", "drop")));
  19 }
  20
  21 static int
  22 drop(struct obj *obj)
  23 {
  24         if(!obj) return(0);
  25         if(obj->olet == '$') {          /* pseudo object */
  26                 long amount = OGOLD(obj);
  27
  28                 if(amount == 0)
  29                         pline("You didn't drop any gold pieces.");
  30                 else {
  31                         mkgold(amount, u.ux, u.uy);
  32                         pline("You dropped %ld gold piece%s.",
  33                                 amount, plur(amount));
  34                         if(Invisible) newsym(u.ux, u.uy);
  35                 }
  36                 free((char *) obj);
  37                 return(1);
  38         }
  39         if(obj->owornmask & (W_ARMOR | W_RING)){
  40                 pline("You cannot drop something you are wearing.");
  41                 return(0);
  42         }
  43         if(obj == uwep) {
  44                 if(uwep->cursed) {
  45                         pline("Your weapon is welded to your hand!");
  46                         return(0);
  47                 }
  48                 setuwep((struct obj *) 0);
  49         }
  50         pline("You dropped %s.", doname(obj));
  51         dropx(obj);
  52         return(1);
  53 }
  54
  55 /* Called in several places - should not produce texts */
  56 void
  57 dropx(struct obj *obj)
  58 {
  59         freeinv(obj);
  60         dropy(obj);
  61 }
  62
  63 static void
  64 dropy(struct obj *obj)
  65 {
  66         if(obj->otyp == CRYSKNIFE)
  67                 obj->otyp = WORM_TOOTH;
  68         obj->ox = u.ux;
  69         obj->oy = u.uy;
  70         obj->nobj = fobj;
  71         fobj = obj;
  72         if(Invisible) newsym(u.ux,u.uy);
  73         subfrombill(obj);
  74         stackobj(obj);
  75 }
  76
  77 /* drop several things */
  78 int
  79 doddrop(void)
  80 {
  81         return(ggetobj("drop", drop, 0));
  82 }
  83
  84 int
  85 dodown(void)
  86 {
  87         if(u.ux != xdnstair || u.uy != ydnstair) {
  88                 pline("You can't go down here.");
  89                 return(0);
  90         }
  91         if(u.ustuck) {
  92                 pline("You are being held, and cannot go down.");
  93                 return(1);
  94         }
  95         if(Levitation) {
  96                 pline("You're floating high above the stairs.");
  97                 return(0);
  98         }
  99
 100         goto_level(dlevel+1, TRUE);
 101         return(1);
 102 }
 103
 104 int
 105 doup(void)
 106 {
 107         if(u.ux != xupstair || u.uy != yupstair) {
 108                 pline("You can't go up here.");
 109                 return(0);
 110         }
 111         if(u.ustuck) {
 112                 pline("You are being held, and cannot go up.");
 113                 return(1);
 114         }
 115         if(!Levitation && inv_weight() + 5 > 0) {
 116                 pline("Your load is too heavy to climb the stairs.");
 117                 return(1);
 118         }
 119
 120         goto_level(dlevel-1, TRUE);
 121         return(1);
 122 }
 123
 124 void
 125 goto_level(int newlevel, boolean at_stairs)
 126 {
 127         int fd;
 128         boolean up = (newlevel < dlevel);
 129
 130         if(newlevel <= 0) done("escaped");    /* in fact < 0 is impossible */
 131         if(newlevel > MAXLEVEL) newlevel = MAXLEVEL;    /* strange ... */
 132         if(newlevel == dlevel) return;        /* this can happen */
 133
 134         glo(dlevel);
 135         fd = creat(lock, FMASK);
 136         if(fd < 0) {
 137                 /*
 138                  * This is not quite impossible: e.g., we may have
 139                  * exceeded our quota. If that is the case then we
 140                  * cannot leave this level, and cannot save either.
 141                  * Another possibility is that the directory was not
 142                  * writable.
 143                  */
 144                 pline("A mysterious force prevents you from going %s.",
 145                         up ? "up" : "down");
 146                 return;
 147         }
 148
 149         if(Punished) unplacebc();
 150         u.utrap = 0;                            /* needed in level_tele */
 151         u.ustuck = 0;                           /* idem */
 152         keepdogs();
 153         seeoff(1);
 154         if(u.uswallow)                          /* idem */
 155                 u.uswldtim = u.uswallow = 0;
 156         flags.nscrinh = 1;
 157         u.ux = FAR;                             /* hack */
 158         inshop();                               /* probably was a trapdoor */
 159
 160         savelev(fd,dlevel);
 161         close(fd);
 162
 163         dlevel = newlevel;
 164         if(maxdlevel < dlevel)
 165                 maxdlevel = dlevel;
 166         glo(dlevel);
 167
 168         if(!level_exists[dlevel])
 169                 mklev();
 170         else {
 171                 if((fd = open(lock,0)) < 0) {
 172                         pline("Cannot open %s .", lock);
 173                         pline("Probably someone removed it.");
 174                         done("tricked");
 175                 }
 176                 getlev(fd, hackpid, dlevel);
 177                 close(fd);
 178         }
 179
 180         if(at_stairs) {
 181             if(up) {
 182                 u.ux = xdnstair;
 183                 u.uy = ydnstair;
 184                 if(!u.ux) {             /* entering a maze from below? */
 185                     u.ux = xupstair;    /* this will confuse the player! */
 186                     u.uy = yupstair;
 187                 }
 188                 if(Punished && !Levitation){
 189                         pline("With great effort you climb the stairs.");
 190                         placebc(1);
 191                 }
 192             } else {
 193                 u.ux = xupstair;
 194                 u.uy = yupstair;
 195                 if(inv_weight() + 5 > 0 || Punished){
 196                         pline("You fall down the stairs.");     /* %% */
 197                         losehp(rnd(3), "fall");
 198                         if(Punished) {
 199                             if(uwep != uball && rn2(3)){
 200                                 pline("... and are hit by the iron ball.");
 201                                 losehp(rnd(20), "iron ball");
 202                             }
 203                             placebc(1);
 204                         }
 205                         selftouch("Falling, you");
 206                 }
 207             }
 208             { struct monst *mtmp = m_at(u.ux, u.uy);
 209               if(mtmp)
 210                 mnexto(mtmp);
 211             }
 212         } else {        /* trapdoor or level_tele */
 213             do {
 214                 u.ux = rnd(COLNO-1);
 215                 u.uy = rn2(ROWNO);
 216             } while(levl[u.ux][u.uy].typ != ROOM ||
 217                         m_at(u.ux,u.uy));
 218             if(Punished){
 219                 if(uwep != uball && !up /* %% */ && rn2(5)){
 220                         pline("The iron ball falls on your head.");
 221                         losehp(rnd(25), "iron ball");
 222                 }
 223                 placebc(1);
 224             }
 225             selftouch("Falling, you");
 226         }
 227         inshop();
 228         initrack();
 229
 230         losedogs();
 231         { struct monst *mtmp;
 232           if((mtmp = m_at(u.ux, u.uy))) mnexto(mtmp);   /* riv05!a3 */
 233         }
 234         flags.nscrinh = 0;
 235         setsee();
 236         seeobjs();      /* make old cadavers disappear - riv05!a3 */
 237         docrt();
 238         pickup(1);
 239         read_engr_at(u.ux,u.uy);
 240 }
 241
 242 int
 243 donull(void)
 244 {
 245         return(1);      /* Do nothing, but let other things happen */
 246 }
 247
 248 int
 249 dopray(void)
 250 {
 251         nomovemsg = "You finished your prayer.";
 252         nomul(-3);
 253         return(1);
 254 }
 255
 256 int
 257 dothrow(void)
 258 {
 259         struct obj *obj;
 260         struct monst *mon;
 261         int tmp;
 262
 263         obj = getobj("#)", "throw");   /* it is also possible to throw food */
 264                                        /* (or jewels, or iron balls ... ) */
 265         if(!obj || !getdir(1))         /* ask "in what direction?" */
 266                 return(0);
 267         if(obj->owornmask & (W_ARMOR | W_RING)){
 268                 pline("You can't throw something you are wearing.");
 269                 return(0);
 270         }
 271
 272         u_wipe_engr(2);
 273
 274         if(obj == uwep){
 275                 if(obj->cursed){
 276                         pline("Your weapon is welded to your hand.");
 277                         return(1);
 278                 }
 279                 if(obj->quan > 1)
 280                         setuwep(splitobj(obj, 1));
 281                 else
 282                         setuwep((struct obj *) 0);
 283         }
 284         else if(obj->quan > 1)
 285                 splitobj(obj, 1);
 286         freeinv(obj);
 287         if(u.uswallow) {
 288                 mon = u.ustuck;
 289                 bhitpos.x = mon->mx;
 290                 bhitpos.y = mon->my;
 291         } else if(u.dz) {
 292           if(u.dz < 0) {
 293             pline("%s hits the ceiling, then falls back on top of your head.",
 294                 Doname(obj));           /* note: obj->quan == 1 */
 295             if(obj->olet == POTION_SYM)
 296                 potionhit(&youmonst, obj);
 297             else {
 298                 if(uarmh) pline("Fortunately, you are wearing a helmet!");
 299                 losehp(uarmh ? 1 : rnd((int)(obj->owt)), "falling object");
 300                 dropy(obj);
 301             }
 302           } else {
 303             pline("%s hits the floor.", Doname(obj));
 304             if(obj->otyp == EXPENSIVE_CAMERA) {
 305                 pline("It is shattered in a thousand pieces!");
 306                 obfree(obj, Null(obj));
 307             } else if(obj->otyp == EGG) {
 308                 pline("\"Splash!\"");
 309                 obfree(obj, Null(obj));
 310             } else if(obj->olet == POTION_SYM) {
 311                 pline("The flask breaks, and you smell a peculiar odor ...");
 312                 potionbreathe(obj);
 313                 obfree(obj, Null(obj));
 314             } else {
 315                 dropy(obj);
 316             }
 317           }
 318           return(1);
 319         } else if(obj->otyp == BOOMERANG) {
 320                 mon = boomhit(u.dx, u.dy);
 321                 if(mon == &youmonst) {          /* the thing was caught */
 322                         addinv(obj);
 323                         return(1);
 324                 }
 325         } else {
 326                 if(obj->otyp == PICK_AXE && shkcatch(obj))
 327                     return(1);
 328
 329                 mon = bhit(u.dx, u.dy, (obj->otyp == ICE_BOX) ? 1 :
 330                         (!Punished || obj != uball) ? 8 : !u.ustuck ? 5 : 1,
 331                         obj->olet, (void (*)(struct monst *, struct obj *)) 0,
 332                         (bool (*)(struct obj *, struct obj *)) 0, obj);
 333         }
 334         if(mon) {
 335                 /* awake monster if sleeping */
 336                 wakeup(mon);
 337
 338                 if(obj->olet == WEAPON_SYM) {
 339                         tmp = -1+u.ulevel+mon->data->ac+abon();
 340                         if(obj->otyp < ROCK) {
 341                                 if(!uwep ||
 342                                     uwep->otyp != obj->otyp+(BOW-ARROW))
 343                                         tmp -= 4;
 344                                 else {
 345                                         tmp += uwep->spe;
 346                                 }
 347                         } else
 348                         if(obj->otyp == BOOMERANG) tmp += 4;
 349                         tmp += obj->spe;
 350                         if(u.uswallow || tmp >= rnd(20)) {
 351                                 if(hmon(mon,obj,1) == TRUE){
 352                                   /* mon still alive */
 353 #ifndef NOWORM
 354                                   cutworm(mon,bhitpos.x,bhitpos.y,obj->otyp);
 355 #endif /* NOWORM */
 356                                 } else mon = 0;
 357                                 /* weapons thrown disappear sometimes */
 358                                 if(obj->otyp < BOOMERANG && rn2(3)) {
 359                                         /* check bill; free */
 360                                         obfree(obj, (struct obj *) 0);
 361                                         return(1);
 362                                 }
 363                         } else miss(objects[obj->otyp].oc_name, mon);
 364                 } else if(obj->otyp == HEAVY_IRON_BALL) {
 365                         tmp = -1+u.ulevel+mon->data->ac+abon();
 366                         if(!Punished || obj != uball) tmp += 2;
 367                         if(u.utrap) tmp -= 2;
 368                         if(u.uswallow || tmp >= rnd(20)) {
 369                                 if(hmon(mon,obj,1) == FALSE)
 370                                         mon = 0;        /* he died */
 371                         } else miss("iron ball", mon);
 372                 } else if(obj->olet == POTION_SYM && u.ulevel > rn2(15)) {
 373                         potionhit(mon, obj);
 374                         return(1);
 375                 } else {
 376                         if(cansee(bhitpos.x,bhitpos.y))
 377                                 pline("You miss %s.",monnam(mon));
 378                         else pline("You miss it.");
 379                         if(obj->olet == FOOD_SYM && mon->data->mlet == 'd')
 380                                 if(tamedog(mon,obj)) return(1);
 381                         if(obj->olet == GEM_SYM && mon->data->mlet == 'u' &&
 382                                 !mon->mtame){
 383                          if(obj->dknown && objects[obj->otyp].oc_name_known){
 384                           if(objects[obj->otyp].g_val > 0){
 385                             u.uluck += 5;
 386                             goto valuable;
 387                           } else {
 388                             pline("%s is not interested in your junk.",
 389                                 Monnam(mon));
 390                           }
 391                          } else { /* value unknown to @ */
 392                             u.uluck++;
 393                         valuable:
 394                             if(u.uluck > LUCKMAX)       /* dan@ut-ngp */
 395                                 u.uluck = LUCKMAX;
 396                             pline("%s graciously accepts your gift.",
 397                                 Monnam(mon));
 398                             mpickobj(mon, obj);
 399                             rloc(mon);
 400                             return(1);
 401                          }
 402                         }
 403                 }
 404         }
 405                 /* the code following might become part of dropy() */
 406         if(obj->otyp == CRYSKNIFE)
 407                 obj->otyp = WORM_TOOTH;
 408         obj->ox = bhitpos.x;
 409         obj->oy = bhitpos.y;
 410         obj->nobj = fobj;
 411         fobj = obj;
 412         /* prevent him from throwing articles to the exit and escaping */
 413         /* subfrombill(obj); */
 414         stackobj(obj);
 415         if(Punished && obj == uball &&
 416                 (bhitpos.x != u.ux || bhitpos.y != u.uy)){
 417                 freeobj(uchain);
 418                 unpobj(uchain);
 419                 if(u.utrap){
 420                         if(u.utraptype == TT_PIT)
 421                                 pline("The ball pulls you out of the pit!");
 422                         else {
 423                             long side =
 424                                 rn2(3) ? LEFT_SIDE : RIGHT_SIDE;
 425                             pline("The ball pulls you out of the bear trap.");
 426                             pline("Your %s leg is severely damaged.",
 427                                 (side == LEFT_SIDE) ? "left" : "right");
 428                             set_wounded_legs(side, 500+rn2(1000));
 429                             losehp(2, "thrown ball");
 430                         }
 431                         u.utrap = 0;
 432                 }
 433                 unsee();
 434                 uchain->nobj = fobj;
 435                 fobj = uchain;
 436                 u.ux = uchain->ox = bhitpos.x - u.dx;
 437                 u.uy = uchain->oy = bhitpos.y - u.dy;
 438                 setsee();
 439                 inshop();
 440         }
 441         if(cansee(bhitpos.x, bhitpos.y)) prl(bhitpos.x,bhitpos.y);
 442         return(1);
 443 }
 444
 445 /* split obj so that it gets size num */
 446 /* remainder is put in the object structure delivered by this call */
 447 struct obj *
 448 splitobj(struct obj *obj, int num)
 449 {
 450 struct obj *otmp;
 451         otmp = newobj(0);
 452         *otmp = *obj;           /* copies whole structure */
 453         otmp->o_id = flags.ident++;
 454         otmp->onamelth = 0;
 455         obj->quan = num;
 456         obj->owt = weight(obj);
 457         otmp->quan -= num;
 458         otmp->owt = weight(otmp);       /* -= obj->owt ? */
 459         obj->nobj = otmp;
 460         if(obj->unpaid) splitbill(obj,otmp);
 461         return(otmp);
 462 }
 463
 464 void
 465 more_experienced(int exp, int rexp)
 466 {
 467         u.uexp += exp;
 468         u.urexp += 4*exp + rexp;
 469         if(exp) flags.botl = 1;
 470         if(u.urexp >= ((pl_character[0] == 'W') ? 1000 : 2000))
 471                 flags.beginner = 0;
 472 }
 473
 474 void
 475 set_wounded_legs(long side, int timex)
 476 {
 477         if(!Wounded_legs || (Wounded_legs & TIMEOUT))
 478                 Wounded_legs |= side + timex;
 479         else
 480                 Wounded_legs |= side;
 481 }
 482
 483 void
 484 heal_legs(void)
 485 {
 486         if(Wounded_legs) {
 487                 if((Wounded_legs & BOTH_SIDES) == BOTH_SIDES)
 488                         pline("Your legs feel somewhat better.");
 489                 else
 490                         pline("Your leg feels somewhat better.");
 491                 Wounded_legs = 0;
 492         }
 493 }