hack/hack.dog.c

   1 /* Copyright (c) Stichting Mathematisch Centrum, Amsterdam, 1985. */
   2 /* hack.dog.c - version 1.0.3 */
   3
   4 #include        "hack.h"
   5 #include        "hack.mfndpos.h"
   6 extern struct monst *makemon();
   7 #include "def.edog.h"
   8 #include "def.mkroom.h"
   9
  10 struct permonst li_dog =
  11         { "little dog", 'd',2,18,6,1,6,sizeof(struct edog) };
  12 struct permonst dog =
  13         { "dog", 'd',4,16,5,1,6,sizeof(struct edog) };
  14 struct permonst la_dog =
  15         { "large dog", 'd',6,15,4,2,4,sizeof(struct edog) };
  16
  17
  18 makedog(){
  19 register struct monst *mtmp = makemon(&li_dog,u.ux,u.uy);
  20         if(!mtmp) return; /* dogs were genocided */
  21         initedog(mtmp);
  22 }
  23
  24 initedog(mtmp) register struct monst *mtmp; {
  25         mtmp->mtame = mtmp->mpeaceful = 1;
  26         EDOG(mtmp)->hungrytime = 1000 + moves;
  27         EDOG(mtmp)->eattime = 0;
  28         EDOG(mtmp)->droptime = 0;
  29         EDOG(mtmp)->dropdist = 10000;
  30         EDOG(mtmp)->apport = 10;
  31         EDOG(mtmp)->whistletime = 0;
  32 }
  33
  34 /* attach the monsters that went down (or up) together with @ */
  35 struct monst *mydogs = 0;
  36 struct monst *fallen_down = 0;  /* monsters that fell through a trapdoor */
  37         /* they will appear on the next level @ goes to, even if he goes up! */
  38
  39 losedogs(){
  40 register struct monst *mtmp;
  41         while(mtmp = mydogs){
  42                 mydogs = mtmp->nmon;
  43                 mtmp->nmon = fmon;
  44                 fmon = mtmp;
  45                 mnexto(mtmp);
  46         }
  47         while(mtmp = fallen_down){
  48                 fallen_down = mtmp->nmon;
  49                 mtmp->nmon = fmon;
  50                 fmon = mtmp;
  51                 rloc(mtmp);
  52         }
  53 }
  54
  55 keepdogs(){
  56 register struct monst *mtmp;
  57         for(mtmp = fmon; mtmp; mtmp = mtmp->nmon)
  58             if(dist(mtmp->mx,mtmp->my) < 3 && follower(mtmp)
  59                 && !mtmp->msleep && !mtmp->mfroz) {
  60                 relmon(mtmp);
  61                 mtmp->nmon = mydogs;
  62                 mydogs = mtmp;
  63                 unpmon(mtmp);
  64                 keepdogs();     /* we destroyed the link, so use recursion */
  65                 return;         /* (admittedly somewhat primitive) */
  66         }
  67 }
  68
  69 fall_down(mtmp) register struct monst *mtmp; {
  70         relmon(mtmp);
  71         mtmp->nmon = fallen_down;
  72         fallen_down = mtmp;
  73         unpmon(mtmp);
  74         mtmp->mtame = 0;
  75 }
  76
  77 /* return quality of food; the lower the better */
  78 #define DOGFOOD 0
  79 #define CADAVER 1
  80 #define ACCFOOD 2
  81 #define MANFOOD 3
  82 #define APPORT  4
  83 #define POISON  5
  84 #define UNDEF   6
  85 dogfood(obj) register struct obj *obj; {
  86         switch(obj->olet) {
  87         case FOOD_SYM:
  88             return(
  89                 (obj->otyp == TRIPE_RATION) ? DOGFOOD :
  90                 (obj->otyp < CARROT) ? ACCFOOD :
  91                 (obj->otyp < CORPSE) ? MANFOOD :
  92                 (poisonous(obj) || obj->age + 50 <= moves ||
  93                     obj->otyp == DEAD_COCKATRICE)
  94                         ? POISON : CADAVER
  95             );
  96         default:
  97             if(!obj->cursed) return(APPORT);
  98             /* fall into next case */
  99         case BALL_SYM:
 100         case CHAIN_SYM:
 101         case ROCK_SYM:
 102             return(UNDEF);
 103         }
 104 }
 105
 106 /* return 0 (no move), 1 (move) or 2 (dead) */
 107 dog_move(mtmp, after) register struct monst *mtmp; {
 108 register int nx,ny,omx,omy,appr,nearer,j;
 109 int udist,chi,i,whappr;
 110 register struct monst *mtmp2;
 111 register struct permonst *mdat = mtmp->data;
 112 register struct edog *edog = EDOG(mtmp);
 113 struct obj *obj;
 114 struct trap *trap;
 115 xchar cnt,chcnt,nix,niy;
 116 schar dogroom,uroom;
 117 xchar gx,gy,gtyp,otyp;  /* current goal */
 118 coord poss[9];
 119 int info[9];
 120 #define GDIST(x,y) ((x-gx)*(x-gx) + (y-gy)*(y-gy))
 121 #define DDIST(x,y) ((x-omx)*(x-omx) + (y-omy)*(y-omy))
 122
 123         if(moves <= edog->eattime) return(0);   /* dog is still eating */
 124         omx = mtmp->mx;
 125         omy = mtmp->my;
 126         whappr = (moves - EDOG(mtmp)->whistletime < 5);
 127         if(moves > edog->hungrytime + 500 && !mtmp->mconf){
 128                 mtmp->mconf = 1;
 129                 mtmp->mhpmax /= 3;
 130                 if(mtmp->mhp > mtmp->mhpmax)
 131                         mtmp->mhp = mtmp->mhpmax;
 132                 if(cansee(omx,omy))
 133                         pline("%s is confused from hunger.", Monnam(mtmp));
 134                 else    pline("You feel worried about %s.", monnam(mtmp));
 135         } else
 136         if(moves > edog->hungrytime + 750 || mtmp->mhp < 1){
 137                 if(cansee(omx,omy))
 138                         pline("%s dies from hunger.", Monnam(mtmp));
 139                 else
 140                 pline("You have a sad feeling for a moment, then it passes.");
 141                 mondied(mtmp);
 142                 return(2);
 143         }
 144         dogroom = inroom(omx,omy);
 145         uroom = inroom(u.ux,u.uy);
 146         udist = dist(omx,omy);
 147
 148         /* maybe we tamed him while being swallowed --jgm */
 149         if(!udist) return(0);
 150
 151         /* if we are carrying sth then we drop it (perhaps near @) */
 152         /* Note: if apport == 1 then our behaviour is independent of udist */
 153         if(mtmp->minvent){
 154                 if(!rn2(udist) || !rn2((int) edog->apport))
 155                 if(rn2(10) < edog->apport){
 156                         relobj(mtmp, (int) mtmp->minvis);
 157                         if(edog->apport > 1) edog->apport--;
 158                         edog->dropdist = udist;         /* hpscdi!jon */
 159                         edog->droptime = moves;
 160                 }
 161         } else {
 162                 if(obj = o_at(omx,omy)) if(!index("0_", obj->olet)){
 163                     if((otyp = dogfood(obj)) <= CADAVER){
 164                         nix = omx;
 165                         niy = omy;
 166                         goto eatobj;
 167                     }
 168                     if(obj->owt < 10*mtmp->data->mlevel)
 169                     if(rn2(20) < edog->apport+3)
 170                     if(rn2(udist) || !rn2((int) edog->apport)){
 171                         freeobj(obj);
 172                         unpobj(obj);
 173                         /* if(levl[omx][omy].scrsym == obj->olet)
 174                                 newsym(omx,omy); */
 175                         mpickobj(mtmp,obj);
 176                     }
 177                 }
 178         }
 179
 180         /* first we look for food */
 181         gtyp = UNDEF;   /* no goal as yet */
 182 #ifdef LINT
 183         gx = gy = 0;    /* suppress 'used before set' message */
 184 #endif LINT
 185         for(obj = fobj; obj; obj = obj->nobj) {
 186                 otyp = dogfood(obj);
 187                 if(otyp > gtyp || otyp == UNDEF) continue;
 188                 if(inroom(obj->ox,obj->oy) != dogroom) continue;
 189                 if(otyp < MANFOOD &&
 190                  (dogroom >= 0 || DDIST(obj->ox,obj->oy) < 10)) {
 191                         if(otyp < gtyp || (otyp == gtyp &&
 192                                 DDIST(obj->ox,obj->oy) < DDIST(gx,gy))){
 193                                 gx = obj->ox;
 194                                 gy = obj->oy;
 195                                 gtyp = otyp;
 196                         }
 197                 } else
 198                 if(gtyp == UNDEF && dogroom >= 0 &&
 199                    uroom == dogroom &&
 200                    !mtmp->minvent && edog->apport > rn2(8)){
 201                         gx = obj->ox;
 202                         gy = obj->oy;
 203                         gtyp = APPORT;
 204                 }
 205         }
 206         if(gtyp == UNDEF ||
 207           (gtyp != DOGFOOD && gtyp != APPORT && moves < edog->hungrytime)){
 208                 if(dogroom < 0 || dogroom == uroom){
 209                         gx = u.ux;
 210                         gy = u.uy;
 211 #ifndef QUEST
 212                 } else {
 213                         int tmp = rooms[dogroom].fdoor;
 214                             cnt = rooms[dogroom].doorct;
 215
 216                         gx = gy = FAR;  /* random, far away */
 217                         while(cnt--){
 218                             if(dist(gx,gy) >
 219                                 dist(doors[tmp].x, doors[tmp].y)){
 220                                         gx = doors[tmp].x;
 221                                         gy = doors[tmp].y;
 222                                 }
 223                                 tmp++;
 224                         }
 225                         /* here gx == FAR e.g. when dog is in a vault */
 226                         if(gx == FAR || (gx == omx && gy == omy)){
 227                                 gx = u.ux;
 228                                 gy = u.uy;
 229                         }
 230 #endif QUEST
 231                 }
 232                 appr = (udist >= 9) ? 1 : (mtmp->mflee) ? -1 : 0;
 233                 if(after && udist <= 4 && gx == u.ux && gy == u.uy)
 234                         return(0);
 235                 if(udist > 1){
 236                         if(!IS_ROOM(levl[u.ux][u.uy].typ) || !rn2(4) ||
 237                            whappr ||
 238                            (mtmp->minvent && rn2((int) edog->apport)))
 239                                 appr = 1;
 240                 }
 241                 /* if you have dog food he'll follow you more closely */
 242                 if(appr == 0){
 243                         obj = invent;
 244                         while(obj){
 245                                 if(obj->otyp == TRIPE_RATION){
 246                                         appr = 1;
 247                                         break;
 248                                 }
 249                                 obj = obj->nobj;
 250                         }
 251                 }
 252         } else  appr = 1;       /* gtyp != UNDEF */
 253         if(mtmp->mconf) appr = 0;
 254
 255         if(gx == u.ux && gy == u.uy && (dogroom != uroom || dogroom < 0)){
 256         extern coord *gettrack();
 257         register coord *cp;
 258                 cp = gettrack(omx,omy);
 259                 if(cp){
 260                         gx = cp->x;
 261                         gy = cp->y;
 262                 }
 263         }
 264
 265         nix = omx;
 266         niy = omy;
 267         cnt = mfndpos(mtmp,poss,info,ALLOW_M | ALLOW_TRAPS);
 268         chcnt = 0;
 269         chi = -1;
 270         for(i=0; i<cnt; i++){
 271                 nx = poss[i].x;
 272                 ny = poss[i].y;
 273                 if(info[i] & ALLOW_M){
 274                         mtmp2 = m_at(nx,ny);
 275                         if(mtmp2->data->mlevel >= mdat->mlevel+2 ||
 276                           mtmp2->data->mlet == 'c')
 277                                 continue;
 278                         if(after) return(0); /* hit only once each move */
 279
 280                         if(hitmm(mtmp, mtmp2) == 1 && rn2(4) &&
 281                           mtmp2->mlstmv != moves &&
 282                           hitmm(mtmp2,mtmp) == 2) return(2);
 283                         return(0);
 284                 }
 285
 286                 /* dog avoids traps */
 287                 /* but perhaps we have to pass a trap in order to follow @ */
 288                 if((info[i] & ALLOW_TRAPS) && (trap = t_at(nx,ny))){
 289                         if(!trap->tseen && rn2(40)) continue;
 290                         if(rn2(10)) continue;
 291                 }
 292
 293                 /* dog eschewes cursed objects */
 294                 /* but likes dog food */
 295                 obj = fobj;
 296                 while(obj){
 297                     if(obj->ox != nx || obj->oy != ny)
 298                         goto nextobj;
 299                     if(obj->cursed) goto nxti;
 300                     if(obj->olet == FOOD_SYM &&
 301                         (otyp = dogfood(obj)) < MANFOOD &&
 302                         (otyp < ACCFOOD || edog->hungrytime <= moves)){
 303                         /* Note: our dog likes the food so much that he
 304                         might eat it even when it conceals a cursed object */
 305                         nix = nx;
 306                         niy = ny;
 307                         chi = i;
 308                      eatobj:
 309                         edog->eattime =
 310                             moves + obj->quan * objects[obj->otyp].oc_delay;
 311                         if(edog->hungrytime < moves)
 312                             edog->hungrytime = moves;
 313                         edog->hungrytime +=
 314                             5*obj->quan * objects[obj->otyp].nutrition;
 315                         mtmp->mconf = 0;
 316                         if(cansee(nix,niy))
 317                             pline("%s ate %s.", Monnam(mtmp), doname(obj));
 318                         /* perhaps this was a reward */
 319                         if(otyp != CADAVER)
 320                         edog->apport += 200/(edog->dropdist+moves-edog->droptime);
 321                         delobj(obj);
 322                         goto newdogpos;
 323                     }
 324                 nextobj:
 325                     obj = obj->nobj;
 326                 }
 327
 328                 for(j=0; j<MTSZ && j<cnt-1; j++)
 329                         if(nx == mtmp->mtrack[j].x && ny == mtmp->mtrack[j].y)
 330                                 if(rn2(4*(cnt-j))) goto nxti;
 331
 332 /* Some stupid C compilers cannot compute the whole expression at once. */
 333                 nearer = GDIST(nx,ny);
 334                 nearer -= GDIST(nix,niy);
 335                 nearer *= appr;
 336                 if((nearer == 0 && !rn2(++chcnt)) || nearer<0 ||
 337                         (nearer > 0 && !whappr &&
 338                                 ((omx == nix && omy == niy && !rn2(3))
 339                                 || !rn2(12))
 340                         )){
 341                         nix = nx;
 342                         niy = ny;
 343                         if(nearer < 0) chcnt = 0;
 344                         chi = i;
 345                 }
 346         nxti:   ;
 347         }
 348 newdogpos:
 349         if(nix != omx || niy != omy){
 350                 if(info[chi] & ALLOW_U){
 351                         (void) hitu(mtmp, d(mdat->damn, mdat->damd)+1);
 352                         return(0);
 353                 }
 354                 mtmp->mx = nix;
 355                 mtmp->my = niy;
 356                 for(j=MTSZ-1; j>0; j--) mtmp->mtrack[j] = mtmp->mtrack[j-1];
 357                 mtmp->mtrack[0].x = omx;
 358                 mtmp->mtrack[0].y = omy;
 359         }
 360         if(mintrap(mtmp) == 2)  /* he died */
 361                 return(2);
 362         pmon(mtmp);
 363         return(1);
 364 }
 365
 366 /* return roomnumber or -1 */
 367 inroom(x,y) xchar x,y; {
 368 #ifndef QUEST
 369         register struct mkroom *croom = &rooms[0];
 370         while(croom->hx >= 0){
 371                 if(croom->hx >= x-1 && croom->lx <= x+1 &&
 372                    croom->hy >= y-1 && croom->ly <= y+1)
 373                         return(croom - rooms);
 374                 croom++;
 375         }
 376 #endif QUEST
 377         return(-1);     /* not in room or on door */
 378 }
 379
 380 tamedog(mtmp, obj)
 381 register struct monst *mtmp;
 382 register struct obj *obj;
 383 {
 384         register struct monst *mtmp2;
 385
 386         if(flags.moonphase == FULL_MOON && night() && rn2(6))
 387                 return(0);
 388
 389         /* If we cannot tame him, at least he's no longer afraid. */
 390         mtmp->mflee = 0;
 391         mtmp->mfleetim = 0;
 392         if(mtmp->mtame || mtmp->mfroz ||
 393 #ifndef NOWORM
 394                 mtmp->wormno ||
 395 #endif NOWORM
 396                 mtmp->isshk || mtmp->isgd || index(" &@12", mtmp->data->mlet))
 397                 return(0); /* no tame long worms? */
 398         if(obj) {
 399                 if(dogfood(obj) >= MANFOOD) return(0);
 400                 if(cansee(mtmp->mx,mtmp->my)){
 401                         pline("%s devours the %s.", Monnam(mtmp),
 402                                 objects[obj->otyp].oc_name);
 403                 }
 404                 obfree(obj, (struct obj *) 0);
 405         }
 406         mtmp2 = newmonst(sizeof(struct edog) + mtmp->mnamelth);
 407         *mtmp2 = *mtmp;
 408         mtmp2->mxlth = sizeof(struct edog);
 409         if(mtmp->mnamelth) (void) strcpy(NAME(mtmp2), NAME(mtmp));
 410         initedog(mtmp2);
 411         replmon(mtmp,mtmp2);
 412         return(1);
 413 }