dog.c (10804B)
1 /* Copyright (c) Stichting Mathematisch Centrum, Amsterdam, 1985. */ 2 /* dog.c - version 1.0.3 */ 3 4 #include "hack.h" 5 #include "mfndpos.h" 6 extern struct monst *makemon(); 7 #include "edog.h" 8 #include "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 #ifdef DGK 61 /* Bug "fix" for worm changing levels collapsing dungeon 62 */ 63 if (mtmp->data->mlet == 'w') { 64 if (canseemon(mtmp) || (Blind && Telepat)) 65 pline("The worm can't fit in stairwell!"); 66 continue; 67 } 68 #endif 69 relmon(mtmp); 70 mtmp->nmon = mydogs; 71 mydogs = mtmp; 72 unpmon(mtmp); 73 keepdogs(); /* we destroyed the link, so use recursion */ 74 return; /* (admittedly somewhat primitive) */ 75 } 76 } 77 78 fall_down(mtmp) register struct monst *mtmp; { 79 relmon(mtmp); 80 mtmp->nmon = fallen_down; 81 fallen_down = mtmp; 82 unpmon(mtmp); 83 mtmp->mtame = 0; 84 } 85 86 /* return quality of food; the lower the better */ 87 #define DOGFOOD 0 88 #define CADAVER 1 89 #define ACCFOOD 2 90 #define MANFOOD 3 91 #define APPORT 4 92 #define POISON 5 93 #define UNDEF 6 94 dogfood(obj) register struct obj *obj; { 95 switch(obj->olet) { 96 case FOOD_SYM: 97 return( 98 (obj->otyp == TRIPE_RATION) ? DOGFOOD : 99 (obj->otyp < CARROT) ? ACCFOOD : 100 (obj->otyp < CORPSE) ? MANFOOD : 101 (poisonous(obj) || obj->age + 50 <= moves || 102 obj->otyp == DEAD_COCKATRICE) 103 ? POISON : CADAVER 104 ); 105 default: 106 if(!obj->cursed) return(APPORT); 107 /* fall into next case */ 108 case BALL_SYM: 109 case CHAIN_SYM: 110 case ROCK_SYM: 111 return(UNDEF); 112 } 113 } 114 115 /* return 0 (no move), 1 (move) or 2 (dead) */ 116 dog_move(mtmp, after) register struct monst *mtmp; { 117 #ifdef REGBUG 118 int nx,ny,omx,omy,appr,nearer,j; 119 #else 120 register int nx,ny,omx,omy,appr,nearer,j; 121 #endif /* REGBUG */ 122 int udist,chi,i,whappr; 123 register struct monst *mtmp2; 124 register struct permonst *mdat = mtmp->data; 125 register struct edog *edog = EDOG(mtmp); 126 struct obj *obj; 127 struct trap *trap; 128 xchar cnt,chcnt,nix,niy; 129 schar dogroom,uroom; 130 xchar gx,gy,gtyp,otyp; /* current goal */ 131 coord poss[9]; 132 int info[9]; 133 #define GDIST(x,y) ((x-gx)*(x-gx) + (y-gy)*(y-gy)) 134 #define DDIST(x,y) ((x-omx)*(x-omx) + (y-omy)*(y-omy)) 135 136 if(moves <= edog->eattime) return(0); /* dog is still eating */ 137 omx = mtmp->mx; 138 omy = mtmp->my; 139 whappr = (moves - EDOG(mtmp)->whistletime < 5); 140 if(moves > edog->hungrytime + 500 && !mtmp->mconf){ 141 mtmp->mconf = 1; 142 mtmp->mhpmax /= 3; 143 if(mtmp->mhp > mtmp->mhpmax) 144 mtmp->mhp = mtmp->mhpmax; 145 if(cansee(omx,omy)) 146 pline("%s is confused from hunger.", Monnam(mtmp)); 147 else pline("You feel worried about %s.", monnam(mtmp)); 148 } else 149 if(moves > edog->hungrytime + 750 || mtmp->mhp < 1){ 150 if(cansee(omx,omy)) 151 pline("%s dies from hunger.", Monnam(mtmp)); 152 else 153 pline("You have a sad feeling for a moment, then it passes."); 154 mondied(mtmp); 155 return(2); 156 } 157 dogroom = inroom(omx,omy); 158 uroom = inroom(u.ux,u.uy); 159 udist = dist(omx,omy); 160 161 /* maybe we tamed him while being swallowed --jgm */ 162 if(!udist) return(0); 163 164 /* if we are carrying sth then we drop it (perhaps near @) */ 165 /* Note: if apport == 1 then our behaviour is independent of udist */ 166 if(mtmp->minvent){ 167 if(!rn2(udist) || !rn2((int) edog->apport)) 168 if(rn2(10) < edog->apport){ 169 relobj(mtmp, (int) mtmp->minvis); 170 if(edog->apport > 1) edog->apport--; 171 edog->dropdist = udist; /* hpscdi!jon */ 172 edog->droptime = moves; 173 } 174 } else { 175 if(obj = o_at(omx,omy)) if(!index("0_", obj->olet)){ 176 if((otyp = dogfood(obj)) <= CADAVER){ 177 nix = omx; 178 niy = omy; 179 goto eatobj; 180 } 181 if(obj->owt < 10*mtmp->data->mlevel) 182 if(rn2(20) < edog->apport+3) 183 if(rn2(udist) || !rn2((int) edog->apport)){ 184 freeobj(obj); 185 unpobj(obj); 186 /* if(levl[omx][omy].scrsym == obj->olet) 187 newsym(omx,omy); */ 188 mpickobj(mtmp,obj); 189 } 190 } 191 } 192 193 /* first we look for food */ 194 gtyp = UNDEF; /* no goal as yet */ 195 #ifdef LINT 196 gx = gy = 0; /* suppress 'used before set' message */ 197 #endif /* LINT /**/ 198 for(obj = fobj; obj; obj = obj->nobj) { 199 otyp = dogfood(obj); 200 if(otyp > gtyp || otyp == UNDEF) continue; 201 if(inroom(obj->ox,obj->oy) != dogroom) continue; 202 if(otyp < MANFOOD && 203 (dogroom >= 0 || DDIST(obj->ox,obj->oy) < 10)) { 204 if(otyp < gtyp || (otyp == gtyp && 205 DDIST(obj->ox,obj->oy) < DDIST(gx,gy))){ 206 gx = obj->ox; 207 gy = obj->oy; 208 gtyp = otyp; 209 } 210 } else 211 if(gtyp == UNDEF && dogroom >= 0 && 212 uroom == dogroom && 213 !mtmp->minvent && edog->apport > rn2(8)){ 214 gx = obj->ox; 215 gy = obj->oy; 216 gtyp = APPORT; 217 } 218 } 219 if(gtyp == UNDEF || 220 (gtyp != DOGFOOD && gtyp != APPORT && moves < edog->hungrytime)){ 221 if(dogroom < 0 || dogroom == uroom){ 222 gx = u.ux; 223 gy = u.uy; 224 #ifndef QUEST 225 } else { 226 int tmp = rooms[dogroom].fdoor; 227 cnt = rooms[dogroom].doorct; 228 229 gx = gy = FAR; /* random, far away */ 230 while(cnt--){ 231 if(dist(gx,gy) > 232 dist(doors[tmp].x, doors[tmp].y)){ 233 gx = doors[tmp].x; 234 gy = doors[tmp].y; 235 } 236 tmp++; 237 } 238 /* here gx == FAR e.g. when dog is in a vault */ 239 if(gx == FAR || (gx == omx && gy == omy)){ 240 gx = u.ux; 241 gy = u.uy; 242 } 243 #endif /* QUEST /**/ 244 } 245 appr = (udist >= 9) ? 1 : (mtmp->mflee) ? -1 : 0; 246 if(after && udist <= 4 && gx == u.ux && gy == u.uy) 247 return(0); 248 if(udist > 1){ 249 if(!IS_ROOM(levl[u.ux][u.uy].typ) || !rn2(4) || 250 whappr || 251 (mtmp->minvent && rn2((int) edog->apport))) 252 appr = 1; 253 } 254 /* if you have dog food he'll follow you more closely */ 255 if(appr == 0){ 256 obj = invent; 257 while(obj){ 258 if(obj->otyp == TRIPE_RATION){ 259 appr = 1; 260 break; 261 } 262 obj = obj->nobj; 263 } 264 } 265 } else appr = 1; /* gtyp != UNDEF */ 266 if(mtmp->mconf) appr = 0; 267 268 if(gx == u.ux && gy == u.uy && (dogroom != uroom || dogroom < 0)){ 269 extern coord *gettrack(); 270 register coord *cp; 271 cp = gettrack(omx,omy); 272 if(cp){ 273 gx = cp->x; 274 gy = cp->y; 275 } 276 } 277 278 nix = omx; 279 niy = omy; 280 cnt = mfndpos(mtmp,poss,info,ALLOW_M | ALLOW_TRAPS); 281 chcnt = 0; 282 chi = -1; 283 for(i=0; i<cnt; i++){ 284 nx = poss[i].x; 285 ny = poss[i].y; 286 if(info[i] & ALLOW_M){ 287 mtmp2 = m_at(nx,ny); 288 if(mtmp2->data->mlevel >= mdat->mlevel+2 || 289 mtmp2->data->mlet == 'c') 290 continue; 291 if(after) return(0); /* hit only once each move */ 292 293 if(hitmm(mtmp, mtmp2) == 1 && rn2(4) && 294 mtmp2->mlstmv != moves && 295 hitmm(mtmp2,mtmp) == 2) return(2); 296 return(0); 297 } 298 299 /* dog avoids traps */ 300 /* but perhaps we have to pass a trap in order to follow @ */ 301 if((info[i] & ALLOW_TRAPS) && (trap = t_at(nx,ny))){ 302 if(!trap->tseen && rn2(40)) continue; 303 if(rn2(10)) continue; 304 } 305 306 /* dog eschewes cursed objects */ 307 /* but likes dog food */ 308 obj = fobj; 309 while(obj){ 310 if(obj->ox != nx || obj->oy != ny) 311 goto nextobj; 312 if(obj->cursed) goto nxti; 313 if(obj->olet == FOOD_SYM && 314 (otyp = dogfood(obj)) < MANFOOD && 315 (otyp < ACCFOOD || edog->hungrytime <= moves)){ 316 /* Note: our dog likes the food so much that he 317 might eat it even when it conceals a cursed object */ 318 nix = nx; 319 niy = ny; 320 chi = i; 321 eatobj: 322 edog->eattime = 323 moves + obj->quan * objects[obj->otyp].oc_delay; 324 if(edog->hungrytime < moves) 325 edog->hungrytime = moves; 326 edog->hungrytime += 327 5*obj->quan * objects[obj->otyp].nutrition; 328 mtmp->mconf = 0; 329 if(cansee(nix,niy)) 330 pline("%s ate %s.", Monnam(mtmp), doname(obj)); 331 /* perhaps this was a reward */ 332 if(otyp != CADAVER) 333 edog->apport += 200/(edog->dropdist+moves-edog->droptime); 334 delobj(obj); 335 goto newdogpos; 336 } 337 nextobj: 338 obj = obj->nobj; 339 } 340 341 for(j=0; j<MTSZ && j<cnt-1; j++) 342 if(nx == mtmp->mtrack[j].x && ny == mtmp->mtrack[j].y) 343 if(rn2(4*(cnt-j))) goto nxti; 344 345 /* Some stupid C compilers cannot compute the whole expression at once. */ 346 nearer = GDIST(nx,ny); 347 nearer -= GDIST(nix,niy); 348 nearer *= appr; 349 if((nearer == 0 && !rn2(++chcnt)) || nearer<0 || 350 (nearer > 0 && !whappr && 351 ((omx == nix && omy == niy && !rn2(3)) 352 || !rn2(12)) 353 )){ 354 nix = nx; 355 niy = ny; 356 if(nearer < 0) chcnt = 0; 357 chi = i; 358 } 359 nxti: ; 360 } 361 newdogpos: 362 if(nix != omx || niy != omy){ 363 if(info[chi] & ALLOW_U){ 364 (void) hitu(mtmp, d(mdat->damn, mdat->damd)+1); 365 return(0); 366 } 367 mtmp->mx = nix; 368 mtmp->my = niy; 369 for(j=MTSZ-1; j>0; j--) mtmp->mtrack[j] = mtmp->mtrack[j-1]; 370 mtmp->mtrack[0].x = omx; 371 mtmp->mtrack[0].y = omy; 372 } 373 if(mintrap(mtmp) == 2) /* he died */ 374 return(2); 375 pmon(mtmp); 376 return(1); 377 } 378 379 /* return roomnumber or -1 */ 380 inroom(x,y) xchar x,y; { 381 #ifndef QUEST 382 register struct mkroom *croom = &rooms[0]; 383 while(croom->hx >= 0){ 384 if(croom->hx >= x-1 && croom->lx <= x+1 && 385 croom->hy >= y-1 && croom->ly <= y+1) 386 return(croom - rooms); 387 croom++; 388 } 389 #endif /* QUEST /**/ 390 return(-1); /* not in room or on door */ 391 } 392 393 tamedog(mtmp, obj) 394 register struct monst *mtmp; 395 register struct obj *obj; 396 { 397 register struct monst *mtmp2; 398 399 if(flags.moonphase == FULL_MOON && night() && rn2(6)) 400 return(0); 401 402 /* If we cannot tame him, at least he's no longer afraid. */ 403 mtmp->mflee = 0; 404 mtmp->mfleetim = 0; 405 if(mtmp->mtame || mtmp->mfroz || 406 #ifndef NOWORM 407 mtmp->wormno || 408 #endif /* NOWORM /**/ 409 mtmp->isshk || mtmp->isgd || index(" &@12", mtmp->data->mlet)) 410 return(0); /* no tame long worms? */ 411 if(obj) { 412 if(dogfood(obj) >= MANFOOD) return(0); 413 if(cansee(mtmp->mx,mtmp->my)){ 414 pline("%s devours the %s.", Monnam(mtmp), 415 objects[obj->otyp].oc_name); 416 } 417 obfree(obj, (struct obj *) 0); 418 } 419 mtmp2 = newmonst(sizeof(struct edog) + mtmp->mnamelth); 420 *mtmp2 = *mtmp; 421 mtmp2->mxlth = sizeof(struct edog); 422 if(mtmp->mnamelth) (void) strcpy(NAME(mtmp2), NAME(mtmp)); 423 initedog(mtmp2); 424 replmon(mtmp,mtmp2); 425 return(1); 426 }