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 } 414