1 /* $OpenBSD: hack.dog.c,v 1.4 2001/08/06 22:59:13 pjanzen Exp $ */ 2 3 /* 4 * Copyright (c) Stichting Mathematisch Centrum, Amsterdam, 1985. 5 */ 6 7 #ifndef lint 8 static char rcsid[] = "$OpenBSD: hack.dog.c,v 1.4 2001/08/06 22:59:13 pjanzen Exp $"; 9 #endif /* not lint */ 10 11 #include "hack.h" 12 #include "hack.mfndpos.h" 13 extern struct monst *makemon(); 14 #include "def.edog.h" 15 #include "def.mkroom.h" 16 17 struct permonst li_dog = 18 { "little dog", 'd',2,18,6,1,6,sizeof(struct edog) }; 19 struct permonst dog = 20 { "dog", 'd',4,16,5,1,6,sizeof(struct edog) }; 21 struct permonst la_dog = 22 { "large dog", 'd',6,15,4,2,4,sizeof(struct edog) }; 23 24 25 makedog(){ 26 register struct monst *mtmp = makemon(&li_dog,u.ux,u.uy); 27 if(!mtmp) return; /* dogs were genocided */ 28 initedog(mtmp); 29 } 30 31 initedog(mtmp) register struct monst *mtmp; { 32 mtmp->mtame = mtmp->mpeaceful = 1; 33 EDOG(mtmp)->hungrytime = 1000 + moves; 34 EDOG(mtmp)->eattime = 0; 35 EDOG(mtmp)->droptime = 0; 36 EDOG(mtmp)->dropdist = 10000; 37 EDOG(mtmp)->apport = 10; 38 EDOG(mtmp)->whistletime = 0; 39 } 40 41 /* attach the monsters that went down (or up) together with @ */ 42 struct monst *mydogs = 0; 43 struct monst *fallen_down = 0; /* monsters that fell through a trapdoor */ 44 /* they will appear on the next level @ goes to, even if he goes up! */ 45 46 losedogs(){ 47 register struct monst *mtmp; 48 while(mtmp = mydogs){ 49 mydogs = mtmp->nmon; 50 mtmp->nmon = fmon; 51 fmon = mtmp; 52 mnexto(mtmp); 53 } 54 while(mtmp = fallen_down){ 55 fallen_down = mtmp->nmon; 56 mtmp->nmon = fmon; 57 fmon = mtmp; 58 rloc(mtmp); 59 } 60 } 61 62 keepdogs(){ 63 register struct monst *mtmp; 64 for(mtmp = fmon; mtmp; mtmp = mtmp->nmon) 65 if(dist(mtmp->mx,mtmp->my) < 3 && follower(mtmp) 66 && !mtmp->msleep && !mtmp->mfroz) { 67 relmon(mtmp); 68 mtmp->nmon = mydogs; 69 mydogs = mtmp; 70 unpmon(mtmp); 71 keepdogs(); /* we destroyed the link, so use recursion */ 72 return; /* (admittedly somewhat primitive) */ 73 } 74 } 75 76 fall_down(mtmp) register struct monst *mtmp; { 77 relmon(mtmp); 78 mtmp->nmon = fallen_down; 79 fallen_down = mtmp; 80 unpmon(mtmp); 81 mtmp->mtame = 0; 82 } 83 84 /* return quality of food; the lower the better */ 85 #define DOGFOOD 0 86 #define CADAVER 1 87 #define ACCFOOD 2 88 #define MANFOOD 3 89 #define APPORT 4 90 #define POISON 5 91 #define UNDEF 6 92 dogfood(obj) register struct obj *obj; { 93 switch(obj->olet) { 94 case FOOD_SYM: 95 return( 96 (obj->otyp == TRIPE_RATION) ? DOGFOOD : 97 (obj->otyp < CARROT) ? ACCFOOD : 98 (obj->otyp < CORPSE) ? MANFOOD : 99 (poisonous(obj) || obj->age + 50 <= moves || 100 obj->otyp == DEAD_COCKATRICE) 101 ? POISON : CADAVER 102 ); 103 default: 104 if(!obj->cursed) return(APPORT); 105 /* fall into next case */ 106 case BALL_SYM: 107 case CHAIN_SYM: 108 case ROCK_SYM: 109 return(UNDEF); 110 } 111 } 112 113 /* return 0 (no move), 1 (move) or 2 (dead) */ 114 dog_move(mtmp, after) register struct monst *mtmp; { 115 register int nx,ny,omx,omy,appr,nearer,j; 116 int udist,chi,i,whappr; 117 register struct monst *mtmp2; 118 register struct permonst *mdat = mtmp->data; 119 register struct edog *edog = EDOG(mtmp); 120 struct obj *obj; 121 struct trap *trap; 122 xchar cnt,chcnt,nix,niy; 123 schar dogroom,uroom; 124 xchar gx,gy,gtyp,otyp; /* current goal */ 125 coord poss[9]; 126 int info[9]; 127 #define GDIST(x,y) ((x-gx)*(x-gx) + (y-gy)*(y-gy)) 128 #define DDIST(x,y) ((x-omx)*(x-omx) + (y-omy)*(y-omy)) 129 130 if(moves <= edog->eattime) return(0); /* dog is still eating */ 131 omx = mtmp->mx; 132 omy = mtmp->my; 133 whappr = (moves - EDOG(mtmp)->whistletime < 5); 134 if(moves > edog->hungrytime + 500 && !mtmp->mconf){ 135 mtmp->mconf = 1; 136 mtmp->mhpmax /= 3; 137 if(mtmp->mhp > mtmp->mhpmax) 138 mtmp->mhp = mtmp->mhpmax; 139 if(cansee(omx,omy)) 140 pline("%s is confused from hunger.", Monnam(mtmp)); 141 else pline("You feel worried about %s.", monnam(mtmp)); 142 } else 143 if(moves > edog->hungrytime + 750 || mtmp->mhp < 1){ 144 if(cansee(omx,omy)) 145 pline("%s dies from hunger.", Monnam(mtmp)); 146 else 147 pline("You have a sad feeling for a moment, then it passes."); 148 mondied(mtmp); 149 return(2); 150 } 151 dogroom = inroom(omx,omy); 152 uroom = inroom(u.ux,u.uy); 153 udist = dist(omx,omy); 154 155 /* maybe we tamed him while being swallowed --jgm */ 156 if(!udist) return(0); 157 158 /* if we are carrying sth then we drop it (perhaps near @) */ 159 /* Note: if apport == 1 then our behaviour is independent of udist */ 160 if(mtmp->minvent){ 161 if(!rn2(udist) || !rn2((int) edog->apport)) 162 if(rn2(10) < edog->apport){ 163 relobj(mtmp, (int) mtmp->minvis); 164 if(edog->apport > 1) edog->apport--; 165 edog->dropdist = udist; /* hpscdi!jon */ 166 edog->droptime = moves; 167 } 168 } else { 169 if(obj = o_at(omx,omy)) if(!strchr("0_", obj->olet)){ 170 if((otyp = dogfood(obj)) <= CADAVER){ 171 nix = omx; 172 niy = omy; 173 goto eatobj; 174 } 175 if(obj->owt < 10*mtmp->data->mlevel) 176 if(rn2(20) < edog->apport+3) 177 if(rn2(udist) || !rn2((int) edog->apport)){ 178 freeobj(obj); 179 unpobj(obj); 180 /* if(levl[omx][omy].scrsym == obj->olet) 181 newsym(omx,omy); */ 182 mpickobj(mtmp,obj); 183 } 184 } 185 } 186 187 /* first we look for food */ 188 gtyp = UNDEF; /* no goal as yet */ 189 #ifdef LINT 190 gx = gy = 0; /* suppress 'used before set' message */ 191 #endif /* LINT */ 192 for(obj = fobj; obj; obj = obj->nobj) { 193 otyp = dogfood(obj); 194 if(otyp > gtyp || otyp == UNDEF) continue; 195 if(inroom(obj->ox,obj->oy) != dogroom) continue; 196 if(otyp < MANFOOD && 197 (dogroom >= 0 || DDIST(obj->ox,obj->oy) < 10)) { 198 if(otyp < gtyp || (otyp == gtyp && 199 DDIST(obj->ox,obj->oy) < DDIST(gx,gy))){ 200 gx = obj->ox; 201 gy = obj->oy; 202 gtyp = otyp; 203 } 204 } else 205 if(gtyp == UNDEF && dogroom >= 0 && 206 uroom == dogroom && 207 !mtmp->minvent && edog->apport > rn2(8)){ 208 gx = obj->ox; 209 gy = obj->oy; 210 gtyp = APPORT; 211 } 212 } 213 if(gtyp == UNDEF || 214 (gtyp != DOGFOOD && gtyp != APPORT && moves < edog->hungrytime)){ 215 if(dogroom < 0 || dogroom == uroom){ 216 gx = u.ux; 217 gy = u.uy; 218 #ifndef QUEST 219 } else { 220 int tmp = rooms[dogroom].fdoor; 221 cnt = rooms[dogroom].doorct; 222 223 gx = gy = FAR; /* random, far away */ 224 while(cnt--){ 225 if(dist(gx,gy) > 226 dist(doors[tmp].x, doors[tmp].y)){ 227 gx = doors[tmp].x; 228 gy = doors[tmp].y; 229 } 230 tmp++; 231 } 232 /* here gx == FAR e.g. when dog is in a vault */ 233 if(gx == FAR || (gx == omx && gy == omy)){ 234 gx = u.ux; 235 gy = u.uy; 236 } 237 #endif /* QUEST */ 238 } 239 appr = (udist >= 9) ? 1 : (mtmp->mflee) ? -1 : 0; 240 if(after && udist <= 4 && gx == u.ux && gy == u.uy) 241 return(0); 242 if(udist > 1){ 243 if(!IS_ROOM(levl[u.ux][u.uy].typ) || !rn2(4) || 244 whappr || 245 (mtmp->minvent && rn2((int) edog->apport))) 246 appr = 1; 247 } 248 /* if you have dog food he'll follow you more closely */ 249 if(appr == 0){ 250 obj = invent; 251 while(obj){ 252 if(obj->otyp == TRIPE_RATION){ 253 appr = 1; 254 break; 255 } 256 obj = obj->nobj; 257 } 258 } 259 } else appr = 1; /* gtyp != UNDEF */ 260 if(mtmp->mconf) appr = 0; 261 262 if(gx == u.ux && gy == u.uy && (dogroom != uroom || dogroom < 0)){ 263 extern coord *gettrack(); 264 register coord *cp; 265 cp = gettrack(omx,omy); 266 if(cp){ 267 gx = cp->x; 268 gy = cp->y; 269 } 270 } 271 272 nix = omx; 273 niy = omy; 274 cnt = mfndpos(mtmp,poss,info,ALLOW_M | ALLOW_TRAPS); 275 chcnt = 0; 276 chi = -1; 277 for(i=0; i<cnt; i++){ 278 nx = poss[i].x; 279 ny = poss[i].y; 280 if(info[i] & ALLOW_M){ 281 mtmp2 = m_at(nx,ny); 282 if(mtmp2->data->mlevel >= mdat->mlevel+2 || 283 mtmp2->data->mlet == 'c') 284 continue; 285 if(after) return(0); /* hit only once each move */ 286 287 if(hitmm(mtmp, mtmp2) == 1 && rn2(4) && 288 mtmp2->mlstmv != moves && 289 hitmm(mtmp2,mtmp) == 2) return(2); 290 return(0); 291 } 292 293 /* dog avoids traps */ 294 /* but perhaps we have to pass a trap in order to follow @ */ 295 if((info[i] & ALLOW_TRAPS) && (trap = t_at(nx,ny))){ 296 if(!trap->tseen && rn2(40)) continue; 297 if(rn2(10)) continue; 298 } 299 300 /* dog eschewes cursed objects */ 301 /* but likes dog food */ 302 obj = fobj; 303 while(obj){ 304 if(obj->ox != nx || obj->oy != ny) 305 goto nextobj; 306 if(obj->cursed) goto nxti; 307 if(obj->olet == FOOD_SYM && 308 (otyp = dogfood(obj)) < MANFOOD && 309 (otyp < ACCFOOD || edog->hungrytime <= moves)){ 310 /* Note: our dog likes the food so much that he 311 might eat it even when it conceals a cursed object */ 312 nix = nx; 313 niy = ny; 314 chi = i; 315 eatobj: 316 edog->eattime = 317 moves + obj->quan * objects[obj->otyp].oc_delay; 318 if(edog->hungrytime < moves) 319 edog->hungrytime = moves; 320 edog->hungrytime += 321 5*obj->quan * objects[obj->otyp].nutrition; 322 mtmp->mconf = 0; 323 if(cansee(nix,niy)) 324 pline("%s ate %s.", Monnam(mtmp), doname(obj)); 325 /* perhaps this was a reward */ 326 if(otyp != CADAVER) 327 edog->apport += 200/(edog->dropdist+moves-edog->droptime); 328 delobj(obj); 329 goto newdogpos; 330 } 331 nextobj: 332 obj = obj->nobj; 333 } 334 335 for(j=0; j<MTSZ && j<cnt-1; j++) 336 if(nx == mtmp->mtrack[j].x && ny == mtmp->mtrack[j].y) 337 if(rn2(4*(cnt-j))) goto nxti; 338 339 /* Some stupid C compilers cannot compute the whole expression at once. */ 340 nearer = GDIST(nx,ny); 341 nearer -= GDIST(nix,niy); 342 nearer *= appr; 343 if((nearer == 0 && !rn2(++chcnt)) || nearer<0 || 344 (nearer > 0 && !whappr && 345 ((omx == nix && omy == niy && !rn2(3)) 346 || !rn2(12)) 347 )){ 348 nix = nx; 349 niy = ny; 350 if(nearer < 0) chcnt = 0; 351 chi = i; 352 } 353 nxti: ; 354 } 355 newdogpos: 356 if(nix != omx || niy != omy){ 357 if(info[chi] & ALLOW_U){ 358 (void) hitu(mtmp, d(mdat->damn, mdat->damd)+1); 359 return(0); 360 } 361 mtmp->mx = nix; 362 mtmp->my = niy; 363 for(j=MTSZ-1; j>0; j--) mtmp->mtrack[j] = mtmp->mtrack[j-1]; 364 mtmp->mtrack[0].x = omx; 365 mtmp->mtrack[0].y = omy; 366 } 367 if(mintrap(mtmp) == 2) /* he died */ 368 return(2); 369 pmon(mtmp); 370 return(1); 371 } 372 373 /* return roomnumber or -1 */ 374 inroom(x,y) xchar x,y; { 375 #ifndef QUEST 376 register struct mkroom *croom = &rooms[0]; 377 while(croom->hx >= 0){ 378 if(croom->hx >= x-1 && croom->lx <= x+1 && 379 croom->hy >= y-1 && croom->ly <= y+1) 380 return(croom - rooms); 381 croom++; 382 } 383 #endif /* QUEST */ 384 return(-1); /* not in room or on door */ 385 } 386 387 tamedog(mtmp, obj) 388 register struct monst *mtmp; 389 register struct obj *obj; 390 { 391 register struct monst *mtmp2; 392 393 if(flags.moonphase == FULL_MOON && night() && rn2(6)) 394 return(0); 395 396 /* If we cannot tame him, at least he's no longer afraid. */ 397 mtmp->mflee = 0; 398 mtmp->mfleetim = 0; 399 if(mtmp->mtame || mtmp->mfroz || 400 #ifndef NOWORM 401 mtmp->wormno || 402 #endif /* NOWORM */ 403 mtmp->isshk || mtmp->isgd || strchr(" &@12", mtmp->data->mlet)) 404 return(0); /* no tame long worms? */ 405 if(obj) { 406 if(dogfood(obj) >= MANFOOD) return(0); 407 if(cansee(mtmp->mx,mtmp->my)){ 408 pline("%s devours the %s.", Monnam(mtmp), 409 objects[obj->otyp].oc_name); 410 } 411 obfree(obj, (struct obj *) 0); 412 } 413 mtmp2 = newmonst(sizeof(struct edog) + mtmp->mnamelth); 414 *mtmp2 = *mtmp; 415 mtmp2->mxlth = sizeof(struct edog); 416 if(mtmp->mnamelth) (void) strcpy(NAME(mtmp2), NAME(mtmp)); 417 initedog(mtmp2); 418 replmon(mtmp,mtmp2); 419 return(1); 420 } 421