1 /* Copyright (c) Stichting Mathematisch Centrum, Amsterdam, 1985. */ 2 /* hack.dog.c - version 1.0.3 */ 3 /* $FreeBSD: src/games/hack/hack.dog.c,v 1.3 1999/11/16 02:57:03 billf Exp $ */ 4 /* $DragonFly: src/games/hack/hack.dog.c,v 1.4 2006/08/21 19:45:32 pavalos Exp $ */ 5 6 #include "hack.h" 7 #include "hack.mfndpos.h" 8 #include "def.edog.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 static void initedog(struct monst *); 18 static xchar dogfood(struct obj *); 19 20 void 21 makedog(void) 22 { 23 struct monst *mtmp = makemon(&li_dog,u.ux,u.uy); 24 if(!mtmp) return; /* dogs were genocided */ 25 initedog(mtmp); 26 } 27 28 static void 29 initedog(struct monst *mtmp) 30 { 31 mtmp->mtame = mtmp->mpeaceful = 1; 32 EDOG(mtmp)->hungrytime = 1000 + moves; 33 EDOG(mtmp)->eattime = 0; 34 EDOG(mtmp)->droptime = 0; 35 EDOG(mtmp)->dropdist = 10000; 36 EDOG(mtmp)->apport = 10; 37 EDOG(mtmp)->whistletime = 0; 38 } 39 40 /* attach the monsters that went down (or up) together with @ */ 41 struct monst *mydogs = 0; 42 struct monst *fallen_down = 0; /* monsters that fell through a trapdoor */ 43 /* they will appear on the next level @ goes to, even if he goes up! */ 44 45 void 46 losedogs(void) 47 { 48 struct monst *mtmp; 49 while((mtmp = mydogs)){ 50 mydogs = mtmp->nmon; 51 mtmp->nmon = fmon; 52 fmon = mtmp; 53 mnexto(mtmp); 54 } 55 while((mtmp = fallen_down)){ 56 fallen_down = mtmp->nmon; 57 mtmp->nmon = fmon; 58 fmon = mtmp; 59 rloc(mtmp); 60 } 61 } 62 63 void 64 keepdogs(void) 65 { 66 struct monst *mtmp; 67 for(mtmp = fmon; mtmp; mtmp = mtmp->nmon) 68 if(dist(mtmp->mx,mtmp->my) < 3 && follower(mtmp) 69 && !mtmp->msleep && !mtmp->mfroz) { 70 relmon(mtmp); 71 mtmp->nmon = mydogs; 72 mydogs = mtmp; 73 unpmon(mtmp); 74 keepdogs(); /* we destroyed the link, so use recursion */ 75 return; /* (admittedly somewhat primitive) */ 76 } 77 } 78 79 void 80 fall_down(struct monst *mtmp) 81 { 82 relmon(mtmp); 83 mtmp->nmon = fallen_down; 84 fallen_down = mtmp; 85 unpmon(mtmp); 86 mtmp->mtame = 0; 87 } 88 89 /* return quality of food; the lower the better */ 90 #define DOGFOOD 0 91 #define CADAVER 1 92 #define ACCFOOD 2 93 #define MANFOOD 3 94 #define APPORT 4 95 #define POISON 5 96 #define UNDEF 6 97 static xchar 98 dogfood(struct obj *obj) 99 { 100 switch(obj->olet) { 101 case FOOD_SYM: 102 return( 103 (obj->otyp == TRIPE_RATION) ? DOGFOOD : 104 (obj->otyp < CARROT) ? ACCFOOD : 105 (obj->otyp < CORPSE) ? MANFOOD : 106 (poisonous(obj) || obj->age + 50 <= moves || 107 obj->otyp == DEAD_COCKATRICE) 108 ? POISON : CADAVER 109 ); 110 default: 111 if(!obj->cursed) return(APPORT); 112 /* fall into next case */ 113 case BALL_SYM: 114 case CHAIN_SYM: 115 case ROCK_SYM: 116 return(UNDEF); 117 } 118 } 119 120 /* return 0 (no move), 1 (move) or 2 (dead) */ 121 int 122 dog_move(struct monst *mtmp, int after) 123 { 124 int nx,ny,omx,omy,appr,nearer,j; 125 int udist,chi = 0,i,whappr; 126 struct monst *mtmp2; 127 struct permonst *mdat = mtmp->data; 128 struct edog *edog = EDOG(mtmp); 129 struct obj *obj; 130 struct trap *trap; 131 xchar cnt,chcnt,nix,niy; 132 schar dogroom,uroom; 133 xchar gx,gy,gtyp,otyp; /* current goal */ 134 coord poss[9]; 135 int info[9]; 136 #define GDIST(x,y) ((x-gx)*(x-gx) + (y-gy)*(y-gy)) 137 #define DDIST(x,y) ((x-omx)*(x-omx) + (y-omy)*(y-omy)) 138 139 if(moves <= edog->eattime) return(0); /* dog is still eating */ 140 omx = mtmp->mx; 141 omy = mtmp->my; 142 whappr = (moves - EDOG(mtmp)->whistletime < 5); 143 if(moves > edog->hungrytime + 500 && !mtmp->mconf){ 144 mtmp->mconf = 1; 145 mtmp->mhpmax /= 3; 146 if(mtmp->mhp > mtmp->mhpmax) 147 mtmp->mhp = mtmp->mhpmax; 148 if(cansee(omx,omy)) 149 pline("%s is confused from hunger.", Monnam(mtmp)); 150 else pline("You feel worried about %s.", monnam(mtmp)); 151 } else 152 if(moves > edog->hungrytime + 750 || mtmp->mhp < 1){ 153 if(cansee(omx,omy)) 154 pline("%s dies from hunger.", Monnam(mtmp)); 155 else 156 pline("You have a sad feeling for a moment, then it passes."); 157 mondied(mtmp); 158 return(2); 159 } 160 dogroom = inroom(omx,omy); 161 uroom = inroom(u.ux,u.uy); 162 udist = dist(omx,omy); 163 164 /* maybe we tamed him while being swallowed --jgm */ 165 if(!udist) return(0); 166 167 /* if we are carrying sth then we drop it (perhaps near @) */ 168 /* Note: if apport == 1 then our behaviour is independent of udist */ 169 if(mtmp->minvent){ 170 if(!rn2(udist) || !rn2((int) edog->apport)) 171 if(rn2(10) < (int)edog->apport){ 172 relobj(mtmp, (int) mtmp->minvis); 173 if(edog->apport > 1) edog->apport--; 174 edog->dropdist = udist; /* hpscdi!jon */ 175 edog->droptime = moves; 176 } 177 } else { 178 if((obj = o_at(omx,omy))) if(!index("0_", obj->olet)){ 179 if((otyp = dogfood(obj)) <= CADAVER){ 180 nix = omx; 181 niy = omy; 182 goto eatobj; 183 } 184 if(obj->owt < 10*mtmp->data->mlevel) 185 if(rn2(20) < (int)edog->apport+3) 186 if(rn2(udist) || !rn2((int) edog->apport)){ 187 freeobj(obj); 188 unpobj(obj); 189 /* if(levl[omx][omy].scrsym == obj->olet) 190 newsym(omx,omy); */ 191 mpickobj(mtmp,obj); 192 } 193 } 194 } 195 196 /* first we look for food */ 197 gtyp = UNDEF; /* no goal as yet */ 198 gx = gy = 0; /* suppress 'used before set' message */ 199 for(obj = fobj; obj; obj = obj->nobj) { 200 otyp = dogfood(obj); 201 if(otyp > gtyp || otyp == UNDEF) continue; 202 if(inroom(obj->ox,obj->oy) != dogroom) continue; 203 if(otyp < MANFOOD && 204 (dogroom >= 0 || DDIST(obj->ox,obj->oy) < 10)) { 205 if(otyp < gtyp || (otyp == gtyp && 206 DDIST(obj->ox,obj->oy) < DDIST(gx,gy))){ 207 gx = obj->ox; 208 gy = obj->oy; 209 gtyp = otyp; 210 } 211 } else 212 if(gtyp == UNDEF && dogroom >= 0 && 213 uroom == dogroom && 214 !mtmp->minvent && (int)edog->apport > rn2(8)){ 215 gx = obj->ox; 216 gy = obj->oy; 217 gtyp = APPORT; 218 } 219 } 220 if(gtyp == UNDEF || 221 (gtyp != DOGFOOD && gtyp != APPORT && moves < edog->hungrytime)){ 222 if(dogroom < 0 || dogroom == uroom){ 223 gx = u.ux; 224 gy = u.uy; 225 #ifndef QUEST 226 } else { 227 int tmp = rooms[dogroom].fdoor; 228 cnt = rooms[dogroom].doorct; 229 230 gx = gy = FAR; /* random, far away */ 231 while(cnt--){ 232 if(dist(gx,gy) > 233 dist(doors[tmp].x, doors[tmp].y)){ 234 gx = doors[tmp].x; 235 gy = doors[tmp].y; 236 } 237 tmp++; 238 } 239 /* here gx == FAR e.g. when dog is in a vault */ 240 if(gx == FAR || (gx == omx && gy == omy)){ 241 gx = u.ux; 242 gy = u.uy; 243 } 244 #endif /* QUEST */ 245 } 246 appr = (udist >= 9) ? 1 : (mtmp->mflee) ? -1 : 0; 247 if(after && udist <= 4 && gx == u.ux && gy == u.uy) 248 return(0); 249 if(udist > 1){ 250 if(!IS_ROOM(levl[u.ux][u.uy].typ) || !rn2(4) || 251 whappr || 252 (mtmp->minvent && rn2((int) edog->apport))) 253 appr = 1; 254 } 255 /* if you have dog food he'll follow you more closely */ 256 if(appr == 0){ 257 obj = invent; 258 while(obj){ 259 if(obj->otyp == TRIPE_RATION){ 260 appr = 1; 261 break; 262 } 263 obj = obj->nobj; 264 } 265 } 266 } else appr = 1; /* gtyp != UNDEF */ 267 if(mtmp->mconf) appr = 0; 268 269 if(gx == u.ux && gy == u.uy && (dogroom != uroom || dogroom < 0)){ 270 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 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 int 381 inroom(xchar x, xchar y) 382 { 383 #ifndef QUEST 384 struct mkroom *croom = &rooms[0]; 385 while(croom->hx >= 0){ 386 if(croom->hx >= x-1 && croom->lx <= x+1 && 387 croom->hy >= y-1 && croom->ly <= y+1) 388 return(croom - rooms); 389 croom++; 390 } 391 #endif /* QUEST */ 392 return(-1); /* not in room or on door */ 393 } 394 395 bool 396 tamedog(struct monst *mtmp, struct obj *obj) 397 { 398 struct monst *mtmp2; 399 400 if(flags.moonphase == FULL_MOON && night() && rn2(6)) 401 return(0); 402 403 /* If we cannot tame him, at least he's no longer afraid. */ 404 mtmp->mflee = 0; 405 mtmp->mfleetim = 0; 406 if(mtmp->mtame || mtmp->mfroz || 407 #ifndef NOWORM 408 mtmp->wormno || 409 #endif /* NOWORM */ 410 mtmp->isshk || mtmp->isgd || index(" &@12", mtmp->data->mlet)) 411 return(0); /* no tame long worms? */ 412 if(obj) { 413 if(dogfood(obj) >= MANFOOD) return(0); 414 if(cansee(mtmp->mx,mtmp->my)){ 415 pline("%s devours the %s.", Monnam(mtmp), 416 objects[obj->otyp].oc_name); 417 } 418 obfree(obj, NULL); 419 } 420 mtmp2 = newmonst(sizeof(struct edog) + mtmp->mnamelth); 421 *mtmp2 = *mtmp; 422 mtmp2->mxlth = sizeof(struct edog); 423 if(mtmp->mnamelth) strcpy(NAME(mtmp2), NAME(mtmp)); 424 initedog(mtmp2); 425 replmon(mtmp,mtmp2); 426 return(1); 427 } 428