Source:NetHack 3.1.0/mthrowu.c
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1. /* SCCS Id: @(#)mthrowu.c 3.1 92/11/14 */ 2. /* Copyright (c) Stichting Mathematisch Centrum, Amsterdam, 1985. */ 3. /* NetHack may be freely redistributed. See license for details. */ 4. 5. #include "hack.h" 6. 7. STATIC_DCL void FDECL(drop_throw,(struct obj *,BOOLEAN_P,int,int)); 8. #ifndef MUSE 9. STATIC_DCL void FDECL(m_throw,(struct monst *,int,int,int,int,int,struct obj *)); 10. #endif 11. 12. #define URETREATING(x,y) (distmin(u.ux,u.uy,x,y) > distmin(u.ux0,u.uy0,x,y)) 13. 14. boolean FDECL(lined_up, (struct monst *)); 15. 16. #ifndef OVLB 17. 18. STATIC_DCL const char *breathwep[]; 19. 20. #else /* OVLB */ 21. 22. /* 23. * Keep consistent with breath weapons in zap.c, and AD_* in monattk.h. 24. */ 25. STATIC_OVL const char NEARDATA *breathwep[] = { 26. "fragments", 27. "fire", 28. "frost", 29. "sleep gas", 30. "death", 31. "lightning", 32. "poison gas", 33. "acid", 34. "strange breath #8", 35. "strange breath #9" 36. }; 37. 38. int 39. thitu(tlev, dam, obj, name) /* u is hit by sth, but not a monster */ 40. register int tlev, dam; 41. struct obj *obj; 42. register const char *name; 43. { 44. const char *onm = (obj && obj_is_pname(obj)) ? the(name) : an(name); 45. boolean is_acid = (obj && obj->otyp == ACID_VENOM); 46. 47. if(u.uac + tlev <= rnd(20)) { 48. if(Blind || !flags.verbose) pline("It misses."); 49. else You("are almost hit by %s!", onm); 50. return(0); 51. } else { 52. if(Blind || !flags.verbose) You("are hit!"); 53. else You("are hit by %s!", onm); 54. #ifdef POLYSELF 55. if (obj && objects[obj->otyp].oc_material == SILVER 56. && hates_silver(uasmon)) { 57. dam += rnd(20); 58. pline("The silver sears your flesh!"); 59. exercise(A_CON, FALSE); 60. } 61. if (is_acid && resists_acid(uasmon)) 62. pline("It doesn't seem to hurt you."); 63. else { 64. #endif 65. if (is_acid) pline("It burns!"); 66. if (Half_physical_damage) dam = (dam+1) / 2; 67. losehp(dam, name, (obj && obj_is_pname(obj)) ? 68. KILLED_BY : KILLED_BY_AN); 69. exercise(A_STR, FALSE); 70. #ifdef POLYSELF 71. } 72. #endif 73. return(1); 74. } 75. } 76. 77. /* Be sure this corresponds with what happens to player-thrown objects in 78. * dothrow.c (for consistency). --KAA 79. */ 80. 81. STATIC_OVL void 82. drop_throw(obj, ohit, x, y) 83. register struct obj *obj; 84. boolean ohit; 85. int x,y; 86. { 87. int create; 88. struct monst *mtmp; 89. struct trap *t; 90. 91. if (obj->otyp == CREAM_PIE || obj->oclass == VENOM_CLASS) 92. create = 0; 93. else if (ohit && 94. ((obj->otyp >= ARROW && obj->otyp <= SHURIKEN) || 95. obj->otyp == ROCK)) 96. create = !rn2(3); 97. else create = 1; 98. if (create && !((mtmp = m_at(x, y)) && (mtmp->mtrapped) && 99. (t = t_at(x, y)) && ((t->ttyp == PIT) || 100. (t->ttyp == SPIKED_PIT))) && 101. !flooreffects(obj,x,y,"fall")) { /* don't double-dip on damage */ 102. place_object(obj, x, y); 103. obj->nobj = fobj; 104. fobj = obj; 105. stackobj(fobj); 106. } else obfree(obj, (struct obj*) 0); 107. } 108. 109. #endif /* OVLB */ 110. #ifdef OVL1 111. 112. #ifndef MUSE 113. STATIC_OVL 114. #endif 115. void 116. m_throw(mon, x, y, dx, dy, range, obj) 117. register struct monst *mon; 118. register int x,y,dx,dy,range; /* direction and range */ 119. register struct obj *obj; 120. { 121. register struct monst *mtmp; 122. struct obj *singleobj; 123. char sym = obj->oclass; 124. int damage; 125. int hitu, blindinc=0; 126. 127. bhitpos.x = x; 128. bhitpos.y = y; 129. 130. singleobj = splitobj(obj, obj->quan - 1L); 131. /* splitobj leaves the new object in the chain (i.e. the monster's 132. * inventory). Remove it. We can do this in 1 line, but it's highly 133. * dependent on the fact that we know splitobj() places it immediately 134. * after obj. 135. */ 136. obj->nobj = singleobj->nobj; 137. /* Get rid of object. This cannot be done later on; what if the 138. * player dies before then, leaving the monster with 0 daggers? 139. * (This caused the infamous 2^32-1 orcish dagger bug). 140. */ 141. if (!obj->quan) { 142. if(obj->oclass == VENOM_CLASS) { 143. /* venom is not in the monster's inventory chain */ 144. dealloc_obj(obj); 145. } else { 146. #ifdef MUSE 147. /* not possibly_unwield, which checks the object's */ 148. /* location, not its existence */ 149. if (MON_WEP(mon) == obj) 150. MON_NOWEP(mon); 151. #endif 152. m_useup(mon, obj); 153. } 154. } 155. 156. if (singleobj->cursed && (dx || dy) && !rn2(7)) { 157. if(canseemon(mon) && flags.verbose) { 158. if((singleobj->oclass == WEAPON_CLASS || 159. singleobj->oclass == GEM_CLASS) 160. && objects[singleobj->otyp].w_propellor) 161. pline("%s misfires!", Monnam(mon)); 162. else 163. pline("The %s slips as %s throws it!", 164. xname(singleobj), mon_nam(mon)); 165. } 166. dx = rn2(3)-1; 167. dy = rn2(3)-1; 168. /* pre-check validity of new direction */ 169. if((!dx && !dy) 170. || !isok(bhitpos.x+dx,bhitpos.y+dy) 171. /* missile hits the wall */ 172. || IS_WALL(levl[bhitpos.x+dx][bhitpos.y+dy].typ) 173. || levl[bhitpos.x+dx][bhitpos.y+dy].typ == SDOOR 174. || levl[bhitpos.x+dx][bhitpos.y+dy].typ == SCORR) { 175. drop_throw(singleobj, 0, bhitpos.x, bhitpos.y); 176. return; 177. } 178. } 179. 180. /* Note: drop_throw may destroy singleobj. Since obj must be destroyed 181. * early to avoid the dagger bug, anyone who modifies this code should 182. * be careful not to use either one after it's been freed. 183. */ 184. if (sym) tmp_at(DISP_FLASH, obj_to_glyph(singleobj)); 185. while(range-- > 0) { /* Actually the loop is always exited by break */ 186. boolean vis; 187. 188. bhitpos.x += dx; 189. bhitpos.y += dy; 190. vis = cansee(bhitpos.x, bhitpos.y); 191. if(MON_AT(bhitpos.x, bhitpos.y)) { 192. boolean ismimic; 193. 194. mtmp = m_at(bhitpos.x,bhitpos.y); 195. ismimic = mtmp->m_ap_type && 196. mtmp->m_ap_type != M_AP_MONSTER; 197. 198. /* don't use distance/size modifiers since target was u */ 199. if(find_mac(mtmp) + 8 + singleobj->spe <= rnd(20)) { 200. if (!ismimic) { 201. if (!vis) pline("It is missed."); 202. else miss(distant_name(singleobj,xname), mtmp); 203. } 204. if (!range) { /* Last position; object drops */ 205. drop_throw(singleobj, 0, mtmp->mx, mtmp->my); 206. break; 207. } 208. #ifdef MUSE 209. } else if (singleobj->oclass == POTION_CLASS) { 210. if (ismimic) seemimic(mtmp); 211. if (vis) singleobj->dknown = 1; 212. potionhit(mtmp, singleobj); 213. break; 214. #endif 215. } else { 216. damage = dmgval(singleobj, mtmp->data); 217. if (damage < 1) damage = 1; 218. if (singleobj->otyp==ACID_VENOM && resists_acid(mtmp->data)) 219. damage = 0; 220. if (ismimic) seemimic(mtmp); 221. if (!vis) pline("It is hit%s", exclam(damage)); 222. else hit(distant_name(singleobj,xname), 223. mtmp,exclam(damage)); 224. if (singleobj->opoisoned) { 225. if (resists_poison(mtmp->data)) { 226. if (vis) 227. pline("The poison doesn't seem to affect %s.", 228. mon_nam(mtmp)); 229. } else { 230. if (rn2(30)) damage += rnd(6); 231. else { 232. if (vis) 233. pline("The poison was deadly..."); 234. damage = mtmp->mhp; 235. } 236. } 237. } 238. if (objects[singleobj->otyp].oc_material == SILVER 239. && hates_silver(mtmp->data)) { 240. if (vis) pline("The silver sears %s's flesh!", 241. mon_nam(mtmp)); 242. else pline("Its flesh is seared!"); 243. } 244. if (singleobj->otyp==ACID_VENOM && cansee(mtmp->mx,mtmp->my)){ 245. if (resists_acid(mtmp->data)) { 246. pline("%s is unaffected.", vis ? Monnam(mtmp) 247. : "It"); 248. damage = 0; 249. } else if (vis) 250. pline("The acid burns %s!", mon_nam(mtmp)); 251. else pline("It is burned!"); 252. } 253. mtmp->mhp -= damage; 254. if(mtmp->mhp < 1) { 255. pline("%s is %s!", vis ? Monnam(mtmp) : "It", 256. (is_demon(mtmp->data) || 257. is_undead(mtmp->data) || !vis) ? 258. "destroyed" : "killed"); 259. mondied(mtmp); 260. } 261. 262. if(((singleobj->otyp == CREAM_PIE) || 263. (singleobj->otyp == BLINDING_VENOM)) 264. && haseyes(mtmp->data)) { 265. if (vis) 266. pline("%s is blinded by %s.", 267. Monnam(mtmp), the(xname(singleobj))); 268. if(mtmp->msleep) mtmp->msleep = 0; 269. mtmp->mcansee = 0; 270. { 271. register unsigned rnd_tmp = rnd(25) + 20; 272. if((mtmp->mblinded + rnd_tmp) > 127) 273. mtmp->mblinded = 127; 274. else mtmp->mblinded += rnd_tmp; 275. } 276. } 277. drop_throw(singleobj, 1, bhitpos.x, bhitpos.y); 278. break; 279. } 280. } 281. if (bhitpos.x == u.ux && bhitpos.y == u.uy) { 282. if (multi) nomul(0); 283. 284. #ifdef MUSE 285. if (singleobj->oclass == POTION_CLASS) { 286. if (!Blind) singleobj->dknown = 1; 287. potionhit(&youmonst, singleobj); 288. break; 289. } 290. #endif 291. switch(singleobj->otyp) { 292. int dam, hitv; 293. case CREAM_PIE: 294. case BLINDING_VENOM: 295. hitu = thitu(8, 0, singleobj, xname(singleobj)); 296. break; 297. default: 298. dam = dmgval(singleobj, uasmon); 299. hitv = 3 - distmin(u.ux,u.uy, mon->mx,mon->my); 300. if (hitv < -4) hitv = -4; 301. if (is_elf(mon->data) && 302. objects[singleobj->otyp].w_propellor 303. == WP_BOW) { 304. hitv++; 305. #ifdef MUSE 306. if (MON_WEP(mon) && 307. MON_WEP(mon)->otyp == ELVEN_BOW) 308. hitv++; 309. #endif 310. if(singleobj->otyp == ELVEN_ARROW) dam++; 311. } 312. #ifdef POLYSELF 313. if (bigmonst(uasmon)) hitv++; 314. #endif 315. hitv += 8+singleobj->spe; 316. 317. if (dam < 1) dam = 1; 318. hitu = thitu(hitv, dam, 319. singleobj, xname(singleobj)); 320. } 321. if (hitu && singleobj->opoisoned) 322. /* it's safe to call xname twice because it's the 323. same object both times... */ 324. poisoned(xname(singleobj), A_STR, xname(singleobj), 10); 325. if(hitu && (singleobj->otyp == CREAM_PIE || 326. singleobj->otyp == BLINDING_VENOM)) { 327. blindinc = rnd(25); 328. if(singleobj->otyp == CREAM_PIE) { 329. if(!Blind) pline("Yecch! You've been creamed."); 330. else pline("There's something sticky all over your %s.", body_part(FACE)); 331. } else { /* venom in the eyes */ 332. if(Blindfolded) /* nothing */ ; 333. else if(!Blind) pline("The venom blinds you."); 334. else Your("%s sting.", 335. makeplural(body_part(EYE))); 336. } 337. } 338. stop_occupation(); 339. if (hitu || !range) { 340. drop_throw(singleobj, hitu, u.ux, u.uy); 341. break; 342. } 343. } else if (!range /* reached end of path */ 344. /* missile hits edge of screen */ 345. || !isok(bhitpos.x+dx,bhitpos.y+dy) 346. /* missile hits the wall */ 347. || IS_WALL(levl[bhitpos.x+dx][bhitpos.y+dy].typ) 348. || levl[bhitpos.x+dx][bhitpos.y+dy].typ == SDOOR 349. || levl[bhitpos.x+dx][bhitpos.y+dy].typ == SCORR 350. #ifdef SINKS 351. /* Thrown objects "sink" */ 352. || IS_SINK(levl[bhitpos.x][bhitpos.y].typ) 353. #endif 354. ) { 355. drop_throw(singleobj, 0, bhitpos.x, bhitpos.y); 356. break; 357. } 358. tmp_at(bhitpos.x, bhitpos.y); 359. delay_output(); 360. } 361. tmp_at(bhitpos.x, bhitpos.y); 362. delay_output(); 363. tmp_at(DISP_END, 0); 364. /* blindfold keeps substances out of your eyes */ 365. if (blindinc && !Blindfolded) { 366. u.ucreamed += blindinc; 367. make_blinded(Blinded + blindinc,FALSE); 368. } 369. } 370. 371. #endif /* OVL1 */ 372. #ifdef OVLB 373. 374. /* Remove an item from the monster's inventory. 375. */ 376. void 377. m_useup(mon, obj) 378. struct monst *mon; 379. struct obj *obj; 380. { 381. struct obj *otmp, *prev; 382. 383. if (obj->quan > 1L) { 384. obj->quan--; 385. return; 386. } 387. prev = ((struct obj *) 0); 388. for (otmp = mon->minvent; otmp; otmp = otmp->nobj) { 389. if (otmp == obj) { 390. if (prev) 391. prev->nobj = obj->nobj; 392. else 393. mon->minvent = obj->nobj; 394. dealloc_obj(obj); 395. break; 396. } 397. prev = otmp; 398. } 399. } 400. 401. #endif /* OVLB */ 402. #ifdef OVL1 403. 404. void 405. thrwmu(mtmp) /* monster throws item at you */ 406. register struct monst *mtmp; 407. { 408. struct obj *otmp; 409. register xchar x, y; 410. 411. if(lined_up(mtmp)) { 412. #ifdef MUSE 413. if (mtmp->weapon_check == NEED_WEAPON || !MON_WEP(mtmp)) { 414. mtmp->weapon_check = NEED_RANGED_WEAPON; 415. /* mon_wield_item resets weapon_check as appropriate */ 416. if(mon_wield_item(mtmp) != 0) return; 417. } 418. #endif 419. if((otmp = select_rwep(mtmp))) { 420. /* If you are coming toward the monster, the monster 421. * should try to soften you up with missiles. If you are 422. * going away, you are probably hurt or running. Give 423. * chase, but if you are getting too far away, throw. 424. */ 425. x = mtmp->mx; 426. y = mtmp->my; 427. if(!URETREATING(x,y) || 428. !rn2(BOLT_LIM-distmin(x,y,mtmp->mux,mtmp->muy))) 429. { 430. const char *verb = "throws"; 431. 432. if (otmp->otyp == ARROW 433. || otmp->otyp == ELVEN_ARROW 434. || otmp->otyp == ORCISH_ARROW 435. || otmp->otyp == CROSSBOW_BOLT) verb = "shoots"; 436. if (canseemon(mtmp)) { 437. pline("%s %s %s!", Monnam(mtmp), verb, 438. obj_is_pname(otmp) ? 439. the(singular(otmp, xname)) : 440. an(singular(otmp, xname))); 441. } 442. m_throw(mtmp, mtmp->mx, mtmp->my, sgn(tbx), sgn(tby), 443. distmin(mtmp->mx,mtmp->my,mtmp->mux,mtmp->muy), otmp); 444. nomul(0); 445. return; 446. } 447. } 448. } 449. } 450. 451. #endif /* OVL1 */ 452. #ifdef OVLB 453. 454. int 455. spitmu(mtmp, mattk) /* monster spits substance at you */ 456. register struct monst *mtmp; 457. register struct attack *mattk; 458. { 459. register struct obj *otmp; 460. 461. if(mtmp->mcan) { 462. 463. if(flags.soundok) 464. pline("A dry rattle comes from %s throat", 465. s_suffix(mon_nam(mtmp))); 466. return 0; 467. } 468. if(lined_up(mtmp)) { 469. switch (mattk->adtyp) { 470. case AD_BLND: 471. case AD_DRST: 472. otmp = mksobj(BLINDING_VENOM, TRUE, FALSE); 473. break; 474. default: 475. impossible("bad attack type in spitmu"); 476. /* fall through */ 477. case AD_ACID: 478. otmp = mksobj(ACID_VENOM, TRUE, FALSE); 479. break; 480. } 481. if(!rn2(BOLT_LIM-distmin(mtmp->mx,mtmp->my,mtmp->mux,mtmp->muy))) { 482. if (canseemon(mtmp)) 483. pline("%s spits venom!", Monnam(mtmp)); 484. m_throw(mtmp, mtmp->mx, mtmp->my, sgn(tbx), sgn(tby), 485. distmin(mtmp->mx,mtmp->my,mtmp->mux,mtmp->muy), otmp); 486. nomul(0); 487. return 0; 488. } 489. } 490. return 0; 491. } 492. 493. #endif /* OVLB */ 494. #ifdef OVL1 495. 496. int 497. breamu(mtmp, mattk) /* monster breathes at you (ranged) */ 498. register struct monst *mtmp; 499. register struct attack *mattk; 500. { 501. /* if new breath types are added, change AD_ACID to max type */ 502. int typ = (mattk->adtyp == AD_RBRE) ? rnd(AD_ACID) : mattk->adtyp ; 503. 504. if(lined_up(mtmp)) { 505. 506. if(mtmp->mcan) { 507. if(flags.soundok) { 508. if(canseemon(mtmp)) 509. pline("%s coughs.", Monnam(mtmp)); 510. else 511. You("hear a cough."); 512. } 513. return(0); 514. } 515. if(!mtmp->mspec_used && rn2(3)) { 516. 517. if((typ >= AD_MAGM) && (typ <= AD_ACID)) { 518. 519. if(canseemon(mtmp)) 520. pline("%s breathes %s!", Monnam(mtmp), 521. breathwep[typ-1]); 522. buzz((int) (-20 - (typ-1)), (int)mattk->damn, 523. mtmp->mx, mtmp->my, sgn(tbx), sgn(tby)); 524. nomul(0); 525. /* breath runs out sometimes. Also, give monster some 526. * cunning; don't breath if the player fell asleep. 527. */ 528. if(!rn2(3)) 529. mtmp->mspec_used = 10+rn2(20); 530. if(typ == AD_SLEE && !Sleep_resistance) 531. mtmp->mspec_used += rnd(20); 532. } else impossible("Breath weapon %d used", typ-1); 533. } 534. } 535. return(1); 536. } 537. 538. boolean 539. linedup(ax, ay, bx, by) 540. register xchar ax, ay, bx, by; 541. { 542. tbx = ax - bx; /* These two values are set for use */ 543. tby = ay - by; /* after successful return. */ 544. 545. if((!tbx || !tby || abs(tbx) == abs(tby)) /* straight line or diagonal */ 546. && distmin(tbx, tby, 0, 0) < BOLT_LIM) { 547. 548. if(ax == u.ux && ay == u.uy) return couldsee(bx,by); 549. else if(clear_path(ax,ay,bx,by)) return TRUE; 550. } 551. return FALSE; 552. } 553. 554. boolean 555. lined_up(mtmp) /* is mtmp in position to use ranged attack? */ 556. register struct monst *mtmp; 557. { 558. return(linedup(mtmp->mux,mtmp->muy,mtmp->mx,mtmp->my)); 559. } 560. 561. #endif /* OVL1 */ 562. #ifdef OVL0 563. 564. /* Check if a monster is carrying a particular item. 565. */ 566. struct obj * 567. m_carrying(mtmp, type) 568. struct monst *mtmp; 569. int type; 570. { 571. register struct obj *otmp; 572. 573. for(otmp = mtmp->minvent; otmp; otmp = otmp->nobj) 574. if(otmp->otyp == type) 575. return(otmp); 576. return((struct obj *) 0); 577. } 578. 579. #endif /* OVL0 */ 580. 581. /*mthrowu.c*/
