src/cmd-magiceat.c

   1 /*!
   2  * @file cmd6.c
   3  * @brief プレイヤーのアイテムに関するコマンドの実装2 / Spell/Prayer commands
   4  * @date 2014/01/27
   5  * @author
   6  * <pre>
   7  * Copyright (c) 1997 Ben Harrison, James E. Wilson, Robert A. Koeneke
   8  * This software may be copied and distributed for educational, research,
   9  * and not for profit purposes provided that this copyright and statement
  10  * are included in all such copies.  Other copyrights may also apply.
  11  * 2014 Deskull rearranged comment for Doxygen.\n
  12  * </pre>
  13  * @details
  14  * <pre>
  15  * This file includes code for eating food, drinking potions,
  16  * reading scrolls, aiming wands, using staffs, zapping rods,
  17  * and activating artifacts.
  18  *
  19  * In all cases, if the player becomes "aware" of the item's use
  20  * by testing it, mark it as "aware" and reward some experience
  21  * based on the object's level, always rounding up.  If the player
  22  * remains "unaware", mark that object "kind" as "tried".
  23  *
  24  * This code now correctly handles the unstacking of wands, staffs,
  25  * and rods.  Note the overly paranoid warning about potential pack
  26  * overflow, which allows the player to use and drop a stacked item.
  27  *
  28  * In all "unstacking" scenarios, the "used" object is "carried" as if
  29  * the player had just picked it up.  In particular, this means that if
  30  * the use of an item induces pack overflow, that item will be dropped.
  31  *
  32  * For simplicity, these routines induce a full "pack reorganization"
  33  * which not only combines similar items, but also reorganizes various
  34  * items to obey the current "sorting" method.  This may require about
  35  * 400 item comparisons, but only occasionally.
  36  *
  37  * There may be a BIG problem with any "effect" that can cause "changes"
  38  * to the p_ptr->inventory_list.  For example, a "scroll of recharging" can cause
  39  * a wand/staff to "disappear", moving the p_ptr->inventory_list up.  Luckily, the
  40  * scrolls all appear BEFORE the staffs/wands, so this is not a problem.
  41  * But, for example, a "staff of recharging" could cause MAJOR problems.
  42  * In such a case, it will be best to either (1) "postpone" the effect
  43  * until the end of the function, or (2) "change" the effect, say, into
  44  * giving a staff "negative" charges, or "turning a staff into a stick".
  45  * It seems as though a "rod of recharging" might in fact cause problems.
  46  * The basic problem is that the act of recharging (and destroying) an
  47  * item causes the inducer of that action to "move", causing "o_ptr" to
  48  * no longer point at the correct item, with horrifying results.
  49  *
  50  * Note that food/potions/scrolls no longer use bit-flags for effects,
  51  * but instead use the "sval" (which is also used to sort the objects).
  52  * </pre>
  53  */
  54
  55 #include "angband.h"
  56 #include "util.h"
  57 #include "term.h"
  58
  59 #include "cmd-basic.h"
  60 #include "cmd-usestaff.h"
  61 #include "cmd-zaprod.h"
  62 #include "cmd-zapwand.h"
  63 #include "cmd-magiceat.h"
  64 #include "avatar.h"
  65 #include "player-status.h"
  66 #include "spells.h"
  67 #include "player-class.h"
  68 #include "objectkind.h"
  69 #include "targeting.h"
  70
  71 /*!
  72  * @brief 魔道具術師の取り込んだ魔力一覧から選択/閲覧する /
  73  * @param only_browse 閲覧するだけならばTRUE
  74  * @return 選択した魔力のID、キャンセルならば-1を返す
  75  */
  76 static OBJECT_SUBTYPE_VALUE select_magic_eater(bool only_browse)
  77 {
  78         OBJECT_SUBTYPE_VALUE ext = 0;
  79         char choice;
  80         bool flag, request_list;
  81         OBJECT_TYPE_VALUE tval = 0;
  82         int             ask = TRUE;
  83         OBJECT_SUBTYPE_VALUE i = 0;
  84         char            out_val[160];
  85
  86         int menu_line = (use_menu ? 1 : 0);
  87
  88         COMMAND_CODE sn;
  89         if (repeat_pull(&sn))
  90         {
  91                 /* Verify the spell */
  92                 if (sn >= EATER_EXT*2 && !(p_ptr->magic_num1[sn] > k_info[lookup_kind(TV_ROD, sn-EATER_EXT*2)].pval * (p_ptr->magic_num2[sn] - 1) * EATER_ROD_CHARGE))
  93                         return sn;
  94                 else if (sn < EATER_EXT*2 && !(p_ptr->magic_num1[sn] < EATER_CHARGE))
  95                         return sn;
  96         }
  97
  98         for (i = 0; i < 108; i++)
  99         {
 100                 if (p_ptr->magic_num2[i]) break;
 101         }
 102         if (i == 108)
 103         {
 104                 msg_print(_("魔法を覚えていない！", "You don't have any magic!"));
 105                 return -1;
 106         }
 107
 108         if (use_menu)
 109         {
 110                 screen_save();
 111
 112                 while(!tval)
 113                 {
 114 #ifdef JP
 115                         prt(format(" %s 杖", (menu_line == 1) ? "》" : "  "), 2, 14);
 116                         prt(format(" %s 魔法棒", (menu_line == 2) ? "》" : "  "), 3, 14);
 117                         prt(format(" %s ロッド", (menu_line == 3) ? "》" : "  "), 4, 14);
 118 #else
 119                         prt(format(" %s staff", (menu_line == 1) ? "> " : "  "), 2, 14);
 120                         prt(format(" %s wand", (menu_line == 2) ? "> " : "  "), 3, 14);
 121                         prt(format(" %s rod", (menu_line == 3) ? "> " : "  "), 4, 14);
 122 #endif
 123
 124                         if (only_browse) prt(_("どの種類の魔法を見ますか？", "Which type of magic do you browse?"), 0, 0);
 125                         else prt(_("どの種類の魔法を使いますか？", "Which type of magic do you use?"), 0, 0);
 126
 127                         choice = inkey();
 128                         switch(choice)
 129                         {
 130                         case ESCAPE:
 131                         case 'z':
 132                         case 'Z':
 133                                 screen_load();
 134                                 return -1;
 135                         case '2':
 136                         case 'j':
 137                         case 'J':
 138                                 menu_line++;
 139                                 break;
 140                         case '8':
 141                         case 'k':
 142                         case 'K':
 143                                 menu_line+= 2;
 144                                 break;
 145                         case '\r':
 146                         case 'x':
 147                         case 'X':
 148                                 ext = (menu_line-1)*EATER_EXT;
 149                                 if (menu_line == 1) tval = TV_STAFF;
 150                                 else if (menu_line == 2) tval = TV_WAND;
 151                                 else tval = TV_ROD;
 152                                 break;
 153                         }
 154                         if (menu_line > 3) menu_line -= 3;
 155                 }
 156                 screen_load();
 157         }
 158         else
 159         {
 160         while (TRUE)
 161         {
 162                 if (!get_com(_("[A] 杖, [B] 魔法棒, [C] ロッド:", "[A] staff, [B] wand, [C] rod:"), &choice, TRUE))
 163                 {
 164                         return -1;
 165                 }
 166                 if (choice == 'A' || choice == 'a')
 167                 {
 168                         ext = 0;
 169                         tval = TV_STAFF;
 170                         break;
 171                 }
 172                 if (choice == 'B' || choice == 'b')
 173                 {
 174                         ext = EATER_EXT;
 175                         tval = TV_WAND;
 176                         break;
 177                 }
 178                 if (choice == 'C' || choice == 'c')
 179                 {
 180                         ext = EATER_EXT*2;
 181                         tval = TV_ROD;
 182                         break;
 183                 }
 184         }
 185         }
 186         for (i = ext; i < ext + EATER_EXT; i++)
 187         {
 188                 if (p_ptr->magic_num2[i])
 189                 {
 190                         if (use_menu) menu_line = i-ext+1;
 191                         break;
 192                 }
 193         }
 194         if (i == ext+EATER_EXT)
 195         {
 196                 msg_print(_("その種類の魔法は覚えていない！", "You don't have that type of magic!"));
 197                 return -1;
 198         }
 199
 200         /* Nothing chosen yet */
 201         flag = FALSE;
 202
 203         /* Build a prompt */
 204         if (only_browse) strnfmt(out_val, 78, _("('*'で一覧, ESCで中断) どの魔力を見ますか？",
 205                                                                                         "(*=List, ESC=exit) Browse which power? "));
 206         else strnfmt(out_val, 78, _("('*'で一覧, ESCで中断) どの魔力を使いますか？",
 207                                                                 "(*=List, ESC=exit) Use which power? "));
 208         screen_save();
 209
 210         request_list = always_show_list;
 211
 212         while (!flag)
 213         {
 214                 /* Show the list */
 215                 if (request_list || use_menu)
 216                 {
 217                         byte y, x = 0;
 218                         OBJECT_SUBTYPE_VALUE ctr;
 219                         PERCENTAGE chance;
 220                         KIND_OBJECT_IDX k_idx;
 221                         char dummy[80];
 222                         POSITION x1, y1;
 223                         DEPTH level;
 224                         byte col;
 225
 226                         strcpy(dummy, "");
 227
 228                         for (y = 1; y < 20; y++)
 229                                 prt("", y, x);
 230
 231                         y = 1;
 232
 233                         /* Print header(s) */
 234 #ifdef JP
 235                         prt(format("                           %s 失率                           %s 失率", (tval == TV_ROD ? "  状態  " : "使用回数"), (tval == TV_ROD ? "  状態  " : "使用回数")), y++, x);
 236 #else
 237                         prt(format("                           %s Fail                           %s Fail", (tval == TV_ROD ? "  Stat  " : " Charges"), (tval == TV_ROD ? "  Stat  " : " Charges")), y++, x);
 238 #endif
 239
 240                         /* Print list */
 241                         for (ctr = 0; ctr < EATER_EXT; ctr++)
 242                         {
 243                                 if (!p_ptr->magic_num2[ctr+ext]) continue;
 244
 245                                 k_idx = lookup_kind(tval, ctr);
 246
 247                                 if (use_menu)
 248                                 {
 249                                         if (ctr == (menu_line-1))
 250                                                 strcpy(dummy, _("》", "> "));
 251                                         else
 252                                                 strcpy(dummy, "  ");
 253                                 }
 254                                 /* letter/number for power selection */
 255                                 else
 256                                 {
 257                                         char letter;
 258                                         if (ctr < 26)
 259                                                 letter = I2A(ctr);
 260                                         else
 261                                                 letter = '0' + ctr - 26;
 262                                         sprintf(dummy, "%c)",letter);
 263                                 }
 264                                 x1 = ((ctr < EATER_EXT/2) ? x : x + 40);
 265                                 y1 = ((ctr < EATER_EXT/2) ? y + ctr : y + ctr - EATER_EXT/2);
 266                                 level = (tval == TV_ROD ? k_info[k_idx].level * 5 / 6 - 5 : k_info[k_idx].level);
 267                                 chance = level * 4 / 5 + 20;
 268                                 chance -= 3 * (adj_mag_stat[p_ptr->stat_ind[mp_ptr->spell_stat]] - 1);
 269                                 level /= 2;
 270                                 if (p_ptr->lev > level)
 271                                 {
 272                                         chance -= 3 * (p_ptr->lev - level);
 273                                 }
 274                                 chance = mod_spell_chance_1(chance);
 275                                 chance = MAX(chance, adj_mag_fail[p_ptr->stat_ind[mp_ptr->spell_stat]]);
 276                                 /* Stunning makes spells harder */
 277                                 if (p_ptr->stun > 50) chance += 25;
 278                                 else if (p_ptr->stun) chance += 15;
 279
 280                                 if (chance > 95) chance = 95;
 281
 282                                 chance = mod_spell_chance_2(chance);
 283
 284                                 col = TERM_WHITE;
 285
 286                                 if (k_idx)
 287                                 {
 288                                         if (tval == TV_ROD)
 289                                         {
 290                                                 strcat(dummy, format(
 291                                                                _(" %-22.22s 充填:%2d/%2d%3d%%", " %-22.22s   (%2d/%2d) %3d%%"),
 292                                                                k_name + k_info[k_idx].name,
 293                                                                p_ptr->magic_num1[ctr+ext] ?
 294                                                                (p_ptr->magic_num1[ctr+ext] - 1) / (EATER_ROD_CHARGE * k_info[k_idx].pval) +1 : 0,
 295                                                                p_ptr->magic_num2[ctr+ext], chance));
 296                                                 if (p_ptr->magic_num1[ctr+ext] > k_info[k_idx].pval * (p_ptr->magic_num2[ctr+ext]-1) * EATER_ROD_CHARGE) col = TERM_RED;
 297                                         }
 298                                         else
 299                                         {
 300                                                 strcat(dummy, format(" %-22.22s    %2d/%2d %3d%%", k_name + k_info[k_idx].name, (s16b)(p_ptr->magic_num1[ctr+ext]/EATER_CHARGE), p_ptr->magic_num2[ctr+ext], chance));
 301                                                 if (p_ptr->magic_num1[ctr+ext] < EATER_CHARGE) col = TERM_RED;
 302                                         }
 303                                 }
 304                                 else
 305                                         strcpy(dummy, "");
 306                                 c_prt(col, dummy, y1, x1);
 307                         }
 308                 }
 309
 310                 if (!get_com(out_val, &choice, FALSE)) break;
 311
 312                 if (use_menu && choice != ' ')
 313                 {
 314                         switch (choice)
 315                         {
 316                                 case '0':
 317                                 {
 318                                         screen_load();
 319                                         return 0;
 320                                 }
 321
 322                                 case '8':
 323                                 case 'k':
 324                                 case 'K':
 325                                 {
 326                                         do
 327                                         {
 328                                                 menu_line += EATER_EXT - 1;
 329                                                 if (menu_line > EATER_EXT) menu_line -= EATER_EXT;
 330                                         } while(!p_ptr->magic_num2[menu_line+ext-1]);
 331                                         break;
 332                                 }
 333
 334                                 case '2':
 335                                 case 'j':
 336                                 case 'J':
 337                                 {
 338                                         do
 339                                         {
 340                                                 menu_line++;
 341                                                 if (menu_line > EATER_EXT) menu_line -= EATER_EXT;
 342                                         } while(!p_ptr->magic_num2[menu_line+ext-1]);
 343                                         break;
 344                                 }
 345
 346                                 case '4':
 347                                 case 'h':
 348                                 case 'H':
 349                                 case '6':
 350                                 case 'l':
 351                                 case 'L':
 352                                 {
 353                                         bool reverse = FALSE;
 354                                         if ((choice == '4') || (choice == 'h') || (choice == 'H')) reverse = TRUE;
 355                                         if (menu_line > EATER_EXT/2)
 356                                         {
 357                                                 menu_line -= EATER_EXT/2;
 358                                                 reverse = TRUE;
 359                                         }
 360                                         else menu_line+=EATER_EXT/2;
 361                                         while(!p_ptr->magic_num2[menu_line+ext-1])
 362                                         {
 363                                                 if (reverse)
 364                                                 {
 365                                                         menu_line--;
 366                                                         if (menu_line < 2) reverse = FALSE;
 367                                                 }
 368                                                 else
 369                                                 {
 370                                                         menu_line++;
 371                                                         if (menu_line > EATER_EXT-1) reverse = TRUE;
 372                                                 }
 373                                         }
 374                                         break;
 375                                 }
 376
 377                                 case 'x':
 378                                 case 'X':
 379                                 case '\r':
 380                                 {
 381                                         i = menu_line - 1;
 382                                         ask = FALSE;
 383                                         break;
 384                                 }
 385                         }
 386                 }
 387
 388                 /* Request redraw */
 389                 if (use_menu && ask) continue;
 390
 391                 /* Request redraw */
 392                 if (!use_menu && ((choice == ' ') || (choice == '*') || (choice == '?')))
 393                 {
 394                         /* Hide the list */
 395                         if (request_list)
 396                         {
 397                                 /* Hide list */
 398                                 request_list = FALSE;
 399                                                                 screen_load();
 400                                 screen_save();
 401                         }
 402                         else
 403                                 request_list = TRUE;
 404
 405                         /* Redo asking */
 406                         continue;
 407                 }
 408
 409                 if (!use_menu)
 410                 {
 411                         if (isalpha(choice))
 412                         {
 413                                 /* Note verify */
 414                                 ask = (isupper(choice));
 415
 416                                 /* Lowercase */
 417                                 if (ask) choice = (char)tolower(choice);
 418
 419                                 /* Extract request */
 420                                 i = (islower(choice) ? A2I(choice) : -1);
 421                         }
 422                         else
 423                         {
 424                                 ask = FALSE; /* Can't uppercase digits */
 425
 426                                 i = choice - '0' + 26;
 427                         }
 428                 }
 429
 430                 /* Totally Illegal */
 431                 if ((i < 0) || (i > EATER_EXT) || !p_ptr->magic_num2[i+ext])
 432                 {
 433                         bell();
 434                         continue;
 435                 }
 436
 437                 if (!only_browse)
 438                 {
 439                         /* Verify it */
 440                         if (ask)
 441                         {
 442                                 char tmp_val[160];
 443
 444                                 /* Prompt */
 445                                 (void) strnfmt(tmp_val, 78, _("%sを使いますか？ ", "Use %s?"), k_name + k_info[lookup_kind(tval ,i)].name);
 446
 447                                 /* Belay that order */
 448                                 if (!get_check(tmp_val)) continue;
 449                         }
 450                         if (tval == TV_ROD)
 451                         {
 452                                 if (p_ptr->magic_num1[ext+i]  > k_info[lookup_kind(tval, i)].pval * (p_ptr->magic_num2[ext+i] - 1) * EATER_ROD_CHARGE)
 453                                 {
 454                                         msg_print(_("その魔法はまだ充填している最中だ。", "The magic are still charging."));
 455                                         msg_print(NULL);
 456                                         if (use_menu) ask = TRUE;
 457                                         continue;
 458                                 }
 459                         }
 460                         else
 461                         {
 462                                 if (p_ptr->magic_num1[ext+i] < EATER_CHARGE)
 463                                 {
 464                                         msg_print(_("その魔法は使用回数が切れている。", "The magic has no charges left."));
 465                                         msg_print(NULL);
 466                                         if (use_menu) ask = TRUE;
 467                                         continue;
 468                                 }
 469                         }
 470                 }
 471
 472                 /* Browse */
 473                 else
 474                 {
 475                         int line, j;
 476                         char temp[70 * 20];
 477
 478                         /* Clear lines, position cursor  (really should use strlen here) */
 479                         Term_erase(7, 23, 255);
 480                         Term_erase(7, 22, 255);
 481                         Term_erase(7, 21, 255);
 482                         Term_erase(7, 20, 255);
 483
 484                         roff_to_buf(k_text + k_info[lookup_kind(tval, i)].text, 62, temp, sizeof(temp));
 485                         for (j = 0, line = 21; temp[j]; j += 1 + strlen(&temp[j]))
 486                         {
 487                                 prt(&temp[j], line, 10);
 488                                 line++;
 489                         }
 490
 491                         continue;
 492                 }
 493
 494                 /* Stop the loop */
 495                 flag = TRUE;
 496         }
 497         screen_load();
 498
 499         if (!flag) return -1;
 500
 501         repeat_push(ext+i);
 502         return ext+i;
 503 }
 504
 505
 506 /*!
 507  * @brief 取り込んだ魔力を利用するコマンドのメインルーチン /
 508  * Use eaten rod, wand or staff
 509  * @param only_browse 閲覧するだけならばTRUE
 510  * @param powerful 強力発動中の処理ならばTRUE
 511  * @return 実際にコマンドを実行したならばTRUEを返す。
 512  */
 513 bool do_cmd_magic_eater(bool only_browse, bool powerful)
 514 {
 515         OBJECT_SUBTYPE_VALUE item;
 516         PERCENTAGE chance;
 517         DEPTH level;
 518         KIND_OBJECT_IDX k_idx;
 519         OBJECT_TYPE_VALUE tval;
 520         OBJECT_SUBTYPE_VALUE sval;
 521         bool use_charge = TRUE;
 522
 523         if (cmd_limit_confused(p_ptr)) return FALSE;
 524
 525         item = select_magic_eater(only_browse);
 526         if (item == -1)
 527         {
 528                 free_turn(p_ptr);
 529                 return FALSE;
 530         }
 531         if (item >= EATER_EXT*2) {tval = TV_ROD;sval = item - EATER_EXT*2;}
 532         else if (item >= EATER_EXT) {tval = TV_WAND;sval = item - EATER_EXT;}
 533         else {tval = TV_STAFF; sval = item;}
 534         k_idx = lookup_kind(tval, sval);
 535
 536         level = (tval == TV_ROD ? k_info[k_idx].level * 5 / 6 - 5 : k_info[k_idx].level);
 537         chance = level * 4 / 5 + 20;
 538         chance -= 3 * (adj_mag_stat[p_ptr->stat_ind[mp_ptr->spell_stat]] - 1);
 539         level /= 2;
 540         if (p_ptr->lev > level)
 541         {
 542                 chance -= 3 * (p_ptr->lev - level);
 543         }
 544         chance = mod_spell_chance_1(chance);
 545         chance = MAX(chance, adj_mag_fail[p_ptr->stat_ind[mp_ptr->spell_stat]]);
 546         /* Stunning makes spells harder */
 547         if (p_ptr->stun > 50) chance += 25;
 548         else if (p_ptr->stun) chance += 15;
 549
 550         if (chance > 95) chance = 95;
 551
 552         chance = mod_spell_chance_2(chance);
 553
 554         if (randint0(100) < chance)
 555         {
 556                 if (flush_failure) flush();
 557
 558                 msg_print(_("呪文をうまく唱えられなかった！", "You failed to get the magic off!"));
 559                 sound(SOUND_FAIL);
 560                 if (randint1(100) >= chance)
 561                         chg_virtue(p_ptr, V_CHANCE,-1);
 562                 take_turn(p_ptr, 100);
 563
 564                 return TRUE;
 565         }
 566         else
 567         {
 568                 DIRECTION dir = 0;
 569
 570                 if (tval == TV_ROD)
 571                 {
 572                         if ((sval >= SV_ROD_MIN_DIRECTION) && (sval != SV_ROD_HAVOC) && (sval != SV_ROD_AGGRAVATE) && (sval != SV_ROD_PESTICIDE))
 573                                 if (!get_aim_dir(&dir)) return FALSE;
 574                         rod_effect(sval, dir, &use_charge, powerful, TRUE);
 575                         if (!use_charge) return FALSE;
 576                 }
 577                 else if (tval == TV_WAND)
 578                 {
 579                         if (!get_aim_dir(&dir)) return FALSE;
 580                         wand_effect(sval, dir, powerful, TRUE);
 581                 }
 582                 else
 583                 {
 584                         staff_effect(sval, &use_charge, powerful, TRUE, TRUE);
 585                         if (!use_charge) return FALSE;
 586                 }
 587                 if (randint1(100) < chance)
 588                         chg_virtue(p_ptr, V_CHANCE,1);
 589         }
 590         take_turn(p_ptr, 100);
 591         if (tval == TV_ROD) p_ptr->magic_num1[item] += k_info[k_idx].pval * EATER_ROD_CHARGE;
 592         else p_ptr->magic_num1[item] -= EATER_CHARGE;
 593
 594         return TRUE;
 595 }