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 inventory.  For example, a "scroll of recharging" can cause
  39  * a wand/staff to "disappear", moving the inventory 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 "cmd-usestaff.h"
  57 #include "cmd-zaprod.h"
  58 #include "cmd-zapwand.h"
  59
  60
  61 /*!
  62  * @brief 魔道具術師の取り込んだ魔力一覧から選択/閲覧する /
  63  * @param only_browse 閲覧するだけならばTRUE
  64  * @return 選択した魔力のID、キャンセルならば-1を返す
  65  */
  66 static OBJECT_SUBTYPE_VALUE select_magic_eater(bool only_browse)
  67 {
  68         OBJECT_SUBTYPE_VALUE ext = 0;
  69         char choice;
  70         bool flag, request_list;
  71         OBJECT_TYPE_VALUE tval = 0;
  72         int             ask = TRUE;
  73         OBJECT_SUBTYPE_VALUE i = 0;
  74         char            out_val[160];
  75
  76         int menu_line = (use_menu ? 1 : 0);
  77
  78 #ifdef ALLOW_REPEAT
  79         COMMAND_CODE sn;
  80         if (repeat_pull(&sn))
  81         {
  82                 /* Verify the spell */
  83                 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))
  84                         return sn;
  85                 else if (sn < EATER_EXT*2 && !(p_ptr->magic_num1[sn] < EATER_CHARGE))
  86                         return sn;
  87         }
  88
  89 #endif /* ALLOW_REPEAT */
  90
  91         for (i = 0; i < 108; i++)
  92         {
  93                 if (p_ptr->magic_num2[i]) break;
  94         }
  95         if (i == 108)
  96         {
  97                 msg_print(_("魔法を覚えていない！", "You don't have any magic!"));
  98                 return -1;
  99         }
 100
 101         if (use_menu)
 102         {
 103                 screen_save();
 104
 105                 while(!tval)
 106                 {
 107 #ifdef JP
 108                         prt(format(" %s 杖", (menu_line == 1) ? "》" : "  "), 2, 14);
 109                         prt(format(" %s 魔法棒", (menu_line == 2) ? "》" : "  "), 3, 14);
 110                         prt(format(" %s ロッド", (menu_line == 3) ? "》" : "  "), 4, 14);
 111 #else
 112                         prt(format(" %s staff", (menu_line == 1) ? "> " : "  "), 2, 14);
 113                         prt(format(" %s wand", (menu_line == 2) ? "> " : "  "), 3, 14);
 114                         prt(format(" %s rod", (menu_line == 3) ? "> " : "  "), 4, 14);
 115 #endif
 116
 117                         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);
 118                         else prt(_("どの種類の魔法を使いますか？", "Which type of magic do you use?"), 0, 0);
 119
 120                         choice = inkey();
 121                         switch(choice)
 122                         {
 123                         case ESCAPE:
 124                         case 'z':
 125                         case 'Z':
 126                                 screen_load();
 127                                 return -1;
 128                         case '2':
 129                         case 'j':
 130                         case 'J':
 131                                 menu_line++;
 132                                 break;
 133                         case '8':
 134                         case 'k':
 135                         case 'K':
 136                                 menu_line+= 2;
 137                                 break;
 138                         case '\r':
 139                         case 'x':
 140                         case 'X':
 141                                 ext = (menu_line-1)*EATER_EXT;
 142                                 if (menu_line == 1) tval = TV_STAFF;
 143                                 else if (menu_line == 2) tval = TV_WAND;
 144                                 else tval = TV_ROD;
 145                                 break;
 146                         }
 147                         if (menu_line > 3) menu_line -= 3;
 148                 }
 149                 screen_load();
 150         }
 151         else
 152         {
 153         while (TRUE)
 154         {
 155                 if (!get_com(_("[A] 杖, [B] 魔法棒, [C] ロッド:", "[A] staff, [B] wand, [C] rod:"), &choice, TRUE))
 156                 {
 157                         return -1;
 158                 }
 159                 if (choice == 'A' || choice == 'a')
 160                 {
 161                         ext = 0;
 162                         tval = TV_STAFF;
 163                         break;
 164                 }
 165                 if (choice == 'B' || choice == 'b')
 166                 {
 167                         ext = EATER_EXT;
 168                         tval = TV_WAND;
 169                         break;
 170                 }
 171                 if (choice == 'C' || choice == 'c')
 172                 {
 173                         ext = EATER_EXT*2;
 174                         tval = TV_ROD;
 175                         break;
 176                 }
 177         }
 178         }
 179         for (i = ext; i < ext + EATER_EXT; i++)
 180         {
 181                 if (p_ptr->magic_num2[i])
 182                 {
 183                         if (use_menu) menu_line = i-ext+1;
 184                         break;
 185                 }
 186         }
 187         if (i == ext+EATER_EXT)
 188         {
 189                 msg_print(_("その種類の魔法は覚えていない！", "You don't have that type of magic!"));
 190                 return -1;
 191         }
 192
 193         /* Nothing chosen yet */
 194         flag = FALSE;
 195
 196         /* Build a prompt */
 197         if (only_browse) strnfmt(out_val, 78, _("('*'で一覧, ESCで中断) どの魔力を見ますか？",
 198                                                                                         "(*=List, ESC=exit) Browse which power? "));
 199         else strnfmt(out_val, 78, _("('*'で一覧, ESCで中断) どの魔力を使いますか？",
 200                                                                 "(*=List, ESC=exit) Use which power? "));
 201
 202         /* Save the screen */
 203         screen_save();
 204
 205         request_list = always_show_list;
 206
 207         /* Get a spell from the user */
 208         while (!flag)
 209         {
 210                 /* Show the list */
 211                 if (request_list || use_menu)
 212                 {
 213                         byte y, x = 0;
 214                         OBJECT_SUBTYPE_VALUE ctr;
 215                         PERCENTAGE chance;
 216                         IDX k_idx;
 217                         char dummy[80];
 218                         POSITION x1, y1;
 219                         int level;
 220                         byte col;
 221
 222                         strcpy(dummy, "");
 223
 224                         for (y = 1; y < 20; y++)
 225                                 prt("", y, x);
 226
 227                         y = 1;
 228
 229                         /* Print header(s) */
 230 #ifdef JP
 231                         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);
 232 #else
 233                         prt(format("                           %s Fail                           %s Fail", (tval == TV_ROD ? "  Stat  " : " Charges"), (tval == TV_ROD ? "  Stat  " : " Charges")), y++, x);
 234 #endif
 235
 236                         /* Print list */
 237                         for (ctr = 0; ctr < EATER_EXT; ctr++)
 238                         {
 239                                 if (!p_ptr->magic_num2[ctr+ext]) continue;
 240
 241                                 k_idx = lookup_kind(tval, ctr);
 242
 243                                 if (use_menu)
 244                                 {
 245                                         if (ctr == (menu_line-1))
 246                                                 strcpy(dummy, _("》", "> "));
 247                                         else
 248                                                 strcpy(dummy, "  ");
 249                                 }
 250                                 /* letter/number for power selection */
 251                                 else
 252                                 {
 253                                         char letter;
 254                                         if (ctr < 26)
 255                                                 letter = I2A(ctr);
 256                                         else
 257                                                 letter = '0' + ctr - 26;
 258                                         sprintf(dummy, "%c)",letter);
 259                                 }
 260                                 x1 = ((ctr < EATER_EXT/2) ? x : x + 40);
 261                                 y1 = ((ctr < EATER_EXT/2) ? y + ctr : y + ctr - EATER_EXT/2);
 262                                 level = (tval == TV_ROD ? k_info[k_idx].level * 5 / 6 - 5 : k_info[k_idx].level);
 263                                 chance = level * 4 / 5 + 20;
 264                                 chance -= 3 * (adj_mag_stat[p_ptr->stat_ind[mp_ptr->spell_stat]] - 1);
 265                                 level /= 2;
 266                                 if (p_ptr->lev > level)
 267                                 {
 268                                         chance -= 3 * (p_ptr->lev - level);
 269                                 }
 270                                 chance = mod_spell_chance_1(chance);
 271                                 chance = MAX(chance, adj_mag_fail[p_ptr->stat_ind[mp_ptr->spell_stat]]);
 272                                 /* Stunning makes spells harder */
 273                                 if (p_ptr->stun > 50) chance += 25;
 274                                 else if (p_ptr->stun) chance += 15;
 275
 276                                 if (chance > 95) chance = 95;
 277
 278                                 chance = mod_spell_chance_2(chance);
 279
 280                                 col = TERM_WHITE;
 281
 282                                 if (k_idx)
 283                                 {
 284                                         if (tval == TV_ROD)
 285                                         {
 286                                                 strcat(dummy, format(
 287                                                                _(" %-22.22s 充填:%2d/%2d%3d%%", " %-22.22s   (%2d/%2d) %3d%%"),
 288                                                                k_name + k_info[k_idx].name,
 289                                                                p_ptr->magic_num1[ctr+ext] ?
 290                                                                (p_ptr->magic_num1[ctr+ext] - 1) / (EATER_ROD_CHARGE * k_info[k_idx].pval) +1 : 0,
 291                                                                p_ptr->magic_num2[ctr+ext], chance));
 292                                                 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;
 293                                         }
 294                                         else
 295                                         {
 296                                                 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));
 297                                                 if (p_ptr->magic_num1[ctr+ext] < EATER_CHARGE) col = TERM_RED;
 298                                         }
 299                                 }
 300                                 else
 301                                         strcpy(dummy, "");
 302                                 c_prt(col, dummy, y1, x1);
 303                         }
 304                 }
 305
 306                 if (!get_com(out_val, &choice, FALSE)) break;
 307
 308                 if (use_menu && choice != ' ')
 309                 {
 310                         switch (choice)
 311                         {
 312                                 case '0':
 313                                 {
 314                                         screen_load();
 315                                         return 0;
 316                                 }
 317
 318                                 case '8':
 319                                 case 'k':
 320                                 case 'K':
 321                                 {
 322                                         do
 323                                         {
 324                                                 menu_line += EATER_EXT - 1;
 325                                                 if (menu_line > EATER_EXT) menu_line -= EATER_EXT;
 326                                         } while(!p_ptr->magic_num2[menu_line+ext-1]);
 327                                         break;
 328                                 }
 329
 330                                 case '2':
 331                                 case 'j':
 332                                 case 'J':
 333                                 {
 334                                         do
 335                                         {
 336                                                 menu_line++;
 337                                                 if (menu_line > EATER_EXT) menu_line -= EATER_EXT;
 338                                         } while(!p_ptr->magic_num2[menu_line+ext-1]);
 339                                         break;
 340                                 }
 341
 342                                 case '4':
 343                                 case 'h':
 344                                 case 'H':
 345                                 case '6':
 346                                 case 'l':
 347                                 case 'L':
 348                                 {
 349                                         bool reverse = FALSE;
 350                                         if ((choice == '4') || (choice == 'h') || (choice == 'H')) reverse = TRUE;
 351                                         if (menu_line > EATER_EXT/2)
 352                                         {
 353                                                 menu_line -= EATER_EXT/2;
 354                                                 reverse = TRUE;
 355                                         }
 356                                         else menu_line+=EATER_EXT/2;
 357                                         while(!p_ptr->magic_num2[menu_line+ext-1])
 358                                         {
 359                                                 if (reverse)
 360                                                 {
 361                                                         menu_line--;
 362                                                         if (menu_line < 2) reverse = FALSE;
 363                                                 }
 364                                                 else
 365                                                 {
 366                                                         menu_line++;
 367                                                         if (menu_line > EATER_EXT-1) reverse = TRUE;
 368                                                 }
 369                                         }
 370                                         break;
 371                                 }
 372
 373                                 case 'x':
 374                                 case 'X':
 375                                 case '\r':
 376                                 {
 377                                         i = menu_line - 1;
 378                                         ask = FALSE;
 379                                         break;
 380                                 }
 381                         }
 382                 }
 383
 384                 /* Request redraw */
 385                 if (use_menu && ask) continue;
 386
 387                 /* Request redraw */
 388                 if (!use_menu && ((choice == ' ') || (choice == '*') || (choice == '?')))
 389                 {
 390                         /* Hide the list */
 391                         if (request_list)
 392                         {
 393                                 /* Hide list */
 394                                 request_list = FALSE;
 395
 396                                 /* Restore the screen */
 397                                 screen_load();
 398                                 screen_save();
 399                         }
 400                         else
 401                                 request_list = TRUE;
 402
 403                         /* Redo asking */
 404                         continue;
 405                 }
 406
 407                 if (!use_menu)
 408                 {
 409                         if (isalpha(choice))
 410                         {
 411                                 /* Note verify */
 412                                 ask = (isupper(choice));
 413
 414                                 /* Lowercase */
 415                                 if (ask) choice = (char)tolower(choice);
 416
 417                                 /* Extract request */
 418                                 i = (islower(choice) ? A2I(choice) : -1);
 419                         }
 420                         else
 421                         {
 422                                 ask = FALSE; /* Can't uppercase digits */
 423
 424                                 i = choice - '0' + 26;
 425                         }
 426                 }
 427
 428                 /* Totally Illegal */
 429                 if ((i < 0) || (i > EATER_EXT) || !p_ptr->magic_num2[i+ext])
 430                 {
 431                         bell();
 432                         continue;
 433                 }
 434
 435                 if (!only_browse)
 436                 {
 437                         /* Verify it */
 438                         if (ask)
 439                         {
 440                                 char tmp_val[160];
 441
 442                                 /* Prompt */
 443                                 (void) strnfmt(tmp_val, 78, _("%sを使いますか？ ", "Use %s?"), k_name + k_info[lookup_kind(tval ,i)].name);
 444
 445                                 /* Belay that order */
 446                                 if (!get_check(tmp_val)) continue;
 447                         }
 448                         if (tval == TV_ROD)
 449                         {
 450                                 if (p_ptr->magic_num1[ext+i]  > k_info[lookup_kind(tval, i)].pval * (p_ptr->magic_num2[ext+i] - 1) * EATER_ROD_CHARGE)
 451                                 {
 452                                         msg_print(_("その魔法はまだ充填している最中だ。", "The magic are still charging."));
 453                                         msg_print(NULL);
 454                                         if (use_menu) ask = TRUE;
 455                                         continue;
 456                                 }
 457                         }
 458                         else
 459                         {
 460                                 if (p_ptr->magic_num1[ext+i] < EATER_CHARGE)
 461                                 {
 462                                         msg_print(_("その魔法は使用回数が切れている。", "The magic has no charges left."));
 463                                         msg_print(NULL);
 464                                         if (use_menu) ask = TRUE;
 465                                         continue;
 466                                 }
 467                         }
 468                 }
 469
 470                 /* Browse */
 471                 else
 472                 {
 473                         int line, j;
 474                         char temp[70 * 20];
 475
 476                         /* Clear lines, position cursor  (really should use strlen here) */
 477                         Term_erase(7, 23, 255);
 478                         Term_erase(7, 22, 255);
 479                         Term_erase(7, 21, 255);
 480                         Term_erase(7, 20, 255);
 481
 482                         roff_to_buf(k_text + k_info[lookup_kind(tval, i)].text, 62, temp, sizeof(temp));
 483                         for (j = 0, line = 21; temp[j]; j += 1 + strlen(&temp[j]))
 484                         {
 485                                 prt(&temp[j], line, 10);
 486                                 line++;
 487                         }
 488
 489                         continue;
 490                 }
 491
 492                 /* Stop the loop */
 493                 flag = TRUE;
 494         }
 495
 496         /* Restore the screen */
 497         screen_load();
 498
 499         if (!flag) return -1;
 500
 501 #ifdef ALLOW_REPEAT
 502         repeat_push(ext+i);
 503 #endif /* ALLOW_REPEAT */
 504         return ext+i;
 505 }
 506
 507
 508 /*!
 509  * @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 /
 510  * Use eaten rod, wand or staff
 511  * @param only_browse 閲覧するだけならばTRUE
 512  * @param powerful 強力発動中の処理ならばTRUE
 513  * @return 実際にコマンドを実行したならばTRUEを返す。
 514  */
 515 bool do_cmd_magic_eater(bool only_browse, bool powerful)
 516 {
 517         OBJECT_SUBTYPE_VALUE item;
 518         PERCENTAGE chance;
 519         DEPTH level;
 520         IDX k_idx;
 521         OBJECT_TYPE_VALUE tval;
 522         OBJECT_SUBTYPE_VALUE sval;
 523         bool use_charge = TRUE;
 524
 525         /* Not when confused */
 526         if (!only_browse && p_ptr->confused)
 527         {
 528                 msg_print(_("混乱していて唱えられない！", "You are too confused!"));
 529                 return FALSE;
 530         }
 531
 532         item = select_magic_eater(only_browse);
 533         if (item == -1)
 534         {
 535                 p_ptr->energy_use = 0;
 536                 return FALSE;
 537         }
 538         if (item >= EATER_EXT*2) {tval = TV_ROD;sval = item - EATER_EXT*2;}
 539         else if (item >= EATER_EXT) {tval = TV_WAND;sval = item - EATER_EXT;}
 540         else {tval = TV_STAFF; sval = item;}
 541         k_idx = lookup_kind(tval, sval);
 542
 543         level = (tval == TV_ROD ? k_info[k_idx].level * 5 / 6 - 5 : k_info[k_idx].level);
 544         chance = level * 4 / 5 + 20;
 545         chance -= 3 * (adj_mag_stat[p_ptr->stat_ind[mp_ptr->spell_stat]] - 1);
 546         level /= 2;
 547         if (p_ptr->lev > level)
 548         {
 549                 chance -= 3 * (p_ptr->lev - level);
 550         }
 551         chance = mod_spell_chance_1(chance);
 552         chance = MAX(chance, adj_mag_fail[p_ptr->stat_ind[mp_ptr->spell_stat]]);
 553         /* Stunning makes spells harder */
 554         if (p_ptr->stun > 50) chance += 25;
 555         else if (p_ptr->stun) chance += 15;
 556
 557         if (chance > 95) chance = 95;
 558
 559         chance = mod_spell_chance_2(chance);
 560
 561         if (randint0(100) < chance)
 562         {
 563                 if (flush_failure) flush();
 564
 565                 msg_print(_("呪文をうまく唱えられなかった！", "You failed to get the magic off!"));
 566                 sound(SOUND_FAIL);
 567                 if (randint1(100) >= chance)
 568                         chg_virtue(V_CHANCE,-1);
 569                 p_ptr->energy_use = 100;
 570
 571                 return TRUE;
 572         }
 573         else
 574         {
 575                 int dir = 0;
 576
 577                 if (tval == TV_ROD)
 578                 {
 579                         if ((sval >= SV_ROD_MIN_DIRECTION) && (sval != SV_ROD_HAVOC) && (sval != SV_ROD_AGGRAVATE) && (sval != SV_ROD_PESTICIDE))
 580                                 if (!get_aim_dir(&dir)) return FALSE;
 581                         rod_effect(sval, dir, &use_charge, powerful, TRUE);
 582                         if (!use_charge) return FALSE;
 583                 }
 584                 else if (tval == TV_WAND)
 585                 {
 586                         if (!get_aim_dir(&dir)) return FALSE;
 587                         wand_effect(sval, dir, powerful, TRUE);
 588                 }
 589                 else
 590                 {
 591                         staff_effect(sval, &use_charge, powerful, TRUE, TRUE);
 592                         if (!use_charge) return FALSE;
 593                 }
 594                 if (randint1(100) < chance)
 595                         chg_virtue(V_CHANCE,1);
 596         }
 597         p_ptr->energy_use = 100;
 598         if (tval == TV_ROD) p_ptr->magic_num1[item] += k_info[k_idx].pval * EATER_ROD_CHARGE;
 599         else p_ptr->magic_num1[item] -= EATER_CHARGE;
 600
 601         return TRUE;
 602 }