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