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