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
  58 #include "cmd-basic.h"
  59 #include "cmd-usestaff.h"
  60 #include "cmd-zaprod.h"
  61 #include "cmd-zapwand.h"
  62 #include "avatar.h"
  63 #include "player-status.h"
  64 #include "spells.h"
  65 #include "player-class.h"
  66 #include "objectkind.h"
  67 #include "targeting.h"
  68
  69 /*!
  70  * @brief 魔道具術師の取り込んだ魔力一覧から選択/閲覧する /
  71  * @param only_browse 閲覧するだけならばTRUE
  72  * @return 選択した魔力のID、キャンセルならば-1を返す
  73  */
  74 static OBJECT_SUBTYPE_VALUE select_magic_eater(bool only_browse)
  75 {
  76         OBJECT_SUBTYPE_VALUE ext = 0;
  77         char choice;
  78         bool flag, request_list;
  79         OBJECT_TYPE_VALUE tval = 0;
  80         int             ask = TRUE;
  81         OBJECT_SUBTYPE_VALUE i = 0;
  82         char            out_val[160];
  83
  84         int menu_line = (use_menu ? 1 : 0);
  85
  86         COMMAND_CODE sn;
  87         if (repeat_pull(&sn))
  88         {
  89                 /* Verify the spell */
  90                 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))
  91                         return sn;
  92                 else if (sn < EATER_EXT*2 && !(p_ptr->magic_num1[sn] < EATER_CHARGE))
  93                         return sn;
  94         }
  95
  96         for (i = 0; i < 108; i++)
  97         {
  98                 if (p_ptr->magic_num2[i]) break;
  99         }
 100         if (i == 108)
 101         {
 102                 msg_print(_("魔法を覚えていない！", "You don't have any magic!"));
 103                 return -1;
 104         }
 105
 106         if (use_menu)
 107         {
 108                 screen_save();
 109
 110                 while(!tval)
 111                 {
 112 #ifdef JP
 113                         prt(format(" %s 杖", (menu_line == 1) ? "》" : "  "), 2, 14);
 114                         prt(format(" %s 魔法棒", (menu_line == 2) ? "》" : "  "), 3, 14);
 115                         prt(format(" %s ロッド", (menu_line == 3) ? "》" : "  "), 4, 14);
 116 #else
 117                         prt(format(" %s staff", (menu_line == 1) ? "> " : "  "), 2, 14);
 118                         prt(format(" %s wand", (menu_line == 2) ? "> " : "  "), 3, 14);
 119                         prt(format(" %s rod", (menu_line == 3) ? "> " : "  "), 4, 14);
 120 #endif
 121
 122                         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);
 123                         else prt(_("どの種類の魔法を使いますか？", "Which type of magic do you use?"), 0, 0);
 124
 125                         choice = inkey();
 126                         switch(choice)
 127                         {
 128                         case ESCAPE:
 129                         case 'z':
 130                         case 'Z':
 131                                 screen_load();
 132                                 return -1;
 133                         case '2':
 134                         case 'j':
 135                         case 'J':
 136                                 menu_line++;
 137                                 break;
 138                         case '8':
 139                         case 'k':
 140                         case 'K':
 141                                 menu_line+= 2;
 142                                 break;
 143                         case '\r':
 144                         case 'x':
 145                         case 'X':
 146                                 ext = (menu_line-1)*EATER_EXT;
 147                                 if (menu_line == 1) tval = TV_STAFF;
 148                                 else if (menu_line == 2) tval = TV_WAND;
 149                                 else tval = TV_ROD;
 150                                 break;
 151                         }
 152                         if (menu_line > 3) menu_line -= 3;
 153                 }
 154                 screen_load();
 155         }
 156         else
 157         {
 158         while (TRUE)
 159         {
 160                 if (!get_com(_("[A] 杖, [B] 魔法棒, [C] ロッド:", "[A] staff, [B] wand, [C] rod:"), &choice, TRUE))
 161                 {
 162                         return -1;
 163                 }
 164                 if (choice == 'A' || choice == 'a')
 165                 {
 166                         ext = 0;
 167                         tval = TV_STAFF;
 168                         break;
 169                 }
 170                 if (choice == 'B' || choice == 'b')
 171                 {
 172                         ext = EATER_EXT;
 173                         tval = TV_WAND;
 174                         break;
 175                 }
 176                 if (choice == 'C' || choice == 'c')
 177                 {
 178                         ext = EATER_EXT*2;
 179                         tval = TV_ROD;
 180                         break;
 181                 }
 182         }
 183         }
 184         for (i = ext; i < ext + EATER_EXT; i++)
 185         {
 186                 if (p_ptr->magic_num2[i])
 187                 {
 188                         if (use_menu) menu_line = i-ext+1;
 189                         break;
 190                 }
 191         }
 192         if (i == ext+EATER_EXT)
 193         {
 194                 msg_print(_("その種類の魔法は覚えていない！", "You don't have that type of magic!"));
 195                 return -1;
 196         }
 197
 198         /* Nothing chosen yet */
 199         flag = FALSE;
 200
 201         /* Build a prompt */
 202         if (only_browse) strnfmt(out_val, 78, _("('*'で一覧, ESCで中断) どの魔力を見ますか？",
 203                                                                                         "(*=List, ESC=exit) Browse which power? "));
 204         else strnfmt(out_val, 78, _("('*'で一覧, ESCで中断) どの魔力を使いますか？",
 205                                                                 "(*=List, ESC=exit) Use which power? "));
 206         screen_save();
 207
 208         request_list = always_show_list;
 209
 210         while (!flag)
 211         {
 212                 /* Show the list */
 213                 if (request_list || use_menu)
 214                 {
 215                         byte y, x = 0;
 216                         OBJECT_SUBTYPE_VALUE ctr;
 217                         PERCENTAGE chance;
 218                         KIND_OBJECT_IDX k_idx;
 219                         char dummy[80];
 220                         POSITION x1, y1;
 221                         DEPTH level;
 222                         byte col;
 223
 224                         strcpy(dummy, "");
 225
 226                         for (y = 1; y < 20; y++)
 227                                 prt("", y, x);
 228
 229                         y = 1;
 230
 231                         /* Print header(s) */
 232 #ifdef JP
 233                         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);
 234 #else
 235                         prt(format("                           %s Fail                           %s Fail", (tval == TV_ROD ? "  Stat  " : " Charges"), (tval == TV_ROD ? "  Stat  " : " Charges")), y++, x);
 236 #endif
 237
 238                         /* Print list */
 239                         for (ctr = 0; ctr < EATER_EXT; ctr++)
 240                         {
 241                                 if (!p_ptr->magic_num2[ctr+ext]) continue;
 242
 243                                 k_idx = lookup_kind(tval, ctr);
 244
 245                                 if (use_menu)
 246                                 {
 247                                         if (ctr == (menu_line-1))
 248                                                 strcpy(dummy, _("》", "> "));
 249                                         else
 250                                                 strcpy(dummy, "  ");
 251                                 }
 252                                 /* letter/number for power selection */
 253                                 else
 254                                 {
 255                                         char letter;
 256                                         if (ctr < 26)
 257                                                 letter = I2A(ctr);
 258                                         else
 259                                                 letter = '0' + ctr - 26;
 260                                         sprintf(dummy, "%c)",letter);
 261                                 }
 262                                 x1 = ((ctr < EATER_EXT/2) ? x : x + 40);
 263                                 y1 = ((ctr < EATER_EXT/2) ? y + ctr : y + ctr - EATER_EXT/2);
 264                                 level = (tval == TV_ROD ? k_info[k_idx].level * 5 / 6 - 5 : k_info[k_idx].level);
 265                                 chance = level * 4 / 5 + 20;
 266                                 chance -= 3 * (adj_mag_stat[p_ptr->stat_ind[mp_ptr->spell_stat]] - 1);
 267                                 level /= 2;
 268                                 if (p_ptr->lev > level)
 269                                 {
 270                                         chance -= 3 * (p_ptr->lev - level);
 271                                 }
 272                                 chance = mod_spell_chance_1(chance);
 273                                 chance = MAX(chance, adj_mag_fail[p_ptr->stat_ind[mp_ptr->spell_stat]]);
 274                                 /* Stunning makes spells harder */
 275                                 if (p_ptr->stun > 50) chance += 25;
 276                                 else if (p_ptr->stun) chance += 15;
 277
 278                                 if (chance > 95) chance = 95;
 279
 280                                 chance = mod_spell_chance_2(chance);
 281
 282                                 col = TERM_WHITE;
 283
 284                                 if (k_idx)
 285                                 {
 286                                         if (tval == TV_ROD)
 287                                         {
 288                                                 strcat(dummy, format(
 289                                                                _(" %-22.22s 充填:%2d/%2d%3d%%", " %-22.22s   (%2d/%2d) %3d%%"),
 290                                                                k_name + k_info[k_idx].name,
 291                                                                p_ptr->magic_num1[ctr+ext] ?
 292                                                                (p_ptr->magic_num1[ctr+ext] - 1) / (EATER_ROD_CHARGE * k_info[k_idx].pval) +1 : 0,
 293                                                                p_ptr->magic_num2[ctr+ext], chance));
 294                                                 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;
 295                                         }
 296                                         else
 297                                         {
 298                                                 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));
 299                                                 if (p_ptr->magic_num1[ctr+ext] < EATER_CHARGE) col = TERM_RED;
 300                                         }
 301                                 }
 302                                 else
 303                                         strcpy(dummy, "");
 304                                 c_prt(col, dummy, y1, x1);
 305                         }
 306                 }
 307
 308                 if (!get_com(out_val, &choice, FALSE)) break;
 309
 310                 if (use_menu && choice != ' ')
 311                 {
 312                         switch (choice)
 313                         {
 314                                 case '0':
 315                                 {
 316                                         screen_load();
 317                                         return 0;
 318                                 }
 319
 320                                 case '8':
 321                                 case 'k':
 322                                 case 'K':
 323                                 {
 324                                         do
 325                                         {
 326                                                 menu_line += EATER_EXT - 1;
 327                                                 if (menu_line > EATER_EXT) menu_line -= EATER_EXT;
 328                                         } while(!p_ptr->magic_num2[menu_line+ext-1]);
 329                                         break;
 330                                 }
 331
 332                                 case '2':
 333                                 case 'j':
 334                                 case 'J':
 335                                 {
 336                                         do
 337                                         {
 338                                                 menu_line++;
 339                                                 if (menu_line > EATER_EXT) menu_line -= EATER_EXT;
 340                                         } while(!p_ptr->magic_num2[menu_line+ext-1]);
 341                                         break;
 342                                 }
 343
 344                                 case '4':
 345                                 case 'h':
 346                                 case 'H':
 347                                 case '6':
 348                                 case 'l':
 349                                 case 'L':
 350                                 {
 351                                         bool reverse = FALSE;
 352                                         if ((choice == '4') || (choice == 'h') || (choice == 'H')) reverse = TRUE;
 353                                         if (menu_line > EATER_EXT/2)
 354                                         {
 355                                                 menu_line -= EATER_EXT/2;
 356                                                 reverse = TRUE;
 357                                         }
 358                                         else menu_line+=EATER_EXT/2;
 359                                         while(!p_ptr->magic_num2[menu_line+ext-1])
 360                                         {
 361                                                 if (reverse)
 362                                                 {
 363                                                         menu_line--;
 364                                                         if (menu_line < 2) reverse = FALSE;
 365                                                 }
 366                                                 else
 367                                                 {
 368                                                         menu_line++;
 369                                                         if (menu_line > EATER_EXT-1) reverse = TRUE;
 370                                                 }
 371                                         }
 372                                         break;
 373                                 }
 374
 375                                 case 'x':
 376                                 case 'X':
 377                                 case '\r':
 378                                 {
 379                                         i = menu_line - 1;
 380                                         ask = FALSE;
 381                                         break;
 382                                 }
 383                         }
 384                 }
 385
 386                 /* Request redraw */
 387                 if (use_menu && ask) continue;
 388
 389                 /* Request redraw */
 390                 if (!use_menu && ((choice == ' ') || (choice == '*') || (choice == '?')))
 391                 {
 392                         /* Hide the list */
 393                         if (request_list)
 394                         {
 395                                 /* Hide list */
 396                                 request_list = FALSE;
 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         screen_load();
 496
 497         if (!flag) return -1;
 498
 499         repeat_push(ext+i);
 500         return ext+i;
 501 }
 502
 503
 504 /*!
 505  * @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 /
 506  * Use eaten rod, wand or staff
 507  * @param only_browse 閲覧するだけならばTRUE
 508  * @param powerful 強力発動中の処理ならばTRUE
 509  * @return 実際にコマンドを実行したならばTRUEを返す。
 510  */
 511 bool do_cmd_magic_eater(bool only_browse, bool powerful)
 512 {
 513         OBJECT_SUBTYPE_VALUE item;
 514         PERCENTAGE chance;
 515         DEPTH level;
 516         KIND_OBJECT_IDX k_idx;
 517         OBJECT_TYPE_VALUE tval;
 518         OBJECT_SUBTYPE_VALUE sval;
 519         bool use_charge = TRUE;
 520
 521         if (cmd_limit_confused(p_ptr)) return FALSE;
 522
 523         item = select_magic_eater(only_browse);
 524         if (item == -1)
 525         {
 526                 free_turn(p_ptr);
 527                 return FALSE;
 528         }
 529         if (item >= EATER_EXT*2) {tval = TV_ROD;sval = item - EATER_EXT*2;}
 530         else if (item >= EATER_EXT) {tval = TV_WAND;sval = item - EATER_EXT;}
 531         else {tval = TV_STAFF; sval = item;}
 532         k_idx = lookup_kind(tval, sval);
 533
 534         level = (tval == TV_ROD ? k_info[k_idx].level * 5 / 6 - 5 : k_info[k_idx].level);
 535         chance = level * 4 / 5 + 20;
 536         chance -= 3 * (adj_mag_stat[p_ptr->stat_ind[mp_ptr->spell_stat]] - 1);
 537         level /= 2;
 538         if (p_ptr->lev > level)
 539         {
 540                 chance -= 3 * (p_ptr->lev - level);
 541         }
 542         chance = mod_spell_chance_1(chance);
 543         chance = MAX(chance, adj_mag_fail[p_ptr->stat_ind[mp_ptr->spell_stat]]);
 544         /* Stunning makes spells harder */
 545         if (p_ptr->stun > 50) chance += 25;
 546         else if (p_ptr->stun) chance += 15;
 547
 548         if (chance > 95) chance = 95;
 549
 550         chance = mod_spell_chance_2(chance);
 551
 552         if (randint0(100) < chance)
 553         {
 554                 if (flush_failure) flush();
 555
 556                 msg_print(_("呪文をうまく唱えられなかった！", "You failed to get the magic off!"));
 557                 sound(SOUND_FAIL);
 558                 if (randint1(100) >= chance)
 559                         chg_virtue(V_CHANCE,-1);
 560                 take_turn(p_ptr, 100);
 561
 562                 return TRUE;
 563         }
 564         else
 565         {
 566                 DIRECTION dir = 0;
 567
 568                 if (tval == TV_ROD)
 569                 {
 570                         if ((sval >= SV_ROD_MIN_DIRECTION) && (sval != SV_ROD_HAVOC) && (sval != SV_ROD_AGGRAVATE) && (sval != SV_ROD_PESTICIDE))
 571                                 if (!get_aim_dir(&dir)) return FALSE;
 572                         rod_effect(sval, dir, &use_charge, powerful, TRUE);
 573                         if (!use_charge) return FALSE;
 574                 }
 575                 else if (tval == TV_WAND)
 576                 {
 577                         if (!get_aim_dir(&dir)) return FALSE;
 578                         wand_effect(sval, dir, powerful, TRUE);
 579                 }
 580                 else
 581                 {
 582                         staff_effect(sval, &use_charge, powerful, TRUE, TRUE);
 583                         if (!use_charge) return FALSE;
 584                 }
 585                 if (randint1(100) < chance)
 586                         chg_virtue(V_CHANCE,1);
 587         }
 588         take_turn(p_ptr, 100);
 589         if (tval == TV_ROD) p_ptr->magic_num1[item] += k_info[k_idx].pval * EATER_ROD_CHARGE;
 590         else p_ptr->magic_num1[item] -= EATER_CHARGE;
 591
 592         return TRUE;
 593 }