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