+++ /dev/null
-/*!
- * @file streams.c
- * @brief ダンジョン生成に利用する関数群 / Used by dungeon generation.
- * @date 2014/07/15
- * @author
- * <pre>
- * Copyright (c) 1997 Ben Harrison, James E. Wilson, Robert A. Koeneke
- * This software may be copied and distributed for educational, research,
- * and not for profit purposes provided that this copyright and statement
- * are included in all such copies. Other copyrights may also apply.
- * </pre>
- * @details
- * Purpose: This file holds all the
- * functions that are applied to a level after the rest has been
- * generated, ie streams and level destruction.
- */
-
-#include "angband.h"
-#include "generate.h"
-#include "floor-streams.h"
-#include "grid.h"
-#include "monster.h"
-#include "feature.h"
-
-
-/*!
- * @brief 再帰フラクタルアルゴリズムによりダンジョン内に川を配置する /
- * Recursive fractal algorithm to place water through the dungeon.
- * @param x1 起点x座標
- * @param y1 起点y座標
- * @param x2 終点x座標
- * @param y2 終点y座標
- * @param feat1 中央部地形ID
- * @param feat2 境界部地形ID
- * @param width 基本幅
- * @return なし
- */
-static void recursive_river(POSITION x1, POSITION y1, POSITION x2, POSITION y2, FEAT_IDX feat1, FEAT_IDX feat2, POSITION width)
-{
- POSITION dx, dy, length, l, x, y;
- POSITION changex, changey;
- POSITION ty, tx;
- bool done;
- grid_type *g_ptr;
-
- length = distance(x1, y1, x2, y2);
-
- if (length > 4)
- {
- /*
- * Divide path in half and call routine twice.
- * There is a small chance of splitting the river
- */
- dx = (x2 - x1) / 2;
- dy = (y2 - y1) / 2;
-
- if (dy != 0)
- {
- /* perturbation perpendicular to path */
- changex = randint1(abs(dy)) * 2 - abs(dy);
- }
- else
- {
- changex = 0;
- }
-
- if (dx != 0)
- {
- /* perturbation perpendicular to path */
- changey = randint1(abs(dx)) * 2 - abs(dx);
- }
- else
- {
- changey = 0;
- }
-
- if (!in_bounds(y1 + dy + changey, x1 + dx + changex))
- {
- changex = 0;
- changey = 0;
- }
-
- /* construct river out of two smaller ones */
- recursive_river(x1, y1, x1 + dx + changex, y1 + dy + changey, feat1, feat2, width);
- recursive_river(x1 + dx + changex, y1 + dy + changey, x2, y2, feat1, feat2, width);
-
- /* Split the river some of the time - junctions look cool */
- if (one_in_(DUN_WAT_CHG) && (width > 0))
- {
- recursive_river(x1 + dx + changex, y1 + dy + changey,
- x1 + 8 * (dx + changex), y1 + 8 * (dy + changey),
- feat1, feat2, width - 1);
- }
- }
- else
- {
- /* Actually build the river */
- for (l = 0; l < length; l++)
- {
- x = x1 + l * (x2 - x1) / length;
- y = y1 + l * (y2 - y1) / length;
-
- done = FALSE;
-
- while (!done)
- {
- for (ty = y - width - 1; ty <= y + width + 1; ty++)
- {
- for (tx = x - width - 1; tx <= x + width + 1; tx++)
- {
- if (!in_bounds2(ty, tx)) continue;
-
- g_ptr = ¤t_floor_ptr->grid_array[ty][tx];
-
- if (g_ptr->feat == feat1) continue;
- if (g_ptr->feat == feat2) continue;
-
- if (distance(ty, tx, y, x) > rand_spread(width, 1)) continue;
-
- /* Do not convert permanent features */
- if (cave_perma_grid(g_ptr)) continue;
-
- /*
- * Clear previous contents, add feature
- * The border mainly gets feat2, while the center gets feat1
- */
- if (distance(ty, tx, y, x) > width)
- g_ptr->feat = feat2;
- else
- g_ptr->feat = feat1;
-
- /* Clear garbage of hidden trap or door */
- g_ptr->mimic = 0;
-
- /* Lava terrain glows */
- if (have_flag(f_info[feat1].flags, FF_LAVA))
- {
- if (!(d_info[p_ptr->dungeon_idx].flags1 & DF1_DARKNESS)) g_ptr->info |= CAVE_GLOW;
- }
-
- /* Hack -- don't teleport here */
- g_ptr->info |= CAVE_ICKY;
- }
- }
-
- done = TRUE;
- }
- }
- }
-}
-
-
-/*!
- * @brief ランダムに川/溶岩流をダンジョンに配置する /
- * Places water /lava through dungeon.
- * @param feat1 中央部地形ID
- * @param feat2 境界部地形ID
- * @return なし
- */
-void add_river(IDX feat1, IDX feat2)
-{
- POSITION y2, x2;
- POSITION y1 = 0, x1 = 0;
- POSITION wid;
-
-
- /* Hack -- Choose starting point */
- y2 = randint1(current_floor_ptr->height / 2 - 2) + current_floor_ptr->height / 2;
- x2 = randint1(current_floor_ptr->width / 2 - 2) + current_floor_ptr->width / 2;
-
- /* Hack -- Choose ending point somewhere on boundary */
- switch(randint1(4))
- {
- case 1:
- {
- /* top boundary */
- x1 = randint1(current_floor_ptr->width-2)+1;
- y1 = 1;
- break;
- }
- case 2:
- {
- /* left boundary */
- x1 = 1;
- y1 = randint1(current_floor_ptr->height-2)+1;
- break;
- }
- case 3:
- {
- /* right boundary */
- x1 = current_floor_ptr->width-1;
- y1 = randint1(current_floor_ptr->height-2)+1;
- break;
- }
- case 4:
- {
- /* bottom boundary */
- x1 = randint1(current_floor_ptr->width-2)+1;
- y1 = current_floor_ptr->height-1;
- break;
- }
- }
-
- wid = randint1(DUN_WAT_RNG);
- recursive_river(x1, y1, x2, y2, feat1, feat2, wid);
-
- /* Hack - Save the location as a "room" */
- if (dun->cent_n < CENT_MAX)
- {
- dun->cent[dun->cent_n].y = y2;
- dun->cent[dun->cent_n].x = x2;
- dun->cent_n++;
- }
-}
-
-
-/*!
- * @brief ダンジョンの壁部にストリーマー（地質の変化）を与える /
- * Places "streamers" of rock through dungeon
- * @param feat ストリーマー地形ID
- * @param chance 生成密度
- * @return なし
- * @details
- * <pre>
- * Note that their are actually six different terrain features used
- * to represent streamers. Three each of magma and quartz, one for
- * basic vein, one with hidden gold, and one with known gold. The
- * hidden gold types are currently unused.
- * </pre>
- */
-void build_streamer(IDX feat, int chance)
-{
- int i, tx, ty;
- int y, x, dir;
- int dummy = 0;
-
- grid_type *g_ptr;
- feature_type *f_ptr;
-
- feature_type *streamer_ptr = &f_info[feat];
- bool streamer_is_wall = have_flag(streamer_ptr->flags, FF_WALL) && !have_flag(streamer_ptr->flags, FF_PERMANENT);
- bool streamer_may_have_gold = have_flag(streamer_ptr->flags, FF_MAY_HAVE_GOLD);
-
- /* Hack -- Choose starting point */
- y = rand_spread(current_floor_ptr->height / 2, current_floor_ptr->height / 6);
- x = rand_spread(current_floor_ptr->width / 2, current_floor_ptr->width / 6);
-
- /* Choose a random compass direction */
- dir = randint0(8);
-
- /* Place streamer into dungeon */
- while (dummy < SAFE_MAX_ATTEMPTS)
- {
- dummy++;
-
- /* One grid per density */
- for (i = 0; i < DUN_STR_DEN; i++)
- {
- int d = DUN_STR_RNG;
-
- /* Pick a nearby grid */
- while (1)
- {
- ty = rand_spread(y, d);
- tx = rand_spread(x, d);
- if (!in_bounds2(ty, tx)) continue;
- break;
- }
- g_ptr = ¤t_floor_ptr->grid_array[ty][tx];
- f_ptr = &f_info[g_ptr->feat];
-
- if (have_flag(f_ptr->flags, FF_MOVE) && (have_flag(f_ptr->flags, FF_WATER) || have_flag(f_ptr->flags, FF_LAVA)))
- continue;
-
- /* Do not convert permanent features */
- if (have_flag(f_ptr->flags, FF_PERMANENT)) continue;
-
- /* Only convert "granite" walls */
- if (streamer_is_wall)
- {
- if (!is_extra_grid(g_ptr) && !is_inner_grid(g_ptr) && !is_outer_grid(g_ptr) && !is_solid_grid(g_ptr)) continue;
- if (is_closed_door(g_ptr->feat)) continue;
- }
-
- if (g_ptr->m_idx && !(have_flag(streamer_ptr->flags, FF_PLACE) && monster_can_cross_terrain(feat, &r_info[current_floor_ptr->m_list[g_ptr->m_idx].r_idx], 0)))
- {
- /* Delete the monster (if any) */
- delete_monster(ty, tx);
- }
-
- if (g_ptr->o_idx && !have_flag(streamer_ptr->flags, FF_DROP))
- {
- OBJECT_IDX this_o_idx, next_o_idx = 0;
-
- /* Scan all objects in the grid */
- for (this_o_idx = g_ptr->o_idx; this_o_idx; this_o_idx = next_o_idx)
- {
- object_type *o_ptr = ¤t_floor_ptr->o_list[this_o_idx];
- next_o_idx = o_ptr->next_o_idx;
-
- /* Hack -- Preserve unknown artifacts */
- if (object_is_fixed_artifact(o_ptr))
- {
- /* Mega-Hack -- Preserve the artifact */
- a_info[o_ptr->name1].cur_num = 0;
-
- if (cheat_peek)
- {
- GAME_TEXT o_name[MAX_NLEN];
- object_desc(o_name, o_ptr, (OD_NAME_ONLY | OD_STORE));
- msg_format(_("伝説のアイテム (%s) はストリーマーにより削除された。",
- "Artifact (%s) was deleted by streamer."), o_name);
- }
- }
- else if (cheat_peek && o_ptr->art_name)
- {
- msg_print(_("ランダム・アーティファクトの1つはストリーマーにより削除された。",
- "One of the random artifacts was deleted by streamer."));
- }
- }
-
- delete_object(ty, tx);
- }
-
- /* Clear previous contents, add proper vein type */
- g_ptr->feat = feat;
-
- /* Paranoia: Clear mimic field */
- g_ptr->mimic = 0;
-
- if (streamer_may_have_gold)
- {
- /* Hack -- Add some known treasure */
- if (one_in_(chance))
- {
- cave_alter_feat(ty, tx, FF_MAY_HAVE_GOLD);
- }
-
- /* Hack -- Add some hidden treasure */
- else if (one_in_(chance / 4))
- {
- cave_alter_feat(ty, tx, FF_MAY_HAVE_GOLD);
- cave_alter_feat(ty, tx, FF_ENSECRET);
- }
- }
- }
-
- if (dummy >= SAFE_MAX_ATTEMPTS)
- {
- msg_print_wizard(CHEAT_DUNGEON, _("地形のストリーマー処理に失敗しました。", "Failed to place streamer."));
- return;
- }
-
- /* Advance the streamer */
- y += ddy[cdd[dir]];
- x += ddx[cdd[dir]];
-
- if(one_in_(10))
- {
- if(one_in_(2)) dir = (dir + 1) % 8;
- else dir = (dir > 0) ? dir - 1 : 7;
- }
-
- /* Quit before leaving the dungeon */
- if (!in_bounds(y, x)) break;
- }
-}
-
-
-/*!
- * @brief ダンジョンの指定位置近辺に森林を配置する /
- * Places "streamers" of rock through dungeon
- * @param x 指定X座標
- * @param y 指定Y座標
- * @return なし
- * @details
- * <pre>
- * Put trees near a hole in the dungeon roof (rubble on ground + up stairway)
- * This happens in real world lava tubes.
- * </pre>
- */
-void place_trees(POSITION x, POSITION y)
-{
- int i, j;
- grid_type *g_ptr;
-
- /* place trees/ rubble in ovalish distribution */
- for (i = x - 3; i < x + 4; i++)
- {
- for (j = y - 3; j < y + 4; j++)
- {
- if (!in_bounds(j, i)) continue;
- g_ptr = ¤t_floor_ptr->grid_array[j][i];
-
- if (g_ptr->info & CAVE_ICKY) continue;
- if (g_ptr->o_idx) continue;
-
- /* Want square to be in the circle and accessable. */
- if ((distance(j, i, y, x) < 4) && !cave_perma_grid(g_ptr))
- {
- /*
- * Clear previous contents, add feature
- * The border mainly gets trees, while the center gets rubble
- */
- if ((distance(j, i, y, x) > 1) || (randint1(100) < 25))
- {
- if (randint1(100) < 75)
- current_floor_ptr->grid_array[j][i].feat = feat_tree;
- }
- else
- {
- current_floor_ptr->grid_array[j][i].feat = feat_rubble;
- }
-
- /* Clear garbage of hidden trap or door */
- g_ptr->mimic = 0;
-
- /* Light area since is open above */
- if (!(d_info[p_ptr->dungeon_idx].flags1 & DF1_DARKNESS)) current_floor_ptr->grid_array[j][i].info |= (CAVE_GLOW | CAVE_ROOM);
- }
- }
- }
-
- /* No up stairs in ironman mode */
- if (!ironman_downward && one_in_(3))
- {
- /* up stair */
- current_floor_ptr->grid_array[y][x].feat = feat_up_stair;
- }
-}
-
-
-/*!
- * @brief ダンジョンに＊破壊＊済み地形ランダムに施す /
- * Build a destroyed level
- * @return なし
- */
-void destroy_level(void)
-{
- POSITION y1, x1;
- int n;
-
- /* Note destroyed levels */
- msg_print_wizard(CHEAT_DUNGEON, _("階に*破壊*の痕跡を生成しました。", "Destroyed Level."));
-
- /* Drop a few epi-centers (usually about two) */
- for (n = 0; n < randint1(5); n++)
- {
- /* Pick an epi-center */
- x1 = rand_range(5, current_floor_ptr->width - 1 - 5);
- y1 = rand_range(5, current_floor_ptr->height - 1 - 5);
-
- (void)destroy_area(y1, x1, 15, TRUE);
- }
-}
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