/* * Strictly check if monster can enter the grid */ bool monster_can_enter(int y, int x, monster_race *r_ptr, u16b mode) { cave_type *c_ptr = &cave[y][x]; /* Player or other monster */ if (player_bold(y, x)) return FALSE; if (c_ptr->m_idx) return FALSE; return monster_can_cross_terrain(c_ptr->feat, r_ptr, mode); }
/* * Places "streamers" of rock through dungeon * * 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. */ void build_streamer(int feat, int chance) { int i, tx, ty; int y, x, dir; int dummy = 0; cave_type *c_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(cur_hgt / 2, cur_hgt / 6); x = rand_spread(cur_wid / 2, cur_wid / 6); /* Choose a random compass direction */ dir = ddd[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; } /* Access the grid */ c_ptr = &cave[ty][tx]; f_ptr = &f_info[c_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(c_ptr) && !is_inner_grid(c_ptr) && !is_outer_grid(c_ptr) && !is_solid_grid(c_ptr)) continue; if (is_closed_door(c_ptr->feat)) continue; } if (c_ptr->m_idx && !(have_flag(streamer_ptr->flags, FF_PLACE) && monster_can_cross_terrain(feat, &r_info[m_list[c_ptr->m_idx].r_idx], 0))) { /* Delete the monster (if any) */ delete_monster(ty, tx); } if (c_ptr->o_idx && !have_flag(streamer_ptr->flags, FF_DROP)) { s16b this_o_idx, next_o_idx = 0; /* Scan all objects in the grid */ for (this_o_idx = c_ptr->o_idx; this_o_idx; this_o_idx = next_o_idx) { /* Acquire object */ object_type *o_ptr = &o_list[this_o_idx]; /* Acquire next object */ 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) { char o_name[MAX_NLEN]; object_desc(o_name, o_ptr, (OD_NAME_ONLY | OD_STORE)); msg_format("Artifact (%s) was deleted by streamer.", o_name); } } else if (o_ptr->name3) { /* Mega-Hack -- Preserve the artifact */ a_info[o_ptr->name3].cur_num = 0; if (cheat_peek) { char o_name[MAX_NLEN]; object_desc(o_name, o_ptr, (OD_NAME_ONLY | OD_STORE)); msg_format("Artifact (%s) was deleted by streamer.", o_name); } } else if (cheat_peek && o_ptr->art_name) { msg_print("One of the random artifacts was deleted by streamer."); } } /* Delete objects */ delete_object(ty, tx); } /* Clear previous contents, add proper vein type */ c_ptr->feat = feat; /* Paranoia: Clear mimic field */ c_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) { if (cheat_room) { msg_print("Warning! Could not place streamer!"); } return; } /* Advance the streamer */ y += ddy[dir]; x += ddx[dir]; /* Quit before leaving the dungeon */ if (!in_bounds(y, x)) break; } }