annotate rogue4/new_level.c @ 90:c9c6bb34734d

rogue3: update the installation instructions.
author John "Elwin" Edwards
date Sat, 24 Aug 2013 14:07:16 -0700
parents 9535a08ddc39
children 1b73a8641b37
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1 /*
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2 * new_level:
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3 * Dig and draw a new level
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4 *
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5 * @(#)new_level.c 4.19 (Berkeley) 1/12/82
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6 *
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7 * Rogue: Exploring the Dungeons of Doom
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8 * Copyright (C) 1980, 1981, 1982 Michael Toy, Ken Arnold and Glenn Wichman
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9 * All rights reserved.
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10 *
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11 * See the file LICENSE.TXT for full copyright and licensing information.
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12 */
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13
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14 #include <time.h>
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15 #include <curses.h>
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16 #include <string.h>
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17 #include "rogue.h"
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18
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19 #define TREAS_ROOM 20 /* one chance in TREAS_ROOM for a treasure room */
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20 #define MAXTREAS 10 /* maximum number of treasures in a treasure room */
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21 #define MINTREAS 2 /* minimum number of treasures in a treasure room */
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22
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23 new_level()
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24 {
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25 register int rm, i;
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26 register THING *tp;
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27 register char *sp;
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28 register THING **mp;
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29 register int index;
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30 coord stairs;
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31
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32 player.t_flags &= ~ISHELD; /* unhold when you go down just in case */
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33 if (level > max_level)
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34 max_level = level;
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35 /*
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36 * Clean things off from last level
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37 */
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38 clear();
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39 for (sp = _level; sp < &_level[MAXCOLS*MAXLINES]; )
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40 *sp++ = ' ';
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41 for (sp = _flags; sp < &_flags[MAXCOLS*MAXLINES]; )
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42 *sp++ = F_REAL;
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43 for (mp = _monst; mp < &_monst[MAXCOLS*MAXLINES]; )
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44 *mp++ = NULL;
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45 clear();
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46 /*
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47 * Free up the monsters on the last level
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48 */
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49 for (tp = mlist; tp != NULL; tp = next(tp))
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50 free_list(tp->t_pack);
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51 free_list(mlist);
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52 /*
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53 * Throw away stuff left on the previous level (if anything)
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54 */
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55 free_list(lvl_obj);
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56 do_rooms(); /* Draw rooms */
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57 do_passages(); /* Draw passages */
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58 no_food++;
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59 put_things(); /* Place objects (if any) */
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60 /*
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61 * Place the staircase down.
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62 */
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63 i = 0;
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64 do {
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65 rm = rnd_room();
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66 rnd_pos(&rooms[rm], &stairs);
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67 index = INDEX(stairs.y, stairs.x);
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68 if (i++ > 100)
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69 {
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70 i = 0;
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71 srand(getpid() + (int) time((time_t *) NULL));
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72 }
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73 } until (_level[index] == FLOOR);
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74 _level[index] = STAIRS;
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75 /*
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76 * Place the traps
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77 */
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78 if (rnd(10) < level)
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79 {
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80 ntraps = rnd(level / 4) + 1;
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81 if (ntraps > MAXTRAPS)
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82 ntraps = MAXTRAPS;
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83 i = ntraps;
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84 while (i--)
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85 {
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86 do
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87 {
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88 rm = rnd_room();
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89 rnd_pos(&rooms[rm], &stairs);
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90 index = INDEX(stairs.y, stairs.x);
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91 } until (_level[index] == FLOOR && (_flags[index] & F_REAL));
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92 sp = &_flags[index];
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93 *sp &= ~(F_REAL | F_TMASK);
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94 *sp |= rnd(NTRAPS);
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95 }
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96 }
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97 do
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98 {
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99 rm = rnd_room();
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100 rnd_pos(&rooms[rm], &hero);
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101 index = INDEX(hero.y, hero.x);
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102 } until (_level[index] == FLOOR && (_flags[index] & F_REAL)
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103 && _monst[index] == NULL);
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104 enter_room(&hero);