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annotate arogue5/passages.c @ 168:82b2a046d151

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arogue7: fix inventory display bug again. Removing the call to msg() in restore() resulted in msgw remaining as it was when the game was saved. This results in another display glitch like that fixed by r163. Adding an empty message puts msgw into a reliable state.
author John "Elwin" Edwards
date Tue, 30 Jun 2015 12:00:02 -0400
parents 0ed67132cf10
children 56e748983fa8
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63
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1 /*
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2 * Draw the connecting passages
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3 *
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4 * @(#)passages.c 3.4 (Berkeley) 6/15/81
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5 *
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6 * Advanced Rogue
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7 * Copyright (C) 1984, 1985 Michael Morgan, Ken Dalka and AT&T
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8 * All rights reserved.
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9 *
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10 * Based on "Rogue: Exploring the Dungeons of Doom"
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11 * Copyright (C) 1980, 1981 Michael Toy, Ken Arnold and Glenn Wichman
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12 * All rights reserved.
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13 *
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14 * See the file LICENSE.TXT for full copyright and licensing information.
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15 */
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16
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17 #include "curses.h"
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18 #include "rogue.h"
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19
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20 /*
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21 * do_passages:
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22 * Draw all the passages on a level.
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23 */
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24
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25 do_passages()
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26 {
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27 register struct rdes *r1, *r2 = NULL;
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28 register int i, j;
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29 register int roomcount;
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30 static struct rdes
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31 {
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32 bool conn[MAXROOMS]; /* possible to connect to room i? */
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33 bool isconn[MAXROOMS]; /* connection been made to room i? */
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34 bool ingraph; /* this room in graph already? */
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35 } rdes[MAXROOMS] = {
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36 { { 0, 1, 0, 1, 0, 0, 0, 0, 0 }, { 0, 0, 0, 0, 0, 0, 0, 0, 0 }, 0 },
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37 { { 1, 0, 1, 0, 1, 0, 0, 0, 0 }, { 0, 0, 0, 0, 0, 0, 0, 0, 0 }, 0 },
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38 { { 0, 1, 0, 0, 0, 1, 0, 0, 0 }, { 0, 0, 0, 0, 0, 0, 0, 0, 0 }, 0 },
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39 { { 1, 0, 0, 0, 1, 0, 1, 0, 0 }, { 0, 0, 0, 0, 0, 0, 0, 0, 0 }, 0 },
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40 { { 0, 1, 0, 1, 0, 1, 0, 1, 0 }, { 0, 0, 0, 0, 0, 0, 0, 0, 0 }, 0 },
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41 { { 0, 0, 1, 0, 1, 0, 0, 0, 1 }, { 0, 0, 0, 0, 0, 0, 0, 0, 0 }, 0 },
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42 { { 0, 0, 0, 1, 0, 0, 0, 1, 0 }, { 0, 0, 0, 0, 0, 0, 0, 0, 0 }, 0 },
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43 { { 0, 0, 0, 0, 1, 0, 1, 0, 1 }, { 0, 0, 0, 0, 0, 0, 0, 0, 0 }, 0 },
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44 { { 0, 0, 0, 0, 0, 1, 0, 1, 0 }, { 0, 0, 0, 0, 0, 0, 0, 0, 0 }, 0 },
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45 };
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46
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47 /*
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48 * reinitialize room graph description
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49 */
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50 for (r1 = rdes; r1 <= &rdes[MAXROOMS-1]; r1++)
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51 {
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52 for (j = 0; j < MAXROOMS; j++)
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53 r1->isconn[j] = FALSE;
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54 r1->ingraph = FALSE;
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55 }
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56
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57 /*
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58 * starting with one room, connect it to a random adjacent room and
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59 * then pick a new room to start with.
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60 */
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61 roomcount = 1;
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62 r1 = &rdes[rnd(MAXROOMS)];
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63 r1->ingraph = TRUE;
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64 do
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65 {
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66 /*
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67 * find a room to connect with
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68 */
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69 j = 0;
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70 for (i = 0; i < MAXROOMS; i++)
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71 if (r1->conn[i] && !rdes[i].ingraph && rnd(++j) == 0)
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72 r2 = &rdes[i];
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73 /*
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74 * if no adjacent rooms are outside the graph, pick a new room
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75 * to look from
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76 */
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77 if (j == 0)
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78 {
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79 do
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80 r1 = &rdes[rnd(MAXROOMS)];
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81 until (r1->ingraph);
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82 }
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83 /*
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84 * otherwise, connect new room to the graph, and draw a tunnel
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85 * to it
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86 */
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87 else
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88 {
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89 r2->ingraph = TRUE;
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90 i = (int)(r1 - rdes);
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91 j = (int)(r2 - rdes);
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92 conn(i, j);
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93 r1->isconn[j] = TRUE;
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94 r2->isconn[i] = TRUE;
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95 roomcount++;
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96 }
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97 } while (roomcount < MAXROOMS);
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98
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99 /*
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100 * attempt to add passages to the graph a random number of times so
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101 * that there isn't just one unique passage through it.
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102 */
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103 for (roomcount = rnd(5); roomcount > 0; roomcount--)
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