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annotate rogue4/passages.c @ 306:057c5114e244

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Super-Rogue: fix some out-of-range constants. Constants K_ARROW etc., for causes of death other than monsters, are in the 240-255 range. They were often passed to functions taking char, which is usually signed, making the values out of range. The function declarations have been changed to unsigned char, which is also the type used by the scoreboard code.
author John "Elwin" Edwards
date Sat, 17 Apr 2021 15:41:12 -0400
parents 3900f3cfe07d
children
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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 4.8 (Berkeley) 1/27/82
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5 *
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6 * Rogue: Exploring the Dungeons of Doom
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7 * Copyright (C) 1980, 1981, 1982 Michael Toy, Ken Arnold and Glenn Wichman
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8 * All rights reserved.
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9 *
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10 * See the file LICENSE.TXT for full copyright and licensing information.
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11 */
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12
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13 #include <stdlib.h>
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14 #include <curses.h>
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15 #include "rogue.h"
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16
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17 void conn(int r1, int r2);
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18 void door(struct room *rm, coord *cp);
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19 void passnum(void);
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20 void numpass(int y, int x);
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21
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22 /*
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23 * do_passages:
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24 * Draw all the passages on a level.
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25 */
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26 void
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27 do_passages(void)
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28 {
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29 register struct rdes *r1, *r2 = NULL;
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30 register int i, j;
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31 register int roomcount;
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32 static struct rdes
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33 {
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34 bool conn[MAXROOMS]; /* possible to connect to room i? */
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35 bool isconn[MAXROOMS]; /* connection been made to room i? */
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36 bool ingraph; /* this room in graph already? */
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37 } rdes[MAXROOMS] = {
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38 { { 0, 1, 0, 1, 0, 0, 0, 0, 0 }, { 0, 0, 0, 0, 0, 0, 0, 0, 0 }, 0 },
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39 { { 1, 0, 1, 0, 1, 0, 0, 0, 0 }, { 0, 0, 0, 0, 0, 0, 0, 0, 0 }, 0 },
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40 { { 0, 1, 0, 0, 0, 1, 0, 0, 0 }, { 0, 0, 0, 0, 0, 0, 0, 0, 0 }, 0 },
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41 { { 1, 0, 0, 0, 1, 0, 1, 0, 0 }, { 0, 0, 0, 0, 0, 0, 0, 0, 0 }, 0 },
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42 { { 0, 1, 0, 1, 0, 1, 0, 1, 0 }, { 0, 0, 0, 0, 0, 0, 0, 0, 0 }, 0 },
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43 { { 0, 0, 1, 0, 1, 0, 0, 0, 1 }, { 0, 0, 0, 0, 0, 0, 0, 0, 0 }, 0 },
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44 { { 0, 0, 0, 1, 0, 0, 0, 1, 0 }, { 0, 0, 0, 0, 0, 0, 0, 0, 0 }, 0 },
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45 { { 0, 0, 0, 0, 1, 0, 1, 0, 1 }, { 0, 0, 0, 0, 0, 0, 0, 0, 0 }, 0 },
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46 { { 0, 0, 0, 0, 0, 1, 0, 1, 0 }, { 0, 0, 0, 0, 0, 0, 0, 0, 0 }, 0 },
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47 };
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48
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49 /*
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50 * reinitialize room graph description
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51 */
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52 for (r1 = rdes; r1 <= &rdes[MAXROOMS-1]; r1++)
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53 {
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54 for (j = 0; j < MAXROOMS; j++)
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55 r1->isconn[j] = FALSE;
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56 r1->ingraph = FALSE;
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57 }
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58
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59 /*
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60 * starting with one room, connect it to a random adjacent room and
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61 * then pick a new room to start with.
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62 */
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63 roomcount = 1;
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64 r1 = &rdes[rnd(MAXROOMS)];
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65 r1->ingraph = TRUE;
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66 do
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67 {
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68 /*
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69 * find a room to connect with
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70 */
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71 j = 0;
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72 for (i = 0; i < MAXROOMS; i++)
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73 if (r1->conn[i] && !rdes[i].ingraph && rnd(++j) == 0)
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74 r2 = &rdes[i];
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75 /*
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76 * if no adjacent rooms are outside the graph, pick a new room
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77 * to look from
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78 */
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79 if (j == 0)
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80 {
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81 do
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82 r1 = &rdes[rnd(MAXROOMS)];
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83 until (r1->ingraph);
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84 }
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85 /*
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86 * otherwise, connect new room to the graph, and draw a tunnel
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87 * to it
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88 */
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89 else
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90 {
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91 r2->ingraph = TRUE;
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92 i = r1 - rdes;
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93 j = r2 - rdes;
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94 conn(i, j);
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95 r1->isconn[j] = TRUE;
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96 r2->isconn[i] = TRUE;
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97 roomcount++;
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98 }
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99 } while (roomcount < MAXROOMS);
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100
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101 /*
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