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annotate urogue/passages.c @ 295:1e1c81fbb533

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Rogue V5: fix elemental wands. Bolts often failed to hit, due to some struct members not being initialized. Reported by 'LazyCat' from RogueTemple.
author John "Elwin" Edwards
date Fri, 12 Jan 2018 18:02:39 -0500
parents c495a4f288c6
children
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1 /*
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2 passages.c - Draw the connecting passages
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3
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4 UltraRogue: The Ultimate Adventure in the Dungeons of Doom
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5 Copyright (C) 1985, 1986, 1992, 1993, 1995 Herb Chong
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6 All rights reserved.
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7
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8 Based on "Advanced Rogue"
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9 Copyright (C) 1984, 1985 Michael Morgan, Ken Dalka
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10 All rights reserved.
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11
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12 Based on "Rogue: Exploring the Dungeons of Doom"
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13 Copyright (C) 1980, 1981 Michael Toy, Ken Arnold and Glenn Wichman
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14 All rights reserved.
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15
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16 See the file LICENSE.TXT for full copyright and licensing information.
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17 */
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18
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19 #include <stdlib.h>
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20 #include "rogue.h"
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21
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22 #define cmov(xy) move((xy).y, (xy).x)
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23
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24 /*
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25 do_passages()
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26 Draw all the passages on a level.
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27 */
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28
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29 void
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30 do_passages(void)
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31 {
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32 struct rdes *r1, *r2 = NULL;
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33 int i, j;
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34 int roomcount;
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35
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36 static struct rdes rdes[MAXROOMS] =
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37 {
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38 {{ 0, 1, 0, 1, 0, 0, 0, 0, 0},
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39 { 0, 0, 0, 0, 0, 0, 0, 0, 0}, 0},
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40 {{ 1, 0, 1, 0, 1, 0, 0, 0, 0},
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41 { 0, 0, 0, 0, 0, 0, 0, 0, 0}, 0},
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42 {{ 0, 1, 0, 0, 0, 1, 0, 0, 0},
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43 { 0, 0, 0, 0, 0, 0, 0, 0, 0}, 0},
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44 {{ 1, 0, 0, 0, 1, 0, 1, 0, 0},
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45 { 0, 0, 0, 0, 0, 0, 0, 0, 0}, 0},
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46 {{ 0, 1, 0, 1, 0, 1, 0, 1, 0},
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47 { 0, 0, 0, 0, 0, 0, 0, 0, 0}, 0},
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48 {{ 0, 0, 1, 0, 1, 0, 0, 0, 1},
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49 { 0, 0, 0, 0, 0, 0, 0, 0, 0}, 0},
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50 {{ 0, 0, 0, 1, 0, 0, 0, 1, 0},
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51 { 0, 0, 0, 0, 0, 0, 0, 0, 0}, 0},
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52 {{ 0, 0, 0, 0, 1, 0, 1, 0, 1},
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53 { 0, 0, 0, 0, 0, 0, 0, 0, 0}, 0},
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54 {{ 0, 0, 0, 0, 0, 1, 0, 1, 0},
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55 { 0, 0, 0, 0, 0, 0, 0, 0, 0}, 0}
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56 };
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57
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58 /* reinitialize room graph description */
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59
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60 for (r1 = rdes; r1 < &rdes[MAXROOMS]; r1++)
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61 {
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62 for (j = 0; j < MAXROOMS; j++)
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63 r1->isconn[j] = FALSE;
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64
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65 r1->ingraph = FALSE;
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66 }
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67
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68 /*
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69 * starting with one room, connect it to a random adjacent room and
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70 * then pick a new room to start with.
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71 */
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72
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73 roomcount = 1;
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74 r1 = &rdes[rnd(MAXROOMS)];
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75 r1->ingraph = TRUE;
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76
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77 do
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78 {
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79 j = 0;
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80
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81 for (i = 0; i < MAXROOMS; i++)
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82 if (r1->conn[i] && !rdes[i].ingraph && rnd(++j) == 0)
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83 r2 = &rdes[i];
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84
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85 /*
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86 * if no adjacent rooms are outside the graph, pick a new
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87 * room to look from
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88 */
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89
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90 if (j == 0)
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91 do
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92 {
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93