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annotate arogue7/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 f9ef86cf22b2
children e52a8a7ad4c5
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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 * Advanced Rogue
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5 * Copyright (C) 1984, 1985, 1986 Michael Morgan, Ken Dalka and AT&T
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6 * All rights reserved.
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7 *
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8 * Based on "Rogue: Exploring the Dungeons of Doom"
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9 * Copyright (C) 1980, 1981 Michael Toy, Ken Arnold and Glenn Wichman
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10 * All rights reserved.
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11 *
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12 * See the file LICENSE.TXT for full copyright and licensing information.
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13 */
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14
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15 /*
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16 * Draw the connecting passages
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17 *
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18 * @(#)passages.c 3.4 (Berkeley) 6/15/81
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19 */
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20
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21 #include <stdlib.h>
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22 #include "curses.h"
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23 #include "rogue.h"
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24
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25 void conn(int r1, int r2);
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26 void door(struct room *rm, coord *cp);
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27
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28 /*
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29 * do_passages:
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30 * Draw all the passages on a level.
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31 */
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32
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33 void
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34 do_passages(void)
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35 {
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1cd604c827a3 Advanced Rogue 7: initialize multiple variables.
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36 register struct rdes *r1, *r2 = NULL;
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37 register int i, j;
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38 register int roomcount;
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39 static struct rdes
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40 {
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41 bool conn[MAXROOMS]; /* possible to connect to room i? */
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42 bool isconn[MAXROOMS]; /* connection been made to room i? */
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43 bool ingraph; /* this room in graph already? */
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44 } rdes[MAXROOMS] = {
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45 { { 0, 1, 0, 1, 0, 0, 0, 0, 0 }, { 0, 0, 0, 0, 0, 0, 0, 0, 0 }, 0 },
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46 { { 1, 0, 1, 0, 1, 0, 0, 0, 0 }, { 0, 0, 0, 0, 0, 0, 0, 0, 0 }, 0 },
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47 { { 0, 1, 0, 0, 0, 1, 0, 0, 0 }, { 0, 0, 0, 0, 0, 0, 0, 0, 0 }, 0 },
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48 { { 1, 0, 0, 0, 1, 0, 1, 0, 0 }, { 0, 0, 0, 0, 0, 0, 0, 0, 0 }, 0 },
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49 { { 0, 1, 0, 1, 0, 1, 0, 1, 0 }, { 0, 0, 0, 0, 0, 0, 0, 0, 0 }, 0 },
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50 { { 0, 0, 1, 0, 1, 0, 0, 0, 1 }, { 0, 0, 0, 0, 0, 0, 0, 0, 0 }, 0 },
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51 { { 0, 0, 0, 1, 0, 0, 0, 1, 0 }, { 0, 0, 0, 0, 0, 0, 0, 0, 0 }, 0 },
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52 { { 0, 0, 0, 0, 1, 0, 1, 0, 1 }, { 0, 0, 0, 0, 0, 0, 0, 0, 0 }, 0 },
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53 { { 0, 0, 0, 0, 0, 1, 0, 1, 0 }, { 0, 0, 0, 0, 0, 0, 0, 0, 0 }, 0 },
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54 };
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55
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56 /*
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57 * reinitialize room graph description
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58 */
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59 for (r1 = rdes; r1 <= &rdes[MAXROOMS-1]; r1++)
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60 {
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61 for (j = 0; j < MAXROOMS; j++)
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62 r1->isconn[j] = FALSE;
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63 r1->ingraph = FALSE;
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64 }
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65
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66 /*
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67 * starting with one room, connect it to a random adjacent room and
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68 * then pick a new room to start with.
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69 */
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70 roomcount = 1;
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71 r1 = &rdes[rnd(MAXROOMS)];
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72 r1->ingraph = TRUE;
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73 do
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74 {
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75 /*
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76 * find a room to connect with
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77 */
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78 j = 0;
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79 for (i = 0; i < MAXROOMS; i++)
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80 if (r1->conn[i] && !rdes[i].ingraph && rnd(++j) == 0)
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81 r2 = &rdes[i];
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82 /*
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83 * if no adjacent rooms are outside the graph, pick a new room
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84 * to look from
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85 */
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86 if (j == 0)
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87 {
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88 do
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89 r1 = &rdes[rnd(MAXROOMS)];
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