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annotate arogue7/passages.c @ 222:a666e4a034ed

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Fix curses library detection. A custom autoconf macro searched for the curses library, and provided an option to use ncurses instead of a (presumably deficient) curses implementation. Unfortunately, some of the Makefiles ignored the search's results. Now that this is fixed, building against pdcurses should be easier too.
author John "Elwin" Edwards
date Fri, 12 Feb 2016 15:12:37 -0500
parents 1cd604c827a3
children f9ef86cf22b2
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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 "curses.h"
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22 #include "rogue.h"
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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 do_passages()
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30 {
200
1cd604c827a3 Advanced Rogue 7: initialize multiple variables.
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31 register struct rdes *r1, *r2 = NULL;
125
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32 register int i, j;
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33 register int roomcount;
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34 static struct rdes
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35 {
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36 bool conn[MAXROOMS]; /* possible to connect to room i? */
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37 bool isconn[MAXROOMS]; /* connection been made to room i? */
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38 bool ingraph; /* this room in graph already? */
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39 } rdes[MAXROOMS] = {
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40 { { 0, 1, 0, 1, 0, 0, 0, 0, 0 }, { 0, 0, 0, 0, 0, 0, 0, 0, 0 }, 0 },
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41 { { 1, 0, 1, 0, 1, 0, 0, 0, 0 }, { 0, 0, 0, 0, 0, 0, 0, 0, 0 }, 0 },
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42 { { 0, 1, 0, 0, 0, 1, 0, 0, 0 }, { 0, 0, 0, 0, 0, 0, 0, 0, 0 }, 0 },
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43 { { 1, 0, 0, 0, 1, 0, 1, 0, 0 }, { 0, 0, 0, 0, 0, 0, 0, 0, 0 }, 0 },
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44 { { 0, 1, 0, 1, 0, 1, 0, 1, 0 }, { 0, 0, 0, 0, 0, 0, 0, 0, 0 }, 0 },
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45 { { 0, 0, 1, 0, 1, 0, 0, 0, 1 }, { 0, 0, 0, 0, 0, 0, 0, 0, 0 }, 0 },
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46 { { 0, 0, 0, 1, 0, 0, 0, 1, 0 }, { 0, 0, 0, 0, 0, 0, 0, 0, 0 }, 0 },
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47 { { 0, 0, 0, 0, 1, 0, 1, 0, 1 }, { 0, 0, 0, 0, 0, 0, 0, 0, 0 }, 0 },
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48 { { 0, 0, 0, 0, 0, 1, 0, 1, 0 }, { 0, 0, 0, 0, 0, 0, 0, 0, 0 }, 0 },
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49 };
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50
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51 /*
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52 * reinitialize room graph description
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53 */
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54 for (r1 = rdes; r1 <= &rdes[MAXROOMS-1]; r1++)
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55 {
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56 for (j = 0; j < MAXROOMS; j++)
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57 r1->isconn[j] = FALSE;
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58 r1->ingraph = FALSE;
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59 }
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60
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61 /*
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62 * starting with one room, connect it to a random adjacent room and
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63 * then pick a new room to start with.
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64 */
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65 roomcount = 1;
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66 r1 = &rdes[rnd(MAXROOMS)];
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67 r1->ingraph = TRUE;
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68 do
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69 {
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70 /*
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71 * find a room to connect with
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72 */
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73 j = 0;
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74 for (i = 0; i < MAXROOMS; i++)
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75 if (r1->conn[i] && !rdes[i].ingraph && rnd(++j) == 0)
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76 r2 = &rdes[i];
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77 /*
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78 * if no adjacent rooms are outside the graph, pick a new room
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79 * to look from
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80 */
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81 if (j == 0)
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82 {
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83 do
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84 r1 = &rdes[rnd(MAXROOMS)];
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85 until (r1->ingraph);
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86 }
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87 /*
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88 * otherwise, connect new room to the graph, and draw a tunnel
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89 * to it
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90 */
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