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annotate xrogue/passages.c @ 218:56e748983fa8

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Advanced Rogue 5: convert to ANSI function declarations. This still leaves over a thousand lines of warning messages, mostly related to the return types of daemons and fuses.
author John "Elwin" Edwards
date Sun, 07 Feb 2016 14:39:21 -0500
parents e6179860cb76
children f54901b9c39b
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133
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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 XRogue: Expeditions into the Dungeons of Doom
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5 Copyright (C) 1991 Robert Pietkivitch
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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 and AT&T
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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 <curses.h>
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20 #include "rogue.h"
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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
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27 do_passages()
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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 (i = 0; i < MAXROOMS; i++)
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53 {
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54 r1 = &rdes[i];
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55 for (j = 0; j < MAXROOMS; j++)
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56 r1->isconn[j] = FALSE;
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57 r1->ingraph = FALSE;
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58 }
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59
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60 /*
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61 * starting with one room, connect it to a random adjacent room and
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62 * then pick a new room to start with.
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63 */
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64 roomcount = 1;
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65 r1 = &rdes[rnd(MAXROOMS)];
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66 r1->ingraph = TRUE;
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67 do
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68 {
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69 /*
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70 * find a room to connect with
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71 */
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72 j = 0;
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73 for (i = 0; i < MAXROOMS; i++)
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74 if (r1->conn[i] && !rdes[i].ingraph && rnd(++j) == 0)
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75 r2 = &rdes[i];
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76 /*
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77 * if no adjacent rooms are outside the graph, pick a new room
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78 * to look from
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79 */
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80 if (j == 0)
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81 {
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82 do
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83 r1 = &rdes[rnd(MAXROOMS)];
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84 until (r1->ingraph);
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85 }
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86 /*
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87 * otherwise, connect new room to the graph, and draw a tunnel
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88 * to it
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89 */
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90 else
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91 {
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92 r2->ingraph = TRUE;