Mercurial > hg > early-roguelike
annotate rogue3/passages.c @ 285:17005af49963
Fix some potential problems detected by clang.
Most of these are unnecessary comparisons and functions returning the
wrong types.
author | John "Elwin" Edwards |
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date | Sat, 23 Sep 2017 09:47:00 -0400 |
parents | d9e44e18eeec |
children | e52a8a7ad4c5 |
rev | line source |
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0
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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 3.4 (Berkeley) 6/15/81 |
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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 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 /* |
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18 * do_passages: |
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19 * Draw all the passages on a level. |
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20 */ |
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21 |
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22 void |
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23 do_passages() |
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24 { |
180 | 25 struct rdes *r1, *r2 = NULL; |
0
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26 int i, j; |
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27 int roomcount; |
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28 static struct rdes |
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29 { |
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30 bool conn[MAXROOMS]; /* possible to connect to room i? */ |
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31 bool isconn[MAXROOMS]; /* connection been made to room i? */ |
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32 bool ingraph; /* this room in graph already? */ |
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33 } rdes[MAXROOMS] = { |
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34 { { 0, 1, 0, 1, 0, 0, 0, 0, 0 }, { 0, 0, 0, 0, 0, 0, 0, 0, 0 }, 0 }, |
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35 { { 1, 0, 1, 0, 1, 0, 0, 0, 0 }, { 0, 0, 0, 0, 0, 0, 0, 0, 0 }, 0 }, |
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36 { { 0, 1, 0, 0, 0, 1, 0, 0, 0 }, { 0, 0, 0, 0, 0, 0, 0, 0, 0 }, 0 }, |
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37 { { 1, 0, 0, 0, 1, 0, 1, 0, 0 }, { 0, 0, 0, 0, 0, 0, 0, 0, 0 }, 0 }, |
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38 { { 0, 1, 0, 1, 0, 1, 0, 1, 0 }, { 0, 0, 0, 0, 0, 0, 0, 0, 0 }, 0 }, |
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39 { { 0, 0, 1, 0, 1, 0, 0, 0, 1 }, { 0, 0, 0, 0, 0, 0, 0, 0, 0 }, 0 }, |
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40 { { 0, 0, 0, 1, 0, 0, 0, 1, 0 }, { 0, 0, 0, 0, 0, 0, 0, 0, 0 }, 0 }, |
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41 { { 0, 0, 0, 0, 1, 0, 1, 0, 1 }, { 0, 0, 0, 0, 0, 0, 0, 0, 0 }, 0 }, |
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42 { { 0, 0, 0, 0, 0, 1, 0, 1, 0 }, { 0, 0, 0, 0, 0, 0, 0, 0, 0 }, 0 }, |
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43 }; |
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44 |
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45 /* |
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46 * reinitialize room graph description |
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47 */ |
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48 for (r1 = rdes; r1 <= &rdes[MAXROOMS-1]; r1++) |
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49 { |
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50 for (j = 0; j < MAXROOMS; j++) |
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51 r1->isconn[j] = FALSE; |
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52 r1->ingraph = FALSE; |
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53 } |
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54 |
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55 /* |
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56 * starting with one room, connect it to a random adjacent room and |
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57 * then pick a new room to start with. |
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58 */ |
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59 roomcount = 1; |
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60 r1 = &rdes[rnd(MAXROOMS)]; |
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61 r1->ingraph = TRUE; |
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62 do |
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63 { |
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64 /* |
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65 * find a room to connect with |
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66 */ |
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67 j = 0; |
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68 for (i = 0; i < MAXROOMS; i++) |
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69 if (r1->conn[i] && !rdes[i].ingraph && rnd(++j) == 0) |
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70 r2 = &rdes[i]; |
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71 /* |
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72 * if no adjacent rooms are outside the graph, pick a new room |
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73 * to look from |
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74 */ |
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75 if (j == 0) |
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76 { |
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77 do |
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78 r1 = &rdes[rnd(MAXROOMS)]; |
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79 until (r1->ingraph); |
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80 } |
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81 /* |
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82 * otherwise, connect new room to the graph, and draw a tunnel |
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83 * to it |
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84 */ |
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85 else |
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86 { |
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87 r2->ingraph = TRUE; |
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88 i = (int)(r1 - rdes); |
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89 j = (int)(r2 - rdes); |
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90 conn(i, j); |
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91 r1->isconn[j] = TRUE; |
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92 r2->isconn[i] = TRUE; |
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93 roomcount++; |
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94 } |
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95 } while (roomcount < MAXROOMS); |
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96 |
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97 /* |
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98 * attempt to add passages to the graph a random number of times so |
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99 * that there isn't just one unique passage through it. |
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100 */ |
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101 for (roomcount = rnd(5); roomcount > 0; roomcount--) |
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102 { |
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103 r1 = &rdes[rnd(MAXROOMS)]; /* a random room to look from */ |
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104 /* |
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105 * find an adjacent room not already connected |
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106 */ |
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107 j = 0; |
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108 for (i = 0; i < MAXROOMS; i++) |
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109 if (r1->conn[i] && !r1->isconn[i] && rnd(++j) == 0) |
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110 r2 = &rdes[i]; |
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111 /* |
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112 * if there is one, connect it and look for the next added |
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113 * passage |
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114 */ |
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115 if (j != 0) |
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116 { |
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117 i = (int)(r1 - rdes); |
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118 j = (int)(r2 - rdes); |
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119 conn(i, j); |
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120 r1->isconn[j] = TRUE; |
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121 r2->isconn[i] = TRUE; |
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122 } |
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123 } |
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124 } |
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125 |
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126 /* |
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127 * conn: |
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128 * Draw a corridor from a room in a certain direction. |
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129 */ |
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130 |
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131 void |
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132 conn(int r1, int r2) |
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133 { |
180 | 134 struct room *rpf, *rpt = NULL; |
0
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135 int rmt; |
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136 int distance, turn_spot, turn_distance; |
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137 int rm; |
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138 int direc; |
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139 coord pdelta, curr, turn_delta, spos, epos; |
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140 |
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141 if (r1 < r2) |
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142 { |
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143 rm = r1; |
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144 if (r1 + 1 == r2) |
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145 direc = 'r'; |
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146 else |
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147 direc = 'd'; |
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148 } |
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149 else |
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150 { |
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151 rm = r2; |
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152 if (r2 + 1 == r1) |
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153 direc = 'r'; |
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154 else |
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155 direc = 'd'; |
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156 } |
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157 rpf = &rooms[rm]; |
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158 /* |
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159 * Set up the movement variables, in two cases: |
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160 * first drawing one down. |
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161 */ |
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162 if (direc == 'd') |
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163 { |
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164 rmt = rm + 3; /* room # of dest */ |
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165 rpt = &rooms[rmt]; /* room pointer of dest */ |
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166 pdelta.x = 0; /* direction of move */ |
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167 pdelta.y = 1; |
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168 spos.x = rpf->r_pos.x; /* start of move */ |
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169 spos.y = rpf->r_pos.y; |
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170 epos.x = rpt->r_pos.x; /* end of move */ |
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171 epos.y = rpt->r_pos.y; |
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172 if (!(rpf->r_flags & ISGONE)) /* if not gone pick door pos */ |
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173 { |
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174 spos.x += rnd(rpf->r_max.x-2)+1; |
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175 spos.y += rpf->r_max.y-1; |
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176 } |
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177 if (!(rpt->r_flags & ISGONE)) |
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178 epos.x += rnd(rpt->r_max.x-2)+1; |
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179 distance = abs(spos.y - epos.y) - 1; /* distance to move */ |
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180 turn_delta.y = 0; /* direction to turn */ |
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181 turn_delta.x = (spos.x < epos.x ? 1 : -1); |
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182 turn_distance = abs(spos.x - epos.x); /* how far to turn */ |
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183 turn_spot = rnd(distance-1) + 1; /* where turn starts */ |
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184 } |
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185 else if (direc == 'r') /* setup for moving right */ |
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186 { |
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187 rmt = rm + 1; |
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188 rpt = &rooms[rmt]; |
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189 pdelta.x = 1; |
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190 pdelta.y = 0; |
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191 spos.x = rpf->r_pos.x; |
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192 spos.y = rpf->r_pos.y; |
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193 epos.x = rpt->r_pos.x; |
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194 epos.y = rpt->r_pos.y; |
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195 if (!(rpf->r_flags & ISGONE)) |
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196 { |
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197 spos.x += rpf->r_max.x-1; |
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198 spos.y += rnd(rpf->r_max.y-2)+1; |
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199 } |
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200 if (!(rpt->r_flags & ISGONE)) |
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201 epos.y += rnd(rpt->r_max.y-2)+1; |
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202 distance = abs(spos.x - epos.x) - 1; |
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203 turn_delta.y = (spos.y < epos.y ? 1 : -1); |
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204 turn_delta.x = 0; |
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205 turn_distance = abs(spos.y - epos.y); |
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206 turn_spot = rnd(distance-1) + 1; |
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207 } |
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208 else |
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209 fatal("error in connection tables"); |
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210 /* |
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211 * Draw in the doors on either side of the passage or just put #'s |
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212 * if the rooms are gone. |
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213 */ |
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214 if (!(rpf->r_flags & ISGONE)) door(rpf, &spos); |
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215 else |
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216 { |
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217 cmov(spos); |
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218 addch('#'); |
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219 } |
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220 if (!(rpt->r_flags & ISGONE)) door(rpt, &epos); |
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221 else |
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222 { |
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223 cmov(epos); |
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224 addch('#'); |
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225 } |
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226 /* |
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227 * Get ready to move... |
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228 */ |
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229 curr.x = spos.x; |
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230 curr.y = spos.y; |
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231 while(distance) |
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232 { |
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233 /* |
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234 * Move to new position |
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235 */ |
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236 curr.x += pdelta.x; |
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237 curr.y += pdelta.y; |
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238 /* |
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239 * Check if we are at the turn place, if so do the turn |
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240 */ |
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241 if (distance == turn_spot && turn_distance > 0) |
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242 while(turn_distance--) |
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243 { |
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244 cmov(curr); |
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245 addch(PASSAGE); |
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246 curr.x += turn_delta.x; |
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247 curr.y += turn_delta.y; |
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248 } |
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249 /* |
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250 * Continue digging along |
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251 */ |
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252 cmov(curr); |
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253 addch(PASSAGE); |
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254 distance--; |
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255 } |
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256 curr.x += pdelta.x; |
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257 curr.y += pdelta.y; |
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258 if (!ce(curr, epos)) |
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259 msg("Warning, connectivity problem on this level."); |
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260 } |
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261 |
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262 /* |
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263 * Add a door or possibly a secret door |
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264 * also enters the door in the exits array of the room. |
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265 */ |
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266 |
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267 void |
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268 door(struct room *rm, coord *cp) |
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269 { |
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270 cmov(*cp); |
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271 addch( (rnd(10) < level - 1 && rnd(100) < 20 ? SECRETDOOR : DOOR) ); |
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272 rm->r_exit[rm->r_nexits++] = *cp; |
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273 } |
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274 |
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275 /* |
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276 * add_pass: |
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277 * add the passages to the current window (wizard command) |
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278 */ |
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279 |
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280 void |
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281 add_pass() |
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282 { |
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283 int y, x, ch; |
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284 |
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285 for (y = 1; y < LINES - 2; y++) |
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286 for (x = 0; x < COLS; x++) |
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287 if ((ch=mvinch(y, x)) == PASSAGE || ch == DOOR || ch == SECRETDOOR) |
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288 mvwaddch(cw, y, x, ch); |
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289 } |