Mercurial > hg > early-roguelike
annotate rogue5/mach_dep.c @ 117:2c62bd925c17
rogue5: save the game when SIGHUP is received.
This vital feature was turned off by default, requiring DUMP to be
defined to turn it on. DUMP has the opposite effect in the other
games.
author | John "Elwin" Edwards |
---|---|
date | Sat, 26 Apr 2014 08:52:26 -0700 |
parents | 655c317b6237 |
children | e52a8a7ad4c5 |
rev | line source |
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33
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1 /* |
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2 * Various installation dependent routines |
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3 * |
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4 * @(#)mach_dep.c 4.37 (Berkeley) 05/23/83 |
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5 * |
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6 * Rogue: Exploring the Dungeons of Doom |
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7 * Copyright (C) 1980-1983, 1985, 1999 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 /* |
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14 * The various tuneable defines are: |
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15 * |
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16 * SCOREFILE Where/if the score file should live. |
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17 * ALLSCORES Score file is top ten scores, not top ten |
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18 * players. This is only useful when only a few |
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19 * people will be playing; otherwise the score file |
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20 * gets hogged by just a few people. |
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21 * NUMSCORES Number of scores in the score file (default 10). |
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22 * NUMNAME String version of NUMSCORES (first character |
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23 * should be capitalized) (default "Ten"). |
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24 * MAXLOAD What (if any) the maximum load average should be |
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25 * when people are playing. Since it is divided |
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26 * by 10, to specify a load limit of 4.0, MAXLOAD |
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27 * should be "40". If defined, then |
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28 * LOADAV Should it use it's own routine to get |
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29 * the load average? |
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30 * NAMELIST If so, where does the system namelist |
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31 * hide? |
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32 * MAXUSERS What (if any) the maximum user count should be |
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33 * when people are playing. If defined, then |
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34 * UCOUNT Should it use it's own routine to count |
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35 * users? |
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36 * UTMP If so, where does the user list hide? |
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37 * CHECKTIME How often/if it should check during the game |
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38 * for high load average. |
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39 */ |
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40 |
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41 #include <signal.h> |
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42 #include <sys/types.h> |
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43 #include <sys/stat.h> |
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44 #include <limits.h> |
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45 #include <string.h> |
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46 #include <fcntl.h> |
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47 #include <errno.h> |
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48 #include <time.h> |
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49 #include <curses.h> |
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50 #include "extern.h" |
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51 |
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52 #define NOOP(x) (x += 0) |
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53 |
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54 # ifndef NUMSCORES |
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55 # define NUMSCORES 10 |
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56 # define NUMNAME "Ten" |
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57 # endif |
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58 |
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59 #ifdef CHECKTIME |
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60 static int num_checks = 0; /* times we've gone over in checkout() */ |
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61 #endif /* CHECKTIME */ |
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62 |
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63 /* |
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64 * init_check: |
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65 * Check out too see if it is proper to play the game now |
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66 */ |
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67 |
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68 void |
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69 init_check(void) |
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70 { |
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71 #if defined(MAXLOAD) || defined(MAXUSERS) |
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72 if (too_much()) |
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73 { |
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74 printf("Sorry, %s, but the system is too loaded now.\n", whoami); |
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75 printf("Try again later. Meanwhile, why not enjoy a%s %s?\n", |
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76 vowelstr(fruit), fruit); |
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77 if (author()) |
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78 printf("However, since you're a good guy, it's up to you\n"); |
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79 else |
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80 exit(1); |
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81 } |
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82 #endif |
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83 } |
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84 |
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85 /* |
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86 * open_score: |
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87 * Open up the score file for future use |
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88 */ |
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89 |
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90 void |
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91 open_score(void) |
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92 { |
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93 #ifdef SCOREFILE |
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94 char *scorefile = SCOREFILE; |
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95 |
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96 numscores = NUMSCORES; |
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97 Numname = NUMNAME; |
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98 |
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99 #ifdef ALLSCORES |
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100 allscore = TRUE; |
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101 #else /* ALLSCORES */ |
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102 allscore = FALSE; |
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103 #endif /* ALLSCORES */ |
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104 |
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105 /* |
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106 * We drop setgid privileges after opening the score file, so subsequent |
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107 * open()'s will fail. Just reuse the earlier filehandle. |
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108 */ |
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109 |
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110 if (scoreboard != NULL) { |
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111 rewind(scoreboard); |
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112 return; |
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113 } |
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114 |
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115 scoreboard = fopen(scorefile, "r+"); |
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116 |
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117 if ((scoreboard == NULL) && (errno == ENOENT)) |
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118 { |
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119 scoreboard = fopen(scorefile, "w+"); |
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120 md_chmod(scorefile,0664); |
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121 } |
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122 |
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123 if (scoreboard == NULL) { |
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124 fprintf(stderr, "Could not open %s for writing: %s\n", scorefile, strerror(errno)); |
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125 fflush(stderr); |
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126 } |
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127 #else |
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128 scoreboard = NULL; |
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129 #endif |
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130 } |
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131 |
34 | 132 void |
133 open_log(void) | |
134 { | |
135 #ifdef LOGFILE | |
136 logfi = fopen(LOGFILE, "a"); | |
137 if (logfi == NULL) | |
138 { | |
139 fprintf(stderr, "Could not open %s for appending: %s\n", LOGFILE, | |
140 strerror(errno)); | |
141 fflush(stderr); | |
142 } | |
143 #endif | |
144 return; | |
145 } | |
146 | |
33
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147 /* |
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148 * getltchars: |
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149 * Get the local tty chars for later use |
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150 */ |
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151 |
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152 void |
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153 getltchars(void) |
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154 { |
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155 got_ltc = TRUE; |
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156 orig_dsusp = md_dsuspchar(); |
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157 md_setdsuspchar( md_suspchar() ); |
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158 } |
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159 |
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160 /* |
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161 * setup: |
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162 * Get starting setup for all games |
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163 */ |
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164 |
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165 void |
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166 setup(void) |
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167 { |
117
2c62bd925c17
rogue5: save the game when SIGHUP is received.
John "Elwin" Edwards
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34
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168 #ifndef DUMP |
33
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169 md_onsignal_autosave(); |
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170 #else |
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171 md_onsignal_default(); |
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172 #endif |
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173 |
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174 #ifdef CHECKTIME |
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175 md_start_checkout_timer(CHECKTIME*60); |
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176 num_checks = 0; |
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177 #endif |
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178 |
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179 raw(); /* Raw mode */ |
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180 noecho(); /* Echo off */ |
34 | 181 nonl(); |
33
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182 keypad(stdscr,1); |
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183 getltchars(); /* get the local tty chars */ |
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184 } |
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185 |
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186 /* |
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187 * resetltchars: |
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188 * Reset the local tty chars to original values. |
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189 */ |
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190 void |
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191 resetltchars(void) |
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192 { |
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193 if (got_ltc) { |
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194 md_setdsuspchar(orig_dsusp); |
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195 } |
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196 } |
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197 |
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198 /* |
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199 * playltchars: |
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200 * Set local tty chars to the values we use when playing. |
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201 */ |
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202 void |
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203 playltchars(void) |
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204 { |
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205 if (got_ltc) { |
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206 md_setdsuspchar( md_suspchar() ); |
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207 } |
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208 } |
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209 |
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210 /* |
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211 * start_score: |
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212 * Start the scoring sequence |
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213 */ |
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214 |
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215 void |
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216 start_score(void) |
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217 { |
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218 #ifdef CHECKTIME |
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219 md_stop_checkout_timer(); |
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220 #endif |
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221 } |
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222 |
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223 /* |
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224 * is_symlink: |
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225 * See if the file has a symbolic link |
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226 */ |
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227 int |
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228 is_symlink(char *sp) |
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229 { |
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230 #ifdef S_IFLNK |
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231 struct stat sbuf2; |
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232 |
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233 if (lstat(sp, &sbuf2) < 0) |
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234 return FALSE; |
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235 else |
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236 return ((sbuf2.st_mode & S_IFMT) != S_IFREG); |
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237 #else |
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|
238 NOOP(sp); |
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239 return FALSE; |
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|
240 #endif |
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241 } |
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242 |
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243 #if defined(MAXLOAD) || defined(MAXUSERS) |
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Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
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244 /* |
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245 * too_much: |
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246 * See if the system is being used too much for this game |
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Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
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247 */ |
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248 int |
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249 too_much(void) |
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250 { |
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251 #ifdef MAXLOAD |
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252 double avec[3]; |
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253 #else |
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254 int cnt; |
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255 #endif |
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256 |
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257 #ifdef MAXLOAD |
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258 md_loadav(avec); |
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259 if (avec[1] > (MAXLOAD / 10.0)) |
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260 return TRUE; |
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|
261 #endif |
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262 #ifdef MAXUSERS |
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263 if (ucount() > MAXUSERS) |
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264 return TRUE; |
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|
265 #endif |
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266 return FALSE; |
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|
267 } |
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268 |
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269 /* |
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270 * author: |
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271 * See if a user is an author of the program |
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Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
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|
272 */ |
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273 int |
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274 author(void) |
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275 { |
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276 #ifdef MASTER |
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277 if (wizard) |
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278 return TRUE; |
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Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
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|
279 #endif |
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280 switch (md_getuid()) |
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|
281 { |
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|
282 case -1: |
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|
283 return TRUE; |
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|
284 default: |
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|
285 return FALSE; |
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Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
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|
286 } |
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Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
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|
287 } |
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|
288 #endif |
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|
289 |
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|
290 #ifdef CHECKTIME |
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291 /* |
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292 * checkout: |
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293 * Check each CHECKTIME seconds to see if the load is too high |
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294 */ |
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295 |
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296 checkout(int sig) |
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297 { |
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298 char *msgs[] = { |
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299 "The load is too high to be playing. Please leave in %0.1f minutes", |
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300 "Please save your game. You have %0.1f minutes", |
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301 "Last warning. You have %0.1f minutes to leave", |
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302 }; |
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303 int checktime; |
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|
304 |
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305 if (too_much()) |
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306 { |
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307 if (author()) |
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308 { |
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309 num_checks = 1; |
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310 chmsg("The load is rather high, O exaulted one"); |
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311 } |
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312 else if (num_checks++ == 3) |
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313 fatal("Sorry. You took too long. You are dead\n"); |
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314 checktime = (CHECKTIME * 60) / num_checks; |
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315 chmsg(msgs[num_checks - 1], ((double) checktime / 60.0)); |
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316 } |
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317 else |
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318 { |
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319 if (num_checks) |
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320 { |
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321 num_checks = 0; |
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322 chmsg("The load has dropped back down. You have a reprieve"); |
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323 } |
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324 checktime = (CHECKTIME * 60); |
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325 } |
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326 |
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327 md_start_checkout_timer(checktime); |
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328 } |
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329 |
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330 /* |
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331 * chmsg: |
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332 * checkout()'s version of msg. If we are in the middle of a |
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333 * shell, do a printf instead of a msg to a the refresh. |
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334 */ |
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335 /* VARARGS1 */ |
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336 |
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337 chmsg(char *fmt, int arg) |
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338 { |
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339 if (!in_shell) |
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340 msg(fmt, arg); |
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341 else |
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342 { |
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343 printf(fmt, arg); |
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344 putchar('\n'); |
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345 fflush(stdout); |
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346 } |
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347 } |
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348 #endif |
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349 |
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350 #ifdef UCOUNT |
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351 /* |
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352 * ucount: |
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353 * count number of users on the system |
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354 */ |
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355 #include <utmp.h> |
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356 |
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357 struct utmp buf; |
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358 |
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359 int |
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360 ucount(void) |
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361 { |
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362 struct utmp *up; |
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363 FILE *utmp; |
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364 int count; |
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365 |
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366 if ((utmp = fopen(UTMP, "r")) == NULL) |
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367 return 0; |
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368 |
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369 up = &buf; |
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370 count = 0; |
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371 |
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372 while (fread(up, 1, sizeof (*up), utmp) > 0) |
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373 if (buf.ut_name[0] != '\0') |
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374 count++; |
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375 fclose(utmp); |
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376 return count; |
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377 } |
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|
378 #endif |
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379 |
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380 /* |
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381 * lock_sc: |
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382 * lock the score file. If it takes too long, ask the user if |
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383 * they care to wait. Return TRUE if the lock is successful. |
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|
384 */ |
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385 static FILE *lfd = NULL; |
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|
386 int |
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|
387 lock_sc(void) |
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388 { |
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389 #if defined(SCOREFILE) && defined(LOCKFILE) |
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390 int cnt; |
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|
391 struct stat sbuf; |
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392 char *lockfile = LOCKFILE; |
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Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
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|
393 |
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Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
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394 over: |
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395 if ((lfd=fopen(lockfile, "w+")) != NULL) |
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Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
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396 return TRUE; |
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Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
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397 for (cnt = 0; cnt < 5; cnt++) |
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Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
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|
398 { |
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Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
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|
399 md_sleep(1); |
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Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
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|
400 if ((lfd=fopen(lockfile, "w+")) != NULL) |
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Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
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|
401 return TRUE; |
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Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
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|
402 } |
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Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
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|
403 if (stat(lockfile, &sbuf) < 0) |
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Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
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diff
changeset
|
404 { |
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Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
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diff
changeset
|
405 lfd=fopen(lockfile, "w+"); |
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Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
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|
406 return TRUE; |
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Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
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parents:
diff
changeset
|
407 } |
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Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
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parents:
diff
changeset
|
408 if (time(NULL) - sbuf.st_mtime > 10) |
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Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
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|
409 { |
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Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
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|
410 if (md_unlink(lockfile) < 0) |
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Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
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|
411 return FALSE; |
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Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
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|
412 goto over; |
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Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
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diff
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|
413 } |
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Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
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|
414 else |
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Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
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diff
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|
415 { |
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Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
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|
416 printf("The score file is very busy. Do you want to wait longer\n"); |
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Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
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|
417 printf("for it to become free so your score can get posted?\n"); |
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Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
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418 printf("If so, type \"y\"\n"); |
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Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
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|
419 (void) fgets(prbuf, MAXSTR, stdin); |
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Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
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|
420 if (prbuf[0] == 'y') |
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Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
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|
421 for (;;) |
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Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
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|
422 { |
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Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
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parents:
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changeset
|
423 if ((lfd=fopen(lockfile, "w+")) != 0) |
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Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
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|
424 return TRUE; |
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Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
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parents:
diff
changeset
|
425 if (stat(lockfile, &sbuf) < 0) |
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Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
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parents:
diff
changeset
|
426 { |
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Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
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parents:
diff
changeset
|
427 lfd=fopen(lockfile, "w+"); |
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Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
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changeset
|
428 return TRUE; |
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Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
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parents:
diff
changeset
|
429 } |
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Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
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430 if (time(NULL) - sbuf.st_mtime > 10) |
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431 { |
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432 if (md_unlink(lockfile) < 0) |
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433 return FALSE; |
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434 } |
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435 md_sleep(1); |
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436 } |
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437 else |
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438 return FALSE; |
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439 } |
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440 #else |
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441 return TRUE; |
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442 #endif |
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443 } |
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444 |
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445 /* |
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446 * unlock_sc: |
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447 * Unlock the score file |
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448 */ |
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449 |
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450 void |
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451 unlock_sc(void) |
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452 { |
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453 #if defined(SCOREFILE) && defined(LOCKFILE) |
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454 if (lfd != NULL) |
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455 fclose(lfd); |
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456 lfd = NULL; |
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457 md_unlink(LOCKFILE); |
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458 #endif |
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459 } |
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460 |
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461 /* |
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462 * flush_type: |
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463 * Flush typeahead for traps, etc. |
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464 */ |
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465 |
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466 void |
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467 flush_type(void) |
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468 { |
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469 flushinp(); |
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470 } |