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annotate rogue4/daemon.c @ 228:b67b99f6c92b

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Daemons and fuses now return void. Functions for starting and stopping daemons and fuses now expect the type 'void (*func)()'. Only a few functions in XRogue needed to be modified to fit. Determining the type of the argument is left for a later date. Building with GCC5 should now produce less than 200 lines of warnings per game.
author John "Elwin" Edwards
date Sat, 05 Mar 2016 20:49:37 -0500
parents 1b73a8641b37
children
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1 /*
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2 * Contains functions for dealing with things that happen in the
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3 * future.
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4 *
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5 * @(#)daemon.c 4.4 (Berkeley) 1/12/82
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6 *
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7 * Rogue: Exploring the Dungeons of Doom
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8 * Copyright (C) 1980, 1981, 1982 Michael Toy, Ken Arnold and Glenn Wichman
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9 * All rights reserved.
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10 *
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11 * See the file LICENSE.TXT for full copyright and licensing information.
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12 */
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13
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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 #define EMPTY 0
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18 #define DAEMON -1
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19
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20 #define _X_ { EMPTY }
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21
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22 struct delayed_action d_list[MAXDAEMONS] = {
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23 _X_, _X_, _X_, _X_, _X_, _X_, _X_, _X_, _X_, _X_,
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24 _X_, _X_, _X_, _X_, _X_, _X_, _X_, _X_, _X_, _X_,
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25 };
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26
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27 /*
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28 * d_slot:
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29 * Find an empty slot in the daemon/fuse list
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30 */
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31 struct delayed_action *
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32 d_slot(void)
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33 {
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34 register int i;
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35 register struct delayed_action *dev;
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36
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37 for (i = 0, dev = d_list; i < MAXDAEMONS; i++, dev++)
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38 if (dev->d_type == EMPTY)
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39 return dev;
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40 #ifdef WIZARD
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41 debug("Ran out of fuse slots");
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42 #endif
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43 return NULL;
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44 }
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45
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46 /*
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47 * find_slot:
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48 * Find a particular slot in the table
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49 */
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50 struct delayed_action *
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51 find_slot(void (*func)())
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52 {
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53 register int i;
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54 register struct delayed_action *dev;
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55
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56 for (i = 0, dev = d_list; i < MAXDAEMONS; i++, dev++)
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57 if (dev->d_type != EMPTY && func == dev->d_func)
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58 return dev;
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59 return NULL;
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60 }
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61
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62 /*
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63 * start_daemon:
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64 * Start a daemon, takes a function.
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65 */
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66 void
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67 start_daemon(void (*func)(), int arg, int type)
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68 {
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69 register struct delayed_action *dev;
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70
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71 dev = d_slot();
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72 dev->d_type = type;
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73 dev->d_func = func;
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74 dev->d_arg = arg;
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75 dev->d_time = DAEMON;
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76 }
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77
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78 /*
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79 * kill_daemon:
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80 * Remove a daemon from the list
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81 */
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82 void
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83 kill_daemon(void (*func)())
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84 {
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85 register struct delayed_action *dev;
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86
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87 if ((dev = find_slot(func)) == NULL)
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88 return;
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89 /*
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90 * Take it out of the list
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91 */
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92 dev->d_type = EMPTY;
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93 }
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94
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95 /*
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96 * do_daemons:
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97 * Run all the daemons that are active with the current flag,
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98 * passing the argument to the function.
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99 */
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100 void
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101 do_daemons(int flag)
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102 {
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103 register struct delayed_action *dev;
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104
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105 /*
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106 * Loop through the devil list
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107 */
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108 for (dev = d_list; dev <= &d_list[MAXDAEMONS-1]; dev++)
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109 /*
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110 * Executing each one, giving it the proper arguments
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111 */
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112 if (dev->d_type == flag && dev->d_time == DAEMON)
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113 (*dev->d_func)(dev->d_arg);
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114 }
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115
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116 /*
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117 * fuse:
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118 * Start a fuse to go off in a certain number of turns
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119 */
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120 void
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121 fuse(void (*func)(), int arg, int time, int type)
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122 {
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123 register struct delayed_action *wire;
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124
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125 wire = d_slot();
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126 wire->d_type = type;
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127 wire->d_func = func;
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128 wire->d_arg = arg;
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129 wire->d_time = time;
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130 }
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131
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132 /*
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133 * lengthen:
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134 * Increase the time until a fuse goes off
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135 */
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136 void
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137 lengthen(void (*func)(), int xtime)
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138 {
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139 register struct delayed_action *wire;
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140
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141 if ((wire = find_slot(func)) == NULL)
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142 return;
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143 wire->d_time += xtime;
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144 }
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145
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146 /*
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147 * extinguish:
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148 * Put out a fuse
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149 */
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150 void
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151 extinguish(void (*func)())
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152 {
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153 register struct delayed_action *wire;
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154
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155 if ((wire = find_slot(func)) == NULL)
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156 return;
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157 wire->d_type = EMPTY;
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158 }
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159
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160 /*
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161 * do_fuses:
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162 * Decrement counters and start needed fuses
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163 */
215
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164 void
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165 do_fuses(int flag)
12
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166 {
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167 register struct delayed_action *wire;
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168
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169 /*
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170 * Step though the list
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171 */
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172 for (wire = d_list; wire <= &d_list[MAXDAEMONS-1]; wire++)
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173 {
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174 /*
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175 * Decrementing counters and starting things we want. We also need
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176 * to remove the fuse from the list once it has gone off.
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177 */
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178 if (flag == wire->d_type && wire->d_time > 0 && --wire->d_time == 0)
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179 {
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180 wire->d_type = EMPTY;
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181 (*wire->d_func)(wire->d_arg);
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182 }
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183 }
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184 }