annotate src/input.c @ 4:aa38447a4b21

First entry of Paradise Server 2.9 patch 10 Beta
author darius
date Sat, 06 Dec 1997 04:37:03 +0000
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1 /*--------------------------------------------------------------------------
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2 NETREK II -- Paradise
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3
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4 Permission to use, copy, modify, and distribute this software and its
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5 documentation for any NON-COMMERCIAL purpose (following the terms of
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6 the GNU General Public License (read the file 'COPYING')) and without
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7 fee is hereby granted, provided that this copyright notice appear in all
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8 copies. No representations are made about the suitability of this
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9 software for any purpose. This software is provided "as is" without
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10 express or implied warranty.
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11
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12 Xtrek Copyright 1986 Chris Guthrie
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13 Netrek (Xtrek II) Copyright 1989 Kevin P. Smith
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14 Scott Silvey
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15 Paradise II (Netrek II) Copyright 1993 Larry Denys
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16 Kurt Olsen
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17 Brandon Gillespie
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18
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19 Comprehensive credits are available in the file "CREDITS"
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20 --------------------------------------------------------------------------*/
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21
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22 #include "config.h"
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23 #include <stdio.h>
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24 #include <string.h>
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25 #include <math.h>
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26 #include <sys/types.h>
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27 #include <sys/time.h>
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28 #include <signal.h>
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29 #include <errno.h>
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30 #include "defs.h"
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31 #include "struct.h"
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32 #include "data.h"
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33 #include "shmem.h"
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34
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35 static int sendflag = 0;
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36
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37 extern int intrupt();
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38 extern void start_interruptor();
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39 extern int isClientDead();
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40 int reconnect();
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41 extern int readFromClient();
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42 extern void stop_interruptor();
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43 extern int exitGame();
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44 extern int closeUdpConn();
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45 extern unsigned int sleep();
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46 extern int connectToClient();
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47 extern void (*r_signal()) ();
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48
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49 void
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50 setflag()
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51 {
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52 sendflag = 1;
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53 }
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54
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55
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56 void
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57 input()
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58 {
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59 fd_set readfds;
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60
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61 start_interruptor();
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62
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63 /* Idea: read from client often, send to client not so often */
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64 while (me->p_status == PALIVE ||
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65 me->p_status == PEXPLODE ||
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66 me->p_status == PDEAD ||
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67 me->p_status == POBSERVE)
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68 {
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69 if (isClientDead())
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70 {
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71 if (!reconnect())
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72 exit(0);
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73 }
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74 FD_ZERO(&readfds);
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75 FD_SET(sock, &readfds);
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76 if (udpSock >= 0)
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77 FD_SET(udpSock, &readfds);
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78
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79 /*
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80 * blocks indefinitely unless client input or timerDelay SIGALRM causes
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81 * EINTR
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82 */
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83
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84 if (socketWait() > 0)
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85 {
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86 readFromClient();
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87 }
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88 if (sendflag)
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89 {
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90 intrupt();
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91 sendflag = 0;
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92 }
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93
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94 /* statements below are executed once per timerDelay */
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95 if (me->p_updates > delay)
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96 {
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97 me->p_flags &= ~(PFWAR);
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98 }
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99 if (me->p_updates > rdelay)
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100 {
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101 me->p_flags &= ~(PFREFITTING);
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102 }
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103
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104 /*
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105 * this will ghostbust a player if no ping has been received in
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106 * ping_ghostbust_interval seconds
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107 */
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108
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109 if (configvals->ping_allow_ghostbust
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110 && (me->p_status == PALIVE || me->p_status == POBSERVE)
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111 && ping_ghostbust > configvals->ping_ghostbust_interval)
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112 me->p_ghostbuster = 100000; /* ghostbusted */
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113 else
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114 /* Keep self from being nuked... */
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115 me->p_ghostbuster = 0;
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116 }
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117 stop_interruptor();
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118 }
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119
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120 int
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121 reconnect()
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122 {
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123 int i;
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124
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125 if (noressurect)
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126 exitGame();
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127 stop_interruptor();
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128
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129 r_signal(SIGIO, SIG_IGN);
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130 #ifdef DEBUG
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131 printf("Ack! The client went away!\n");
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132 printf("I will attempt to resurrect him!\n");
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133 fflush(stdout);
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134 #endif
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135 commMode = COMM_TCP;
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136 if (udpSock >= 0)
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137 closeUdpConn();
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138
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139 /* For next two minutes, we try to restore connection */
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140 shutdown(sock, 2);
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141 sock = -1;
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142 for (i = 0;; i++)
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143 {
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144 me->p_ghostbuster = 0;
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145 sleep(5);
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146 if (connectToClient(host, nextSocket))
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147 break;
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148 if (i == 23)
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149 {
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150 #ifdef DEBUG
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151 printf("Oh well, maybe I'm getting rusty!\n");
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152 fflush(stdout);
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153 #endif
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154 return 0;
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155 }
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156 }
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157 start_interruptor();
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158 #ifdef DEBUG
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159 printf("A miracle! He's alive!\n");
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160 fflush(stdout);
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161 #endif
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162 return 1;
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163 }