1 | /* |
1 | /* |
2 | CrossFire, A Multiplayer game for X-windows |
2 | * This file is part of Crossfire TRT, the Multiplayer Online Role Playing Game. |
3 | |
3 | * |
|
|
4 | * Copyright (©) 2005,2006,2007 Marc Alexander Lehmann / Robin Redeker / the Crossfire TRT team |
4 | Copyright (C) 2002-2003 Mark Wedel & The Crossfire Development Team |
5 | * Copyright (©) 2002-2003,2007 Mark Wedel & The Crossfire Development Team |
5 | Copyright (C) 1992 Frank Tore Johansen |
6 | * Copyright (©) 1992,2007 Frank Tore Johansen |
6 | |
7 | * |
7 | This program is free software; you can redistribute it and/or modify |
8 | * Crossfire TRT is free software; you can redistribute it and/or modify it |
8 | it under the terms of the GNU General Public License as published by |
9 | * under the terms of the GNU General Public License as published by the Free |
9 | the Free Software Foundation; either version 2 of the License, or |
10 | * Software Foundation; either version 2 of the License, or (at your option) |
10 | (at your option) any later version. |
11 | * any later version. |
11 | |
12 | * |
12 | This program is distributed in the hope that it will be useful, |
13 | * This program is distributed in the hope that it will be useful, but |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
14 | * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
15 | * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
15 | GNU General Public License for more details. |
16 | * for more details. |
16 | |
17 | * |
17 | You should have received a copy of the GNU General Public License |
18 | * You should have received a copy of the GNU General Public License along |
18 | along with this program; if not, write to the Free Software |
19 | * with Crossfire TRT; if not, write to the Free Software Foundation, Inc. 51 |
19 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
20 | * Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
20 | |
21 | * |
21 | The author can be reached via e-mail to <crossfire@schmorp.de> |
22 | * The authors can be reached via e-mail to <crossfire@schmorp.de> |
22 | */ |
23 | */ |
23 | |
24 | |
24 | /** |
25 | /** |
25 | * \file |
26 | * \file |
26 | * Main client/server loops. |
27 | * Main client/server loops. |
27 | * |
28 | * |
28 | * \date 2003-12-02 |
29 | * \date 2003-12-02 |
29 | * |
30 | * |
30 | * loop.c mainly deals with initialization and higher level socket |
31 | * loop.c mainly deals with initialization and higher level socket |
31 | * maintenance (checking for lost connections and if data has arrived.) |
32 | * maintanance (checking for lost connections and if data has arrived.) |
32 | * The reading of data is handled in ericserver.c |
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33 | */ |
33 | */ |
34 | |
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35 | |
34 | |
36 | #include <global.h> |
35 | #include <global.h> |
37 | #include <sproto.h> |
36 | #include <sproto.h> |
38 | #include <sockproto.h> |
37 | #include <sockproto.h> |
39 | |
38 | |
… | |
… | |
46 | #include <unistd.h> |
45 | #include <unistd.h> |
47 | #include <arpa/inet.h> |
46 | #include <arpa/inet.h> |
48 | |
47 | |
49 | #include <loader.h> |
48 | #include <loader.h> |
50 | |
49 | |
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50 | #define BG_SCRUB_RATE 4 // how often to send a face in the background |
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51 | |
51 | #define MAX_QUEUE_DEPTH 500 //TODO |
52 | #define MAX_QUEUE_DEPTH 500 |
52 | |
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53 | //TODO: cannot use this, as it might ignore vital commands such as fire_stop |
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54 | #define MAX_QUEUE_BACKLOG 1e99 //TODO |
53 | #define MAX_QUEUE_BACKLOG 3. |
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54 | |
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55 | void |
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56 | client::reset_state () |
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57 | { |
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58 | if (!pl) |
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59 | return; |
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60 | |
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61 | pl->run_on = 0; |
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62 | pl->fire_on = 0; |
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63 | } |
55 | |
64 | |
56 | void |
65 | void |
57 | client::queue_command (packet_type *handler, char *data, int datalen) |
66 | client::queue_command (packet_type *handler, char *data, int datalen) |
58 | { |
67 | { |
59 | tstamp stamp = now (); |
68 | tstamp stamp = NOW; |
60 | |
69 | |
61 | if (cmd_queue.size () >= MAX_QUEUE_DEPTH) |
70 | if (cmd_queue.size () >= MAX_QUEUE_DEPTH) |
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71 | { |
62 | //TODO: just disconnect here? |
72 | //TODO: just disconnect here? |
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73 | reset_state (); |
63 | send_packet_printf ("drawinfo %d command queue overflow, ignoring.", NDI_RED); |
74 | send_packet_printf ("drawinfo %d command queue overflow, ignoring.", NDI_RED); |
64 | else if (!cmd_queue.empty () && cmd_queue.front ().stamp + MAX_QUEUE_BACKLOG < stamp) |
75 | } |
65 | //TODO: do fire_stop and other things that might be necessary |
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66 | send_packet_printf ("drawinfo %d too many commands in queue, ignoring.", NDI_RED); |
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67 | else |
76 | else |
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77 | { |
68 | cmd_queue.push_back (command ( |
78 | cmd_queue.push_back (command ()); |
69 | stamp, handler, (char *)salloc (datalen, data), datalen |
79 | command &cmd = cmd_queue.back (); |
70 | )); |
80 | cmd.stamp = stamp; |
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81 | cmd.handler = handler; |
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82 | cmd.data = salloc<char> (datalen + 1, data); |
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83 | cmd.datalen = datalen; |
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84 | } |
71 | } |
85 | } |
72 | |
86 | |
73 | bool |
87 | bool |
74 | client::handle_command () |
88 | client::handle_command () |
75 | { |
89 | { |
76 | if (pl && pl->state == ST_PLAYING && pl->ob && pl->ob->speed_left < 0) |
90 | if (!cmd_queue.empty () |
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91 | && state == ST_PLAYING |
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92 | && pl->ob->speed_left > 0.f) |
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93 | { |
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94 | command &cmd = cmd_queue.front (); |
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95 | |
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96 | if (cmd.stamp + MAX_QUEUE_BACKLOG < NOW) |
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97 | { |
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98 | reset_state (); |
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99 | send_packet_printf ("drawinfo %d ignoring delayed commands.", NDI_RED); |
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100 | } |
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101 | else |
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102 | execute (cmd.handler, cmd.data, cmd.datalen); |
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103 | |
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104 | cmd_queue.pop_front (); |
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105 | return true; |
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106 | } |
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107 | else |
77 | return false; |
108 | return false; |
78 | |
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79 | if (cmd_queue.empty ()) |
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80 | return false; |
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81 | |
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82 | command &cmd = cmd_queue.front (); |
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83 | |
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84 | if (cmd.stamp + MAX_QUEUE_BACKLOG < now ()) |
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85 | //TODO: do fire_stop and other things that might be necessary |
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86 | send_packet_printf ("drawinfo %d ignoring delayed command.", NDI_RED); |
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87 | else |
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88 | execute (cmd.handler, cmd.data, cmd.datalen); |
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89 | |
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90 | sfree (cmd.data, cmd.datalen); |
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91 | cmd_queue.pop_front (); |
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92 | |
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93 | return true; |
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94 | } |
109 | } |
95 | |
110 | |
96 | void |
111 | void |
97 | flush_sockets (void) |
112 | flush_sockets (void) |
98 | { |
113 | { |
99 | for (sockvec::iterator i = clients.begin (); i != clients.end (); ++i) |
114 | for (sockvec::iterator i = clients.begin (); i != clients.end (); ++i) |
100 | if ((*i)->status != Ns_Dead) |
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101 | (*i)->flush (); |
115 | (*i)->flush (); |
102 | } |
116 | } |
103 | |
117 | |
104 | /** |
118 | /** |
105 | * This checks the sockets for input, does the right thing. |
119 | * This checks the sockets for input, does the right thing. |
106 | * |
120 | * |
… | |
… | |
109 | * |
123 | * |
110 | */ |
124 | */ |
111 | void |
125 | void |
112 | doeric_server (void) |
126 | doeric_server (void) |
113 | { |
127 | { |
114 | #ifdef CS_LOGSTATS |
128 | //TODO: should not be done here, either |
115 | if ((time (NULL) - cst_lst.time_start) >= CS_LOGTIME) |
129 | for (unsigned i = 0; i < clients.size (); ++i) |
116 | write_cs_stats (); |
130 | { |
117 | #endif |
131 | client *ns = clients [i]; |
118 | |
132 | |
119 | /* Go through the players. Let the loop set the next pl value, |
133 | ns->tick (); |
120 | * since we may remove some |
134 | ns->refcnt_chk (); |
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135 | } |
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136 | } |
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137 | |
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138 | void |
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139 | client::tick () |
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140 | { |
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141 | if (!pl || destroyed ()) |
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142 | return; |
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143 | |
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144 | /* Update the players stats once per tick. More efficient than |
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145 | * sending them whenever they change, and probably just as useful |
121 | */ |
146 | */ |
122 | //TODO: must be handled cleanly elsewhere |
147 | esrv_update_stats (pl); |
123 | for (player *pl = first_player; pl; ) |
148 | |
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149 | if (last_weight != -1 && last_weight != WEIGHT (pl->ob)) |
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150 | { |
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151 | esrv_update_item (UPD_WEIGHT, pl->ob, pl->ob); |
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152 | if (last_weight != WEIGHT (pl->ob)) |
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153 | LOG (llevError, "esrv_update_item(UPD_WEIGHT) did not set player weight: is %lu, should be %lu\n", |
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154 | (unsigned long) last_weight, WEIGHT (pl->ob)); |
124 | { |
155 | } |
125 | player *npl = pl->next; |
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126 | |
156 | |
127 | //TODO: must be handled cleanly elsewhere |
157 | draw_client_map (pl); |
128 | if (!pl->socket || pl->socket->status == Ns_Dead) |
158 | |
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159 | if (update_look) |
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160 | esrv_draw_look (pl); |
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161 | |
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162 | if (ixface.empty () && !partial_face_ofs) |
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163 | { |
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164 | // regularly send a new face when queue is empty |
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165 | if (bg_scrub && !--bg_scrub && enable_bg_scrub) |
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166 | while (scrub_idx < faces.size () - 1) |
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167 | { |
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168 | ++scrub_idx; |
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169 | if (!faces_sent [scrub_idx]) |
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170 | { |
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171 | send_face (scrub_idx); |
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172 | flush_fx (); |
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173 | |
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174 | bg_scrub = 1; // send up to one face per tick, unless an image was requested |
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175 | break; |
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176 | } |
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177 | } |
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178 | |
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179 | rate_avail = max_rate - outputbuffer_len (); |
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180 | } |
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181 | else |
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182 | { |
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183 | int ol = outputbuffer_len (); |
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184 | |
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185 | rate_avail = min (max_rate, rate_avail + max_rate); |
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186 | rate_avail -= ol; |
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187 | |
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188 | int avail = rate_avail; |
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189 | |
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190 | // if we can split images, transfer up to mss-sized packets if possible |
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191 | // but never 768 bytes more. |
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192 | if (fxix) avail += min (768, mss - (ol % mss)); |
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193 | |
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194 | bg_scrub = BG_SCRUB_RATE; |
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195 | |
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196 | while (avail > 0) |
129 | { |
197 | { |
130 | save_player (pl->ob, 0); |
198 | if (partial_face_ofs) |
131 | |
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132 | if (!QUERY_FLAG (pl->ob, FLAG_REMOVED)) |
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133 | { |
199 | { |
134 | terminate_all_pets (pl->ob); |
200 | if (facedata *d = face_data (partial_face, faceset)) |
135 | pl->ob->remove (); |
201 | { |
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202 | // 9 bytes is enough for fx_FFFOOO, 40 leaves some room for image data |
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203 | int chunk = min (min (avail - 40, MAXSOCKBUF - 9), partial_face_ofs); |
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204 | |
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205 | if (chunk <= 0) |
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206 | break; |
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207 | |
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208 | partial_face_ofs -= chunk; |
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209 | |
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210 | packet sl ("ix"); |
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211 | |
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212 | sl << ber32 (partial_face) |
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213 | << ber32 (partial_face_ofs) |
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214 | << data (d->data.data () + partial_face_ofs, chunk); |
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215 | |
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216 | send_packet (sl); |
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217 | } |
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218 | else |
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219 | partial_face_ofs = 0; |
136 | } |
220 | } |
|
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221 | else if (!ixface.empty ()) |
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222 | { |
|
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223 | // use a lifo to send most recently requested images |
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224 | faceidx facenum = ixface.back (); |
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225 | ixface.pop_back (); |
137 | |
226 | |
138 | leave (pl, 1); |
227 | if (fxix) |
139 | final_free_player (pl); |
228 | { |
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229 | if (facedata *d = face_data (facenum, faceset)) |
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230 | { |
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231 | partial_face = facenum; |
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232 | partial_face_ofs = d->data.size (); |
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233 | } |
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234 | } |
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235 | else |
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236 | send_image (facenum); |
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237 | } |
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238 | else |
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239 | break; |
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240 | |
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241 | int consumed = ol - outputbuffer_len (); |
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242 | avail -= consumed; |
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243 | rate_avail -= consumed; |
140 | } |
244 | } |
141 | |
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142 | pl = npl; |
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143 | } |
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144 | |
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145 | for (sockvec::iterator i = clients.begin (); i != clients.end (); ) |
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146 | { |
245 | } |
147 | client *s = *i; |
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148 | |
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149 | if (s->status == Ns_Dead) |
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150 | { |
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151 | clients.erase (i); |
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152 | delete s; |
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153 | } |
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154 | else |
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155 | ++i; |
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156 | } |
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157 | |
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158 | /* We need to do some of the processing below regardless */ |
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159 | |
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160 | /* Check for any input on the sockets */ |
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161 | for (sockvec::iterator i = clients.begin (); i != clients.end (); ++i) |
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162 | { |
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163 | client *s = *i; |
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164 | player *pl = s->pl; |
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165 | |
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166 | s->handle_packet (); |
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167 | s->handle_command (); |
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168 | |
|
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169 | //TODO: should not be done here, either |
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170 | if (s->status != Ns_Dead && pl) |
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171 | { |
|
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172 | /* Update the players stats once per tick. More efficient than |
|
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173 | * sending them whenever they change, and probably just as useful |
|
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174 | */ |
|
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175 | esrv_update_stats (pl); |
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176 | |
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177 | if (pl->last_weight != -1 && pl->last_weight != WEIGHT (pl->ob)) |
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178 | { |
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179 | esrv_update_item (UPD_WEIGHT, pl->ob, pl->ob); |
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180 | if (pl->last_weight != WEIGHT (pl->ob)) |
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181 | LOG (llevError, "esrv_update_item(UPD_WEIGHT) did not set player weight: is %lu, should be %lu\n", |
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182 | (unsigned long) pl->last_weight, WEIGHT (pl->ob)); |
|
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183 | } |
|
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184 | |
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185 | draw_client_map (pl->ob); |
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186 | |
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187 | if (s->update_look) |
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188 | esrv_draw_look (pl->ob); |
|
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189 | } |
|
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190 | } |
|
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191 | } |
246 | } |
192 | |
247 | |