1 | /* |
1 | /* |
2 | CrossFire, A Multiplayer game for X-windows |
2 | * This file is part of Crossfire TRT, the Roguelike Realtime MORPG. |
3 | |
3 | * |
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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 |
8 | it under the terms of the GNU General Public License as published by |
9 | * it under the terms of the GNU General Public License as published by |
9 | the Free Software Foundation; either version 2 of the License, or |
10 | * the Free Software Foundation, either version 3 of the License, or |
10 | (at your option) any later version. |
11 | * (at your option) 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, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
15 | GNU General Public License for more details. |
16 | * GNU General Public License 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 |
18 | along with this program; if not, write to the Free Software |
19 | * along with this program. If not, see <http://www.gnu.org/licenses/>. |
19 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
20 | * |
20 | |
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21 | The author can be reached via e-mail to <crossfire@schmorp.de> |
21 | * The authors can be reached via e-mail to <crossfire@schmorp.de> |
22 | */ |
22 | */ |
23 | |
23 | |
24 | /** |
24 | /** |
25 | * \file |
25 | * \file |
26 | * Main client/server loops. |
26 | * Main client/server loops. |
27 | * |
27 | * |
28 | * \date 2003-12-02 |
28 | * \date 2003-12-02 |
29 | * |
29 | * |
30 | * loop.c mainly deals with initialization and higher level socket |
30 | * loop.c mainly deals with initialization and higher level socket |
31 | * maintenance (checking for lost connections and if data has arrived.) |
31 | * 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 | */ |
32 | */ |
34 | |
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35 | |
33 | |
36 | #include <global.h> |
34 | #include <global.h> |
37 | #include <sproto.h> |
35 | #include <sproto.h> |
38 | #include <sockproto.h> |
36 | #include <sockproto.h> |
39 | |
37 | |
… | |
… | |
46 | #include <unistd.h> |
44 | #include <unistd.h> |
47 | #include <arpa/inet.h> |
45 | #include <arpa/inet.h> |
48 | |
46 | |
49 | #include <loader.h> |
47 | #include <loader.h> |
50 | |
48 | |
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49 | #define BG_SCRUB_RATE 4 // how often to send a face in the background |
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50 | |
51 | #define MAX_QUEUE_DEPTH 500 //TODO |
51 | #define MAX_QUEUE_DEPTH 500 |
52 | #define MAX_QUEUE_BACKLOG 5. //TODO |
52 | #define MAX_QUEUE_BACKLOG 3. |
53 | |
53 | |
54 | void |
54 | void |
55 | client::reset_state () |
55 | client::reset_state () |
56 | { |
56 | { |
57 | if (!pl) |
57 | if (!pl) |
… | |
… | |
62 | } |
62 | } |
63 | |
63 | |
64 | void |
64 | void |
65 | client::queue_command (packet_type *handler, char *data, int datalen) |
65 | client::queue_command (packet_type *handler, char *data, int datalen) |
66 | { |
66 | { |
67 | tstamp stamp = now (); |
67 | tstamp stamp = NOW; |
68 | |
68 | |
69 | if (cmd_queue.size () >= MAX_QUEUE_DEPTH) |
69 | if (cmd_queue.size () >= MAX_QUEUE_DEPTH) |
70 | { |
70 | { |
71 | //TODO: just disconnect here? |
71 | //TODO: just disconnect here? |
72 | reset_state (); |
72 | reset_state (); |
73 | send_packet_printf ("drawinfo %d command queue overflow, ignoring.", NDI_RED); |
73 | send_packet_printf ("drawinfo %d command queue overflow, ignoring.", NDI_RED); |
74 | } |
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75 | else if (!cmd_queue.empty () && cmd_queue.front ().stamp + MAX_QUEUE_BACKLOG < stamp) |
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76 | { |
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77 | reset_state (); |
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78 | send_packet_printf ("drawinfo %d too many commands in queue, ignoring.", NDI_RED); |
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79 | } |
74 | } |
80 | else |
75 | else |
81 | { |
76 | { |
82 | cmd_queue.push_back (command ()); |
77 | cmd_queue.push_back (command ()); |
83 | command &cmd = cmd_queue.back (); |
78 | command &cmd = cmd_queue.back (); |
84 | cmd.stamp = stamp; |
79 | cmd.stamp = stamp; |
85 | cmd.handler = handler; |
80 | cmd.handler = handler; |
86 | cmd.data = (char *)salloc (datalen + 1, data); |
81 | cmd.data = salloc<char> (datalen + 1, data); |
87 | cmd.datalen = datalen; |
82 | cmd.datalen = datalen; |
88 | } |
83 | } |
89 | } |
84 | } |
90 | |
85 | |
91 | bool |
86 | bool |
92 | client::handle_command () |
87 | client::handle_command () |
93 | { |
88 | { |
94 | if (pl && pl->state == ST_PLAYING && pl->ob && pl->ob->speed_left < 0) |
89 | if (!cmd_queue.empty () |
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90 | && state == ST_PLAYING |
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91 | && pl->ob->speed_left > 0.f) |
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92 | { |
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93 | command &cmd = cmd_queue.front (); |
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94 | |
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95 | if (cmd.stamp + MAX_QUEUE_BACKLOG < NOW) |
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96 | { |
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97 | reset_state (); |
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98 | send_packet_printf ("drawinfo %d ignoring delayed commands.", NDI_RED); |
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99 | } |
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100 | else |
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101 | execute (cmd.handler, cmd.data, cmd.datalen); |
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102 | |
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103 | cmd_queue.pop_front (); |
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104 | return true; |
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105 | } |
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106 | else |
95 | return false; |
107 | return false; |
96 | |
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97 | if (cmd_queue.empty ()) |
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98 | return false; |
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99 | |
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100 | command &cmd = cmd_queue.front (); |
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101 | |
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102 | if (cmd.stamp + MAX_QUEUE_BACKLOG < now ()) |
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103 | { |
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104 | reset_state (); |
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105 | send_packet_printf ("drawinfo %d ignoring delayed command.", NDI_RED); |
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106 | } |
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107 | else |
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108 | execute (cmd.handler, cmd.data, cmd.datalen); |
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109 | |
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110 | cmd_queue.pop_front (); |
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111 | |
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112 | return true; |
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113 | } |
108 | } |
114 | |
109 | |
115 | void |
110 | void |
116 | flush_sockets (void) |
111 | flush_sockets (void) |
117 | { |
112 | { |
118 | for (sockvec::iterator i = clients.begin (); i != clients.end (); ++i) |
113 | for (sockvec::iterator i = clients.begin (); i != clients.end (); ++i) |
119 | if ((*i)->status != Ns_Dead) |
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120 | (*i)->flush (); |
114 | (*i)->flush (); |
121 | } |
115 | } |
122 | |
116 | |
123 | /** |
117 | /** |
124 | * This checks the sockets for input, does the right thing. |
118 | * This checks the sockets for input, does the right thing. |
125 | * |
119 | * |
… | |
… | |
128 | * |
122 | * |
129 | */ |
123 | */ |
130 | void |
124 | void |
131 | doeric_server (void) |
125 | doeric_server (void) |
132 | { |
126 | { |
133 | #ifdef CS_LOGSTATS |
127 | //TODO: should not be done here, either |
134 | if ((time (NULL) - cst_lst.time_start) >= CS_LOGTIME) |
128 | for (unsigned i = 0; i < clients.size (); ++i) |
135 | write_cs_stats (); |
129 | { |
136 | #endif |
130 | client *ns = clients [i]; |
137 | |
131 | |
138 | /* Go through the players. Let the loop set the next pl value, |
132 | ns->tick (); |
139 | * since we may remove some |
133 | ns->refcnt_chk (); |
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134 | } |
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135 | } |
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136 | |
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137 | void |
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138 | client::tick () |
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139 | { |
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140 | if (!pl || destroyed ()) |
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141 | return; |
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142 | |
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143 | /* Update the players stats once per tick. More efficient than |
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144 | * sending them whenever they change, and probably just as useful |
140 | */ |
145 | */ |
141 | //TODO: must be handled cleanly elsewhere |
146 | esrv_update_stats (pl); |
142 | for (player *pl = first_player; pl; ) |
147 | |
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148 | if (last_weight != -1 && last_weight != WEIGHT (pl->ob)) |
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149 | { |
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150 | esrv_update_item (UPD_WEIGHT, pl->ob, pl->ob); |
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151 | if (last_weight != WEIGHT (pl->ob)) |
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152 | LOG (llevError, "esrv_update_item(UPD_WEIGHT) did not set player weight: is %lu, should be %lu\n", |
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153 | (unsigned long) last_weight, WEIGHT (pl->ob)); |
143 | { |
154 | } |
144 | player *npl = pl->next; |
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145 | |
155 | |
146 | //TODO: must be handled cleanly elsewhere |
156 | draw_client_map (pl); |
147 | if (!pl->socket || pl->socket->status == Ns_Dead) |
157 | |
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158 | if (update_look) |
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159 | esrv_draw_look (pl); |
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160 | |
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161 | if (ixface.empty ()) |
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162 | { |
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163 | // regularly send a new face when queue is empty |
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164 | if (bg_scrub && !--bg_scrub && enable_bg_scrub) |
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165 | while (scrub_idx < faces.size () - 1) |
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166 | { |
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167 | ++scrub_idx; |
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168 | |
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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) |
148 | { |
197 | { |
149 | save_player (pl->ob, 0); |
198 | ixsend &ix = ixface.back (); |
150 | |
199 | |
151 | if (!QUERY_FLAG (pl->ob, FLAG_REMOVED)) |
200 | if (facedata *d = face_data (ix.idx, faceset)) |
152 | { |
201 | { |
153 | terminate_all_pets (pl->ob); |
202 | if (fxix) |
154 | pl->ob->remove (); |
203 | { |
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204 | // only transfer something if the amount of data transferred |
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205 | // has a healthy relation to the header overhead |
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206 | if (avail <= 40) |
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207 | break; |
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208 | |
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209 | // 9 bytes is enough for fx_FFFOOO |
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210 | int chunk = min (min (avail, MAXSOCKBUF - 9), (int)ix.ofs); |
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211 | |
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212 | if (chunk <= 0) |
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213 | break; |
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214 | |
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215 | ix.ofs -= chunk; |
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216 | |
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217 | packet sl ("ix"); |
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218 | |
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219 | sl << ber32 (ix.idx) |
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220 | << ber32 (ix.ofs) |
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221 | << data (d->data.data () + ix.ofs, chunk); |
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222 | |
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223 | send_packet (sl); |
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224 | } |
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225 | else |
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226 | { |
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227 | send_image (ix.idx); |
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228 | ix.ofs = 0; |
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229 | } |
155 | } |
230 | } |
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231 | else |
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232 | ix.ofs = 0; |
156 | |
233 | |
157 | leave (pl, 1); |
234 | int consumed = outputbuffer_len () - ol; |
158 | final_free_player (pl); |
235 | |
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236 | avail -= consumed; |
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237 | rate_avail -= consumed; |
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238 | |
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239 | ol = outputbuffer_len (); |
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240 | |
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241 | if (!ix.ofs) |
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242 | { |
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243 | ixface.pop_back (); |
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244 | |
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245 | if (ixface.empty ()) |
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246 | break; |
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247 | } |
159 | } |
248 | } |
160 | |
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161 | pl = npl; |
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162 | } |
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163 | |
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164 | for (sockvec::iterator i = clients.begin (); i != clients.end (); ) |
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165 | { |
249 | } |
166 | client *s = *i; |
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167 | |
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168 | if (s->status == Ns_Dead) |
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169 | { |
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170 | clients.erase (i); |
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171 | delete s; |
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172 | } |
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173 | else |
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174 | ++i; |
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175 | } |
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176 | |
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177 | /* We need to do some of the processing below regardless */ |
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178 | |
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179 | /* Check for any input on the sockets */ |
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180 | for (sockvec::iterator i = clients.begin (); i != clients.end (); ++i) |
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181 | { |
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182 | client *s = *i; |
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183 | player *pl = s->pl; |
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184 | |
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185 | s->handle_packet (); |
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186 | s->handle_command (); |
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187 | |
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188 | //TODO: should not be done here, either |
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189 | if (s->status != Ns_Dead && pl) |
|
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190 | { |
|
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191 | /* Update the players stats once per tick. More efficient than |
|
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192 | * sending them whenever they change, and probably just as useful |
|
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193 | */ |
|
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194 | esrv_update_stats (pl); |
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195 | |
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196 | if (pl->last_weight != -1 && pl->last_weight != WEIGHT (pl->ob)) |
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197 | { |
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198 | esrv_update_item (UPD_WEIGHT, pl->ob, pl->ob); |
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199 | if (pl->last_weight != WEIGHT (pl->ob)) |
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200 | LOG (llevError, "esrv_update_item(UPD_WEIGHT) did not set player weight: is %lu, should be %lu\n", |
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201 | (unsigned long) pl->last_weight, WEIGHT (pl->ob)); |
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202 | } |
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203 | |
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204 | draw_client_map (pl->ob); |
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205 | |
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206 | if (s->update_look) |
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207 | esrv_draw_look (pl->ob); |
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208 | } |
|
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209 | } |
|
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210 | } |
250 | } |
211 | |
251 | |