1 |
elmex |
1.1 |
/* |
2 |
root |
1.55 |
* This file is part of Crossfire TRT, the Roguelike Realtime MORPG. |
3 |
pippijn |
1.39 |
* |
4 |
root |
1.49 |
* Copyright (©) 2005,2006,2007 Marc Alexander Lehmann / Robin Redeker / the Crossfire TRT team |
5 |
|
|
* Copyright (©) 2002-2003,2007 Mark Wedel & The Crossfire Development Team |
6 |
|
|
* Copyright (©) 1992,2007 Frank Tore Johansen |
7 |
|
|
* |
8 |
root |
1.55 |
* Crossfire TRT is free software: you can redistribute it and/or modify |
9 |
|
|
* it under the terms of the GNU General Public License as published by |
10 |
|
|
* the Free Software Foundation, either version 3 of the License, or |
11 |
|
|
* (at your option) any later version. |
12 |
|
|
* |
13 |
|
|
* This program is distributed in the hope that it will be useful, |
14 |
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of |
15 |
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
16 |
|
|
* GNU General Public License for more details. |
17 |
|
|
* |
18 |
|
|
* You should have received a copy of the GNU General Public License |
19 |
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>. |
20 |
root |
1.49 |
* |
21 |
|
|
* The authors can be reached via e-mail to <crossfire@schmorp.de> |
22 |
pippijn |
1.39 |
*/ |
23 |
elmex |
1.1 |
|
24 |
|
|
/** |
25 |
|
|
* \file |
26 |
|
|
* Main client/server loops. |
27 |
|
|
* |
28 |
|
|
* \date 2003-12-02 |
29 |
|
|
* |
30 |
|
|
* loop.c mainly deals with initialization and higher level socket |
31 |
root |
1.26 |
* maintanance (checking for lost connections and if data has arrived.) |
32 |
elmex |
1.1 |
*/ |
33 |
|
|
|
34 |
|
|
#include <global.h> |
35 |
root |
1.10 |
#include <sproto.h> |
36 |
|
|
#include <sockproto.h> |
37 |
elmex |
1.1 |
|
38 |
pippijn |
1.8 |
#include <sys/types.h> |
39 |
|
|
#include <sys/time.h> |
40 |
|
|
#include <sys/socket.h> |
41 |
|
|
#include <netinet/in.h> |
42 |
|
|
#include <netdb.h> |
43 |
elmex |
1.1 |
|
44 |
root |
1.16 |
#include <unistd.h> |
45 |
|
|
#include <arpa/inet.h> |
46 |
elmex |
1.1 |
|
47 |
|
|
#include <loader.h> |
48 |
|
|
|
49 |
root |
1.51 |
#define BG_SCRUB_RATE 4 // how often to send a face in the background |
50 |
|
|
|
51 |
|
|
#define MAX_QUEUE_DEPTH 500 |
52 |
|
|
#define MAX_QUEUE_BACKLOG 3. |
53 |
elmex |
1.1 |
|
54 |
root |
1.21 |
void |
55 |
|
|
client::reset_state () |
56 |
|
|
{ |
57 |
|
|
if (!pl) |
58 |
|
|
return; |
59 |
|
|
|
60 |
|
|
pl->run_on = 0; |
61 |
|
|
pl->fire_on = 0; |
62 |
|
|
} |
63 |
elmex |
1.1 |
|
64 |
root |
1.20 |
void |
65 |
|
|
client::queue_command (packet_type *handler, char *data, int datalen) |
66 |
root |
1.6 |
{ |
67 |
root |
1.51 |
tstamp stamp = NOW; |
68 |
elmex |
1.1 |
|
69 |
root |
1.20 |
if (cmd_queue.size () >= MAX_QUEUE_DEPTH) |
70 |
root |
1.21 |
{ |
71 |
|
|
//TODO: just disconnect here? |
72 |
|
|
reset_state (); |
73 |
|
|
send_packet_printf ("drawinfo %d command queue overflow, ignoring.", NDI_RED); |
74 |
|
|
} |
75 |
root |
1.20 |
else |
76 |
root |
1.24 |
{ |
77 |
|
|
cmd_queue.push_back (command ()); |
78 |
|
|
command &cmd = cmd_queue.back (); |
79 |
|
|
cmd.stamp = stamp; |
80 |
|
|
cmd.handler = handler; |
81 |
root |
1.25 |
cmd.data = salloc<char> (datalen + 1, data); |
82 |
root |
1.24 |
cmd.datalen = datalen; |
83 |
|
|
} |
84 |
root |
1.20 |
} |
85 |
elmex |
1.1 |
|
86 |
root |
1.20 |
bool |
87 |
|
|
client::handle_command () |
88 |
elmex |
1.1 |
{ |
89 |
root |
1.48 |
if (!cmd_queue.empty () |
90 |
|
|
&& state == ST_PLAYING |
91 |
|
|
&& pl->ob->speed_left > 0.f) |
92 |
root |
1.26 |
{ |
93 |
|
|
command &cmd = cmd_queue.front (); |
94 |
root |
1.6 |
|
95 |
root |
1.51 |
if (cmd.stamp + MAX_QUEUE_BACKLOG < NOW) |
96 |
root |
1.26 |
{ |
97 |
root |
1.48 |
reset_state (); |
98 |
|
|
send_packet_printf ("drawinfo %d ignoring delayed commands.", NDI_RED); |
99 |
root |
1.26 |
} |
100 |
|
|
else |
101 |
root |
1.48 |
execute (cmd.handler, cmd.data, cmd.datalen); |
102 |
|
|
|
103 |
|
|
cmd_queue.pop_front (); |
104 |
|
|
return true; |
105 |
root |
1.21 |
} |
106 |
root |
1.48 |
else |
107 |
|
|
return false; |
108 |
elmex |
1.1 |
} |
109 |
|
|
|
110 |
root |
1.6 |
void |
111 |
|
|
flush_sockets (void) |
112 |
elmex |
1.1 |
{ |
113 |
root |
1.19 |
for (sockvec::iterator i = clients.begin (); i != clients.end (); ++i) |
114 |
root |
1.31 |
(*i)->flush (); |
115 |
elmex |
1.1 |
} |
116 |
|
|
|
117 |
|
|
/** |
118 |
root |
1.10 |
* This checks the sockets for input, does the right thing. |
119 |
elmex |
1.1 |
* |
120 |
|
|
* A bit of this code is grabbed out of socket.c |
121 |
|
|
* There are 2 lists we need to look through - init_sockets is a list |
122 |
|
|
* |
123 |
|
|
*/ |
124 |
root |
1.6 |
void |
125 |
|
|
doeric_server (void) |
126 |
elmex |
1.1 |
{ |
127 |
root |
1.33 |
//TODO: should not be done here, either |
128 |
pippijn |
1.40 |
for (unsigned i = 0; i < clients.size (); ++i) |
129 |
root |
1.6 |
{ |
130 |
root |
1.42 |
client *ns = clients [i]; |
131 |
elmex |
1.1 |
|
132 |
root |
1.42 |
ns->tick (); |
133 |
|
|
ns->refcnt_chk (); |
134 |
|
|
} |
135 |
|
|
} |
136 |
|
|
|
137 |
|
|
void |
138 |
|
|
client::tick () |
139 |
|
|
{ |
140 |
|
|
if (!pl || destroyed ()) |
141 |
|
|
return; |
142 |
root |
1.37 |
|
143 |
root |
1.42 |
/* Update the players stats once per tick. More efficient than |
144 |
|
|
* sending them whenever they change, and probably just as useful |
145 |
|
|
*/ |
146 |
|
|
esrv_update_stats (pl); |
147 |
root |
1.20 |
|
148 |
root |
1.42 |
if (last_weight != -1 && last_weight != WEIGHT (pl->ob)) |
149 |
|
|
{ |
150 |
|
|
esrv_update_item (UPD_WEIGHT, pl->ob, pl->ob); |
151 |
|
|
if (last_weight != WEIGHT (pl->ob)) |
152 |
|
|
LOG (llevError, "esrv_update_item(UPD_WEIGHT) did not set player weight: is %lu, should be %lu\n", |
153 |
|
|
(unsigned long) last_weight, WEIGHT (pl->ob)); |
154 |
|
|
} |
155 |
root |
1.6 |
|
156 |
root |
1.50 |
draw_client_map (pl); |
157 |
root |
1.20 |
|
158 |
root |
1.42 |
if (update_look) |
159 |
root |
1.50 |
esrv_draw_look (pl); |
160 |
root |
1.41 |
|
161 |
root |
1.54 |
if (ixface.empty ()) |
162 |
root |
1.42 |
{ |
163 |
root |
1.44 |
// regularly send a new face when queue is empty |
164 |
root |
1.43 |
if (bg_scrub && !--bg_scrub && enable_bg_scrub) |
165 |
root |
1.42 |
while (scrub_idx < faces.size () - 1) |
166 |
|
|
{ |
167 |
|
|
++scrub_idx; |
168 |
root |
1.54 |
|
169 |
root |
1.42 |
if (!faces_sent [scrub_idx]) |
170 |
|
|
{ |
171 |
root |
1.61 |
send_face (scrub_idx, -120); |
172 |
root |
1.45 |
flush_fx (); |
173 |
|
|
|
174 |
root |
1.42 |
bg_scrub = 1; // send up to one face per tick, unless an image was requested |
175 |
|
|
break; |
176 |
|
|
} |
177 |
|
|
} |
178 |
root |
1.44 |
|
179 |
|
|
rate_avail = max_rate - outputbuffer_len (); |
180 |
root |
1.42 |
} |
181 |
root |
1.61 |
else if (!outq) // only send when bandwidth allows it |
182 |
root |
1.44 |
{ |
183 |
|
|
int ol = outputbuffer_len (); |
184 |
|
|
|
185 |
|
|
rate_avail = min (max_rate, rate_avail + max_rate); |
186 |
|
|
rate_avail -= ol; |
187 |
|
|
|
188 |
|
|
int avail = rate_avail; |
189 |
root |
1.46 |
|
190 |
root |
1.53 |
// if we can split images, transfer up to mss-sized packets if possible |
191 |
root |
1.52 |
// but never 768 bytes more. |
192 |
root |
1.46 |
if (fxix) avail += min (768, mss - (ol % mss)); |
193 |
root |
1.44 |
|
194 |
root |
1.46 |
bg_scrub = BG_SCRUB_RATE; |
195 |
|
|
|
196 |
|
|
while (avail > 0) |
197 |
root |
1.44 |
{ |
198 |
root |
1.54 |
ixsend &ix = ixface.back (); |
199 |
|
|
|
200 |
|
|
if (facedata *d = face_data (ix.idx, faceset)) |
201 |
root |
1.46 |
{ |
202 |
root |
1.54 |
if (fxix) |
203 |
root |
1.46 |
{ |
204 |
root |
1.58 |
// only transfer something if the amount of data transferred |
205 |
|
|
// has a healthy relation to the header overhead |
206 |
|
|
if (avail <= 40) |
207 |
|
|
break; |
208 |
|
|
|
209 |
|
|
// 9 bytes is enough for fx_FFFOOO |
210 |
|
|
int chunk = min (min (avail, MAXSOCKBUF - 9), (int)ix.ofs); |
211 |
root |
1.46 |
|
212 |
|
|
if (chunk <= 0) |
213 |
|
|
break; |
214 |
|
|
|
215 |
root |
1.54 |
ix.ofs -= chunk; |
216 |
root |
1.46 |
|
217 |
root |
1.59 |
//fprintf (stderr, "i%dx %6d: %5d+%4d (%4d)\n", fxix, ix.idx,ix.ofs,chunk, ixface.size());//D |
218 |
|
|
|
219 |
root |
1.46 |
packet sl ("ix"); |
220 |
|
|
|
221 |
root |
1.54 |
sl << ber32 (ix.idx) |
222 |
|
|
<< ber32 (ix.ofs) |
223 |
|
|
<< data (d->data.data () + ix.ofs, chunk); |
224 |
root |
1.46 |
|
225 |
|
|
send_packet (sl); |
226 |
|
|
} |
227 |
|
|
else |
228 |
|
|
{ |
229 |
root |
1.54 |
send_image (ix.idx); |
230 |
|
|
ix.ofs = 0; |
231 |
root |
1.46 |
} |
232 |
root |
1.45 |
} |
233 |
|
|
else |
234 |
root |
1.54 |
ix.ofs = 0; |
235 |
root |
1.44 |
|
236 |
root |
1.56 |
int consumed = outputbuffer_len () - ol; |
237 |
root |
1.54 |
|
238 |
root |
1.44 |
avail -= consumed; |
239 |
|
|
rate_avail -= consumed; |
240 |
root |
1.54 |
|
241 |
|
|
ol = outputbuffer_len (); |
242 |
|
|
|
243 |
|
|
if (!ix.ofs) |
244 |
|
|
{ |
245 |
|
|
ixface.pop_back (); |
246 |
root |
1.56 |
|
247 |
root |
1.54 |
if (ixface.empty ()) |
248 |
|
|
break; |
249 |
|
|
} |
250 |
root |
1.44 |
} |
251 |
|
|
} |
252 |
elmex |
1.1 |
} |
253 |
root |
1.43 |
|