server/socket/image.C

/*
 * This file is part of Deliantra, the Roguelike Realtime MMORPG.
 * 
 * Copyright (©) 2005,2006,2007,2008 Marc Alexander Lehmann / Robin Redeker / the Deliantra team
 * Copyright (©) 2001,2007 Mark Wedel
 * Copyright (©) 1992,2007 Frank Tore Johansen
 * 
 * Deliantra is free software: you can redistribute it and/or modify it under
 * the terms of the Affero GNU General Public License as published by the
 * Free Software Foundation, either version 3 of the License, or (at your
 * option) any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the Affero GNU General Public License
 * and the GNU General Public License along with this program. If not, see
 * <http://www.gnu.org/licenses/>.
 * 
 * The authors can be reached via e-mail to <support@deliantra.net>
 */

/** \file
 * Image related communication
 *
 *  \date 2003-12-02
 *
 * This file deals with the image related communication to the
 * client.  I've located all the functions in this file - this
 * localizes it more, and means that we don't need to declare
 * things like all the structures as globals.
 */

#include <global.h>
#include <sproto.h>

#include "crc.h"

#define MAX_IMAGE_SIZE 10000

/**
 * client requested an image. send it rate-limited
 * before flushing.
 */
void
AskFaceCmd (char *buf, int len, client *ns)
{
  int idx = 0, pri = 0;

  sscanf (buf, "%d %d", &idx, &pri);

  //TODO: somehow fetch default priority from send_fx here

  const facedata *d = face_data (idx, ns->faceset);

  if (!d)
    return; // doh

  client::ixsend ix;

  ix.pri = pri;
  ix.idx = idx;
  ix.ofs = d->data.size ();

  auto (pos, ns->ixface.end ());

  // the by far most common case will be to insert
  // near the end, so little looping.
  while (pos != ns->ixface.begin ())
    {
      --pos;

      // sort within 2k bins, to slightly prefer smaller images
      if (pri > pos->pri || (pri == pos->pri && (ix.ofs >> 11) <= (pos->ofs >> 11)))
        {
          ++pos;
          break;
        }
    }

  ns->ixface.insert (pos, ix);

#if 0
  for (auto (i, ns->ixface.begin ()); i != ns->ixface.end (); ++i)
    fprintf (stderr, "<%d,%d> ",  i->pri, i->ofs);
  fprintf (stderr, "\n");
#endif
}

/**
 * Sends a face to a client if they are in pixmap mode
 * nothing gets sent in bitmap mode. 
 * If nocache is true (nonzero), ignore the cache setting from the client -
 * this is needed for the askface, in which we really do want to send the
 * face (and askface is the only place that should be setting it).  Otherwise,
 * we look at the facecache, and if set, send the image name.
 */
void
client::send_face (faceidx facenum, int pri)
{
  // never send face 0. ever. it does not exist.
  if (!facenum)
    return;

  faceinfo *f = face_info (facenum);

  if (!f)
    {
      LOG (llevError | logBacktrace, "client::send_face (%d) out of bounds??\n", facenum);
      return;
    }

  // refuse to send non-image faces
  if (!fx_want [f->type])
    return;

  if (faces_sent [facenum])
    return;

  faces_sent[facenum] = true;

  fxface.push_back (facenum);
}

void client::flush_fx ()
{
  while (!fxface.empty ())
    {
      packet fx ("fx");
      packet sx ("sx");
      int type = 0;

      do
        {
          faceidx facenum = fxface.back (); fxface.pop_back ();

          if (const faceinfo *f = face_info (facenum))
            {
              if (f->type != type)
                {
                  type = f->type;

                  fx << ber32 (0)
                     << uint8 (1) << uint8 (type);
                }

              const facedata *d = f->data (faceset);

              fx << ber32 (facenum)
                 << data8 (d->chksum, CHKSUM_SIZE);

              if (smoothing)
                {
                  faceinfo *f = face_info (facenum);

                  if (f->smooth)
                    {
                      send_face (f->smooth, -110);

                      sx << ber32 (facenum)
                         << ber32 (f->smooth)
                         << ber32 (f->smoothlevel);
                    }
                }
            }
        }
      while (!fxface.empty ()
             && fx.room () > ber32::size + CHKSUM_SIZE + 1 + 3 /* type switch */
             && sx.room () > ber32::size * 3);

      send_packet (fx);
      if (sx.length () > 3) send_packet (sx);
    }
}

// send all faces of this object to the client
// this uses more bandwidth initially, but makes
// animations look much smoother, and every client
// is supposed to do client-side caching anyways.
void
client::send_faces (object *ob)
{
  send_face (ob->face, 10);

  if (ob->animation_id)
    {
      const animation &anim = ob->anim ();

      for (int i = 0; i < anim.num_animations; i++)
        send_face (anim.faces [i], -10);
    }
}

/**
 * Need to send an animation sequence to the client.
 * We will send appropriate face commands to the client if we haven't
 * sent them the face yet (this can become quite costly in terms of
 * how much we are sending - on the other hand, this should only happen
 * when the player logs in and picks stuff up.
 */
void
client::send_animation (short anim_num)
{
  /* Do some checking on the anim_num we got.  Note that the animations
   * are added in contiguous order, so if the number is in the valid
   * range, it must be a valid animation.
   */
  if (anim_num < 0 || anim_num >= animations.size ())
    {
      LOG (llevError, "esrv_send_anim (%d) out of bounds??\n", anim_num);
      return;
    }

  packet sl ("anim");

  sl << uint16 (anim_num)
     << uint16 (0); /* flags - not used right now */

  /* Build up the list of faces.  Also, send any information (ie, the
   * the face itself) down to the client.
   */
  for (int i = 0; i < animations[anim_num].num_animations; i++)
    {
      send_face (animations[anim_num].faces[i], -20);
      sl << uint16 (animations[anim_num].faces[i]);
    }

  send_packet (sl);

  anims_sent[anim_num] = 1;
}

Revision:	1.61
Committed:	Wed Nov 4 13:46:37 2009 UTC (16 years, 11 months ago) by root
Content type:	text/plain
Branch:	MAIN
CVS Tags:	rel-2_90
Changes since 1.60:	+2 -89 lines
Log Message:	* empty log message *
#	User	Rev	Content
1	elmex	1.1	/*
2	root	1.55	* This file is part of Deliantra, the Roguelike Realtime MMORPG.
3	root	1.42	*
4	root	1.56	* Copyright (©) 2005,2006,2007,2008 Marc Alexander Lehmann / Robin Redeker / the Deliantra team
5	root	1.42	* Copyright (©) 2001,2007 Mark Wedel
6			* Copyright (©) 1992,2007 Frank Tore Johansen
7			*
8	root	1.60	* Deliantra is free software: you can redistribute it and/or modify it under
9			* the terms of the Affero GNU General Public License as published by the
10			* Free Software Foundation, either version 3 of the License, or (at your
11			* option) any later version.
12	root	1.42	*
13	root	1.44	* 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	root	1.42	*
18	root	1.60	* You should have received a copy of the Affero GNU General Public License
19			* and the GNU General Public License along with this program. If not, see
20			* <http://www.gnu.org/licenses/>.
21	root	1.42	*
22	root	1.55	* The authors can be reached via e-mail to <support@deliantra.net>
23	root	1.17	*/
24	elmex	1.1
25			/** \file
26			* Image related communication
27			*
28			* \date 2003-12-02
29			*
30			* This file deals with the image related communication to the
31			* client. I've located all the functions in this file - this
32			* localizes it more, and means that we don't need to declare
33			* things like all the structures as globals.
34			*/
35
36			#include <global.h>
37			#include <sproto.h>
38
39	root	1.20	#include "crc.h"
40
41	elmex	1.1	#define MAX_IMAGE_SIZE 10000
42
43			/**
44	root	1.43	* client requested an image. send it rate-limited
45			* before flushing.
46	elmex	1.1	*/
47	root	1.3	void
48	root	1.43	AskFaceCmd (char buf, int len, client ns)
49	elmex	1.1	{
50	root	1.43	int idx = 0, pri = 0;
51
52			sscanf (buf, "%d %d", &idx, &pri);
53
54	root	1.51	//TODO: somehow fetch default priority from send_fx here
55
56	root	1.43	const facedata *d = face_data (idx, ns->faceset);
57
58			if (!d)
59			return; // doh
60
61			client::ixsend ix;
62
63			ix.pri = pri;
64			ix.idx = idx;
65			ix.ofs = d->data.size ();
66
67	root	1.46	auto (pos, ns->ixface.end ());
68
69	root	1.58	// the by far most common case will be to insert
70			// near the end, so little looping.
71			while (pos != ns->ixface.begin ())
72	root	1.46	{
73	root	1.58	--pos;
74
75			// sort within 2k bins, to slightly prefer smaller images
76			if (pri > pos->pri \|\| (pri == pos->pri && (ix.ofs >> 11) <= (pos->ofs >> 11)))
77	root	1.46	{
78	root	1.58	++pos;
79			break;
80	root	1.46	}
81			}
82
83			ns->ixface.insert (pos, ix);
84	root	1.45
85			#if 0
86	root	1.46	for (auto (i, ns->ixface.begin ()); i != ns->ixface.end (); ++i)
87			fprintf (stderr, "<%d,%d> ", i->pri, i->ofs);
88			fprintf (stderr, "\n");
89	root	1.45	#endif
90	root	1.43	}
91
92			/**
93	elmex	1.1	* Sends a face to a client if they are in pixmap mode
94			* nothing gets sent in bitmap mode.
95			* If nocache is true (nonzero), ignore the cache setting from the client -
96			* this is needed for the askface, in which we really do want to send the
97			* face (and askface is the only place that should be setting it). Otherwise,
98			* we look at the facecache, and if set, send the image name.
99			*/
100	root	1.3	void
101	root	1.50	client::send_face (faceidx facenum, int pri)
102	elmex	1.1	{
103	root	1.28	// never send face 0. ever. it does not exist.
104			if (!facenum)
105			return;
106
107	root	1.50	faceinfo *f = face_info (facenum);
108	root	1.28
109	root	1.50	if (!f)
110	root	1.3	{
111	root	1.54	LOG (llevError \| logBacktrace, "client::send_face (%d) out of bounds??\n", facenum);
112	root	1.3	return;
113			}
114
115	root	1.50	// refuse to send non-image faces
116			if (!fx_want [f->type])
117			return;
118	root	1.49
119	root	1.50	if (faces_sent [facenum])
120	root	1.48	return;
121
122	root	1.50	faces_sent[facenum] = true;
123	root	1.32
124	root	1.58	fxface.push_back (facenum);
125	root	1.32	}
126
127	root	1.39	void client::flush_fx ()
128			{
129			while (!fxface.empty ())
130			{
131	root	1.40	packet fx ("fx");
132			packet sx ("sx");
133	root	1.50	int type = 0;
134	root	1.39
135			do
136			{
137			faceidx facenum = fxface.back (); fxface.pop_back ();
138
139	root	1.50	if (const faceinfo *f = face_info (facenum))
140			{
141			if (f->type != type)
142			{
143			type = f->type;
144
145			fx << ber32 (0)
146			<< uint8 (1) << uint8 (type);
147			}
148
149			const facedata *d = f->data (faceset);
150	root	1.39
151	root	1.40	fx << ber32 (facenum)
152	root	1.39	<< data8 (d->chksum, CHKSUM_SIZE);
153
154	root	1.40	if (smoothing)
155			{
156			faceinfo *f = face_info (facenum);
157
158			if (f->smooth)
159			{
160	root	1.50	send_face (f->smooth, -110);
161
162	root	1.40	sx << ber32 (facenum)
163			<< ber32 (f->smooth)
164			<< ber32 (f->smoothlevel);
165			}
166			}
167	root	1.39	}
168			}
169	root	1.40	while (!fxface.empty ()
170	root	1.50	&& fx.room () > ber32::size + CHKSUM_SIZE + 1 + 3 /* type switch */
171	root	1.40	&& sx.room () > ber32::size * 3);
172	root	1.39
173	root	1.40	send_packet (fx);
174			if (sx.length () > 3) send_packet (sx);
175	root	1.39	}
176			}
177
178	root	1.28	// send all faces of this object to the client
179			// this uses more bandwidth initially, but makes
180			// animations look much smoother, and every client
181			// is supposed to do client-side caching anyways.
182			void
183			client::send_faces (object *ob)
184			{
185	root	1.50	send_face (ob->face, 10);
186	root	1.28
187			if (ob->animation_id)
188			{
189	root	1.59	const animation &anim = ob->anim ();
190	root	1.28
191			for (int i = 0; i < anim.num_animations; i++)
192	root	1.50	send_face (anim.faces [i], -10);
193	root	1.28	}
194			}
195
196			/**
197			* Need to send an animation sequence to the client.
198			* We will send appropriate face commands to the client if we haven't
199			* sent them the face yet (this can become quite costly in terms of
200			* how much we are sending - on the other hand, this should only happen
201			* when the player logs in and picks stuff up.
202			*/
203			void
204			client::send_animation (short anim_num)
205			{
206			/* Do some checking on the anim_num we got. Note that the animations
207	root	1.61	* are added in contiguous order, so if the number is in the valid
208	root	1.28	* range, it must be a valid animation.
209			*/
210	root	1.41	if (anim_num < 0 \|\| anim_num >= animations.size ())
211	root	1.28	{
212			LOG (llevError, "esrv_send_anim (%d) out of bounds??\n", anim_num);
213			return;
214			}
215
216			packet sl ("anim");
217
218			sl << uint16 (anim_num)
219			<< uint16 (0); /* flags - not used right now */
220
221			/* Build up the list of faces. Also, send any information (ie, the
222			* the face itself) down to the client.
223			*/
224			for (int i = 0; i < animations[anim_num].num_animations; i++)
225			{
226	root	1.50	send_face (animations[anim_num].faces[i], -20);
227	root	1.61	sl << uint16 (animations[anim_num].faces[i]);
228	elmex	1.1	}
229	root	1.6
230	root	1.28	send_packet (sl);
231
232			anims_sent[anim_num] = 1;
233	elmex	1.1	}
234