1 |
elmex |
1.1 |
/* |
2 |
root |
1.17 |
* CrossFire, A Multiplayer game |
3 |
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* |
4 |
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* Copyright (C) 2005, 2006, 2007 Marc Lehmann & Crossfire+ Development Team |
5 |
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* Copyright (C) 2001 Mark Wedel |
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* Copyright (C) 1992 Frank Tore Johansen |
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* |
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* This program is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation; either version 2 of the License, or |
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* (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
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* |
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* The author can be reached via e-mail to <crossfire@schmorp.de> |
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*/ |
24 |
elmex |
1.1 |
|
25 |
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/** \file |
26 |
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* Image related communication |
27 |
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* |
28 |
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* \date 2003-12-02 |
29 |
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* |
30 |
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* This file deals with the image related communication to the |
31 |
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* client. I've located all the functions in this file - this |
32 |
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* localizes it more, and means that we don't need to declare |
33 |
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* things like all the structures as globals. |
34 |
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*/ |
35 |
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36 |
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#include <global.h> |
37 |
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#include <sproto.h> |
38 |
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|
39 |
root |
1.20 |
#include "crc.h" |
40 |
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|
41 |
elmex |
1.1 |
#define MAX_FACE_SETS 20 /**< Maximum number of image sets the program will handle */ |
42 |
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43 |
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/** Information about one image */ |
44 |
root |
1.3 |
typedef struct FaceInfo |
45 |
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{ |
46 |
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uint8 *data; /**< image data */ |
47 |
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uint16 datalen; /**< length of the xpm data */ |
48 |
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uint32 checksum; /**< Checksum of face data */ |
49 |
elmex |
1.1 |
} FaceInfo; |
50 |
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|
51 |
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/** Information about one face set */ |
52 |
root |
1.3 |
typedef struct |
53 |
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{ |
54 |
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char *prefix; /**< */ |
55 |
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char *fullname; |
56 |
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57 |
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uint8 fallback; /**< faceset to use when an image is not found in this faceset */ |
58 |
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char *size; |
59 |
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char *extension; |
60 |
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char *comment; |
61 |
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62 |
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FaceInfo *faces; /**< images in this faceset */ |
63 |
elmex |
1.1 |
} FaceSets; |
64 |
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65 |
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static FaceSets facesets[MAX_FACE_SETS]; /**< All facesets */ |
66 |
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67 |
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/** |
68 |
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* Checks specified faceset is valid |
69 |
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* \param fsn faceset number |
70 |
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*/ |
71 |
root |
1.3 |
int |
72 |
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is_valid_faceset (int fsn) |
73 |
elmex |
1.1 |
{ |
74 |
root |
1.3 |
if (fsn >= 0 && fsn < MAX_FACE_SETS && facesets[fsn].prefix) |
75 |
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return TRUE; |
76 |
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return FALSE; |
77 |
elmex |
1.1 |
} |
78 |
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|
79 |
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/** |
80 |
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* Frees all faceset information |
81 |
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*/ |
82 |
root |
1.3 |
void |
83 |
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free_socket_images (void) |
84 |
elmex |
1.1 |
{ |
85 |
root |
1.3 |
int num, q; |
86 |
elmex |
1.1 |
|
87 |
root |
1.3 |
for (num = 0; num < MAX_FACE_SETS; num++) |
88 |
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{ |
89 |
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if (facesets[num].prefix) |
90 |
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{ |
91 |
root |
1.24 |
for (q = 0; q < faces.size (); q++) |
92 |
root |
1.3 |
if (facesets[num].faces[q].data) |
93 |
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free (facesets[num].faces[q].data); |
94 |
root |
1.15 |
|
95 |
root |
1.3 |
free (facesets[num].prefix); |
96 |
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free (facesets[num].fullname); |
97 |
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free (facesets[num].size); |
98 |
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free (facesets[num].extension); |
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free (facesets[num].comment); |
100 |
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free (facesets[num].faces); |
101 |
root |
1.2 |
} |
102 |
elmex |
1.1 |
} |
103 |
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} |
104 |
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105 |
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/** |
106 |
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* This returns the set we will actually use when sending |
107 |
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* a face. This is used because the image files may be sparse. |
108 |
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* This function is recursive. imageno is the face number we are |
109 |
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* trying to send |
110 |
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* |
111 |
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* If face is not found in specified faceset, tries with 'fallback' faceset. |
112 |
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* |
113 |
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* \param faceset faceset to check |
114 |
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* \param imageno image number |
115 |
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* |
116 |
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*/ |
117 |
root |
1.3 |
static int |
118 |
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get_face_fallback (int faceset, int imageno) |
119 |
elmex |
1.1 |
{ |
120 |
root |
1.3 |
/* faceset 0 is supposed to have every image, so just return. Doing |
121 |
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* so also prevents infinite loops in the case if it not having |
122 |
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* the face, but in that case, we are likely to crash when we try |
123 |
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* to access the data, but that is probably preferable to an infinite |
124 |
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* loop. |
125 |
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*/ |
126 |
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if (faceset == 0) |
127 |
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return 0; |
128 |
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129 |
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if (!facesets[faceset].prefix) |
130 |
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{ |
131 |
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LOG (llevError, "get_face_fallback called with unused set (%d)?\n", faceset); |
132 |
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return 0; /* use default set */ |
133 |
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} |
134 |
root |
1.15 |
|
135 |
root |
1.3 |
if (facesets[faceset].faces[imageno].data) |
136 |
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return faceset; |
137 |
root |
1.15 |
|
138 |
root |
1.3 |
return get_face_fallback (facesets[faceset].fallback, imageno); |
139 |
elmex |
1.1 |
} |
140 |
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141 |
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/** |
142 |
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* Checks fallback are correctly defined. |
143 |
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* This is a simple recursive function that makes sure the fallbacks |
144 |
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* are all proper (eg, the fall back to defined sets, and also |
145 |
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* eventually fall back to 0). At the top level, togo is set to MAX_FACE_SETS, |
146 |
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* if togo gets to zero, it means we have a loop. |
147 |
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* This is only run when we first load the facesets. |
148 |
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*/ |
149 |
root |
1.3 |
static void |
150 |
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check_faceset_fallback (int faceset, int togo) |
151 |
elmex |
1.1 |
{ |
152 |
root |
1.3 |
int fallback = facesets[faceset].fallback; |
153 |
elmex |
1.1 |
|
154 |
root |
1.3 |
/* proper case - falls back to base set */ |
155 |
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if (fallback == 0) |
156 |
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return; |
157 |
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158 |
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if (!facesets[fallback].prefix) |
159 |
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{ |
160 |
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LOG (llevError, "Face set %d falls to non set faceset %d\n", faceset, fallback); |
161 |
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abort (); |
162 |
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} |
163 |
root |
1.15 |
|
164 |
root |
1.3 |
togo--; |
165 |
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if (togo == 0) |
166 |
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{ |
167 |
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LOG (llevError, "Infinite loop found in facesets. aborting.\n"); |
168 |
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abort (); |
169 |
elmex |
1.1 |
} |
170 |
root |
1.15 |
|
171 |
root |
1.3 |
check_faceset_fallback (fallback, togo); |
172 |
elmex |
1.1 |
} |
173 |
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174 |
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#define MAX_IMAGE_SIZE 10000 |
175 |
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176 |
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/** |
177 |
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* Client tells us what type of faces it wants. Also sets |
178 |
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* the caching attribute. |
179 |
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* |
180 |
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*/ |
181 |
root |
1.3 |
void |
182 |
root |
1.13 |
SetFaceMode (char *buf, int len, client *ns) |
183 |
elmex |
1.1 |
{ |
184 |
root |
1.3 |
int mask = (atoi (buf) & CF_FACE_CACHE), mode = (atoi (buf) & ~CF_FACE_CACHE); |
185 |
elmex |
1.1 |
|
186 |
root |
1.3 |
if (mode == CF_FACE_NONE) |
187 |
root |
1.7 |
ns->facecache = 1; |
188 |
root |
1.3 |
else if (mode != CF_FACE_PNG) |
189 |
root |
1.14 |
ns->send_packet_printf ("drawinfo %d %s", NDI_RED, "Warning - send unsupported face mode. Will use Png"); |
190 |
root |
1.7 |
|
191 |
root |
1.3 |
if (mask) |
192 |
root |
1.7 |
ns->facecache = 1; |
193 |
elmex |
1.1 |
} |
194 |
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|
195 |
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/** |
196 |
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* Client has requested pixmap that it somehow missed getting. |
197 |
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* This will be called often if the client is |
198 |
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* caching images. |
199 |
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*/ |
200 |
root |
1.3 |
void |
201 |
root |
1.15 |
SendFaceCmd (char *buf, int len, client *ns) |
202 |
elmex |
1.1 |
{ |
203 |
root |
1.32 |
ns->send_image (atoi (buf)); |
204 |
elmex |
1.1 |
} |
205 |
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206 |
root |
1.24 |
// how lame |
207 |
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static void print_facename (packet &sl, const facedata &d) |
208 |
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{ |
209 |
root |
1.25 |
for (int i = 0; i < CHKSUM_SIZE; ++i) |
210 |
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sl.printf ("%02x", d.chksum [i]); |
211 |
root |
1.24 |
} |
212 |
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213 |
root |
1.32 |
// gcfclient uses the server-provided checksum for comparison, but always |
214 |
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// writes a broken checksum to its cache file, so we have to provide |
215 |
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// gcfclient with the same broken (and useless) checksum just to have it |
216 |
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// cache the image despite its bugs. |
217 |
root |
1.26 |
static uint32 gcfclient_checksum (const facedata *d) |
218 |
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{ |
219 |
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uint32 csum = 0; |
220 |
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221 |
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for (std::string::const_iterator i = d->data.begin (); |
222 |
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i != d->data.end (); |
223 |
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++i) |
224 |
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{ |
225 |
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csum = rotate_right (csum); |
226 |
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csum += *(uint8 *)&*i; |
227 |
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} |
228 |
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229 |
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return csum; |
230 |
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} |
231 |
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|
232 |
elmex |
1.1 |
/** |
233 |
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* Sends a face to a client if they are in pixmap mode |
234 |
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* nothing gets sent in bitmap mode. |
235 |
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* If nocache is true (nonzero), ignore the cache setting from the client - |
236 |
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* this is needed for the askface, in which we really do want to send the |
237 |
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* face (and askface is the only place that should be setting it). Otherwise, |
238 |
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* we look at the facecache, and if set, send the image name. |
239 |
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*/ |
240 |
root |
1.3 |
void |
241 |
root |
1.32 |
client::send_face (faceidx facenum) |
242 |
elmex |
1.1 |
{ |
243 |
root |
1.28 |
// never send face 0. ever. it does not exist. |
244 |
|
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if (!facenum) |
245 |
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return; |
246 |
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|
247 |
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const facedata *d = face_data (facenum, faceset); |
248 |
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|
249 |
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if (!d) |
250 |
root |
1.3 |
{ |
251 |
root |
1.28 |
LOG (llevError, "client::send_face (%d) out of bounds??\n", facenum); |
252 |
root |
1.3 |
return; |
253 |
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} |
254 |
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|
255 |
root |
1.32 |
if (faces_sent[facenum]) |
256 |
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return; |
257 |
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258 |
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faces_sent[facenum] = true; |
259 |
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|
260 |
root |
1.38 |
// if for some reason we let a client without face caching connect, |
261 |
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// we better support that decision here and implement it. |
262 |
root |
1.33 |
if (!facecache) |
263 |
root |
1.38 |
return send_image (facenum); |
264 |
root |
1.33 |
|
265 |
root |
1.39 |
if (fxix) |
266 |
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{ |
267 |
|
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fxface.push_back (facenum); |
268 |
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return; |
269 |
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} |
270 |
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|
271 |
root |
1.8 |
packet sl; |
272 |
root |
1.3 |
|
273 |
root |
1.32 |
if (force_face0) |
274 |
|
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sl << "face " << uint16 (facenum); |
275 |
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else if (image2) |
276 |
|
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sl << "face2 " << uint16 (facenum) << uint8 (0) << uint32 (force_bad_checksum ? gcfclient_checksum (d) : 0); |
277 |
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else |
278 |
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sl << "face1 " << uint16 (facenum) << uint32 (force_bad_checksum ? gcfclient_checksum (d) : 0); |
279 |
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|
280 |
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// how lame |
281 |
|
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print_facename (sl, *d); |
282 |
|
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send_packet (sl); |
283 |
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|
284 |
root |
1.40 |
if (EMI_smooth) |
285 |
root |
1.3 |
{ |
286 |
root |
1.40 |
faceinfo *f = face_info (facenum); |
287 |
root |
1.28 |
|
288 |
root |
1.40 |
if (f->smooth) |
289 |
|
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{ |
290 |
|
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send_face (f->smooth); |
291 |
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|
292 |
|
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packet sl ("smooth"); |
293 |
root |
1.30 |
|
294 |
root |
1.40 |
sl << uint16 (facenum) |
295 |
|
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<< uint16 (f->smooth); |
296 |
root |
1.31 |
|
297 |
root |
1.40 |
send_packet (sl); |
298 |
|
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} |
299 |
root |
1.32 |
} |
300 |
|
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} |
301 |
|
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|
302 |
root |
1.39 |
void client::flush_fx () |
303 |
|
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{ |
304 |
|
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while (!fxface.empty ()) |
305 |
|
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{ |
306 |
root |
1.40 |
packet fx ("fx"); |
307 |
|
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packet sx ("sx"); |
308 |
root |
1.39 |
|
309 |
|
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do |
310 |
|
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{ |
311 |
|
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faceidx facenum = fxface.back (); fxface.pop_back (); |
312 |
|
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|
313 |
|
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const facedata *d = face_data (facenum, faceset); |
314 |
|
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|
315 |
|
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if (d) |
316 |
|
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{ |
317 |
root |
1.40 |
fx << ber32 (facenum) |
318 |
root |
1.39 |
<< data8 (d->chksum, CHKSUM_SIZE); |
319 |
|
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|
320 |
root |
1.40 |
if (smoothing) |
321 |
|
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{ |
322 |
|
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faceinfo *f = face_info (facenum); |
323 |
|
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|
324 |
|
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if (f->smooth) |
325 |
|
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{ |
326 |
|
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send_face (f->smooth); |
327 |
|
|
sx << ber32 (facenum) |
328 |
|
|
<< ber32 (f->smooth) |
329 |
|
|
<< ber32 (f->smoothlevel); |
330 |
|
|
} |
331 |
|
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} |
332 |
root |
1.39 |
} |
333 |
|
|
} |
334 |
root |
1.40 |
while (!fxface.empty () |
335 |
|
|
&& fx.room () > ber32::size + CHKSUM_SIZE + 1 |
336 |
|
|
&& sx.room () > ber32::size * 3); |
337 |
root |
1.39 |
|
338 |
root |
1.40 |
send_packet (fx); |
339 |
|
|
if (sx.length () > 3) send_packet (sx); |
340 |
root |
1.39 |
} |
341 |
|
|
} |
342 |
|
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|
343 |
root |
1.32 |
void |
344 |
|
|
client::send_image (faceidx facenum) |
345 |
|
|
{ |
346 |
|
|
// never send face 0. ever. it does not exist. |
347 |
|
|
if (!facenum) |
348 |
|
|
return; |
349 |
root |
1.31 |
|
350 |
root |
1.32 |
const facedata *d = face_data (facenum, faceset); |
351 |
root |
1.30 |
|
352 |
root |
1.32 |
if (!d) |
353 |
|
|
{ |
354 |
|
|
LOG (llevError, "client::send_image (%d) out of bounds??\n", facenum); |
355 |
|
|
return; |
356 |
|
|
} |
357 |
root |
1.30 |
|
358 |
root |
1.34 |
faces_sent[facenum] = true; |
359 |
|
|
|
360 |
root |
1.36 |
if (force_image_newmap) |
361 |
|
|
force_newmap = true; |
362 |
|
|
|
363 |
root |
1.32 |
packet sl; |
364 |
root |
1.30 |
|
365 |
root |
1.32 |
sl << (image2 ? "image2 " : "image ") |
366 |
|
|
<< uint32 (facenum); |
367 |
root |
1.6 |
|
368 |
root |
1.32 |
if (image2) |
369 |
|
|
sl << uint8 (0); |
370 |
root |
1.6 |
|
371 |
root |
1.32 |
sl << uint32 (d->data.size ()) |
372 |
|
|
<< data (d->data.data (), d->data.size ()); |
373 |
root |
1.31 |
|
374 |
root |
1.32 |
send_packet (sl); |
375 |
root |
1.28 |
} |
376 |
|
|
|
377 |
|
|
// send all faces of this object to the client |
378 |
|
|
// this uses more bandwidth initially, but makes |
379 |
|
|
// animations look much smoother, and every client |
380 |
|
|
// is supposed to do client-side caching anyways. |
381 |
|
|
void |
382 |
|
|
client::send_faces (object *ob) |
383 |
|
|
{ |
384 |
|
|
send_face (ob->face); |
385 |
|
|
|
386 |
|
|
if (ob->animation_id) |
387 |
|
|
{ |
388 |
|
|
animation &anim = animations [ob->animation_id]; |
389 |
|
|
|
390 |
|
|
for (int i = 0; i < anim.num_animations; i++) |
391 |
|
|
send_face (anim.faces [i]); |
392 |
|
|
} |
393 |
|
|
} |
394 |
|
|
|
395 |
|
|
/** |
396 |
|
|
* Need to send an animation sequence to the client. |
397 |
|
|
* We will send appropriate face commands to the client if we haven't |
398 |
|
|
* sent them the face yet (this can become quite costly in terms of |
399 |
|
|
* how much we are sending - on the other hand, this should only happen |
400 |
|
|
* when the player logs in and picks stuff up. |
401 |
|
|
*/ |
402 |
|
|
void |
403 |
|
|
client::send_animation (short anim_num) |
404 |
|
|
{ |
405 |
|
|
/* Do some checking on the anim_num we got. Note that the animations |
406 |
|
|
* are added in contigous order, so if the number is in the valid |
407 |
|
|
* range, it must be a valid animation. |
408 |
|
|
*/ |
409 |
root |
1.41 |
if (anim_num < 0 || anim_num >= animations.size ()) |
410 |
root |
1.28 |
{ |
411 |
|
|
LOG (llevError, "esrv_send_anim (%d) out of bounds??\n", anim_num); |
412 |
|
|
return; |
413 |
|
|
} |
414 |
|
|
|
415 |
|
|
packet sl ("anim"); |
416 |
|
|
|
417 |
|
|
sl << uint16 (anim_num) |
418 |
|
|
<< uint16 (0); /* flags - not used right now */ |
419 |
|
|
|
420 |
|
|
/* Build up the list of faces. Also, send any information (ie, the |
421 |
|
|
* the face itself) down to the client. |
422 |
|
|
*/ |
423 |
|
|
for (int i = 0; i < animations[anim_num].num_animations; i++) |
424 |
|
|
{ |
425 |
|
|
send_face (animations[anim_num].faces[i]); |
426 |
|
|
sl << uint16 (animations[anim_num].faces[i]); /* flags - not used right now */ |
427 |
elmex |
1.1 |
} |
428 |
root |
1.6 |
|
429 |
root |
1.28 |
send_packet (sl); |
430 |
|
|
|
431 |
|
|
anims_sent[anim_num] = 1; |
432 |
elmex |
1.1 |
} |
433 |
|
|
|
434 |
|
|
/** |
435 |
|
|
* Sends the number of images, checksum of the face file, |
436 |
|
|
* and the image_info file information. See the doc/Developers/protocol |
437 |
|
|
* if you want further detail. |
438 |
|
|
*/ |
439 |
root |
1.3 |
void |
440 |
root |
1.15 |
send_image_info (client *ns, char *params) |
441 |
elmex |
1.1 |
{ |
442 |
root |
1.8 |
packet sl; |
443 |
elmex |
1.1 |
|
444 |
root |
1.24 |
//TODO: second parameter is a checksum, but it makes no sense in this current framework |
445 |
|
|
sl.printf ("replyinfo image_info\n%d\n%u\n", MAX_FACES, 0); |
446 |
root |
1.6 |
|
447 |
root |
1.24 |
sl << "0:base:standard:0:32x32:none:The old 32x32 faceset.\n"; |
448 |
elmex |
1.1 |
|
449 |
root |
1.11 |
ns->send_packet (sl); |
450 |
elmex |
1.1 |
} |
451 |
|
|
|
452 |
|
|
/** |
453 |
|
|
* Sends requested face information. |
454 |
|
|
* \param ns socket to send to |
455 |
|
|
* \param params contains first and last index of face |
456 |
|
|
* |
457 |
|
|
* For each image in [start..stop] sends |
458 |
|
|
* - checksum |
459 |
|
|
* - name |
460 |
|
|
*/ |
461 |
root |
1.3 |
void |
462 |
root |
1.15 |
send_image_sums (client *ns, char *params) |
463 |
elmex |
1.1 |
{ |
464 |
root |
1.3 |
int start, stop; |
465 |
pippijn |
1.22 |
char *cp; |
466 |
root |
1.3 |
|
467 |
root |
1.8 |
packet sl; |
468 |
root |
1.3 |
|
469 |
|
|
start = atoi (params); |
470 |
|
|
for (cp = params; *cp != '\0'; cp++) |
471 |
|
|
if (*cp == ' ') |
472 |
|
|
break; |
473 |
|
|
|
474 |
|
|
stop = atoi (cp); |
475 |
root |
1.24 |
if (stop < start || *cp == '\0' || (stop - start) > 1000 || stop >= MAX_FACES) |
476 |
root |
1.3 |
{ |
477 |
root |
1.7 |
sl.printf ("replyinfo image_sums %d %d", start, stop); |
478 |
|
|
ns->send_packet (sl); |
479 |
|
|
sl.reset (); |
480 |
root |
1.3 |
return; |
481 |
|
|
} |
482 |
|
|
|
483 |
root |
1.6 |
sl.printf ("replyinfo image_sums %d %d ", start, stop); |
484 |
root |
1.3 |
|
485 |
root |
1.24 |
for (int i = start; i <= stop && i < faces.size (); i++) |
486 |
root |
1.3 |
{ |
487 |
root |
1.30 |
ns->faces_sent[i] = true; |
488 |
root |
1.3 |
|
489 |
root |
1.24 |
const facedata *d = face_data (i, ns->faceset); |
490 |
root |
1.6 |
|
491 |
root |
1.24 |
if (sl.room () < 2 + 4 + 1 + d->data.size () + 1) |
492 |
root |
1.23 |
break; |
493 |
|
|
|
494 |
root |
1.6 |
sl << uint16 (i) |
495 |
root |
1.24 |
<< uint32 (0) // checksum |
496 |
|
|
<< uint8 (ns->faceset); |
497 |
|
|
|
498 |
|
|
print_facename (sl, *d); sl << uint8 (0); |
499 |
root |
1.3 |
} |
500 |
root |
1.6 |
|
501 |
root |
1.3 |
/* It would make more sense to catch this pre-emptively in the code above. |
502 |
|
|
* however, if this really happens, we probably just want to cut down the |
503 |
|
|
* size to less than 1000, since that is what we claim the protocol would |
504 |
|
|
* support. |
505 |
|
|
*/ |
506 |
root |
1.23 |
//TODO: taken care of above, should simply abort or make sure the above code is correct |
507 |
root |
1.9 |
if (sl.length () >= MAXSOCKBUF) |
508 |
root |
1.3 |
{ |
509 |
root |
1.9 |
LOG (llevError, "send_image_send: buffer overrun, %d > %d\n", sl.length (), MAXSOCKBUF); |
510 |
root |
1.3 |
abort (); |
511 |
elmex |
1.1 |
} |
512 |
root |
1.6 |
|
513 |
root |
1.11 |
ns->send_packet (sl); |
514 |
elmex |
1.1 |
} |
515 |
root |
1.6 |
|