server/include/client.h

/*
 * CrossFire, A Multiplayer game for the X Window System
 * 
 * Copyright (C) 2005, 2006, 2007 Marc Lehmann & Crossfire+ Development Team
 * Copyright (C) 2002 Mark Wedel & Crossfire Development Team
 * Copyright (C) 1992 Frank Tore Johansen
 * 
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 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 GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 *
 * The author can be reached via e-mail to crossfire@schmorp.de
 */

#ifndef CLIENT_H
#define CLIENT_H

#include <deque>
#include <bitset>
#include <tr1/unordered_set>

// (possibly) max. number of objects "per page" in the ground container
#define FLOORBOX_PAGESIZE 50

struct MapCell
{
  UUID player;                 // this is, unfortunately, very wasteful of memory space, but pretty bandwidth-efficient
  int count;                   /* This is really darkness in the map1 command */
  faceidx faces[MAP_LAYERS];
  unsigned char stat_hp;       // health of something in this space, or 0
  unsigned char flags;
  uint8_t smooth[MAP_LAYERS];
};

#define MAX_CLIENT_X MAP_CLIENT_X
#define MAX_CLIENT_Y MAP_CLIENT_Y

struct Map
{
  struct MapCell cells[MAX_CLIENT_X][MAX_CLIENT_Y];
};

/* True max is 16383 given current map compaction method */
#define MAXANIMNUM  10000

struct statsinfo
{
  char *range, *title;
};

/* This contains basic information on the socket structure.  status is its
 * current state.  we set up our on buffers for sending/receiving, so we can
 * handle some higher level functions.  fd is the actual file descriptor we
 * are using.
 */

/* Only one map mode can actually be used, so lets make it a switch
 * instead of having a bunch of different fields that needed to
 * get toggled.
 */
enum MapMode { Map0Cmd = 0, Map1Cmd = 1, Map1aCmd = 2 };

/* The following is the setup for a ring buffer for storing output
 * data that the OS can't handle right away.
 */
struct Buffer
{
  char data[SOCKETBUFSIZE];
  int start;
  int len;
};

// states the socket can be in
enum {
 ST_DEAD,     // socket is dead
 ST_SETUP,    // initial handshake / setup / login
 ST_PLAYING,  // logged in an playing
 ST_CUSTOM,   // waiting for custom reply

 ST_CHANGE_CLASS,
 ST_GET_PARTY_PASSWORD,
};

// a handler for a specific type of packet
enum {
  PF_PLAYER   = 0x01, // must have valid player / will by synchronised
  PF_PLAYING  = 0x02, // must be in playing state
  PF_COMMAND0 = 0x04, // command starts at offset 0
  PF_COMMAND6 = 0x08, // command starts at offset 6
};

struct packet_type
{
  const char *name;
  void *cb;
  int flags;
};

struct command
{
  tstamp stamp;
  const packet_type *handler;
  char *data;
  int datalen;

  ~command ()
  {
    sfree<char> (data, datalen + 1);
  }
};

struct refitem
{
  object_ptr op;
};

// this represents a container on the client side.
// right now, there are only ever two of them:
// the inventory and the floor/open container
//TODO: unused as of yet
struct client_container : vector< refitem, slice_allocator<refitem> >
{
  client *ns;
  enum { CC_NONE, CC_INVENTORY, CC_MAPSPACE, CC_CONTAINER } type;

  bool item_changed; // one of the items in here possibly changed

  // for mapspace and container
  int x, y;
  maptile *map;

  // for container
  object *env;

  client_container (client *ns)
  : ns (ns), type (CC_NONE) { }

  tag_t tag () const;

  inline iterator merge_item (iterator i, object *op);

  void clear ();
  void update ();

  void set_mapspace (maptile *map, int x, int y);
  void set_container (object *env);
};

/* how many times we are allowed to give the wrong password before being kicked. */
#define MAX_PASSWORD_FAILURES 5

INTERFACE_CLASS (client) // should become player when newsocket is a baseclass of player
struct client : zero_initialised, attachable
{
  int ACC (RW, fd);
  unsigned int inbuf_len;                 // number of bytes valid in inbuf
  statsinfo stats;
  int ACC (RO, active);

  Buffer outputbuffer;                    

  char *ACC (RW, host);                   /* Which host it is connected from (ip address) */
  uint8 ACC (RW, state);                  /* Input state of the player (name, password, etc */

  sint8 ACC (RW, last_level);             /* Last level we sent to client */
  uint16 ACC (RW, last_flags);            /* fire/run on flags for last tick */
  float ACC (RW, last_weapon_sp);         /* if diff than weapon_sp, update client */
  sint32 ACC (RW, last_weight);           /* Last weight as sent to client; -1 means do not send weight */
  sint32 ACC (RW, last_weight_limit);     /* Last weight limit transmitted to client */
  uint32 ACC (RW, last_path_attuned);     /* Last spell attunment sent to client */
  uint32 ACC (RW, last_path_repelled);    /* Last spell repelled sent to client */
  uint32 ACC (RW, last_path_denied);      /* Last spell denied sent to client */
  living ACC (RO, last_stats);            /* Last stats as sent to client */
  float ACC (RW, last_speed);             /* Last speed as sent to client */
  sint16 ACC (RW, last_resist[NROFATTACKS]);/* last resist values sent to client */
  sint64 ACC (RW, last_skill_exp[NUM_SKILLS]);/* shadow register. if != exp. obj update client */

  bool ACC (RW, afk);                     /* player is afk */
  bool ACC (RW, facecache);               /* If true, client is caching images */
  bool ACC (RW, sent_scroll);             
  bool ACC (RW, sound);                   /* does the client want sound */
  bool ACC (RW, newmapcmd);               /* Send newmap command when entering new map SMACFIGGEN */
  bool ACC (RW, plugincmd);               /* CF+ extend the protocol through a plug-in */
  bool ACC (RW, mapinfocmd);              /* CF+ return map info and send map change info */
  bool ACC (RW, extcmd);                  /* CF+ call into extensions/plugins */
  bool ACC (RW, extmap);                  /* CF+ extend map comamnd with extra data */
  bool ACC (RW, buggy_mapscroll);         /* CF+ client crashes on large mapscrolls */
  bool ACC (RW, force_face0);             /* CF+ client workaround for buggy checksum calculation in gcfclient */
  bool ACC (RW, force_bad_checksum);      /* CF+ client workaround for buggy checksum calculation in gcfclient */
  bool ACC (RW, darkness);                /* True if client wants darkness information */
  bool ACC (RW, image2);                  /* Client wants image2/face2 commands */
  bool ACC (RW, update_look);             /* If true, we need to send the look window */
  bool ACC (RW, has_readable_type);       /* If true client accept additional text information */
                                          /* used to arrange text in books, scrolls, or scripted dialogs */
  bool ACC (RW, monitor_spells);          /* Client wishes to be informed when their spell list changes */
  bool ACC (RW, ext_mapinfos);            /* If true client accepts additional info on maps */
                                          /* Below are flags for extedend infos to pass to client 
                                           * with S->C mapextended command */
  bool ACC (RW, EMI_smooth);              /* Send smooth in extendmapinfos */

  uint32 ACC (RW, supported_readables);   /* each bit is a readable supported by client */
  uint32 ACC (RW, cs_version), ACC (RW, sc_version);        /* versions of the client */
  enum MapMode mapmode;         /* Type of map commands the client wants. */
  uint16 ACC (RW, look_position);         /* start of drawing of look window */
  uint8 ACC (RW, mapx), ACC (RW, mapy);             /* How large a map the client wants */
  uint8 ACC (RW, itemcmd);                /* What version of the 'item' protocol command to use */

  maptile *ACC (RW, current_map);         // CF+ last/current player map
  region *ACC (RW, current_region);       // CF+ last/current player region
  int ACC (RW, current_x), ACC (RW, current_y);     // CF+ last/current map position
  char ACC (RW, version)[64];             // CF+ client name/version
  uint8 ACC (RW, faceset);                // CF+ selected faceset

  player_ptr ACC (RO, pl);

  int ACC (RW, rtt), ACC (RW, rttvar); /* round-trip time and -variance, if known */

  void do_destroy ();
  void gather_callbacks (AV *&callbacks, event_type event) const;

  iow socket_ev; void socket_cb (iow &w, int got);
  iw  cmd_ev;    void cmd_cb (iw &w);
  client_container cc_inv, cc_other;

  std::deque< command, slice_allocator<command> > cmd_queue;

  // large structures at the end please
  struct Map lastmap;
  std::bitset<MAXANIMNUM> anims_sent;
  std::bitset<MAX_FACES> faces_sent;

  // if we get an incomplete packet, this is used to hold the data.
  // we add 2 byte for the header, one for the trailing 0 byte
  uint8 inbuf[MAXSOCKBUF + 2 + 1];

  bool may_execute (const packet_type *pkt) const;
  void execute (const packet_type *pkt, char *data, int datalen);

  void queue_command (packet_type *handler, char *data, int datalen);
  MTH bool handle_command ();
  // resets movement state
  MTH void reset_state ();
  // resets variable data used to send stat diffs
  MTH void reset_stats ();

  MTH bool handle_packet ();
  int next_packet ();                     // returns length of packet or 0
  void skip_packet (int len);             // we have processed the packet, skip it

  MTH void flush ();
  MTH void write_outputbuffer ();
  void send (void *buf_, int len);

  void send_packet (const char *buf);
  void send_packet (const char *buf, int len);
  void send_packet_printf (const char *format, ...);
  void send_packet (packet &sl);

  void send_drawinfo (const char *msg, int flags = NDI_BLACK);
  MTH void send_face (faceidx facenum, bool nocache = false);
  MTH void send_faces (object *ob);
  MTH void send_animation (short anim_num);

  // called when something under the player changes
  MTH void floorbox_update () { update_look = 1; }
  // called when the player has been moved
  MTH void floorbox_reset  () { look_position = 0; floorbox_update (); }

  MTH static client *create (int fd, const char *peername);

protected:
  client (int fd, const char *from_ip);
  ~client ();
};

#define CLIENT_SUPPORT_READABLES(__sockPtr,__type)\
        ( ((__type)>0) &&\
          ((__sockPtr)->has_readable_type) && \
          ((__sockPtr)->supported_readables & (1<<(__type))) )

/* Constants in the form EMI_ is for extended map infos.
 * Even if the client select the additionnal infos it wants
 * on the map, there may exist cases where this whole info
 * is not given in one buch but in separate bunches. This 
 * is done performance reasons (imagine some info related to
 * a visible object and another info related to a 4 square
 * width and height area). At the begin of an extended info packet
 * is a bit field. A bit is activated for each extended info
 * present in the data 
 */

/* Meanings:
 * EMI_NOREDRAW  Take extended infos into account but don't redraw,
 *               some additionnal datas will follow in a new packet
 * EMI_SMOOTH    Datas about smoothing  
 */
#define EMI_NOREDRAW        0x01
#define EMI_SMOOTH          0x02

/* this last one says the bitfield continue un next byte
 * There may be several on contiguous bytes. So there is 7
 * actual bits used per byte, and the number of bytes
 * is not fixed in protocol
 */
#define EMI_HASMOREBITS     0x80

#define FACE_TYPES  1
#define PNG_FACE_INDEX  0

#define VERSION_CS 1023        /* version >= 1023 understand setup cmd */
#define VERSION_SC 1026
//#define VERSION_SC 1027 // requestinfo image_info and image_sums, makes extending faces on the fly impossible
#define VERSION_INFO "Crossfire+ Server"

typedef object_vector<client, &client::active> sockvec;

extern sockvec clients;

#define for_all_clients(var)                    \
  for (int _i = 0; _i < clients.size (); ++_i)  \
    declvar (client *, var, clients [_i])

#endif

Revision:	1.37
Committed:	Wed Mar 14 04:12:28 2007 UTC (17 years, 2 months ago) by root
Content type:	text/plain
Branch:	MAIN
Changes since 1.36:	+2 -2 lines
Log Message:	- rewrote more face handling code - automatically send smooth faces, as the client will need them anyways and it makes little sense to wait for the client to axk for it. of course, gcfclient suffers from weird ordering problems again. - UP_OBJ_FACE was often abused in situations where other things changed, updated lots of spaces, probably more to be done. - update_smooth became so small that inlining it actually clarified the code. similar for update_space, which is not inlined for other reasons. - faces were not initialised properly - add versioncheck for face data - rewrite invisibility handling a bit: god finger etc. now makes you blink, blinking routine has changed to be less annoying and more useful while still indicating invisibleness.
#	Content
1	/*
2	* CrossFire, A Multiplayer game for the X Window System
3	*
4	* Copyright (C) 2005, 2006, 2007 Marc Lehmann & Crossfire+ Development Team
5	* Copyright (C) 2002 Mark Wedel & Crossfire Development Team
6	* Copyright (C) 1992 Frank Tore Johansen
7	*
8	* This program 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 2 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, write to the Free Software
20	* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
21	*
22	* The author can be reached via e-mail to crossfire@schmorp.de
23	*/
24
25	#ifndef CLIENT_H
26	#define CLIENT_H
27
28	#include <deque>
29	#include <bitset>
30	#include <tr1/unordered_set>
31
32	// (possibly) max. number of objects "per page" in the ground container
33	#define FLOORBOX_PAGESIZE 50
34
35	struct MapCell
36	{
37	UUID player; // this is, unfortunately, very wasteful of memory space, but pretty bandwidth-efficient
38	int count; /* This is really darkness in the map1 command */
39	faceidx faces[MAP_LAYERS];
40	unsigned char stat_hp; // health of something in this space, or 0
41	unsigned char flags;
42	uint8_t smooth[MAP_LAYERS];
43	};
44
45	#define MAX_CLIENT_X MAP_CLIENT_X
46	#define MAX_CLIENT_Y MAP_CLIENT_Y
47
48	struct Map
49	{
50	struct MapCell cells[MAX_CLIENT_X][MAX_CLIENT_Y];
51	};
52
53	/* True max is 16383 given current map compaction method */
54	#define MAXANIMNUM 10000
55
56	struct statsinfo
57	{
58	char range, title;
59	};
60
61	/* This contains basic information on the socket structure. status is its
62	* current state. we set up our on buffers for sending/receiving, so we can
63	* handle some higher level functions. fd is the actual file descriptor we
64	* are using.
65	*/
66
67	/* Only one map mode can actually be used, so lets make it a switch
68	* instead of having a bunch of different fields that needed to
69	* get toggled.
70	*/
71	enum MapMode { Map0Cmd = 0, Map1Cmd = 1, Map1aCmd = 2 };
72
73	/* The following is the setup for a ring buffer for storing output
74	* data that the OS can't handle right away.
75	*/
76	struct Buffer
77	{
78	char data[SOCKETBUFSIZE];
79	int start;
80	int len;
81	};
82
83	// states the socket can be in
84	enum {
85	ST_DEAD, // socket is dead
86	ST_SETUP, // initial handshake / setup / login
87	ST_PLAYING, // logged in an playing
88	ST_CUSTOM, // waiting for custom reply
89
90	ST_CHANGE_CLASS,
91	ST_GET_PARTY_PASSWORD,
92	};
93
94	// a handler for a specific type of packet
95	enum {
96	PF_PLAYER = 0x01, // must have valid player / will by synchronised
97	PF_PLAYING = 0x02, // must be in playing state
98	PF_COMMAND0 = 0x04, // command starts at offset 0
99	PF_COMMAND6 = 0x08, // command starts at offset 6
100	};
101
102	struct packet_type
103	{
104	const char *name;
105	void *cb;
106	int flags;
107	};
108
109	struct command
110	{
111	tstamp stamp;
112	const packet_type *handler;
113	char *data;
114	int datalen;
115
116	~command ()
117	{
118	sfree<char> (data, datalen + 1);
119	}
120	};
121
122	struct refitem
123	{
124	object_ptr op;
125	};
126
127	// this represents a container on the client side.
128	// right now, there are only ever two of them:
129	// the inventory and the floor/open container
130	//TODO: unused as of yet
131	struct client_container : vector< refitem, slice_allocator<refitem> >
132	{
133	client *ns;
134	enum { CC_NONE, CC_INVENTORY, CC_MAPSPACE, CC_CONTAINER } type;
135
136	bool item_changed; // one of the items in here possibly changed
137
138	// for mapspace and container
139	int x, y;
140	maptile *map;
141
142	// for container
143	object *env;
144
145	client_container (client *ns)
146	: ns (ns), type (CC_NONE) { }
147
148	tag_t tag () const;
149
150	inline iterator merge_item (iterator i, object *op);
151
152	void clear ();
153	void update ();
154
155	void set_mapspace (maptile *map, int x, int y);
156	void set_container (object *env);
157	};
158
159	/* how many times we are allowed to give the wrong password before being kicked. */
160	#define MAX_PASSWORD_FAILURES 5
161
162	INTERFACE_CLASS (client) // should become player when newsocket is a baseclass of player
163	struct client : zero_initialised, attachable
164	{
165	int ACC (RW, fd);
166	unsigned int inbuf_len; // number of bytes valid in inbuf
167	statsinfo stats;
168	int ACC (RO, active);
169
170	Buffer outputbuffer;
171
172	char ACC (RW, host); / Which host it is connected from (ip address) */
173	uint8 ACC (RW, state); /* Input state of the player (name, password, etc */
174
175	sint8 ACC (RW, last_level); /* Last level we sent to client */
176	uint16 ACC (RW, last_flags); /* fire/run on flags for last tick */
177	float ACC (RW, last_weapon_sp); /* if diff than weapon_sp, update client */
178	sint32 ACC (RW, last_weight); /* Last weight as sent to client; -1 means do not send weight */
179	sint32 ACC (RW, last_weight_limit); /* Last weight limit transmitted to client */
180	uint32 ACC (RW, last_path_attuned); /* Last spell attunment sent to client */
181	uint32 ACC (RW, last_path_repelled); /* Last spell repelled sent to client */
182	uint32 ACC (RW, last_path_denied); /* Last spell denied sent to client */
183	living ACC (RO, last_stats); /* Last stats as sent to client */
184	float ACC (RW, last_speed); /* Last speed as sent to client */
185	sint16 ACC (RW, last_resist[NROFATTACKS]);/* last resist values sent to client */
186	sint64 ACC (RW, last_skill_exp[NUM_SKILLS]);/* shadow register. if != exp. obj update client */
187
188	bool ACC (RW, afk); /* player is afk */
189	bool ACC (RW, facecache); /* If true, client is caching images */
190	bool ACC (RW, sent_scroll);
191	bool ACC (RW, sound); /* does the client want sound */
192	bool ACC (RW, newmapcmd); /* Send newmap command when entering new map SMACFIGGEN */
193	bool ACC (RW, plugincmd); /* CF+ extend the protocol through a plug-in */
194	bool ACC (RW, mapinfocmd); /* CF+ return map info and send map change info */
195	bool ACC (RW, extcmd); /* CF+ call into extensions/plugins */
196	bool ACC (RW, extmap); /* CF+ extend map comamnd with extra data */
197	bool ACC (RW, buggy_mapscroll); /* CF+ client crashes on large mapscrolls */
198	bool ACC (RW, force_face0); /* CF+ client workaround for buggy checksum calculation in gcfclient */
199	bool ACC (RW, force_bad_checksum); /* CF+ client workaround for buggy checksum calculation in gcfclient */
200	bool ACC (RW, darkness); /* True if client wants darkness information */
201	bool ACC (RW, image2); /* Client wants image2/face2 commands */
202	bool ACC (RW, update_look); /* If true, we need to send the look window */
203	bool ACC (RW, has_readable_type); /* If true client accept additional text information */
204	/* used to arrange text in books, scrolls, or scripted dialogs */
205	bool ACC (RW, monitor_spells); /* Client wishes to be informed when their spell list changes */
206	bool ACC (RW, ext_mapinfos); /* If true client accepts additional info on maps */
207	/* Below are flags for extedend infos to pass to client
208	* with S->C mapextended command */
209	bool ACC (RW, EMI_smooth); /* Send smooth in extendmapinfos */
210
211	uint32 ACC (RW, supported_readables); /* each bit is a readable supported by client */
212	uint32 ACC (RW, cs_version), ACC (RW, sc_version); /* versions of the client */
213	enum MapMode mapmode; /* Type of map commands the client wants. */
214	uint16 ACC (RW, look_position); /* start of drawing of look window */
215	uint8 ACC (RW, mapx), ACC (RW, mapy); /* How large a map the client wants */
216	uint8 ACC (RW, itemcmd); /* What version of the 'item' protocol command to use */
217
218	maptile *ACC (RW, current_map); // CF+ last/current player map
219	region *ACC (RW, current_region); // CF+ last/current player region
220	int ACC (RW, current_x), ACC (RW, current_y); // CF+ last/current map position
221	char ACC (RW, version)[64]; // CF+ client name/version
222	uint8 ACC (RW, faceset); // CF+ selected faceset
223
224	player_ptr ACC (RO, pl);
225
226	int ACC (RW, rtt), ACC (RW, rttvar); /* round-trip time and -variance, if known */
227
228	void do_destroy ();
229	void gather_callbacks (AV *&callbacks, event_type event) const;
230
231	iow socket_ev; void socket_cb (iow &w, int got);
232	iw cmd_ev; void cmd_cb (iw &w);
233	client_container cc_inv, cc_other;
234
235	std::deque< command, slice_allocator<command> > cmd_queue;
236
237	// large structures at the end please
238	struct Map lastmap;
239	std::bitset<MAXANIMNUM> anims_sent;
240	std::bitset<MAX_FACES> faces_sent;
241
242	// if we get an incomplete packet, this is used to hold the data.
243	// we add 2 byte for the header, one for the trailing 0 byte
244	uint8 inbuf[MAXSOCKBUF + 2 + 1];
245
246	bool may_execute (const packet_type *pkt) const;
247	void execute (const packet_type pkt, char data, int datalen);
248
249	void queue_command (packet_type handler, char data, int datalen);
250	MTH bool handle_command ();
251	// resets movement state
252	MTH void reset_state ();
253	// resets variable data used to send stat diffs
254	MTH void reset_stats ();
255
256	MTH bool handle_packet ();
257	int next_packet (); // returns length of packet or 0
258	void skip_packet (int len); // we have processed the packet, skip it
259
260	MTH void flush ();
261	MTH void write_outputbuffer ();
262	void send (void *buf_, int len);
263
264	void send_packet (const char *buf);
265	void send_packet (const char *buf, int len);
266	void send_packet_printf (const char *format, ...);
267	void send_packet (packet &sl);
268
269	void send_drawinfo (const char *msg, int flags = NDI_BLACK);
270	MTH void send_face (faceidx facenum, bool nocache = false);
271	MTH void send_faces (object *ob);
272	MTH void send_animation (short anim_num);
273
274	// called when something under the player changes
275	MTH void floorbox_update () { update_look = 1; }
276	// called when the player has been moved
277	MTH void floorbox_reset () { look_position = 0; floorbox_update (); }
278
279	MTH static client create (int fd, const char peername);
280
281	protected:
282	client (int fd, const char *from_ip);
283	~client ();
284	};
285
286	#define CLIENT_SUPPORT_READABLES(__sockPtr,__type)\
287	( ((__type)>0) &&\
288	((__sockPtr)->has_readable_type) && \
289	((__sockPtr)->supported_readables & (1<<(__type))) )
290
291	/* Constants in the form EMI_ is for extended map infos.
292	* Even if the client select the additionnal infos it wants
293	* on the map, there may exist cases where this whole info
294	* is not given in one buch but in separate bunches. This
295	* is done performance reasons (imagine some info related to
296	* a visible object and another info related to a 4 square
297	* width and height area). At the begin of an extended info packet
298	* is a bit field. A bit is activated for each extended info
299	* present in the data
300	*/
301
302	/* Meanings:
303	* EMI_NOREDRAW Take extended infos into account but don't redraw,
304	* some additionnal datas will follow in a new packet
305	* EMI_SMOOTH Datas about smoothing
306	*/
307	#define EMI_NOREDRAW 0x01
308	#define EMI_SMOOTH 0x02
309
310	/* this last one says the bitfield continue un next byte
311	* There may be several on contiguous bytes. So there is 7
312	* actual bits used per byte, and the number of bytes
313	* is not fixed in protocol
314	*/
315	#define EMI_HASMOREBITS 0x80
316
317	#define FACE_TYPES 1
318	#define PNG_FACE_INDEX 0
319
320	#define VERSION_CS 1023 /* version >= 1023 understand setup cmd */
321	#define VERSION_SC 1026
322	//#define VERSION_SC 1027 // requestinfo image_info and image_sums, makes extending faces on the fly impossible
323	#define VERSION_INFO "Crossfire+ Server"
324
325	typedef object_vector<client, &client::active> sockvec;
326
327	extern sockvec clients;
328
329	#define for_all_clients(var) \
330	for (int _i = 0; _i < clients.size (); ++_i) \
331	declvar (client *, var, clients [_i])
332
333	#endif
334