1 |
/* |
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* This file is part of Deliantra, the Roguelike Realtime MMORPG. |
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* |
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* Copyright (©) 2005,2006,2007,2008,2009,2010 Marc Alexander Lehmann / Robin Redeker / the Deliantra team |
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* Copyright (©) 2001 Mark Wedel |
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* Copyright (©) 1992 Frank Tore Johansen |
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* |
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* Deliantra is free software: you can redistribute it and/or modify it under |
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* the terms of the Affero GNU General Public License as published by the |
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* Free Software Foundation, either version 3 of the License, or (at your |
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* 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 Affero GNU General Public License |
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* and the GNU General Public License along with this program. If not, see |
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* <http://www.gnu.org/licenses/>. |
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* |
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* The authors can be reached via e-mail to <support@deliantra.net> |
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*/ |
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|
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//+GPL |
26 |
|
27 |
/** |
28 |
* \file |
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* Client handling. |
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* |
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* \date 2003-12-02 |
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* |
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* This file implements all of the goo on the server side for handling |
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* clients. It's got a bunch of global variables for keeping track of |
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* each of the clients. |
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* |
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* Note: All functions that are used to process data from the client |
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* have the prototype of (char *data, int datalen, int client_num). This |
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* way, we can use one dispatch table. |
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* |
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* esrv_map_new starts updating the map |
42 |
* |
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*/ |
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|
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#include <global.h> |
46 |
#include <sproto.h> |
47 |
|
48 |
#include <living.h> |
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|
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/* This block is basically taken from socket.c - I assume if it works there, |
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* it should work here. |
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*/ |
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#include <sys/types.h> |
54 |
#include <sys/time.h> |
55 |
#include <sys/socket.h> |
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#include <netinet/in.h> |
57 |
#include <netdb.h> |
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|
59 |
#include <unistd.h> |
60 |
#include <sys/time.h> |
61 |
|
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#include "sounds.h" |
63 |
|
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/** |
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* This table translates the attack numbers as used within the |
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* program to the value we use when sending STATS command to the |
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* client. If a value is -1, then we don't send that to the |
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* client. |
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*/ |
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static short atnr_cs_stat[NROFATTACKS] = |
71 |
{ |
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CS_STAT_RES_PHYS, |
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CS_STAT_RES_MAG, |
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CS_STAT_RES_FIRE, |
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CS_STAT_RES_ELEC, |
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CS_STAT_RES_COLD, |
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CS_STAT_RES_CONF, |
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CS_STAT_RES_ACID, |
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CS_STAT_RES_DRAIN, |
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-1 /* weaponmagic */, |
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CS_STAT_RES_GHOSTHIT, |
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CS_STAT_RES_POISON, |
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CS_STAT_RES_SLOW, |
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CS_STAT_RES_PARA, |
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CS_STAT_TURN_UNDEAD, |
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CS_STAT_RES_FEAR, |
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-1 /* Cancellation */, |
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CS_STAT_RES_DEPLETE, |
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CS_STAT_RES_DEATH, |
90 |
-1 /* Chaos */, |
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-1 /* Counterspell */, |
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-1 /* Godpower */, |
93 |
CS_STAT_RES_HOLYWORD, |
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CS_STAT_RES_BLIND, |
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-1, /* Internal */ |
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-1, /* life stealing */ |
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-1 /* Disease - not fully done yet */ |
98 |
}; |
99 |
|
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static void |
101 |
socket_map_scroll (client *ns, int dx, int dy) |
102 |
{ |
103 |
struct Map newmap; |
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int x, y, mx, my; |
105 |
|
106 |
ns->send_packet_printf ("map_scroll %d %d", dx, dy); |
107 |
|
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/* If we are using the Map1aCmd, we may in fact send |
109 |
* head information that is outside the viewable map. |
110 |
* So set the mx,my to the max value we want to |
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* look for. Removed code to do so - it caused extra |
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* complexities for the client, and probably doesn't make |
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* that much difference in bandwidth. |
114 |
*/ |
115 |
mx = ns->mapx; |
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my = ns->mapy; |
117 |
|
118 |
/* the x and y here are coordinates for the new map, i.e. if we moved |
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* (dx,dy), newmap[x][y] = oldmap[x-dx][y-dy]. For this reason, |
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* if the destination x or y coordinate is outside the viewable |
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* area, we clear the values - otherwise, the old values |
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* are preserved, and the check_head thinks it needs to clear them. |
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*/ |
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for (x = 0; x < mx; x++) |
125 |
for (y = 0; y < my; y++) |
126 |
if (x >= ns->mapx || y >= ns->mapy) |
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/* clear cells outside the viewable area */ |
128 |
memset (&newmap.cells[x][y], 0, sizeof (struct MapCell)); |
129 |
else if ((x + dx) < 0 || (x + dx) >= ns->mapx || (y + dy) < 0 || (y + dy) >= ns->mapy) |
130 |
/* clear newly visible tiles within the viewable area */ |
131 |
memset (&(newmap.cells[x][y]), 0, sizeof (struct MapCell)); |
132 |
else |
133 |
memcpy (&(newmap.cells[x][y]), &(ns->lastmap.cells[x + dx][y + dy]), sizeof (struct MapCell)); |
134 |
|
135 |
memcpy (&(ns->lastmap), &newmap, sizeof (struct Map)); |
136 |
|
137 |
/* Make sure that the next "map1" command will be sent (even if it is |
138 |
* empty). |
139 |
*/ |
140 |
ns->sent_scroll = 1; |
141 |
} |
142 |
|
143 |
static void |
144 |
clear_map (player *pl) |
145 |
{ |
146 |
pl->ns->mapinfo_queue_clear (); |
147 |
|
148 |
memset (&pl->ns->lastmap, 0, sizeof (pl->ns->lastmap)); |
149 |
|
150 |
pl->ns->force_newmap = false; |
151 |
|
152 |
if (pl->ns->newmapcmd == 1) |
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pl->ns->send_packet ("newmap"); |
154 |
|
155 |
pl->ns->floorbox_reset (); |
156 |
} |
157 |
|
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static void |
159 |
send_map_info (player *pl) |
160 |
{ |
161 |
client &socket = *pl->ns; |
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object *ob = pl->viewpoint; |
163 |
|
164 |
if (socket.mapinfocmd) |
165 |
{ |
166 |
if (ob->map && ob->map->path[0]) |
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{ |
168 |
int flags = 0; |
169 |
|
170 |
if (ob->map->tile_path[0]) flags |= 1; |
171 |
if (ob->map->tile_path[1]) flags |= 2; |
172 |
if (ob->map->tile_path[2]) flags |= 4; |
173 |
if (ob->map->tile_path[3]) flags |= 8; |
174 |
|
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socket.send_packet_printf ("mapinfo - spatial %d %d %d %d %d %s", |
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flags, socket.mapx / 2 - ob->x, socket.mapy / 2 - ob->y, |
177 |
ob->map->width, ob->map->height, &ob->map->path); |
178 |
} |
179 |
else |
180 |
socket.send_packet ("mapinfo current"); |
181 |
} |
182 |
} |
183 |
|
184 |
/** check for map/region change and send new map data */ |
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static void |
186 |
check_map_change (player *pl) |
187 |
{ |
188 |
client &socket = *pl->ns; |
189 |
object *ob = pl->viewpoint; |
190 |
|
191 |
region *reg = ob->region (); |
192 |
if (socket.current_region != reg) |
193 |
{ |
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INVOKE_PLAYER (REGION_CHANGE, pl, ARG_REGION (reg), ARG_REGION (socket.current_region)); |
195 |
socket.current_region = reg; |
196 |
} |
197 |
|
198 |
// first try to aovid a full newmap on tiled map scrolls |
199 |
if (socket.current_map != ob->map && !socket.force_newmap) |
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{ |
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rv_vector rv; |
202 |
|
203 |
get_rangevector_from_mapcoord (socket.current_map, socket.current_x, socket.current_y, ob, &rv, 0); |
204 |
|
205 |
// manhattan distance is very handy here |
206 |
if (rv.distance < 8) // 8 works nicely for speed << 70 and buggy gcfclient |
207 |
{ |
208 |
socket.current_map = ob->map; |
209 |
socket.current_x = ob->x; |
210 |
socket.current_y = ob->y; |
211 |
|
212 |
socket_map_scroll (&socket, rv.distance_x, rv.distance_y); |
213 |
socket.floorbox_reset (); |
214 |
send_map_info (pl); |
215 |
} |
216 |
} |
217 |
|
218 |
if (socket.current_map != ob->map || socket.force_newmap) |
219 |
{ |
220 |
clear_map (pl); |
221 |
socket.current_map = ob->map; |
222 |
send_map_info (pl); |
223 |
} |
224 |
else if (socket.current_x != ob->x || socket.current_y != ob->y) |
225 |
{ |
226 |
int dx = ob->x - socket.current_x; |
227 |
int dy = ob->y - socket.current_y; |
228 |
|
229 |
socket_map_scroll (&socket, ob->x - socket.current_x, ob->y - socket.current_y); |
230 |
socket.floorbox_reset (); |
231 |
} |
232 |
|
233 |
socket.current_x = ob->x; |
234 |
socket.current_y = ob->y; |
235 |
} |
236 |
|
237 |
/** |
238 |
* This sends the skill number to name mapping. We ignore |
239 |
* the params - we always send the same info no matter what. |
240 |
*/ |
241 |
static void |
242 |
send_skill_info (client *ns, char *params) |
243 |
{ |
244 |
packet sl; |
245 |
sl << "replyinfo skill_info\n"; |
246 |
|
247 |
for (int i = 0; i < skillvec.size (); ++i) |
248 |
sl.printf ("%d:%s\n", CS_STAT_SKILLINFO + i, &skillvec [i]->name); |
249 |
|
250 |
if (sl.length () > MAXSOCKBUF) |
251 |
cleanup ("buffer overflow in send_skill_info!"); |
252 |
|
253 |
ns->send_packet (sl); |
254 |
} |
255 |
|
256 |
/** |
257 |
* This sends the spell path to name mapping. We ignore |
258 |
* the params - we always send the same info no matter what. |
259 |
*/ |
260 |
static void |
261 |
send_spell_paths (client * ns, char *params) |
262 |
{ |
263 |
packet sl; |
264 |
|
265 |
sl << "replyinfo spell_paths\n"; |
266 |
|
267 |
for (int i = 0; i < NRSPELLPATHS; i++) |
268 |
sl.printf ("%d:%s\n", 1 << i, spellpathnames[i]); |
269 |
|
270 |
if (sl.length () > MAXSOCKBUF) |
271 |
cleanup ("buffer overflow in send_spell_paths!"); |
272 |
|
273 |
ns->send_packet (sl); |
274 |
} |
275 |
|
276 |
/** |
277 |
* RequestInfo is sort of a meta command. There is some specific |
278 |
* request of information, but we call other functions to provide |
279 |
* that information. |
280 |
*/ |
281 |
void |
282 |
RequestInfo (char *buf, int len, client *ns) |
283 |
{ |
284 |
char *params; |
285 |
|
286 |
/* find the first space, make it null, and update the |
287 |
* params pointer. |
288 |
*/ |
289 |
for (params = buf; *params; params++) |
290 |
if (*params == ' ') |
291 |
{ |
292 |
*params++ = 0; |
293 |
break; |
294 |
} |
295 |
|
296 |
if (!strcmp (buf, "skill_info")) |
297 |
send_skill_info (ns, params); |
298 |
else if (!strcmp (buf, "spell_paths")) |
299 |
send_spell_paths (ns, params); |
300 |
else |
301 |
{ |
302 |
// undo tokenisation above and send replyinfo with the request unchanged |
303 |
if (*params) |
304 |
*--params = ' '; |
305 |
|
306 |
ns->send_packet_printf ("replyinfo %s", buf); |
307 |
} |
308 |
} |
309 |
|
310 |
void |
311 |
ExtCmd (char *buf, int len, player *pl) |
312 |
{ |
313 |
INVOKE_PLAYER (EXTCMD, pl, ARG_DATA (buf, len)); |
314 |
} |
315 |
|
316 |
void |
317 |
ExtiCmd (char *buf, int len, client *ns) |
318 |
{ |
319 |
INVOKE_CLIENT (EXTICMD, ns, ARG_DATA (buf, len)); |
320 |
} |
321 |
|
322 |
//-GPL |
323 |
|
324 |
void |
325 |
client::mapinfo_queue_clear () |
326 |
{ |
327 |
for (auto (i, mapinfo_queue.begin ()); i != mapinfo_queue.end (); ++i) |
328 |
free (*i); |
329 |
|
330 |
mapinfo_queue.clear (); |
331 |
} |
332 |
|
333 |
bool |
334 |
client::mapinfo_try (char *buf) |
335 |
{ |
336 |
char *token = buf; |
337 |
buf += strlen (buf) + 9; |
338 |
|
339 |
// initial map and its origin |
340 |
maptile *map = pl->viewpoint->map; |
341 |
int mapx = pl->ns->mapx / 2 - pl->viewpoint->x; |
342 |
int mapy = pl->ns->mapy / 2 - pl->viewpoint->y; |
343 |
int max_distance = 8; // limit maximum path length to something generous |
344 |
|
345 |
while (*buf && map && max_distance) |
346 |
{ |
347 |
int dir = *buf++ - '1'; |
348 |
|
349 |
if (dir >= 0 && dir <= 3) |
350 |
{ |
351 |
if (!map->tile_path [dir]) |
352 |
map = 0; |
353 |
else if (map->tile_available (dir, false)) |
354 |
{ |
355 |
maptile *neigh = map->tile_map [dir]; |
356 |
|
357 |
switch (dir) |
358 |
{ |
359 |
case 0: mapy -= neigh->height; break; |
360 |
case 2: mapy += map ->height; break; |
361 |
case 3: mapx -= neigh->width ; break; |
362 |
case 1: mapx += map ->width ; break; |
363 |
} |
364 |
|
365 |
map = neigh; |
366 |
--max_distance; |
367 |
} |
368 |
else |
369 |
return 0; |
370 |
} |
371 |
else |
372 |
max_distance = 0; |
373 |
} |
374 |
|
375 |
if (!max_distance) |
376 |
send_packet_printf ("mapinfo %s error", token); |
377 |
else if (!map || !map->path) |
378 |
send_packet_printf ("mapinfo %s nomap", token); |
379 |
else |
380 |
{ |
381 |
int flags = 0; |
382 |
|
383 |
if (map->tile_path[0]) flags |= 1; |
384 |
if (map->tile_path[1]) flags |= 2; |
385 |
if (map->tile_path[2]) flags |= 4; |
386 |
if (map->tile_path[3]) flags |= 8; |
387 |
|
388 |
send_packet_printf ("mapinfo %s spatial %d %d %d %d %d %s", token, flags, mapx, mapy, map->width, map->height, &map->path); |
389 |
} |
390 |
|
391 |
return 1; |
392 |
} |
393 |
|
394 |
void |
395 |
client::mapinfo_queue_run () |
396 |
{ |
397 |
if (mapinfo_queue.empty () || !pl) |
398 |
return; |
399 |
|
400 |
for (int i = 0; i < mapinfo_queue.size (); ++i) |
401 |
if (mapinfo_try (mapinfo_queue [i])) |
402 |
{ |
403 |
free (mapinfo_queue [i]); |
404 |
mapinfo_queue.erase (i); |
405 |
} |
406 |
else |
407 |
++i; |
408 |
} |
409 |
|
410 |
void |
411 |
MapInfoCmd (char *buf, int len, player *pl) |
412 |
{ |
413 |
// <mapinfo tag spatial tile-path |
414 |
// >mapinfo tag spatial flags x y w h hash |
415 |
|
416 |
char *token = buf; |
417 |
|
418 |
if (!(buf = strchr (buf, ' '))) |
419 |
return; |
420 |
|
421 |
if (!strncmp (buf, " spatial ", 9)) |
422 |
{ |
423 |
char *copy = strdup (token); |
424 |
copy [buf - token] = 0; |
425 |
|
426 |
#if 0 |
427 |
// this makes only sense when we flush the buffer immediately |
428 |
if (pl->ns->mapinfo_try (copy)) |
429 |
free (copy); |
430 |
else |
431 |
#endif |
432 |
pl->ns->mapinfo_queue.push_back (copy); |
433 |
} |
434 |
else |
435 |
pl->ns->send_packet_printf ("mapinfo %s unsupported", token); |
436 |
} |
437 |
|
438 |
/** This is the Setup cmd */ |
439 |
void |
440 |
SetUp (char *buf, int len, client * ns) |
441 |
{ |
442 |
INVOKE_CLIENT (SETUP, ns, ARG_DATA (buf, len)); |
443 |
} |
444 |
|
445 |
/** |
446 |
* The client has requested to be added to the game. |
447 |
* This is what takes care of it. We tell the client how things worked out. |
448 |
* I am not sure if this file is the best place for this function. however, |
449 |
* it either has to be here or init_sockets needs to be exported. |
450 |
*/ |
451 |
void |
452 |
AddMeCmd (char *buf, int len, client *ns) |
453 |
{ |
454 |
INVOKE_CLIENT (ADDME, ns, ARG_DATA (buf, len)); |
455 |
} |
456 |
|
457 |
//+GPL |
458 |
|
459 |
/** |
460 |
* This handles the general commands from the client (ie, north, fire, cast, |
461 |
* etc.) |
462 |
*/ |
463 |
void |
464 |
PlayerCmd (char *buf, int len, player *pl) |
465 |
{ |
466 |
/* Check if there is a count. In theory, a zero count could also be |
467 |
* sent, so check for that also. |
468 |
*/ |
469 |
if (atoi (buf) || buf[0] == '0') |
470 |
{ |
471 |
pl->count = atoi ((char *) buf); |
472 |
|
473 |
buf = strchr (buf, ' '); /* advance beyond the numbers */ |
474 |
if (!buf) |
475 |
return; |
476 |
|
477 |
buf++; |
478 |
} |
479 |
|
480 |
execute_newserver_command (pl->ob, (char *)buf); |
481 |
|
482 |
/* Perhaps something better should be done with a left over count. |
483 |
* Cleaning up the input should probably be done first - all actions |
484 |
* for the command that issued the count should be done before any other |
485 |
* commands. |
486 |
*/ |
487 |
pl->count = 0; |
488 |
} |
489 |
|
490 |
/** |
491 |
* This handles the general commands from the client (ie, north, fire, cast, |
492 |
* etc.). It is a lot like PlayerCmd above, but is called with the |
493 |
* 'ncom' method which gives more information back to the client so it |
494 |
* can throttle. |
495 |
*/ |
496 |
void |
497 |
NewPlayerCmd (char *buf, int len, player *pl) |
498 |
{ |
499 |
if (len <= 6) |
500 |
{ |
501 |
LOG (llevDebug, "%s: corrupt ncom command <%s>: not long enough (%d) - discarding\n", pl->ns->host, buf, len); |
502 |
return; |
503 |
} |
504 |
|
505 |
uint16 cmdid = net_uint16 ((uint8 *)buf); |
506 |
sint32 repeat = net_sint32 ((uint8 *)buf + 2); |
507 |
|
508 |
/* -1 is special - no repeat, but don't update */ |
509 |
if (repeat != -1) |
510 |
pl->count = repeat; |
511 |
|
512 |
buf += 6; //len -= 6; |
513 |
|
514 |
execute_newserver_command (pl->ob, buf); |
515 |
|
516 |
/* Perhaps something better should be done with a left over count. |
517 |
* Cleaning up the input should probably be done first - all actions |
518 |
* for the command that issued the count should be done before any other |
519 |
* commands. |
520 |
*/ |
521 |
pl->count = 0; |
522 |
|
523 |
//TODO: schmorp thinks whatever this calculates, it makes no sense at all |
524 |
int time = pl->ob->has_active_speed () |
525 |
? (int) (MAX_TIME / pl->ob->speed) |
526 |
: MAX_TIME * 100; |
527 |
|
528 |
/* Send confirmation of command execution now */ |
529 |
packet sl ("comc"); |
530 |
sl << uint16 (cmdid) << uint32 (time); |
531 |
pl->ns->send_packet (sl); |
532 |
} |
533 |
|
534 |
/** This is a reply to a previous query. */ |
535 |
void |
536 |
ReplyCmd (char *buf, int len, client *ns) |
537 |
{ |
538 |
if (ns->state == ST_CUSTOM) |
539 |
{ |
540 |
INVOKE_CLIENT (REPLY, ns, ARG_DATA (buf, len)); |
541 |
return; |
542 |
} |
543 |
|
544 |
if (!ns->pl) |
545 |
return; //TODO: depends on the exact reply we are after |
546 |
//TODO: but right now, we always have a ns->pl |
547 |
|
548 |
player *pl = ns->pl; |
549 |
|
550 |
/* This is to synthesize how the data would be stored if it |
551 |
* was normally entered. A bit of a hack, and should be cleaned up |
552 |
* once all the X11 code is removed from the server. |
553 |
* |
554 |
* We pass 13 to many of the functions because this way they |
555 |
* think it was the carriage return that was entered, and the |
556 |
* function then does not try to do additional input. |
557 |
*/ |
558 |
snprintf (pl->write_buf, sizeof (pl->write_buf), ":%s", buf); |
559 |
|
560 |
/* this avoids any hacking here */ |
561 |
|
562 |
switch (ns->state) |
563 |
{ |
564 |
case ST_PLAYING: |
565 |
LOG (llevError, "Got reply message with ST_PLAYING input state\n"); |
566 |
break; |
567 |
|
568 |
case ST_GET_PARTY_PASSWORD: /* Get password for party */ |
569 |
receive_party_password (pl->ob, 13); |
570 |
break; |
571 |
|
572 |
default: |
573 |
LOG (llevError, "Unknown input state: %d\n", ns->state); |
574 |
} |
575 |
} |
576 |
|
577 |
/** |
578 |
* Client tells its version info. |
579 |
*/ |
580 |
void |
581 |
VersionCmd (char *buf, int len, client *ns) |
582 |
{ |
583 |
INVOKE_CLIENT (VERSION, ns, ARG_DATA (buf, len)); |
584 |
} |
585 |
|
586 |
/** sound related functions. */ |
587 |
void |
588 |
SetSound (char *buf, int len, client * ns) |
589 |
{ |
590 |
ns->sound = atoi (buf); |
591 |
} |
592 |
|
593 |
/** client wants the map resent */ |
594 |
void |
595 |
MapRedrawCmd (char *buf, int len, player *pl) |
596 |
{ |
597 |
/* This function is currently disabled; just clearing the map state results in |
598 |
* display errors. It should clear the cache and send a newmap command. |
599 |
* Unfortunately this solution does not work because some client versions send |
600 |
* a mapredraw command after receiving a newmap command. |
601 |
*/ |
602 |
} |
603 |
|
604 |
/** |
605 |
* Moves an object (typically, container to inventory). |
606 |
* syntax is: move (to) (tag) (nrof) |
607 |
*/ |
608 |
void |
609 |
MoveCmd (char *buf, int len, player *pl) |
610 |
{ |
611 |
int to, tag, nrof; |
612 |
|
613 |
if (3 != sscanf (buf, "%d %d %d", &to, &tag, &nrof)) |
614 |
{ |
615 |
LOG (llevError, "Incomplete move command: %s\n", buf); |
616 |
return; |
617 |
} |
618 |
|
619 |
esrv_move_object (pl->ob, to, tag, nrof); |
620 |
} |
621 |
|
622 |
/****************************************************************************** |
623 |
* |
624 |
* Start of commands the server sends to the client. |
625 |
* |
626 |
******************************************************************************/ |
627 |
|
628 |
/** |
629 |
* Asks the client to query the user. This way, the client knows |
630 |
* it needs to send something back (vs just printing out a message) |
631 |
*/ |
632 |
void |
633 |
send_query (client *ns, uint8 flags, const char *text) |
634 |
{ |
635 |
ns->send_packet_printf ("query %d %s", flags, text ? text : ""); |
636 |
} |
637 |
|
638 |
/** |
639 |
* Get player's current range attack in obuf. |
640 |
*/ |
641 |
static void |
642 |
rangetostring (player *pl, char *obuf) |
643 |
{ |
644 |
dynbuf_text &buf = msg_dynbuf; buf.clear (); |
645 |
|
646 |
#if 0 |
647 |
// print ranged/chosen_skill etc. objects every call |
648 |
printf ("%s %s => %s (%s)\n", |
649 |
pl->ranged_ob ? &pl->ranged_ob->name : "-", |
650 |
pl->combat_ob ? &pl->combat_ob->name : "-", |
651 |
pl->ob->current_weapon ? &pl->ob->current_weapon->name : "-", |
652 |
pl->ob->chosen_skill ? &pl->ob->chosen_skill->name : "-" |
653 |
); |
654 |
#endif |
655 |
|
656 |
if (pl->ranged_ob) |
657 |
buf << " Range" << (pl->ob->current_weapon == pl->ranged_ob ? "*" : "") << ": " << pl->ranged_ob->name; |
658 |
|
659 |
if (pl->combat_ob) |
660 |
buf << " Combat" << (pl->ob->current_weapon == pl->combat_ob ? "*" : "") << ": " << pl->combat_ob->name; |
661 |
|
662 |
#if 0 |
663 |
//TODO: remove this when slot system is working, this is only for debugging |
664 |
if (pl->ob->chosen_skill) |
665 |
buf << " Skill*: " << pl->ob->chosen_skill->name; |
666 |
#endif |
667 |
|
668 |
//TODO: maybe golem should become the current_weapon, quite simply? |
669 |
if (pl->golem) |
670 |
buf << " Golem*: " << pl->golem->name; |
671 |
|
672 |
buf << '\0'; |
673 |
buf.linearise (obuf); |
674 |
} |
675 |
|
676 |
#define AddIfInt64(Old,New,Type) if (Old != New) {\ |
677 |
Old = New; \ |
678 |
sl << uint8 (Type) << uint64 (New); \ |
679 |
} |
680 |
|
681 |
#define AddIfInt(Old,New,Type) if (Old != New) {\ |
682 |
Old = New; \ |
683 |
sl << uint8 (Type) << uint32 (New); \ |
684 |
} |
685 |
|
686 |
#define AddIfShort(Old,New,Type) if (Old != New) {\ |
687 |
Old = New; \ |
688 |
sl << uint8 (Type) << uint16 (New); \ |
689 |
} |
690 |
|
691 |
#define AddIfFloat(Old,New,Type,mult) if (Old != New) {\ |
692 |
Old = New; \ |
693 |
sl << uint8 (Type) << uint32 (New*FLOAT_MULTI*mult); \ |
694 |
} |
695 |
|
696 |
#define AddIfString(Old,New,Type) if (Old == NULL || strcmp(Old,New)) {\ |
697 |
free(Old); Old = strdup (New);\ |
698 |
sl << uint8 (Type) << data8 (New); \ |
699 |
} |
700 |
|
701 |
/** |
702 |
* Sends a statistics update. We look at the old values, |
703 |
* and only send what has changed. Stat mapping values are in newclient.h |
704 |
* Since this gets sent a lot, this is actually one of the few binary |
705 |
* commands for now. |
706 |
*/ |
707 |
void |
708 |
esrv_update_stats (player *pl) |
709 |
{ |
710 |
client *ns = pl->ns; |
711 |
if (!ns) |
712 |
return; |
713 |
|
714 |
object *ob = pl->observe; |
715 |
if (!ob) |
716 |
return; |
717 |
|
718 |
player *opl = ob->contr ? static_cast<player *>(ob->contr) : pl; |
719 |
|
720 |
packet sl ("stats"); |
721 |
|
722 |
AddIfShort (ns->last_stats.hp, ob->stats.hp, CS_STAT_HP); |
723 |
AddIfShort (ns->last_stats.maxhp, ob->stats.maxhp, CS_STAT_MAXHP); |
724 |
AddIfShort (ns->last_stats.sp, ob->stats.sp, CS_STAT_SP); |
725 |
AddIfShort (ns->last_stats.maxsp, ob->stats.maxsp, CS_STAT_MAXSP); |
726 |
AddIfShort (ns->last_stats.grace, ob->stats.grace, CS_STAT_GRACE); |
727 |
AddIfShort (ns->last_stats.maxgrace, ob->stats.maxgrace, CS_STAT_MAXGRACE); |
728 |
AddIfShort (ns->last_stats.Str, ob->stats.Str, CS_STAT_STR); |
729 |
AddIfShort (ns->last_stats.Dex, ob->stats.Dex, CS_STAT_DEX); |
730 |
AddIfShort (ns->last_stats.Con, ob->stats.Con, CS_STAT_CON); |
731 |
AddIfShort (ns->last_stats.Int, ob->stats.Int, CS_STAT_INT); |
732 |
AddIfShort (ns->last_stats.Wis, ob->stats.Wis, CS_STAT_WIS); |
733 |
AddIfShort (ns->last_stats.Pow, ob->stats.Pow, CS_STAT_POW); |
734 |
AddIfShort (ns->last_stats.Cha, ob->stats.Cha, CS_STAT_CHA); |
735 |
|
736 |
for (int s = 0; s < CS_NUM_SKILLS; s++) |
737 |
if (object *skill = opl->last_skill_ob [s]) |
738 |
if (skill->stats.exp != ns->last_skill_exp [s]) |
739 |
{ |
740 |
ns->last_skill_exp [s] = skill->stats.exp; |
741 |
|
742 |
/* Always send along the level if exp changes. This is only |
743 |
* 1 extra byte, but keeps processing simpler. |
744 |
*/ |
745 |
sl << uint8 (CS_STAT_SKILLINFO + s) |
746 |
<< uint8 (skill->level) |
747 |
<< uint64 (skill->stats.exp); |
748 |
} |
749 |
|
750 |
AddIfInt64 (ns->last_stats.exp, ob->stats.exp, CS_STAT_EXP64); |
751 |
AddIfShort (ns->last_level, ob->level, CS_STAT_LEVEL); |
752 |
AddIfShort (ns->last_stats.wc, ob->stats.wc, CS_STAT_WC); |
753 |
AddIfShort (ns->last_stats.ac, ob->stats.ac, CS_STAT_AC); |
754 |
AddIfShort (ns->last_stats.dam, ob->stats.dam, CS_STAT_DAM); |
755 |
AddIfFloat (ns->last_speed, ob->speed, CS_STAT_SPEED, 1.f / TICK); |
756 |
AddIfShort (ns->last_stats.food, ob->stats.food, CS_STAT_FOOD); |
757 |
AddIfFloat (ns->last_weapon_sp, pl->weapon_sp, CS_STAT_WEAP_SP, 1.f / TICK); |
758 |
AddIfInt (ns->last_weight_limit, weight_limit[ob->stats.Str], CS_STAT_WEIGHT_LIM); |
759 |
|
760 |
int flags = (opl->fire_on ? SF_FIREON : 0) |
761 |
| (opl->run_on ? SF_RUNON : 0); |
762 |
|
763 |
AddIfShort (ns->last_flags, flags, CS_STAT_FLAGS); |
764 |
|
765 |
for (int i = 0; i < NROFATTACKS; i++) |
766 |
/* Skip ones we won't send */ |
767 |
if (atnr_cs_stat[i] >= 0) |
768 |
AddIfShort (ns->last_resist[i], ob->resist[i], atnr_cs_stat[i]); |
769 |
|
770 |
if (pl->ns->monitor_spells) |
771 |
{ |
772 |
AddIfInt (ns->last_path_attuned, ob->path_attuned, CS_STAT_SPELL_ATTUNE); |
773 |
AddIfInt (ns->last_path_repelled, ob->path_repelled, CS_STAT_SPELL_REPEL); |
774 |
AddIfInt (ns->last_path_denied, ob->path_denied, CS_STAT_SPELL_DENY); |
775 |
} |
776 |
|
777 |
char buf[MAX_BUF]; |
778 |
rangetostring (opl, buf); /* we want use the new fire & run system in new client */ |
779 |
AddIfString (ns->stats.range, buf, CS_STAT_RANGE); |
780 |
set_title (ob, buf); |
781 |
AddIfString (ns->stats.title, buf, CS_STAT_TITLE); |
782 |
|
783 |
/* Only send it away if we have some actual data */ |
784 |
if (sl.length () > 6) |
785 |
ns->send_packet (sl); |
786 |
} |
787 |
|
788 |
/** |
789 |
* Tells the client that here is a player it should start using. |
790 |
*/ |
791 |
void |
792 |
esrv_new_player (player *pl) |
793 |
{ |
794 |
sint32 weight = pl->ob->client_weight (); |
795 |
|
796 |
packet sl ("player"); |
797 |
|
798 |
sl << uint32 (pl->ob->count) |
799 |
<< uint32 (weight) |
800 |
<< uint32 (pl->ob->face) |
801 |
<< data8 (pl->ob->name); |
802 |
|
803 |
pl->ns->last_weight = weight; |
804 |
pl->ns->send_packet (sl); |
805 |
} |
806 |
|
807 |
/****************************************************************************** |
808 |
* |
809 |
* Start of map related commands. |
810 |
* |
811 |
******************************************************************************/ |
812 |
|
813 |
/** Clears a map cell */ |
814 |
static void |
815 |
map_clearcell (struct MapCell *cell, int count) |
816 |
{ |
817 |
cell->faces[0] = 0; |
818 |
cell->faces[1] = 0; |
819 |
cell->faces[2] = 0; |
820 |
cell->smooth[0] = 0; |
821 |
cell->smooth[1] = 0; |
822 |
cell->smooth[2] = 0; |
823 |
cell->count = count; |
824 |
cell->stat_hp = 0; |
825 |
cell->flags = 0; |
826 |
cell->player = 0; |
827 |
} |
828 |
|
829 |
#define MAX_LAYERS 3 |
830 |
|
831 |
/** |
832 |
* Removes the need to replicate the same code for each layer. |
833 |
* this returns true if this space is now in fact different than |
834 |
* it was. |
835 |
* sl is the socklist this data is going into. |
836 |
* ns is the socket we are working on - all the info we care |
837 |
* about is in this socket structure, so now need not pass the |
838 |
* entire player object. |
839 |
* layer is the layer to update, with 2 being the floor and 0 the |
840 |
* top layer (this matches what the GET_MAP_FACE and GET_MAP_FACE_OBJ) |
841 |
* take. Interesting to note that before this function, the map1 function |
842 |
* numbers the spaces differently - I think this was a leftover from |
843 |
* the map command, where the faces stack up. Sinces that is no longer |
844 |
* the case, it seems to make more sense to have these layer values |
845 |
* actually match. |
846 |
*/ |
847 |
static int |
848 |
update_space (packet &sl, client &ns, mapspace &ms, MapCell &lastcell, int layer) |
849 |
{ |
850 |
object *ob = ms.faces_obj [layer]; |
851 |
|
852 |
/* If there is no object for this space, or if the face for the object |
853 |
* is the blank face, set the face number to zero. |
854 |
* else if we have the stored head object for this space, that takes |
855 |
* precedence over the other object for this space. |
856 |
* otherwise, we do special head processing |
857 |
*/ |
858 |
uint16 face_num = ob && ob->face != blank_face ? ob->face : 0; |
859 |
|
860 |
/* We've gotten what face we want to use for the object. Now see if |
861 |
* if it has changed since we last sent it to the client. |
862 |
*/ |
863 |
if (lastcell.faces[layer] != face_num) |
864 |
{ |
865 |
lastcell.faces[layer] = face_num; |
866 |
|
867 |
if (!ns.faces_sent[face_num]) |
868 |
if (ob) |
869 |
ns.send_faces (ob); |
870 |
else |
871 |
ns.send_face (face_num, 10); |
872 |
|
873 |
sl << uint16 (face_num); |
874 |
return 1; |
875 |
} |
876 |
|
877 |
/* Nothing changed */ |
878 |
return 0; |
879 |
} |
880 |
|
881 |
//-GPL |
882 |
|
883 |
// prefetch maps in an area of PREFETCH x PREFETCH around the player |
884 |
#define PREFETCH 40 |
885 |
|
886 |
// prefetch a generous area around the player |
887 |
static void |
888 |
prefetch_surrounding_maps (object *op) |
889 |
{ |
890 |
for (maprect *rect = op->map->split_to_tiles (mapwalk_buf, |
891 |
op->x - PREFETCH , op->y - PREFETCH , |
892 |
op->x + PREFETCH + 1, op->y + PREFETCH + 1); |
893 |
rect->m; |
894 |
++rect) |
895 |
rect->m->touch (); |
896 |
} |
897 |
|
898 |
//+GPL |
899 |
|
900 |
/** |
901 |
* Draws client map. |
902 |
*/ |
903 |
void |
904 |
draw_client_map (player *pl) |
905 |
{ |
906 |
object *ob = pl->viewpoint; |
907 |
if (!pl->observe->active) |
908 |
return; |
909 |
|
910 |
/* If player is just joining the game, he isn't here yet, so the map |
911 |
* can get swapped out. If so, don't try to send them a map. All will |
912 |
* be OK once they really log in. |
913 |
*/ |
914 |
if (!ob->map || ob->map->in_memory != MAP_ACTIVE) |
915 |
return; |
916 |
|
917 |
int startlen, oldlen; |
918 |
|
919 |
check_map_change (pl); |
920 |
prefetch_surrounding_maps (pl->ob); |
921 |
|
922 |
/* do LOS after calls to update_position */ |
923 |
/* unfortunately, we need to udpate los when observing, currently */ |
924 |
if (pl->do_los || pl->viewpoint != pl->ob) |
925 |
{ |
926 |
pl->do_los = 0; |
927 |
pl->update_los (); |
928 |
} |
929 |
|
930 |
/** |
931 |
* This function uses the new map1 protocol command to send the map |
932 |
* to the client. It is necessary because the old map command supports |
933 |
* a maximum map size of 15x15. |
934 |
* This function is much simpler than the old one. This is because |
935 |
* the old function optimized to send as few face identifiers as possible, |
936 |
* at the expense of sending more coordinate location (coordinates were |
937 |
* only 1 byte, faces 2 bytes, so this was a worthwhile savings). Since |
938 |
* we need 2 bytes for coordinates and 2 bytes for faces, such a trade off |
939 |
* maps no sense. Instead, we actually really only use 12 bits for coordinates, |
940 |
* and use the other 4 bits for other informatiion. For full documentation |
941 |
* of what we send, see the doc/Protocol file. |
942 |
* I will describe internally what we do: |
943 |
* the ns->lastmap shows how the map last looked when sent to the client. |
944 |
* in the lastmap structure, there is a cells array, which is set to the |
945 |
* maximum viewable size (As set in config.h). |
946 |
* in the cells, there are faces and a count value. |
947 |
* we use the count value to hold the darkness value. If -1, then this space |
948 |
* is not viewable. |
949 |
* we use faces[0] faces[1] faces[2] to hold what the three layers |
950 |
* look like. |
951 |
*/ |
952 |
|
953 |
client &socket = *pl->ns; |
954 |
|
955 |
packet sl (socket.mapmode == Map1Cmd ? "map1" : "map1a"); |
956 |
|
957 |
startlen = sl.length (); |
958 |
|
959 |
int hx = socket.mapx / 2; |
960 |
int hy = socket.mapy / 2; |
961 |
|
962 |
ordered_mapwalk_begin (ob, -hx, -hy, hx, hy) |
963 |
int ax = dx + hx; |
964 |
int ay = dy + hy; |
965 |
|
966 |
int mask = (ax << 10) | (ay << 4); |
967 |
MapCell &lastcell = socket.lastmap.cells[ax][ay]; |
968 |
|
969 |
/* If the coordinates are not valid, or it is too dark to see, |
970 |
* we tell the client as such |
971 |
*/ |
972 |
if (!m) |
973 |
{ |
974 |
/* space is out of map. Update space and clear values |
975 |
* if this hasn't already been done. If the space is out |
976 |
* of the map, it shouldn't have a head. |
977 |
*/ |
978 |
if (lastcell.count != -1) |
979 |
{ |
980 |
sl << uint16 (mask); |
981 |
map_clearcell (&lastcell, -1); |
982 |
} |
983 |
|
984 |
continue; |
985 |
} |
986 |
|
987 |
int d = pl->blocked_los_uc (dx, dy); |
988 |
|
989 |
if (d > 3) |
990 |
{ |
991 |
/* This block deals with spaces that are not visible for whatever |
992 |
* reason. Still may need to send the head for this space. |
993 |
*/ |
994 |
if (lastcell.count != -1 |
995 |
|| lastcell.faces[0] |
996 |
|| lastcell.faces[1] |
997 |
|| lastcell.faces[2] |
998 |
|| lastcell.stat_hp |
999 |
|| lastcell.flags |
1000 |
|| lastcell.player) |
1001 |
sl << uint16 (mask); |
1002 |
|
1003 |
/* properly clear a previously sent big face */ |
1004 |
map_clearcell (&lastcell, -1); |
1005 |
} |
1006 |
else |
1007 |
{ |
1008 |
/* In this block, the space is visible. |
1009 |
*/ |
1010 |
|
1011 |
/* Rather than try to figure out what everything that we might |
1012 |
* need to send is, then form the packet after that, |
1013 |
* we presume that we will in fact form a packet, and update |
1014 |
* the bits by what we do actually send. If we send nothing, |
1015 |
* we just back out sl.length () to the old value, and no harm |
1016 |
* is done. |
1017 |
* I think this is simpler than doing a bunch of checks to see |
1018 |
* what if anything we need to send, setting the bits, then |
1019 |
* doing those checks again to add the real data. |
1020 |
*/ |
1021 |
oldlen = sl.length (); |
1022 |
|
1023 |
sl << uint16 (mask); |
1024 |
|
1025 |
unsigned char dummy; |
1026 |
unsigned char *last_ext = &dummy; |
1027 |
|
1028 |
/* Darkness changed */ |
1029 |
if (lastcell.count != d) |
1030 |
{ |
1031 |
mask |= 0x8; |
1032 |
|
1033 |
*last_ext |= 0x80; |
1034 |
last_ext = &sl[sl.length ()]; |
1035 |
sl << uint8 (d); |
1036 |
} |
1037 |
|
1038 |
lastcell.count = d; |
1039 |
|
1040 |
mapspace &ms = m->at (nx, ny); |
1041 |
ms.update (); |
1042 |
|
1043 |
// extmap handling |
1044 |
uint8 stat_hp = 0; |
1045 |
uint8 stat_width = 0; |
1046 |
uint8 flags = 0; |
1047 |
tag_t player = 0; |
1048 |
|
1049 |
// send hp information, if applicable |
1050 |
if (object *op = ms.faces_obj [0]) |
1051 |
if (op->is_head () && !op->invisible) |
1052 |
{ |
1053 |
if (op->stats.maxhp > op->stats.hp |
1054 |
&& op->stats.maxhp > 0 |
1055 |
&& (op->type == PLAYER |
1056 |
|| op->type == DOOR // does not work, have maxhp 0 |
1057 |
|| op->flag [FLAG_MONSTER] |
1058 |
|| op->flag [FLAG_ALIVE] |
1059 |
|| op->flag [FLAG_GENERATOR])) |
1060 |
{ |
1061 |
stat_hp = 255 - (op->stats.hp * 255 + 254) / op->stats.maxhp; |
1062 |
stat_width = op->arch->max_x - op->arch->x; //TODO: should be upper-left edge |
1063 |
} |
1064 |
|
1065 |
if (expect_false (op->has_dialogue ())) |
1066 |
flags |= 1; |
1067 |
|
1068 |
if (expect_false (op->type == PLAYER)) |
1069 |
player = op == ob ? pl->ob->count |
1070 |
: op == pl->ob ? ob->count |
1071 |
: op->count; |
1072 |
} |
1073 |
|
1074 |
if (expect_false (lastcell.stat_hp != stat_hp)) |
1075 |
{ |
1076 |
lastcell.stat_hp = stat_hp; |
1077 |
|
1078 |
mask |= 0x8; |
1079 |
*last_ext |= 0x80; |
1080 |
last_ext = &sl[sl.length ()]; |
1081 |
|
1082 |
sl << uint8 (5) << uint8 (stat_hp); |
1083 |
|
1084 |
if (stat_width > 1) |
1085 |
{ |
1086 |
*last_ext |= 0x80; |
1087 |
last_ext = &sl[sl.length ()]; |
1088 |
|
1089 |
sl << uint8 (6) << uint8 (stat_width); |
1090 |
} |
1091 |
} |
1092 |
|
1093 |
if (expect_false (lastcell.player != player)) |
1094 |
{ |
1095 |
lastcell.player = player; |
1096 |
|
1097 |
mask |= 0x8; |
1098 |
*last_ext |= 0x80; |
1099 |
last_ext = &sl[sl.length ()]; |
1100 |
|
1101 |
sl << uint8 (0x47) << uint8 (4) << (uint32)player; |
1102 |
} |
1103 |
|
1104 |
if (expect_false (lastcell.flags != flags)) |
1105 |
{ |
1106 |
lastcell.flags = flags; |
1107 |
|
1108 |
mask |= 0x8; |
1109 |
*last_ext |= 0x80; |
1110 |
last_ext = &sl[sl.length ()]; |
1111 |
|
1112 |
sl << uint8 (8) << uint8 (flags); |
1113 |
} |
1114 |
|
1115 |
// faces |
1116 |
|
1117 |
/* Floor face */ |
1118 |
if (update_space (sl, socket, ms, lastcell, 2)) |
1119 |
mask |= 0x4; |
1120 |
|
1121 |
/* Middle face */ |
1122 |
if (update_space (sl, socket, ms, lastcell, 1)) |
1123 |
mask |= 0x2; |
1124 |
|
1125 |
if (expect_false (ob->invisible) |
1126 |
&& ob->invisible & (ob->invisible < 50 ? 1 : 7) |
1127 |
&& ms.player () == ob) |
1128 |
{ |
1129 |
// force player to be visible to himself if invisible |
1130 |
if (lastcell.faces[0] != ob->face) |
1131 |
{ |
1132 |
lastcell.faces[0] = ob->face; |
1133 |
|
1134 |
mask |= 0x1; |
1135 |
sl << uint16 (ob->face); |
1136 |
|
1137 |
socket.send_faces (ob); |
1138 |
} |
1139 |
} |
1140 |
/* Top face */ |
1141 |
else if (update_space (sl, socket, ms, lastcell, 0)) |
1142 |
mask |= 0x1; |
1143 |
|
1144 |
/* Check to see if we are in fact sending anything for this |
1145 |
* space by checking the mask. If so, update the mask. |
1146 |
* if not, reset the len to that from before adding the mask |
1147 |
* value, so we don't send those bits. |
1148 |
*/ |
1149 |
if (mask & 0xf) |
1150 |
sl[oldlen + 1] = mask & 0xff; |
1151 |
else |
1152 |
sl.reset (oldlen); |
1153 |
} /* else this is a viewable space */ |
1154 |
ordered_mapwalk_end |
1155 |
|
1156 |
socket.flush_fx (); |
1157 |
|
1158 |
if (sl.length () > startlen || socket.sent_scroll) |
1159 |
{ |
1160 |
socket.send_packet (sl); |
1161 |
socket.sent_scroll = 0; |
1162 |
} |
1163 |
} |
1164 |
|
1165 |
/** |
1166 |
* This looks for any spells the player may have that have changed their stats. |
1167 |
* it then sends an updspell packet for each spell that has changed in this way |
1168 |
*/ |
1169 |
void |
1170 |
esrv_update_spells (player *pl) |
1171 |
{ |
1172 |
if (!pl->ns) |
1173 |
return; |
1174 |
|
1175 |
pl->ns->update_spells = false; |
1176 |
|
1177 |
if (!pl->ns->monitor_spells) |
1178 |
return; |
1179 |
|
1180 |
for (object *spell = pl->ob->inv; spell; spell = spell->below) |
1181 |
if (spell->type == SPELL) |
1182 |
{ |
1183 |
int flags = 0; |
1184 |
int val; |
1185 |
|
1186 |
/* check if we need to update it */ |
1187 |
val = SP_level_spellpoint_cost (pl->ob, spell, SPELL_MANA); |
1188 |
if (spell->cached_sp != val) |
1189 |
{ |
1190 |
spell->cached_sp = val; |
1191 |
flags |= UPD_SP_MANA; |
1192 |
} |
1193 |
|
1194 |
val = SP_level_spellpoint_cost (pl->ob, spell, SPELL_GRACE); |
1195 |
if (spell->cached_grace != val) |
1196 |
{ |
1197 |
spell->cached_grace = val; |
1198 |
flags |= UPD_SP_GRACE; |
1199 |
} |
1200 |
|
1201 |
val = casting_level (pl->ob, spell); |
1202 |
if (spell->cached_eat != val) |
1203 |
{ |
1204 |
spell->cached_eat = val; |
1205 |
flags |= UPD_SP_LEVEL; |
1206 |
} |
1207 |
|
1208 |
if (flags) |
1209 |
{ |
1210 |
packet sl; |
1211 |
|
1212 |
sl << "updspell " |
1213 |
<< uint8 (flags) |
1214 |
<< uint32 (spell->count); |
1215 |
|
1216 |
if (flags & UPD_SP_MANA ) sl << uint16 (spell->cached_sp); |
1217 |
if (flags & UPD_SP_GRACE) sl << uint16 (spell->cached_grace); |
1218 |
if (flags & UPD_SP_LEVEL) sl << uint16 (spell->cached_eat); |
1219 |
|
1220 |
pl->ns->send_packet (sl); |
1221 |
} |
1222 |
} |
1223 |
} |
1224 |
|
1225 |
void |
1226 |
esrv_remove_spell (player *pl, object *spell) |
1227 |
{ |
1228 |
if (!pl->ns->monitor_spells) |
1229 |
return; |
1230 |
|
1231 |
if (!pl || !spell || spell->env != pl->ob) |
1232 |
{ |
1233 |
LOG (llevError, "Invalid call to esrv_remove_spell"); |
1234 |
return; |
1235 |
} |
1236 |
|
1237 |
packet sl ("delspell"); |
1238 |
|
1239 |
sl << uint32 (spell->count); |
1240 |
|
1241 |
pl->ns->send_packet (sl); |
1242 |
} |
1243 |
|
1244 |
/* appends the spell *spell to the Socklist we will send the data to. */ |
1245 |
static void |
1246 |
append_spell (player *pl, packet &sl, object *spell) |
1247 |
{ |
1248 |
int i, skill = 0; |
1249 |
|
1250 |
if (!(spell->name)) |
1251 |
{ |
1252 |
LOG (llevError, "item number %d is a spell with no name.\n", spell->count); |
1253 |
return; |
1254 |
} |
1255 |
|
1256 |
/* store costs and damage in the object struct, to compare to later */ |
1257 |
spell->cached_sp = SP_level_spellpoint_cost (pl->ob, spell, SPELL_MANA); |
1258 |
spell->cached_grace = SP_level_spellpoint_cost (pl->ob, spell, SPELL_GRACE); |
1259 |
spell->cached_eat = casting_level (pl->ob, spell); |
1260 |
|
1261 |
/* figure out which skill it uses, if it uses one */ |
1262 |
if (spell->skill) |
1263 |
if (object *tmp = pl->find_skill (spell->skill)) |
1264 |
skill = CS_STAT_SKILLINFO + SKILL_INDEX (tmp); |
1265 |
|
1266 |
// spells better have a face |
1267 |
if (!spell->face) |
1268 |
{ |
1269 |
LOG (llevError, "%s: spell has no face, but face is mandatory.\n", &spell->name); |
1270 |
spell->face = face_find ("burnout.x11", blank_face); |
1271 |
} |
1272 |
|
1273 |
pl->ns->send_face (spell->face); |
1274 |
|
1275 |
/* send the current values */ |
1276 |
sl << uint32 (spell->count) |
1277 |
<< uint16 (spell->level) |
1278 |
<< uint16 (spell->casting_time) |
1279 |
<< uint16 (spell->cached_sp) |
1280 |
<< uint16 (spell->cached_grace) |
1281 |
<< uint16 (spell->cached_eat) |
1282 |
<< uint8 (skill) |
1283 |
<< uint32 (spell->path_attuned) |
1284 |
<< uint32 (spell->face) |
1285 |
<< data8 (spell->name) |
1286 |
<< data16 (spell->msg); |
1287 |
} |
1288 |
|
1289 |
/** |
1290 |
* This tells the client to add the spell *ob, if *ob is NULL, then add |
1291 |
* all spells in the player's inventory. |
1292 |
*/ |
1293 |
void |
1294 |
esrv_add_spells (player *pl, object *spell) |
1295 |
{ |
1296 |
if (!pl) |
1297 |
{ |
1298 |
LOG (llevError, "esrv_add_spells, tried to add a spell to a NULL player"); |
1299 |
return; |
1300 |
} |
1301 |
|
1302 |
if (!pl->ns->monitor_spells) |
1303 |
return; |
1304 |
|
1305 |
packet sl ("addspell"); |
1306 |
|
1307 |
if (!spell) |
1308 |
{ |
1309 |
for (spell = pl->ob->inv; spell; spell = spell->below) |
1310 |
{ |
1311 |
/* were we to simply keep appending data here, we could exceed |
1312 |
* MAXSOCKBUF if the player has enough spells to add, we know that |
1313 |
* append_spells will always append 19 data bytes, plus 4 length |
1314 |
* bytes and 3 strings (because that is the spec) so we need to |
1315 |
* check that the length of those 3 strings, plus the 23 bytes, |
1316 |
* won't take us over the length limit for the socket, if it does, |
1317 |
* we need to send what we already have, and restart packet formation |
1318 |
*/ |
1319 |
if (spell->type != SPELL) |
1320 |
continue; |
1321 |
|
1322 |
/* Seeing crashes by overflowed buffers. Quick arithemetic seems |
1323 |
* to show add_spell is 26 bytes + 2 strings. However, the overun |
1324 |
* is hundreds of bytes off, so correcting 22 vs 26 doesn't seem |
1325 |
* like it will fix this |
1326 |
*/ |
1327 |
if (sl.length () > (MAXSOCKBUF - (26 + strlen (spell->name) + (spell->msg ? strlen (spell->msg) : 0)))) |
1328 |
{ |
1329 |
pl->ns->flush_fx (); |
1330 |
pl->ns->send_packet (sl); |
1331 |
|
1332 |
sl.reset (); |
1333 |
sl << "addspell "; |
1334 |
} |
1335 |
|
1336 |
append_spell (pl, sl, spell); |
1337 |
} |
1338 |
} |
1339 |
else if (spell->type != SPELL) |
1340 |
{ |
1341 |
LOG (llevError, "Asked to send a non-spell object as a spell"); |
1342 |
return; |
1343 |
} |
1344 |
else |
1345 |
append_spell (pl, sl, spell); |
1346 |
|
1347 |
if (sl.length () > MAXSOCKBUF) |
1348 |
cleanup ("buffer overflow in esrv_add_spells!"); |
1349 |
|
1350 |
/* finally, we can send the packet */ |
1351 |
pl->ns->flush_fx (); |
1352 |
pl->ns->send_packet (sl); |
1353 |
} |
1354 |
|
1355 |
//-GPL |
1356 |
|