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 Marc Alexander Lehmann / Robin Redeker / the Deliantra team |
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* Copyright (©) 2001,2007 Mark Wedel |
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* Copyright (©) 1992,2007 Frank Tore Johansen |
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* |
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* Deliantra 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 3 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, see <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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/** |
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* \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 |
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* |
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*/ |
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|
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#include <global.h> |
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#include <sproto.h> |
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|
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#include <living.h> |
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#include <commands.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> |
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#include <sys/time.h> |
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#include <sys/socket.h> |
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#include <netinet/in.h> |
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#include <netdb.h> |
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|
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#include <unistd.h> |
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#include <sys/time.h> |
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|
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#include "sounds.h" |
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|
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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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short atnr_cs_stat[NROFATTACKS] = { CS_STAT_RES_PHYS, |
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CS_STAT_RES_MAG, CS_STAT_RES_FIRE, CS_STAT_RES_ELEC, |
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CS_STAT_RES_COLD, CS_STAT_RES_CONF, CS_STAT_RES_ACID, |
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CS_STAT_RES_DRAIN, -1 /* weaponmagic */ , |
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CS_STAT_RES_GHOSTHIT, CS_STAT_RES_POISON, |
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CS_STAT_RES_SLOW, CS_STAT_RES_PARA, CS_STAT_TURN_UNDEAD, |
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CS_STAT_RES_FEAR, -1 /* Cancellation */ , |
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CS_STAT_RES_DEPLETE, CS_STAT_RES_DEATH, |
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-1 /* Chaos */ , -1 /* Counterspell */ , |
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-1 /* Godpower */ , 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 */ |
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}; |
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|
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static void |
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socket_map_scroll (client *ns, int dx, int dy) |
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{ |
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struct Map newmap; |
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int x, y, mx, my; |
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|
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ns->send_packet_printf ("map_scroll %d %d", dx, dy); |
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|
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/* If we are using the Map1aCmd, we may in fact send |
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* head information that is outside the viewable map. |
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* 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. |
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*/ |
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mx = ns->mapx; |
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my = ns->mapy; |
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|
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/* 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++) |
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for (y = 0; y < my; y++) |
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if (x >= ns->mapx || y >= ns->mapy) |
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/* clear cells outside the viewable area */ |
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memset (&newmap.cells[x][y], 0, sizeof (struct MapCell)); |
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else if ((x + dx) < 0 || (x + dx) >= ns->mapx || (y + dy) < 0 || (y + dy) >= ns->mapy) |
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/* clear newly visible tiles within the viewable area */ |
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memset (&(newmap.cells[x][y]), 0, sizeof (struct MapCell)); |
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else |
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memcpy (&(newmap.cells[x][y]), &(ns->lastmap.cells[x + dx][y + dy]), sizeof (struct MapCell)); |
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|
119 |
memcpy (&(ns->lastmap), &newmap, sizeof (struct Map)); |
120 |
|
121 |
/* Make sure that the next "map1" command will be sent (even if it is |
122 |
* empty). |
123 |
*/ |
124 |
ns->sent_scroll = 1; |
125 |
} |
126 |
|
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static void |
128 |
clear_map (player *pl) |
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{ |
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pl->ns->mapinfo_queue_clear (); |
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|
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memset (&pl->ns->lastmap, 0, sizeof (pl->ns->lastmap)); |
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|
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pl->ns->force_newmap = false; |
135 |
|
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if (pl->ns->newmapcmd == 1) |
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pl->ns->send_packet ("newmap"); |
138 |
|
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pl->ns->floorbox_reset (); |
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} |
141 |
|
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static void |
143 |
send_map_info (player *pl) |
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{ |
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client &socket = *pl->ns; |
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object *ob = pl->observe; |
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|
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if (socket.mapinfocmd) |
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{ |
150 |
if (ob->map && ob->map->path[0]) |
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{ |
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int flags = 0; |
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|
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if (ob->map->tile_path[0]) flags |= 1; |
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if (ob->map->tile_path[1]) flags |= 2; |
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if (ob->map->tile_path[2]) flags |= 4; |
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if (ob->map->tile_path[3]) flags |= 8; |
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|
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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, |
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ob->map->width, ob->map->height, &ob->map->path); |
162 |
} |
163 |
else |
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socket.send_packet ("mapinfo current"); |
165 |
} |
166 |
} |
167 |
|
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/** check for map/region change and send new map data */ |
169 |
static void |
170 |
check_map_change (player *pl) |
171 |
{ |
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client &socket = *pl->ns; |
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object *ob = pl->observe; |
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|
175 |
region *reg = ob->region (); |
176 |
if (socket.current_region != reg) |
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{ |
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INVOKE_PLAYER (REGION_CHANGE, pl, ARG_REGION (reg), ARG_REGION (socket.current_region)); |
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socket.current_region = reg; |
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} |
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|
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// first try to aovid a full newmap on tiled map scrolls |
183 |
if (socket.current_map != ob->map && !socket.force_newmap) |
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{ |
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rv_vector rv; |
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|
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get_rangevector_from_mapcoord (socket.current_map, socket.current_x, socket.current_y, ob, &rv, 0); |
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|
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// manhattan distance is very handy here |
190 |
if (rv.distance < 8) // 8 works nicely for speed << 70 and buggy gcfclient |
191 |
{ |
192 |
socket.current_map = ob->map; |
193 |
socket.current_x = ob->x; |
194 |
socket.current_y = ob->y; |
195 |
|
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socket_map_scroll (&socket, rv.distance_x, rv.distance_y); |
197 |
socket.floorbox_reset (); |
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send_map_info (pl); |
199 |
} |
200 |
} |
201 |
|
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if (socket.current_map != ob->map || socket.force_newmap) |
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{ |
204 |
clear_map (pl); |
205 |
socket.current_map = ob->map; |
206 |
send_map_info (pl); |
207 |
} |
208 |
else if (socket.current_x != ob->x || socket.current_y != ob->y) |
209 |
{ |
210 |
int dx = ob->x - socket.current_x; |
211 |
int dy = ob->y - socket.current_y; |
212 |
|
213 |
socket_map_scroll (&socket, ob->x - socket.current_x, ob->y - socket.current_y); |
214 |
socket.floorbox_reset (); |
215 |
} |
216 |
|
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socket.current_x = ob->x; |
218 |
socket.current_y = ob->y; |
219 |
} |
220 |
|
221 |
/** |
222 |
* RequestInfo is sort of a meta command. There is some specific |
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* request of information, but we call other functions to provide |
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* that information. |
225 |
*/ |
226 |
void |
227 |
RequestInfo (char *buf, int len, client *ns) |
228 |
{ |
229 |
char *params; |
230 |
|
231 |
/* find the first space, make it null, and update the |
232 |
* params pointer. |
233 |
*/ |
234 |
for (params = buf; *params; params++) |
235 |
if (*params == ' ') |
236 |
{ |
237 |
*params++ = 0; |
238 |
break; |
239 |
} |
240 |
|
241 |
if (!strcmp (buf, "image_info")) |
242 |
send_image_info (ns, params); |
243 |
else if (!strcmp (buf, "image_sums")) |
244 |
send_image_sums (ns, params); |
245 |
else if (!strcmp (buf, "skill_info")) |
246 |
send_skill_info (ns, params); |
247 |
else if (!strcmp (buf, "spell_paths")) |
248 |
send_spell_paths (ns, params); |
249 |
else |
250 |
{ |
251 |
// undo tokenisation above and send replyinfo with the request unchanged |
252 |
if (*params) |
253 |
*--params = ' '; |
254 |
|
255 |
ns->send_packet_printf ("replyinfo %s", buf); |
256 |
} |
257 |
} |
258 |
|
259 |
void |
260 |
ExtCmd (char *buf, int len, player *pl) |
261 |
{ |
262 |
INVOKE_PLAYER (EXTCMD, pl, ARG_DATA (buf, len)); |
263 |
} |
264 |
|
265 |
void |
266 |
ExtiCmd (char *buf, int len, client *ns) |
267 |
{ |
268 |
INVOKE_CLIENT (EXTICMD, ns, ARG_DATA (buf, len)); |
269 |
} |
270 |
|
271 |
void |
272 |
client::mapinfo_queue_clear () |
273 |
{ |
274 |
for (auto (i, mapinfo_queue.begin ()); i != mapinfo_queue.end (); ++i) |
275 |
free (*i); |
276 |
|
277 |
mapinfo_queue.clear (); |
278 |
} |
279 |
|
280 |
bool |
281 |
client::mapinfo_try (char *buf) |
282 |
{ |
283 |
char *token = buf; |
284 |
buf += strlen (buf) + 9; |
285 |
|
286 |
// initial map and its origin |
287 |
maptile *map = pl->observe->map; |
288 |
int mapx = pl->ns->mapx / 2 - pl->observe->x; |
289 |
int mapy = pl->ns->mapy / 2 - pl->observe->y; |
290 |
int max_distance = 8; // limit maximum path length to something generous |
291 |
|
292 |
while (*buf && map && max_distance) |
293 |
{ |
294 |
int dir = *buf++ - '1'; |
295 |
|
296 |
if (dir >= 0 && dir <= 3) |
297 |
{ |
298 |
if (!map->tile_path [dir]) |
299 |
map = 0; |
300 |
else if (map->tile_available (dir, false)) |
301 |
{ |
302 |
maptile *neigh = map->tile_map [dir]; |
303 |
|
304 |
switch (dir) |
305 |
{ |
306 |
case 0: mapy -= neigh->height; break; |
307 |
case 2: mapy += map ->height; break; |
308 |
case 3: mapx -= neigh->width ; break; |
309 |
case 1: mapx += map ->width ; break; |
310 |
} |
311 |
|
312 |
map = neigh; |
313 |
--max_distance; |
314 |
} |
315 |
else |
316 |
return 0; |
317 |
} |
318 |
else |
319 |
max_distance = 0; |
320 |
} |
321 |
|
322 |
if (!max_distance) |
323 |
send_packet_printf ("mapinfo %s error", token); |
324 |
else if (!map || !map->path) |
325 |
send_packet_printf ("mapinfo %s nomap", token); |
326 |
else |
327 |
{ |
328 |
int flags = 0; |
329 |
|
330 |
if (map->tile_path[0]) flags |= 1; |
331 |
if (map->tile_path[1]) flags |= 2; |
332 |
if (map->tile_path[2]) flags |= 4; |
333 |
if (map->tile_path[3]) flags |= 8; |
334 |
|
335 |
send_packet_printf ("mapinfo %s spatial %d %d %d %d %d %s", token, flags, mapx, mapy, map->width, map->height, &map->path); |
336 |
} |
337 |
|
338 |
return 1; |
339 |
} |
340 |
|
341 |
void |
342 |
client::mapinfo_queue_run () |
343 |
{ |
344 |
if (mapinfo_queue.empty () || !pl) |
345 |
return; |
346 |
|
347 |
for (int i = 0; i < mapinfo_queue.size (); ++i) |
348 |
if (mapinfo_try (mapinfo_queue [i])) |
349 |
{ |
350 |
free (mapinfo_queue [i]); |
351 |
mapinfo_queue.erase (i); |
352 |
} |
353 |
else |
354 |
++i; |
355 |
} |
356 |
|
357 |
void |
358 |
MapInfoCmd (char *buf, int len, player *pl) |
359 |
{ |
360 |
// <mapinfo tag spatial tile-path |
361 |
// >mapinfo tag spatial flags x y w h hash |
362 |
|
363 |
char *token = buf; |
364 |
|
365 |
if (!(buf = strchr (buf, ' '))) |
366 |
return; |
367 |
|
368 |
if (!strncmp (buf, " spatial ", 9)) |
369 |
{ |
370 |
char *copy = strdup (token); |
371 |
copy [buf - token] = 0; |
372 |
|
373 |
#if 0 |
374 |
// this makes only sense when we flush the buffer immediately |
375 |
if (pl->ns->mapinfo_try (copy)) |
376 |
free (copy); |
377 |
else |
378 |
#endif |
379 |
pl->ns->mapinfo_queue.push_back (copy); |
380 |
} |
381 |
else |
382 |
pl->ns->send_packet_printf ("mapinfo %s unsupported", token); |
383 |
} |
384 |
|
385 |
/** This is the Setup cmd */ |
386 |
void |
387 |
SetUp (char *buf, int len, client * ns) |
388 |
{ |
389 |
INVOKE_CLIENT (SETUP, ns, ARG_DATA (buf, len)); |
390 |
} |
391 |
|
392 |
/** |
393 |
* The client has requested to be added to the game. |
394 |
* This is what takes care of it. We tell the client how things worked out. |
395 |
* I am not sure if this file is the best place for this function. however, |
396 |
* it either has to be here or init_sockets needs to be exported. |
397 |
*/ |
398 |
void |
399 |
AddMeCmd (char *buf, int len, client *ns) |
400 |
{ |
401 |
INVOKE_CLIENT (ADDME, ns, ARG_DATA (buf, len)); |
402 |
} |
403 |
|
404 |
/* |
405 |
#define MSG_TYPE_BOOK 1 |
406 |
#define MSG_TYPE_CARD 2 |
407 |
#define MSG_TYPE_PAPER 3 |
408 |
#define MSG_TYPE_SIGN 4 |
409 |
#define MSG_TYPE_MONUMENT 5 |
410 |
#define MSG_TYPE_SCRIPTED_DIALOG 6*/ |
411 |
|
412 |
/** Reply to ExtendedInfos command */ |
413 |
void |
414 |
ToggleExtendedText (char *buf, int len, client * ns) |
415 |
{ |
416 |
char cmdback[MAX_BUF]; |
417 |
char temp[10]; |
418 |
char command[50]; |
419 |
int info, nextinfo, i, flag; |
420 |
|
421 |
cmdback[0] = '\0'; |
422 |
|
423 |
nextinfo = 0; |
424 |
while (1) |
425 |
{ |
426 |
/* 1. Extract an info */ |
427 |
info = nextinfo; |
428 |
|
429 |
while ((info < len) && (buf[info] == ' ')) |
430 |
info++; |
431 |
|
432 |
if (info >= len) |
433 |
break; |
434 |
|
435 |
nextinfo = info + 1; |
436 |
|
437 |
while ((nextinfo < len) && (buf[nextinfo] != ' ')) |
438 |
nextinfo++; |
439 |
|
440 |
if (nextinfo - info >= 49) /*Erroneous info asked */ |
441 |
continue; |
442 |
|
443 |
strncpy (command, &(buf[info]), nextinfo - info); |
444 |
command[nextinfo - info] = '\0'; |
445 |
/* 2. Interpret info */ |
446 |
i = sscanf (command, "%d", &flag); |
447 |
|
448 |
if ((i == 1) && (flag > 0) && (flag <= MSG_TYPE_LAST)) |
449 |
ns->supported_readables |= (1 << flag); |
450 |
/*3. Next info */ |
451 |
} |
452 |
|
453 |
/* Send resulting state */ |
454 |
strcpy (cmdback, "ExtendedTextSet"); |
455 |
|
456 |
for (i = 0; i <= MSG_TYPE_LAST; i++) |
457 |
if (ns->supported_readables & (1 << i)) |
458 |
{ |
459 |
strcat (cmdback, " "); |
460 |
snprintf (temp, sizeof (temp), "%d", i); |
461 |
strcat (cmdback, temp); |
462 |
} |
463 |
|
464 |
ns->send_packet (cmdback); |
465 |
} |
466 |
|
467 |
/** |
468 |
* This handles the general commands from the client (ie, north, fire, cast, |
469 |
* etc.) |
470 |
*/ |
471 |
void |
472 |
PlayerCmd (char *buf, int len, player *pl) |
473 |
{ |
474 |
/* Check if there is a count. In theory, a zero count could also be |
475 |
* sent, so check for that also. |
476 |
*/ |
477 |
if (atoi (buf) || buf[0] == '0') |
478 |
{ |
479 |
pl->count = atoi ((char *) buf); |
480 |
|
481 |
buf = strchr (buf, ' '); /* advance beyond the numbers */ |
482 |
if (!buf) |
483 |
return; |
484 |
|
485 |
buf++; |
486 |
} |
487 |
|
488 |
execute_newserver_command (pl->ob, (char *) buf); |
489 |
|
490 |
/* Perhaps something better should be done with a left over count. |
491 |
* Cleaning up the input should probably be done first - all actions |
492 |
* for the command that issued the count should be done before any other |
493 |
* commands. |
494 |
*/ |
495 |
pl->count = 0; |
496 |
} |
497 |
|
498 |
/** |
499 |
* This handles the general commands from the client (ie, north, fire, cast, |
500 |
* etc.). It is a lot like PlayerCmd above, but is called with the |
501 |
* 'ncom' method which gives more information back to the client so it |
502 |
* can throttle. |
503 |
*/ |
504 |
void |
505 |
NewPlayerCmd (char *buf, int len, player *pl) |
506 |
{ |
507 |
if (len <= 6) |
508 |
{ |
509 |
LOG (llevDebug, "%s: corrupt ncom command <%s>: not long enough (%d) - discarding\n", pl->ns->host, buf, len); |
510 |
return; |
511 |
} |
512 |
|
513 |
uint16 cmdid = net_uint16 ((uint8 *)buf); |
514 |
sint32 repeat = net_sint32 ((uint8 *)buf + 2); |
515 |
|
516 |
/* -1 is special - no repeat, but don't update */ |
517 |
if (repeat != -1) |
518 |
pl->count = repeat; |
519 |
|
520 |
buf += 6; //len -= 6; |
521 |
|
522 |
execute_newserver_command (pl->ob, buf); |
523 |
|
524 |
/* Perhaps something better should be done with a left over count. |
525 |
* Cleaning up the input should probably be done first - all actions |
526 |
* for the command that issued the count should be done before any other |
527 |
* commands. |
528 |
*/ |
529 |
pl->count = 0; |
530 |
|
531 |
//TODO: schmorp thinks whatever this calculates, it makes no sense at all |
532 |
int time = fabs (pl->ob->speed) < 0.001 |
533 |
? time = MAX_TIME * 100 |
534 |
: time = (int) (MAX_TIME / fabs (pl->ob->speed)); |
535 |
|
536 |
/* Send confirmation of command execution now */ |
537 |
packet sl ("comc"); |
538 |
sl << uint16 (cmdid) << uint32 (time); |
539 |
pl->ns->send_packet (sl); |
540 |
} |
541 |
|
542 |
/** This is a reply to a previous query. */ |
543 |
void |
544 |
ReplyCmd (char *buf, int len, client *ns) |
545 |
{ |
546 |
if (ns->state == ST_CUSTOM) |
547 |
{ |
548 |
INVOKE_CLIENT (REPLY, ns, ARG_DATA (buf, len)); |
549 |
return; |
550 |
} |
551 |
|
552 |
if (!ns->pl) |
553 |
return; //TODO: depends on the exact reply we are after |
554 |
//TODO: but right now, we always have a ns->pl |
555 |
|
556 |
player *pl = ns->pl; |
557 |
|
558 |
/* This is to synthesize how the data would be stored if it |
559 |
* was normally entered. A bit of a hack, and should be cleaned up |
560 |
* once all the X11 code is removed from the server. |
561 |
* |
562 |
* We pass 13 to many of the functions because this way they |
563 |
* think it was the carriage return that was entered, and the |
564 |
* function then does not try to do additional input. |
565 |
*/ |
566 |
snprintf (pl->write_buf, sizeof (pl->write_buf), ":%s", buf); |
567 |
|
568 |
/* this avoids any hacking here */ |
569 |
|
570 |
switch (ns->state) |
571 |
{ |
572 |
case ST_PLAYING: |
573 |
LOG (llevError, "Got reply message with ST_PLAYING input state\n"); |
574 |
break; |
575 |
|
576 |
case ST_GET_PARTY_PASSWORD: /* Get password for party */ |
577 |
receive_party_password (pl->ob, 13); |
578 |
break; |
579 |
|
580 |
default: |
581 |
LOG (llevError, "Unknown input state: %d\n", ns->state); |
582 |
} |
583 |
} |
584 |
|
585 |
/** |
586 |
* Client tells its version. If there is a mismatch, we close the |
587 |
* socket. In real life, all we should care about is the client having |
588 |
* something older than the server. If we assume the client will be |
589 |
* backwards compatible, having it be a later version should not be a |
590 |
* problem. |
591 |
*/ |
592 |
void |
593 |
VersionCmd (char *buf, int len, client * ns) |
594 |
{ |
595 |
if (!buf) |
596 |
{ |
597 |
LOG (llevError, "CS: received corrupted version command\n"); |
598 |
return; |
599 |
} |
600 |
|
601 |
ns->cs_version = atoi (buf); |
602 |
ns->sc_version = ns->cs_version; |
603 |
|
604 |
LOG (llevDebug, "connection from client <%s>\n", buf); |
605 |
|
606 |
//TODO: should log here just for statistics |
607 |
|
608 |
//if (VERSION_CS != ns->cs_version) |
609 |
// unchecked; |
610 |
|
611 |
char *cp = strchr (buf + 1, ' '); |
612 |
if (!cp) |
613 |
return; |
614 |
|
615 |
ns->sc_version = atoi (cp); |
616 |
|
617 |
//if (VERSION_SC != ns->sc_version) |
618 |
// unchecked; |
619 |
|
620 |
cp = strchr (cp + 1, ' '); |
621 |
|
622 |
if (cp) |
623 |
{ |
624 |
ns->version = cp + 1; |
625 |
|
626 |
if (ns->sc_version < 1026) |
627 |
ns->send_packet_printf ("drawinfo %d %s", NDI_RED, |
628 |
"**** VERSION WARNING ****\n**** CLIENT IS TOO OLD!! UPDATE THE CLIENT!! ****"); |
629 |
} |
630 |
} |
631 |
|
632 |
/** sound related functions. */ |
633 |
void |
634 |
SetSound (char *buf, int len, client * ns) |
635 |
{ |
636 |
ns->sound = atoi (buf); |
637 |
} |
638 |
|
639 |
/** client wants the map resent */ |
640 |
void |
641 |
MapRedrawCmd (char *buf, int len, player *pl) |
642 |
{ |
643 |
/* This function is currently disabled; just clearing the map state results in |
644 |
* display errors. It should clear the cache and send a newmap command. |
645 |
* Unfortunately this solution does not work because some client versions send |
646 |
* a mapredraw command after receiving a newmap command. |
647 |
*/ |
648 |
} |
649 |
|
650 |
/** |
651 |
* Moves an object (typically, container to inventory). |
652 |
* syntax is: move (to) (tag) (nrof) |
653 |
*/ |
654 |
void |
655 |
MoveCmd (char *buf, int len, player *pl) |
656 |
{ |
657 |
int to, tag, nrof; |
658 |
|
659 |
if (3 != sscanf (buf, "%d %d %d", &to, &tag, &nrof)) |
660 |
{ |
661 |
LOG (llevError, "Incomplete move command: %s\n", buf); |
662 |
return; |
663 |
} |
664 |
|
665 |
esrv_move_object (pl->ob, to, tag, nrof); |
666 |
} |
667 |
|
668 |
/****************************************************************************** |
669 |
* |
670 |
* Start of commands the server sends to the client. |
671 |
* |
672 |
******************************************************************************/ |
673 |
|
674 |
/** |
675 |
* Asks the client to query the user. This way, the client knows |
676 |
* it needs to send something back (vs just printing out a message) |
677 |
*/ |
678 |
void |
679 |
send_query (client *ns, uint8 flags, const char *text) |
680 |
{ |
681 |
ns->send_packet_printf ("query %d %s", flags, text ? text : ""); |
682 |
} |
683 |
|
684 |
/** |
685 |
* Get player's current range attack in obuf. |
686 |
*/ |
687 |
static void |
688 |
rangetostring (player *pl, char *obuf) |
689 |
{ |
690 |
dynbuf_text buf; |
691 |
|
692 |
if (pl->ranged_ob) |
693 |
buf << " Range" << (pl->ob->current_weapon == pl->ranged_ob ? "*" : "") << ": " << pl->ranged_ob->name; |
694 |
|
695 |
if (pl->combat_ob) |
696 |
buf << " Combat" << (pl->ob->current_weapon == pl->combat_ob ? "*" : "") << ": " << pl->combat_ob->name; |
697 |
|
698 |
#if 0 |
699 |
//TODO: remove this when slot system is working, this is only for debugging |
700 |
if (pl->ob->chosen_skill) |
701 |
buf << " Skill*: " << pl->ob->chosen_skill->name; |
702 |
#endif |
703 |
|
704 |
//TODO: maybe golem should become the current_weapon, quite simply? |
705 |
if (pl->golem) |
706 |
buf << " Golem*: " << pl->golem->name; |
707 |
|
708 |
buf << '\0'; |
709 |
buf.linearise (obuf); |
710 |
} |
711 |
|
712 |
#define AddIfInt64(Old,New,Type) if (Old != New) {\ |
713 |
Old = New; \ |
714 |
sl << uint8 (Type) << uint64 (New); \ |
715 |
} |
716 |
|
717 |
#define AddIfInt(Old,New,Type) if (Old != New) {\ |
718 |
Old = New; \ |
719 |
sl << uint8 (Type) << uint32 (New); \ |
720 |
} |
721 |
|
722 |
#define AddIfShort(Old,New,Type) if (Old != New) {\ |
723 |
Old = New; \ |
724 |
sl << uint8 (Type) << uint16 (New); \ |
725 |
} |
726 |
|
727 |
#define AddIfFloat(Old,New,Type,mult) if (Old != New) {\ |
728 |
Old = New; \ |
729 |
sl << uint8 (Type) << uint32 (New*FLOAT_MULTI*mult); \ |
730 |
} |
731 |
|
732 |
#define AddIfString(Old,New,Type) if (Old == NULL || strcmp(Old,New)) {\ |
733 |
free(Old); Old = strdup (New);\ |
734 |
sl << uint8 (Type) << data8 (New); \ |
735 |
} |
736 |
|
737 |
/** |
738 |
* Sends a statistics update. We look at the old values, |
739 |
* and only send what has changed. Stat mapping values are in newclient.h |
740 |
* Since this gets sent a lot, this is actually one of the few binary |
741 |
* commands for now. |
742 |
*/ |
743 |
void |
744 |
esrv_update_stats (player *pl) |
745 |
{ |
746 |
char buf[MAX_BUF]; |
747 |
uint16 flags; |
748 |
|
749 |
client *ns = pl->ns; |
750 |
if (!ns) |
751 |
return; |
752 |
|
753 |
object *ob = pl->observe; |
754 |
if (!ob) |
755 |
return; |
756 |
|
757 |
player *opl = ob->contr ? static_cast<player *>(ob->contr) : pl; |
758 |
|
759 |
packet sl ("stats"); |
760 |
|
761 |
AddIfShort (ns->last_stats.hp, ob->stats.hp, CS_STAT_HP); |
762 |
AddIfShort (ns->last_stats.maxhp, ob->stats.maxhp, CS_STAT_MAXHP); |
763 |
AddIfShort (ns->last_stats.sp, ob->stats.sp, CS_STAT_SP); |
764 |
AddIfShort (ns->last_stats.maxsp, ob->stats.maxsp, CS_STAT_MAXSP); |
765 |
AddIfShort (ns->last_stats.grace, ob->stats.grace, CS_STAT_GRACE); |
766 |
AddIfShort (ns->last_stats.maxgrace, ob->stats.maxgrace, CS_STAT_MAXGRACE); |
767 |
AddIfShort (ns->last_stats.Str, ob->stats.Str, CS_STAT_STR); |
768 |
AddIfShort (ns->last_stats.Dex, ob->stats.Dex, CS_STAT_DEX); |
769 |
AddIfShort (ns->last_stats.Con, ob->stats.Con, CS_STAT_CON); |
770 |
AddIfShort (ns->last_stats.Int, ob->stats.Int, CS_STAT_INT); |
771 |
AddIfShort (ns->last_stats.Wis, ob->stats.Wis, CS_STAT_WIS); |
772 |
AddIfShort (ns->last_stats.Pow, ob->stats.Pow, CS_STAT_POW); |
773 |
AddIfShort (ns->last_stats.Cha, ob->stats.Cha, CS_STAT_CHA); |
774 |
|
775 |
for (int s = 0; s < NUM_SKILLS; s++) |
776 |
if (object *skill = opl->last_skill_ob [s]) |
777 |
if (skill->stats.exp != ns->last_skill_exp [s]) |
778 |
{ |
779 |
ns->last_skill_exp [s] = skill->stats.exp; |
780 |
|
781 |
/* Always send along the level if exp changes. This is only |
782 |
* 1 extra byte, but keeps processing simpler. |
783 |
*/ |
784 |
sl << uint8 (s + CS_STAT_SKILLINFO) |
785 |
<< uint8 (skill->level) |
786 |
<< uint64 (skill->stats.exp); |
787 |
} |
788 |
|
789 |
AddIfInt64 (ns->last_stats.exp, ob->stats.exp, CS_STAT_EXP64); |
790 |
AddIfShort (ns->last_level, ob->level, CS_STAT_LEVEL); |
791 |
AddIfShort (ns->last_stats.wc, ob->stats.wc, CS_STAT_WC); |
792 |
AddIfShort (ns->last_stats.ac, ob->stats.ac, CS_STAT_AC); |
793 |
AddIfShort (ns->last_stats.dam, ob->stats.dam, CS_STAT_DAM); |
794 |
AddIfFloat (ns->last_speed, ob->speed, CS_STAT_SPEED, 1.f/TICK); |
795 |
AddIfShort (ns->last_stats.food, ob->stats.food, CS_STAT_FOOD); |
796 |
AddIfFloat (ns->last_weapon_sp, pl->weapon_sp, CS_STAT_WEAP_SP, 1.f/TICK); |
797 |
AddIfInt (ns->last_weight_limit, weight_limit[ob->stats.Str], CS_STAT_WEIGHT_LIM); |
798 |
|
799 |
flags = 0; |
800 |
|
801 |
if (opl->fire_on) |
802 |
flags |= SF_FIREON; |
803 |
|
804 |
if (opl->run_on) |
805 |
flags |= SF_RUNON; |
806 |
|
807 |
AddIfShort (ns->last_flags, flags, CS_STAT_FLAGS); |
808 |
|
809 |
if (ns->sc_version < 1025) |
810 |
{ AddIfShort (ns->last_resist[ATNR_PHYSICAL], ob->resist[ATNR_PHYSICAL], CS_STAT_ARMOUR) } |
811 |
else |
812 |
for (int i = 0; i < NROFATTACKS; i++) |
813 |
{ |
814 |
/* Skip ones we won't send */ |
815 |
if (atnr_cs_stat[i] == -1) |
816 |
continue; |
817 |
|
818 |
AddIfShort (ns->last_resist[i], ob->resist[i], atnr_cs_stat[i]); |
819 |
} |
820 |
|
821 |
if (pl->ns->monitor_spells) |
822 |
{ |
823 |
AddIfInt (ns->last_path_attuned, ob->path_attuned, CS_STAT_SPELL_ATTUNE); |
824 |
AddIfInt (ns->last_path_repelled, ob->path_repelled, CS_STAT_SPELL_REPEL); |
825 |
AddIfInt (ns->last_path_denied, ob->path_denied, CS_STAT_SPELL_DENY); |
826 |
} |
827 |
|
828 |
rangetostring (opl, buf); /* we want use the new fire & run system in new client */ |
829 |
AddIfString (ns->stats.range, buf, CS_STAT_RANGE); |
830 |
set_title (ob, buf); |
831 |
AddIfString (ns->stats.title, buf, CS_STAT_TITLE); |
832 |
|
833 |
/* Only send it away if we have some actual data */ |
834 |
if (sl.length () > 6) |
835 |
ns->send_packet (sl); |
836 |
} |
837 |
|
838 |
/** |
839 |
* Tells the client that here is a player it should start using. |
840 |
*/ |
841 |
void |
842 |
esrv_new_player (player *pl) |
843 |
{ |
844 |
sint32 weight = pl->ob->client_weight (); |
845 |
|
846 |
packet sl ("player"); |
847 |
|
848 |
sl << uint32 (pl->ob->count) |
849 |
<< uint32 (weight) |
850 |
<< uint32 (pl->ob->face) |
851 |
<< data8 (pl->ob->name); |
852 |
|
853 |
pl->ns->last_weight = weight; |
854 |
pl->ns->send_packet (sl); |
855 |
} |
856 |
|
857 |
/****************************************************************************** |
858 |
* |
859 |
* Start of map related commands. |
860 |
* |
861 |
******************************************************************************/ |
862 |
|
863 |
/** Clears a map cell */ |
864 |
static void |
865 |
map_clearcell (struct MapCell *cell, int count) |
866 |
{ |
867 |
cell->faces[0] = 0; |
868 |
cell->faces[1] = 0; |
869 |
cell->faces[2] = 0; |
870 |
cell->smooth[0] = 0; |
871 |
cell->smooth[1] = 0; |
872 |
cell->smooth[2] = 0; |
873 |
cell->count = count; |
874 |
cell->stat_hp = 0; |
875 |
cell->flags = 0; |
876 |
cell->player = 0; |
877 |
} |
878 |
|
879 |
#define MAX_LAYERS 3 |
880 |
|
881 |
/** |
882 |
* Removes the need to replicate the same code for each layer. |
883 |
* this returns true if this space is now in fact different than |
884 |
* it was. |
885 |
* sl is the socklist this data is going into. |
886 |
* ns is the socket we are working on - all the info we care |
887 |
* about is in this socket structure, so now need not pass the |
888 |
* entire player object. |
889 |
* layer is the layer to update, with 2 being the floor and 0 the |
890 |
* top layer (this matches what the GET_MAP_FACE and GET_MAP_FACE_OBJ) |
891 |
* take. Interesting to note that before this function, the map1 function |
892 |
* numbers the spaces differently - I think this was a leftover from |
893 |
* the map command, where the faces stack up. Sinces that is no longer |
894 |
* the case, it seems to make more sense to have these layer values |
895 |
* actually match. |
896 |
*/ |
897 |
static int |
898 |
update_space (packet &sl, client &ns, mapspace &ms, MapCell &lastcell, int layer) |
899 |
{ |
900 |
object *ob = ms.faces_obj [layer]; |
901 |
|
902 |
/* If there is no object for this space, or if the face for the object |
903 |
* is the blank face, set the face number to zero. |
904 |
* else if we have the stored head object for this space, that takes |
905 |
* precedence over the other object for this space. |
906 |
* otherwise, we do special head processing |
907 |
*/ |
908 |
uint16 face_num = ob && ob->face != blank_face ? ob->face : 0; |
909 |
|
910 |
/* We've gotten what face we want to use for the object. Now see if |
911 |
* if it has changed since we last sent it to the client. |
912 |
*/ |
913 |
if (lastcell.faces[layer] != face_num) |
914 |
{ |
915 |
lastcell.faces[layer] = face_num; |
916 |
|
917 |
if (!ns.faces_sent[face_num]) |
918 |
if (ob) |
919 |
ns.send_faces (ob); |
920 |
else |
921 |
ns.send_face (face_num, 10); |
922 |
|
923 |
sl << uint16 (face_num); |
924 |
return 1; |
925 |
} |
926 |
|
927 |
/* Nothing changed */ |
928 |
return 0; |
929 |
} |
930 |
|
931 |
// prefetch (and touch) all maps within a specific distancd |
932 |
static void |
933 |
prefetch_surrounding_maps (maptile *map, int distance) |
934 |
{ |
935 |
map->touch (); |
936 |
|
937 |
if (--distance) |
938 |
for (int dir = 4; --dir; ) |
939 |
if (const shstr &path = map->tile_path [dir]) |
940 |
if (maptile *&neigh = map->tile_map [dir]) |
941 |
prefetch_surrounding_maps (neigh, distance); |
942 |
else |
943 |
neigh = maptile::find_async (path, map); |
944 |
} |
945 |
|
946 |
// prefetch a generous area around the player |
947 |
static void |
948 |
prefetch_surrounding_maps (object *op) |
949 |
{ |
950 |
prefetch_surrounding_maps (op->map, 3); |
951 |
} |
952 |
|
953 |
/** |
954 |
* Draws client map. |
955 |
*/ |
956 |
void |
957 |
draw_client_map (player *pl) |
958 |
{ |
959 |
object *ob = pl->observe; |
960 |
if (!ob->active) |
961 |
return; |
962 |
|
963 |
/* If player is just joining the game, he isn't here yet, so the map |
964 |
* can get swapped out. If so, don't try to send them a map. All will |
965 |
* be OK once they really log in. |
966 |
*/ |
967 |
if (!ob->map || ob->map->in_memory != MAP_ACTIVE) |
968 |
return; |
969 |
|
970 |
int startlen, oldlen; |
971 |
|
972 |
check_map_change (pl); |
973 |
prefetch_surrounding_maps (pl->ob); |
974 |
|
975 |
/* do LOS after calls to update_position */ |
976 |
/* unfortunately, we need to udpate los when observing, currently */ |
977 |
if (pl->do_los || pl->observe != pl->ob) |
978 |
{ |
979 |
pl->do_los = 0; |
980 |
pl->update_los (); |
981 |
} |
982 |
|
983 |
/** |
984 |
* This function uses the new map1 protocol command to send the map |
985 |
* to the client. It is necessary because the old map command supports |
986 |
* a maximum map size of 15x15. |
987 |
* This function is much simpler than the old one. This is because |
988 |
* the old function optimized to send as few face identifiers as possible, |
989 |
* at the expense of sending more coordinate location (coordinates were |
990 |
* only 1 byte, faces 2 bytes, so this was a worthwhile savings). Since |
991 |
* we need 2 bytes for coordinates and 2 bytes for faces, such a trade off |
992 |
* maps no sense. Instead, we actually really only use 12 bits for coordinates, |
993 |
* and use the other 4 bits for other informatiion. For full documentation |
994 |
* of what we send, see the doc/Protocol file. |
995 |
* I will describe internally what we do: |
996 |
* the ns->lastmap shows how the map last looked when sent to the client. |
997 |
* in the lastmap structure, there is a cells array, which is set to the |
998 |
* maximum viewable size (As set in config.h). |
999 |
* in the cells, there are faces and a count value. |
1000 |
* we use the count value to hold the darkness value. If -1, then this space |
1001 |
* is not viewable. |
1002 |
* we use faces[0] faces[1] faces[2] to hold what the three layers |
1003 |
* look like. |
1004 |
*/ |
1005 |
|
1006 |
client &socket = *pl->ns; |
1007 |
|
1008 |
packet sl (socket.mapmode == Map1Cmd ? "map1" : "map1a"); |
1009 |
|
1010 |
startlen = sl.length (); |
1011 |
|
1012 |
int hx = socket.mapx / 2; |
1013 |
int hy = socket.mapy / 2; |
1014 |
|
1015 |
ordered_mapwalk_begin (ob, -hx, -hy, hx, hy) |
1016 |
int ax = dx + hx; |
1017 |
int ay = dy + hy; |
1018 |
|
1019 |
int mask = (ax << 10) | (ay << 4); |
1020 |
MapCell &lastcell = socket.lastmap.cells[ax][ay]; |
1021 |
|
1022 |
/* If the coordinates are not valid, or it is too dark to see, |
1023 |
* we tell the client as such |
1024 |
*/ |
1025 |
if (!m) |
1026 |
{ |
1027 |
/* space is out of map. Update space and clear values |
1028 |
* if this hasn't already been done. If the space is out |
1029 |
* of the map, it shouldn't have a head. |
1030 |
*/ |
1031 |
if (lastcell.count != -1) |
1032 |
{ |
1033 |
sl << uint16 (mask); |
1034 |
map_clearcell (&lastcell, -1); |
1035 |
} |
1036 |
|
1037 |
continue; |
1038 |
} |
1039 |
|
1040 |
int d = pl->blocked_los_uc (dx, dy); |
1041 |
|
1042 |
if (d > 3) |
1043 |
{ |
1044 |
/* This block deals with spaces that are not visible for whatever |
1045 |
* reason. Still may need to send the head for this space. |
1046 |
*/ |
1047 |
if (lastcell.count != -1 |
1048 |
|| lastcell.faces[0] |
1049 |
|| lastcell.faces[1] |
1050 |
|| lastcell.faces[2] |
1051 |
|| lastcell.stat_hp |
1052 |
|| lastcell.flags |
1053 |
|| lastcell.player) |
1054 |
sl << uint16 (mask); |
1055 |
|
1056 |
/* properly clear a previously sent big face */ |
1057 |
map_clearcell (&lastcell, -1); |
1058 |
} |
1059 |
else |
1060 |
{ |
1061 |
/* In this block, the space is visible. |
1062 |
*/ |
1063 |
|
1064 |
/* Rather than try to figure out what everything that we might |
1065 |
* need to send is, then form the packet after that, |
1066 |
* we presume that we will in fact form a packet, and update |
1067 |
* the bits by what we do actually send. If we send nothing, |
1068 |
* we just back out sl.length () to the old value, and no harm |
1069 |
* is done. |
1070 |
* I think this is simpler than doing a bunch of checks to see |
1071 |
* what if anything we need to send, setting the bits, then |
1072 |
* doing those checks again to add the real data. |
1073 |
*/ |
1074 |
oldlen = sl.length (); |
1075 |
|
1076 |
sl << uint16 (mask); |
1077 |
|
1078 |
unsigned char dummy; |
1079 |
unsigned char *last_ext = &dummy; |
1080 |
|
1081 |
/* Darkness changed */ |
1082 |
if (lastcell.count != d) |
1083 |
{ |
1084 |
mask |= 0x8; |
1085 |
|
1086 |
*last_ext |= 0x80; |
1087 |
last_ext = &sl[sl.length ()]; |
1088 |
sl << uint8 (d); |
1089 |
} |
1090 |
|
1091 |
lastcell.count = d; |
1092 |
|
1093 |
mapspace &ms = m->at (nx, ny); |
1094 |
ms.update (); |
1095 |
|
1096 |
// extmap handling |
1097 |
uint8 stat_hp = 0; |
1098 |
uint8 stat_width = 0; |
1099 |
uint8 flags = 0; |
1100 |
tag_t player = 0; |
1101 |
|
1102 |
// send hp information, if applicable |
1103 |
if (object *op = ms.faces_obj [0]) |
1104 |
if (op->is_head () && !op->invisible) |
1105 |
{ |
1106 |
if (op->stats.maxhp > op->stats.hp |
1107 |
&& op->stats.maxhp > 0 |
1108 |
&& (op->type == PLAYER |
1109 |
|| op->type == DOOR // does not work, have maxhp 0 |
1110 |
|| QUERY_FLAG (op, FLAG_MONSTER) |
1111 |
|| QUERY_FLAG (op, FLAG_ALIVE) |
1112 |
|| QUERY_FLAG (op, FLAG_GENERATOR))) |
1113 |
{ |
1114 |
stat_hp = 255 - (op->stats.hp * 255 + 254) / op->stats.maxhp; |
1115 |
stat_width = op->arch->max_x - op->arch->x; //TODO: should be upper-left edge |
1116 |
} |
1117 |
|
1118 |
if (expect_false (op->has_dialogue ())) |
1119 |
flags |= 1; |
1120 |
|
1121 |
if (expect_false (op->type == PLAYER)) |
1122 |
player = op == ob ? pl->ob->count |
1123 |
: op == pl->ob ? ob->count |
1124 |
: op->count; |
1125 |
} |
1126 |
|
1127 |
if (expect_false (lastcell.stat_hp != stat_hp)) |
1128 |
{ |
1129 |
lastcell.stat_hp = stat_hp; |
1130 |
|
1131 |
mask |= 0x8; |
1132 |
*last_ext |= 0x80; |
1133 |
last_ext = &sl[sl.length ()]; |
1134 |
|
1135 |
sl << uint8 (5) << uint8 (stat_hp); |
1136 |
|
1137 |
if (stat_width > 1) |
1138 |
{ |
1139 |
*last_ext |= 0x80; |
1140 |
last_ext = &sl[sl.length ()]; |
1141 |
|
1142 |
sl << uint8 (6) << uint8 (stat_width); |
1143 |
} |
1144 |
} |
1145 |
|
1146 |
if (expect_false (lastcell.player != player)) |
1147 |
{ |
1148 |
lastcell.player = player; |
1149 |
|
1150 |
mask |= 0x8; |
1151 |
*last_ext |= 0x80; |
1152 |
last_ext = &sl[sl.length ()]; |
1153 |
|
1154 |
sl << uint8 (0x47) << uint8 (4) << (uint32)player; |
1155 |
} |
1156 |
|
1157 |
if (expect_false (lastcell.flags != flags)) |
1158 |
{ |
1159 |
lastcell.flags = flags; |
1160 |
|
1161 |
mask |= 0x8; |
1162 |
*last_ext |= 0x80; |
1163 |
last_ext = &sl[sl.length ()]; |
1164 |
|
1165 |
sl << uint8 (8) << uint8 (flags); |
1166 |
} |
1167 |
|
1168 |
// faces |
1169 |
|
1170 |
/* Floor face */ |
1171 |
if (update_space (sl, socket, ms, lastcell, 2)) |
1172 |
mask |= 0x4; |
1173 |
|
1174 |
/* Middle face */ |
1175 |
if (update_space (sl, socket, ms, lastcell, 1)) |
1176 |
mask |= 0x2; |
1177 |
|
1178 |
if (expect_false (ob->invisible) |
1179 |
&& ob->invisible & (ob->invisible < 50 ? 1 : 7) |
1180 |
&& ms.player () == ob) |
1181 |
{ |
1182 |
// force player to be visible to himself if invisible |
1183 |
if (lastcell.faces[0] != ob->face) |
1184 |
{ |
1185 |
lastcell.faces[0] = ob->face; |
1186 |
|
1187 |
mask |= 0x1; |
1188 |
sl << uint16 (ob->face); |
1189 |
|
1190 |
socket.send_faces (ob); |
1191 |
} |
1192 |
} |
1193 |
/* Top face */ |
1194 |
else if (update_space (sl, socket, ms, lastcell, 0)) |
1195 |
mask |= 0x1; |
1196 |
|
1197 |
/* Check to see if we are in fact sending anything for this |
1198 |
* space by checking the mask. If so, update the mask. |
1199 |
* if not, reset the len to that from before adding the mask |
1200 |
* value, so we don't send those bits. |
1201 |
*/ |
1202 |
if (mask & 0xf) |
1203 |
sl[oldlen + 1] = mask & 0xff; |
1204 |
else |
1205 |
sl.reset (oldlen); |
1206 |
} /* else this is a viewable space */ |
1207 |
ordered_mapwalk_end |
1208 |
|
1209 |
socket.flush_fx (); |
1210 |
|
1211 |
if (sl.length () > startlen || socket.sent_scroll) |
1212 |
{ |
1213 |
socket.send_packet (sl); |
1214 |
socket.sent_scroll = 0; |
1215 |
} |
1216 |
} |
1217 |
|
1218 |
/*****************************************************************************/ |
1219 |
/* GROS: The following one is used to allow a plugin to send a generic cmd to*/ |
1220 |
/* a player. Of course, the client need to know the command to be able to */ |
1221 |
/* manage it ! */ |
1222 |
/*****************************************************************************/ |
1223 |
void |
1224 |
send_plugin_custom_message (object *pl, char *buf) |
1225 |
{ |
1226 |
pl->contr->ns->send_packet (buf); |
1227 |
} |
1228 |
|
1229 |
/** |
1230 |
* This sends the skill number to name mapping. We ignore |
1231 |
* the params - we always send the same info no matter what. |
1232 |
*/ |
1233 |
void |
1234 |
send_skill_info (client *ns, char *params) |
1235 |
{ |
1236 |
packet sl; |
1237 |
sl << "replyinfo skill_info\n"; |
1238 |
|
1239 |
for (int i = 1; i < NUM_SKILLS; i++) |
1240 |
sl.printf ("%d:%s\n", i + CS_STAT_SKILLINFO, &skill_names [i]); |
1241 |
|
1242 |
if (sl.length () > MAXSOCKBUF) |
1243 |
{ |
1244 |
LOG (llevError, "Buffer overflow in send_skill_info!\n"); |
1245 |
fatal (0); |
1246 |
} |
1247 |
|
1248 |
ns->send_packet (sl); |
1249 |
} |
1250 |
|
1251 |
/** |
1252 |
* This sends the spell path to name mapping. We ignore |
1253 |
* the params - we always send the same info no matter what. |
1254 |
*/ |
1255 |
void |
1256 |
send_spell_paths (client * ns, char *params) |
1257 |
{ |
1258 |
packet sl; |
1259 |
|
1260 |
sl << "replyinfo spell_paths\n"; |
1261 |
|
1262 |
for (int i = 0; i < NRSPELLPATHS; i++) |
1263 |
sl.printf ("%d:%s\n", 1 << i, spellpathnames[i]); |
1264 |
|
1265 |
if (sl.length () > MAXSOCKBUF) |
1266 |
{ |
1267 |
LOG (llevError, "Buffer overflow in send_spell_paths!\n"); |
1268 |
fatal (0); |
1269 |
} |
1270 |
|
1271 |
ns->send_packet (sl); |
1272 |
} |
1273 |
|
1274 |
/** |
1275 |
* This looks for any spells the player may have that have changed their stats. |
1276 |
* it then sends an updspell packet for each spell that has changed in this way |
1277 |
*/ |
1278 |
void |
1279 |
esrv_update_spells (player *pl) |
1280 |
{ |
1281 |
if (!pl->ns) |
1282 |
return; |
1283 |
|
1284 |
if (!pl->ns->monitor_spells) |
1285 |
return; |
1286 |
|
1287 |
for (object *spell = pl->ob->inv; spell; spell = spell->below) |
1288 |
{ |
1289 |
if (spell->type == SPELL) |
1290 |
{ |
1291 |
int flags = 0; |
1292 |
|
1293 |
/* check if we need to update it */ |
1294 |
if (spell->cached_sp != SP_level_spellpoint_cost (pl->ob, spell, SPELL_MANA)) |
1295 |
{ |
1296 |
spell->cached_sp = SP_level_spellpoint_cost (pl->ob, spell, SPELL_MANA); |
1297 |
flags |= UPD_SP_MANA; |
1298 |
} |
1299 |
|
1300 |
if (spell->cached_grace != SP_level_spellpoint_cost (pl->ob, spell, SPELL_GRACE)) |
1301 |
{ |
1302 |
spell->cached_grace = SP_level_spellpoint_cost (pl->ob, spell, SPELL_GRACE); |
1303 |
flags |= UPD_SP_GRACE; |
1304 |
} |
1305 |
|
1306 |
if (spell->cached_eat != spell->stats.dam + SP_level_dam_adjust (pl->ob, spell)) |
1307 |
{ |
1308 |
spell->cached_eat = spell->stats.dam + SP_level_dam_adjust (pl->ob, spell); |
1309 |
flags |= UPD_SP_DAMAGE; |
1310 |
} |
1311 |
|
1312 |
if (flags) |
1313 |
{ |
1314 |
packet sl; |
1315 |
|
1316 |
sl << "updspell " |
1317 |
<< uint8 (flags) |
1318 |
<< uint32 (spell->count); |
1319 |
|
1320 |
if (flags & UPD_SP_MANA ) sl << uint16 (spell->cached_sp); |
1321 |
if (flags & UPD_SP_GRACE ) sl << uint16 (spell->cached_grace); |
1322 |
if (flags & UPD_SP_DAMAGE) sl << uint16 (spell->cached_eat); |
1323 |
|
1324 |
pl->ns->send_packet (sl); |
1325 |
} |
1326 |
} |
1327 |
} |
1328 |
} |
1329 |
|
1330 |
void |
1331 |
esrv_remove_spell (player *pl, object *spell) |
1332 |
{ |
1333 |
if (!pl->ns->monitor_spells) |
1334 |
return; |
1335 |
|
1336 |
if (!pl || !spell || spell->env != pl->ob) |
1337 |
{ |
1338 |
LOG (llevError, "Invalid call to esrv_remove_spell"); |
1339 |
return; |
1340 |
} |
1341 |
|
1342 |
packet sl ("delspell"); |
1343 |
|
1344 |
sl << uint32 (spell->count); |
1345 |
|
1346 |
pl->ns->send_packet (sl); |
1347 |
} |
1348 |
|
1349 |
/* appends the spell *spell to the Socklist we will send the data to. */ |
1350 |
static void |
1351 |
append_spell (player *pl, packet &sl, object *spell) |
1352 |
{ |
1353 |
int i, skill = 0; |
1354 |
|
1355 |
if (!(spell->name)) |
1356 |
{ |
1357 |
LOG (llevError, "item number %d is a spell with no name.\n", spell->count); |
1358 |
return; |
1359 |
} |
1360 |
|
1361 |
/* store costs and damage in the object struct, to compare to later */ |
1362 |
spell->cached_sp = SP_level_spellpoint_cost (pl->ob, spell, SPELL_MANA); |
1363 |
spell->cached_grace = SP_level_spellpoint_cost (pl->ob, spell, SPELL_GRACE); |
1364 |
spell->cached_eat = spell->stats.dam + SP_level_dam_adjust (pl->ob, spell); |
1365 |
|
1366 |
/* figure out which skill it uses, if it uses one */ |
1367 |
if (spell->skill) |
1368 |
if (object *tmp = pl->find_skill (spell->skill)) |
1369 |
skill = tmp->subtype + CS_STAT_SKILLINFO; |
1370 |
|
1371 |
// spells better have a face |
1372 |
if (!spell->face) |
1373 |
{ |
1374 |
LOG (llevError, "%s: spell has no face, but face is mandatory.\n", &spell->name); |
1375 |
spell->face = face_find ("burnout.x11", blank_face); |
1376 |
} |
1377 |
|
1378 |
pl->ns->send_face (spell->face); |
1379 |
|
1380 |
/* send the current values */ |
1381 |
sl << uint32 (spell->count) |
1382 |
<< uint16 (spell->level) |
1383 |
<< uint16 (spell->casting_time) |
1384 |
<< uint16 (spell->cached_sp) |
1385 |
<< uint16 (spell->cached_grace) |
1386 |
<< uint16 (spell->cached_eat) |
1387 |
<< uint8 (skill) |
1388 |
<< uint32 (spell->path_attuned) |
1389 |
<< uint32 (spell->face) |
1390 |
<< data8 (spell->name) |
1391 |
<< data16 (spell->msg); |
1392 |
} |
1393 |
|
1394 |
/** |
1395 |
* This tells the client to add the spell *ob, if *ob is NULL, then add |
1396 |
* all spells in the player's inventory. |
1397 |
*/ |
1398 |
void |
1399 |
esrv_add_spells (player *pl, object *spell) |
1400 |
{ |
1401 |
if (!pl) |
1402 |
{ |
1403 |
LOG (llevError, "esrv_add_spells, tried to add a spell to a NULL player"); |
1404 |
return; |
1405 |
} |
1406 |
|
1407 |
if (!pl->ns->monitor_spells) |
1408 |
return; |
1409 |
|
1410 |
packet sl ("addspell"); |
1411 |
|
1412 |
if (!spell) |
1413 |
{ |
1414 |
for (spell = pl->ob->inv; spell; spell = spell->below) |
1415 |
{ |
1416 |
/* were we to simply keep appending data here, we could exceed |
1417 |
* MAXSOCKBUF if the player has enough spells to add, we know that |
1418 |
* append_spells will always append 19 data bytes, plus 4 length |
1419 |
* bytes and 3 strings (because that is the spec) so we need to |
1420 |
* check that the length of those 3 strings, plus the 23 bytes, |
1421 |
* won't take us over the length limit for the socket, if it does, |
1422 |
* we need to send what we already have, and restart packet formation |
1423 |
*/ |
1424 |
if (spell->type != SPELL) |
1425 |
continue; |
1426 |
|
1427 |
/* Seeing crashes by overflowed buffers. Quick arithemetic seems |
1428 |
* to show add_spell is 26 bytes + 2 strings. However, the overun |
1429 |
* is hundreds of bytes off, so correcting 22 vs 26 doesn't seem |
1430 |
* like it will fix this |
1431 |
*/ |
1432 |
if (sl.length () > (MAXSOCKBUF - (26 + strlen (spell->name) + (spell->msg ? strlen (spell->msg) : 0)))) |
1433 |
{ |
1434 |
pl->ns->flush_fx (); |
1435 |
pl->ns->send_packet (sl); |
1436 |
|
1437 |
sl.reset (); |
1438 |
sl << "addspell "; |
1439 |
} |
1440 |
|
1441 |
append_spell (pl, sl, spell); |
1442 |
} |
1443 |
} |
1444 |
else if (spell->type != SPELL) |
1445 |
{ |
1446 |
LOG (llevError, "Asked to send a non-spell object as a spell"); |
1447 |
return; |
1448 |
} |
1449 |
else |
1450 |
append_spell (pl, sl, spell); |
1451 |
|
1452 |
if (sl.length () > MAXSOCKBUF) |
1453 |
{ |
1454 |
LOG (llevError, "Buffer overflow in esrv_add_spells!\n"); |
1455 |
fatal (0); |
1456 |
} |
1457 |
|
1458 |
/* finally, we can send the packet */ |
1459 |
pl->ns->flush_fx (); |
1460 |
pl->ns->send_packet (sl); |
1461 |
} |
1462 |
|