main/netmisc.c

   1 /*
   2 THE COMPUTER CODE CONTAINED HEREIN IS THE SOLE PROPERTY OF PARALLAX
   3 SOFTWARE CORPORATION ("PARALLAX").  PARALLAX, IN DISTRIBUTING THE CODE TO
   4 END-USERS, AND SUBJECT TO ALL OF THE TERMS AND CONDITIONS HEREIN, GRANTS A
   5 ROYALTY-FREE, PERPETUAL LICENSE TO SUCH END-USERS FOR USE BY SUCH END-USERS
   6 IN USING, DISPLAYING,  AND CREATING DERIVATIVE WORKS THEREOF, SO LONG AS
   7 SUCH USE, DISPLAY OR CREATION IS FOR NON-COMMERCIAL, ROYALTY OR REVENUE
   8 FREE PURPOSES.  IN NO EVENT SHALL THE END-USER USE THE COMPUTER CODE
   9 CONTAINED HEREIN FOR REVENUE-BEARING PURPOSES.  THE END-USER UNDERSTANDS
  10 AND AGREES TO THE TERMS HEREIN AND ACCEPTS THE SAME BY USE OF THIS FILE.
  11 COPYRIGHT 1993-1999 PARALLAX SOFTWARE CORPORATION.  ALL RIGHTS RESERVED.
  12 */
  13
  14
  15 #ifdef RCS
  16 static char rcsid[] = "$Id: netmisc.c,v 1.1.1.1 2001-01-19 03:30:01 bradleyb Exp $";
  17 #endif
  18
  19 #include <conf.h>
  20
  21 #include <stdio.h>
  22 #include <string.h>
  23
  24 #include "inferno.h"
  25 #include "pstypes.h"
  26 #include "mono.h"
  27
  28 #ifdef MACINTOSH
  29
  30 #include "byteswap.h"
  31 #include "segment.h"
  32 #include "gameseg.h"
  33
  34 // routine to calculate the checksum of the segments.  We add these specialized routines
  35 // since the current way is byte order dependent.
  36
  37 void mac_do_checksum_calc(ubyte *b, int len, unsigned int *s1, unsigned int *s2)
  38 {
  39
  40         while(len--)    {
  41                 *s1 += *b++;
  42                 if (*s1 >= 255 ) *s1 -= 255;
  43                 *s2 += *s1;
  44         }
  45 }
  46
  47 ushort mac_calc_segment_checksum()
  48 {
  49         int i, j, k;
  50         unsigned int sum1,sum2;
  51         short s;
  52         int t;
  53
  54         sum1 = sum2 = 0;
  55         for (i = 0; i < Highest_segment_index + 1; i++) {
  56                 for (j = 0; j < MAX_SIDES_PER_SEGMENT; j++) {
  57                         mac_do_checksum_calc(&(Segments[i].sides[j].type), 1, &sum1, &sum2);
  58                         mac_do_checksum_calc(&(Segments[i].sides[j].pad), 1, &sum1, &sum2);
  59                         s = INTEL_SHORT(Segments[i].sides[j].wall_num);
  60                         mac_do_checksum_calc((ubyte *)&s, 2, &sum1, &sum2);
  61                         s = INTEL_SHORT(Segments[i].sides[j].tmap_num);
  62                         mac_do_checksum_calc((ubyte *)&s, 2, &sum1, &sum2);
  63                         s = INTEL_SHORT(Segments[i].sides[j].tmap_num2);
  64                         mac_do_checksum_calc((ubyte *)&s, 2, &sum1, &sum2);
  65                         for (k = 0; k < 4; k++) {
  66                                 t = INTEL_INT(((int)Segments[i].sides[j].uvls[k].u));
  67                                 mac_do_checksum_calc((ubyte *)&t, 4, &sum1, &sum2);
  68                                 t = INTEL_INT(((int)Segments[i].sides[j].uvls[k].v));
  69                                 mac_do_checksum_calc((ubyte *)&t, 4, &sum1, &sum2);
  70                                 t = INTEL_INT(((int)Segments[i].sides[j].uvls[k].l));
  71                                 mac_do_checksum_calc((ubyte *)&t, 4, &sum1, &sum2);
  72                         }
  73                         for (k = 0; k < 2; k++) {
  74                                 t = INTEL_INT(((int)Segments[i].sides[j].normals[k].x));
  75                                 mac_do_checksum_calc((ubyte *)&t, 4, &sum1, &sum2);
  76                                 t = INTEL_INT(((int)Segments[i].sides[j].normals[k].y));
  77                                 mac_do_checksum_calc((ubyte *)&t, 4, &sum1, &sum2);
  78                                 t = INTEL_INT(((int)Segments[i].sides[j].normals[k].z));
  79                                 mac_do_checksum_calc((ubyte *)&t, 4, &sum1, &sum2);
  80                         }
  81                 }
  82                 for (j = 0; j < MAX_SIDES_PER_SEGMENT; j++) {
  83                         s = INTEL_SHORT(Segments[i].children[j]);
  84                         mac_do_checksum_calc((ubyte *)&s, 2, &sum1, &sum2);
  85                 }
  86                 for (j = 0; j < MAX_VERTICES_PER_SEGMENT; j++) {
  87                         s = INTEL_SHORT(Segments[i].verts[j]);
  88                         mac_do_checksum_calc((ubyte *)&s, 2, &sum1, &sum2);
  89                 }
  90                 t = INTEL_INT(Segments[i].objects);
  91                 mac_do_checksum_calc((ubyte *)&t, 4, &sum1, &sum2);
  92         }
  93         sum2 %= 255;
  94         return ((sum1<<8)+ sum2);
  95 }
  96
  97 // this routine totally and completely relies on the fact that the network
  98 //  checksum must be calculated on the segments!!!!!
  99
 100 ushort netmisc_calc_checksum( void * vptr, int len )
 101 {
 102         vptr = vptr;
 103         len = len;
 104         return mac_calc_segment_checksum();
 105 }
 106
 107 // Calculates the checksum of a block of memory.
 108 ushort netmisc_calc_checksum_pc( void * vptr, int len )
 109 {
 110         ubyte * ptr = (ubyte *)vptr;
 111         unsigned int sum1,sum2;
 112
 113         sum1 = sum2 = 0;
 114
 115         while(len--)    {
 116                 sum1 += *ptr++;
 117                 if (sum1 >= 255 ) sum1 -= 255;
 118                 sum2 += sum1;
 119         }
 120         sum2 %= 255;
 121
 122         return ((sum1<<8)+ sum2);
 123 }
 124
 125 // following are routine for macintosh only that will swap the elements of
 126 // structures send through the networking code.  The structures and
 127 // this code must be kept in total sync
 128
 129 #include "ipx.h"
 130 #include "byteswap.h"
 131 #include "multi.h"
 132 #include "network.h"
 133 #include "object.h"
 134 #include "powerup.h"
 135 #include "error.h"
 136
 137 byte out_buffer[IPX_MAX_DATA_SIZE];             // used for tmp netgame packets as well as sending object data
 138
 139 void receive_netplayer_info(ubyte *data, netplayer_info *info)
 140 {
 141         int loc = 0;
 142
 143         memcpy(info->callsign, &(data[loc]), CALLSIGN_LEN+1);           loc += CALLSIGN_LEN+1;
 144         memcpy(&(info->network.ipx.server), &(data[loc]), 4);                                   loc += 4;
 145         memcpy(&(info->network.ipx.node), &(data[loc]), 6);                                             loc += 6;
 146         info->version_major = data[loc];                                                        loc++;
 147         info->version_minor = data[loc];                                                        loc++;
 148         memcpy(&(info->computer_type), &(data[loc]), 1);                        loc++;          // memcpy to avoid compile time warning about enum
 149         info->connected = data[loc];                                                            loc++;
 150         memcpy(&(info->socket), &(data[loc]), 2);                                       loc += 2;
 151    memcpy (&(info->rank),&(data[loc]),1);                                          loc++;
 152 //MWA  don't think we need to swap this because we need it in high order        info->socket = swapshort(info->socket);
 153 }
 154
 155 void send_netplayers_packet(ubyte *server, ubyte *node)
 156 {
 157         int i, tmpi;
 158         int loc = 0;
 159         short tmps;
 160
 161         memset(out_buffer, 0, sizeof(out_buffer));
 162         out_buffer[0] = NetPlayers.type;                                                loc++;
 163         tmpi = INTEL_INT(NetPlayers.Security);
 164         memcpy(&(out_buffer[loc]), &tmpi, 4);                                   loc += 4;
 165         for (i = 0; i < MAX_PLAYERS+4; i++) {
 166                 memcpy(&(out_buffer[loc]), NetPlayers.players[i].callsign, CALLSIGN_LEN+1);     loc += CALLSIGN_LEN+1;
 167                 memcpy(&(out_buffer[loc]), NetPlayers.players[i].network.ipx.server, 4);                                loc += 4;
 168                 memcpy(&(out_buffer[loc]), NetPlayers.players[i].network.ipx.node, 6);                                  loc += 6;
 169                 memcpy(&(out_buffer[loc]), &(NetPlayers.players[i].version_major), 1);          loc++;
 170                 memcpy(&(out_buffer[loc]), &(NetPlayers.players[i].version_minor), 1);          loc++;
 171                 memcpy(&(out_buffer[loc]), &(NetPlayers.players[i].computer_type), 1);          loc++;
 172                 memcpy(&(out_buffer[loc]), &(NetPlayers.players[i].connected), 1);                      loc++;
 173                 tmps = INTEL_SHORT(NetPlayers.players[i].socket);
 174                 memcpy(&(out_buffer[loc]), &tmps, 2);                                                                           loc += 2;
 175                 memcpy(&(out_buffer[loc]), &(NetPlayers.players[i].rank), 1);                   loc++;
 176         }
 177
 178         if ((server == NULL) && (node == NULL))
 179                 ipx_send_broadcast_packet_data( out_buffer, loc );
 180         else
 181                 ipx_send_internetwork_packet_data( out_buffer, loc, server, node);
 182
 183 }
 184
 185 void receive_netplayers_packet(ubyte *data, AllNetPlayers_info *pinfo)
 186 {
 187         int i, loc = 0;
 188
 189         pinfo->type = data[loc];                                                        loc++;
 190         memcpy(&(pinfo->Security), &(data[loc]), 4);            loc += 4;
 191         pinfo->Security = INTEL_INT(pinfo->Security);
 192         for (i = 0; i < MAX_PLAYERS+4; i++) {
 193                 receive_netplayer_info(&(data[loc]), &(pinfo->players[i]));
 194                 loc += 26;                      // sizeof(netplayer_info) on the PC
 195         }
 196 }
 197
 198 void send_sequence_packet(sequence_packet seq, ubyte *server, ubyte *node, ubyte *net_address)
 199 {
 200         short tmps;
 201         int loc, tmpi;
 202
 203         loc = 0;
 204         memset(out_buffer, 0, sizeof(out_buffer));
 205         out_buffer[0] = seq.type;                                                                               loc++;
 206         tmpi = INTEL_INT(seq.Security);
 207         memcpy(&(out_buffer[loc]), &tmpi, 4);                                                   loc += 4;               loc += 3;
 208         memcpy(&(out_buffer[loc]), seq.player.callsign, CALLSIGN_LEN+1);loc += CALLSIGN_LEN+1;
 209         memcpy(&(out_buffer[loc]), seq.player.network.ipx.server, 4);                           loc += 4;
 210         memcpy(&(out_buffer[loc]), seq.player.network.ipx.node, 6);                                     loc += 6;
 211         out_buffer[loc] = seq.player.version_major;                                             loc++;
 212         out_buffer[loc] = seq.player.version_minor;                                             loc++;
 213         out_buffer[loc] = seq.player.computer_type;                                             loc++;
 214         out_buffer[loc] = seq.player.connected;                                                 loc++;
 215         tmps = swapshort(seq.player.socket);
 216         memcpy(&(out_buffer[loc]), &tmps, 2);                                                   loc += 2;
 217    out_buffer[loc]=seq.player.rank;                                                                     loc++;          // for pad byte
 218         if (net_address != NULL)
 219                 ipx_send_packet_data( out_buffer, loc, server, node, net_address);
 220         else if ((server == NULL) && (node == NULL))
 221                 ipx_send_broadcast_packet_data( out_buffer, loc );
 222         else
 223                 ipx_send_internetwork_packet_data( out_buffer, loc, server, node);
 224 }
 225
 226 void receive_sequence_packet(ubyte *data, sequence_packet *seq)
 227 {
 228         int loc = 0;
 229
 230         seq->type = data[0];                                            loc++;
 231         memcpy(&(seq->Security), &(data[loc]), 4);      loc += 4;       loc += 3;               // +3 for pad byte
 232         seq->Security = INTEL_INT(seq->Security);
 233         receive_netplayer_info(&(data[loc]), &(seq->player));
 234 }
 235
 236 void send_netgame_packet(ubyte *server, ubyte *node, ubyte *net_address, int lite_flag)         // lite says shorter netgame packets
 237 {
 238         uint tmpi;
 239         ushort tmps, p;
 240         int i, j;
 241         int loc = 0;
 242
 243         memset(out_buffer, 0, IPX_MAX_DATA_SIZE);
 244         memcpy(&(out_buffer[loc]), &(Netgame.type), 1); loc++;
 245         tmpi = INTEL_INT(Netgame.Security);
 246         memcpy(&(out_buffer[loc]), &tmpi, 4);           loc += 4;
 247         memcpy(&(out_buffer[loc]), Netgame.game_name, NETGAME_NAME_LEN+1); loc += (NETGAME_NAME_LEN+1);
 248         memcpy(&(out_buffer[loc]), Netgame.mission_title, MISSION_NAME_LEN+1);  loc += (MISSION_NAME_LEN+1);
 249         memcpy(&(out_buffer[loc]), Netgame.mission_name, 9);                    loc += 9;
 250         tmpi = INTEL_INT(Netgame.levelnum);
 251         memcpy(&(out_buffer[loc]), &tmpi, 4);                                                   loc += 4;
 252         memcpy(&(out_buffer[loc]), &(Netgame.gamemode), 1);                             loc++;
 253         memcpy(&(out_buffer[loc]), &(Netgame.RefusePlayers), 1);                loc++;
 254         memcpy(&(out_buffer[loc]), &(Netgame.difficulty), 1);                   loc++;
 255         memcpy(&(out_buffer[loc]), &(Netgame.game_status), 1);                  loc++;
 256         memcpy(&(out_buffer[loc]), &(Netgame.numplayers), 1);                   loc++;
 257         memcpy(&(out_buffer[loc]), &(Netgame.max_numplayers), 1);               loc++;
 258         memcpy(&(out_buffer[loc]), &(Netgame.numconnected), 1);                 loc++;
 259         memcpy(&(out_buffer[loc]), &(Netgame.game_flags), 1);                   loc++;
 260         memcpy(&(out_buffer[loc]), &(Netgame.protocol_version), 1);             loc++;
 261         memcpy(&(out_buffer[loc]), &(Netgame.version_major), 1);                loc++;
 262         memcpy(&(out_buffer[loc]), &(Netgame.version_minor), 1);                loc++;
 263         memcpy(&(out_buffer[loc]), &(Netgame.team_vector), 1);                  loc++;
 264
 265         if (lite_flag)
 266                 goto do_send;
 267
 268 // will this work -- damn bitfields -- totally bogus when trying to do this type of stuff
 269 // Watcom makes bitfields from left to right.  CW7 on the mac goes from right to left.
 270 // then they are endian swapped
 271
 272         tmps = *(ushort *)((ubyte *)(&Netgame.team_vector) + 1);                        // get the values for the first short bitfield
 273         tmps = INTEL_SHORT(tmps);
 274         memcpy(&(out_buffer[loc]), &tmps, 2);           loc += 2;
 275
 276         tmps = *(ushort *)((ubyte *)(&Netgame.team_vector) + 3);                        // get the values for the second short bitfield
 277         tmps = INTEL_SHORT(tmps);
 278         memcpy(&(out_buffer[loc]), &tmps, 2);           loc += 2;
 279
 280 #if 0           // removed since I reordered bitfields on mac
 281         p = *(ushort *)((ubyte *)(&Netgame.team_vector) + 1);                   // get the values for the first short bitfield
 282         tmps = 0;
 283         for (i = 15; i >= 0; i--) {
 284                 if ( p & (1 << i) )
 285                         tmps |= (1 << (15 - i));
 286         }
 287         tmps = INTEL_SHORT(tmps);
 288         memcpy(&(out_buffer[loc]), &tmps, 2);                                                   loc += 2;
 289         p = *(ushort *)((ubyte *)(&Netgame.team_vector) + 3);                   // get the values for the second short bitfield
 290         tmps = 0;
 291         for (i = 15; i >= 0; i--) {
 292                 if ( p & (1 << i) )
 293                         tmps |= (1 << (15 - i));
 294         }
 295         tmps = INTEL_SHORT(tmps);
 296         memcpy(&(out_buffer[loc]), &tmps, 2);                                                   loc += 2;
 297 #endif
 298
 299         memcpy(&(out_buffer[loc]), Netgame.team_name, 2*(CALLSIGN_LEN+1)); loc += 2*(CALLSIGN_LEN+1);
 300         for (i = 0; i < MAX_PLAYERS; i++) {
 301                 tmpi = INTEL_INT(Netgame.locations[i]);
 302                 memcpy(&(out_buffer[loc]), &tmpi, 4); loc += 4;                 // SWAP HERE!!!
 303         }
 304
 305         for (i = 0; i < MAX_PLAYERS; i++) {
 306                 for (j = 0; j < MAX_PLAYERS; j++) {
 307                         tmps = INTEL_SHORT(Netgame.kills[i][j]);
 308                         memcpy(&(out_buffer[loc]), &tmps, 2); loc += 2;                 // SWAP HERE!!!
 309                 }
 310         }
 311
 312         tmps = INTEL_SHORT(Netgame.segments_checksum);
 313         memcpy(&(out_buffer[loc]), &tmps, 2); loc += 2;                         // SWAP_HERE
 314         tmps = INTEL_SHORT(Netgame.team_kills[0]);
 315         memcpy(&(out_buffer[loc]), &tmps, 2); loc += 2;                         // SWAP_HERE
 316         tmps = INTEL_SHORT(Netgame.team_kills[1]);
 317         memcpy(&(out_buffer[loc]), &tmps, 2); loc += 2;                         // SWAP_HERE
 318         for (i = 0; i < MAX_PLAYERS; i++) {
 319                 tmps = INTEL_SHORT(Netgame.killed[i]);
 320                 memcpy(&(out_buffer[loc]), &tmps, 2); loc += 2;                 // SWAP HERE!!!
 321         }
 322         for (i = 0; i < MAX_PLAYERS; i++) {
 323                 tmps = INTEL_SHORT(Netgame.player_kills[i]);
 324                 memcpy(&(out_buffer[loc]), &tmps, 2); loc += 2;                 // SWAP HERE!!!
 325         }
 326
 327         tmpi = INTEL_INT(Netgame.KillGoal);
 328         memcpy(&(out_buffer[loc]), &tmpi, 4); loc += 4;                         // SWAP_HERE
 329         tmpi = INTEL_INT(Netgame.PlayTimeAllowed);
 330         memcpy(&(out_buffer[loc]), &tmpi, 4); loc += 4;                         // SWAP_HERE
 331         tmpi = INTEL_INT(Netgame.level_time);
 332         memcpy(&(out_buffer[loc]), &tmpi, 4); loc += 4;                         // SWAP_HERE
 333         tmpi = INTEL_INT(Netgame.control_invul_time);
 334         memcpy(&(out_buffer[loc]), &tmpi, 4); loc += 4;                         // SWAP_HERE
 335         tmpi = INTEL_INT(Netgame.monitor_vector);
 336         memcpy(&(out_buffer[loc]), &tmpi, 4); loc += 4;                         // SWAP_HERE
 337         for (i = 0; i < MAX_PLAYERS; i++) {
 338                 tmpi = INTEL_INT(Netgame.player_score[i]);
 339                 memcpy(&(out_buffer[loc]), &tmpi, 4); loc += 4;                         // SWAP_HERE
 340         }
 341         for (i = 0; i < MAX_PLAYERS; i++) {
 342                 memcpy(&(out_buffer[loc]), &(Netgame.player_flags[i]), 1); loc++;
 343         }
 344         tmps = INTEL_SHORT(Netgame.PacketsPerSec);
 345         memcpy(&(out_buffer[loc]), &tmps, 2);                                   loc += 2;
 346         memcpy(&(out_buffer[loc]), &(Netgame.ShortPackets), 1); loc ++;
 347
 348 do_send:
 349         if (net_address != NULL)
 350                 ipx_send_packet_data( out_buffer, loc, server, node, net_address);
 351         else if ((server == NULL) && (node == NULL))
 352                 ipx_send_broadcast_packet_data( out_buffer, loc );
 353         else
 354                 ipx_send_internetwork_packet_data( out_buffer, loc, server, node);
 355 }
 356
 357 void receive_netgame_packet(ubyte *data, netgame_info *netgame, int lite_flag)
 358 {
 359         int i, j;
 360         int loc = 0;
 361         short bitfield, new_field;
 362
 363         memcpy(&(netgame->type), &(data[loc]), 1);                                              loc++;
 364         memcpy(&(netgame->Security), &(data[loc]), 4);                                  loc += 4;
 365         netgame->Security = INTEL_INT(netgame->Security);
 366         memcpy(netgame->game_name, &(data[loc]), NETGAME_NAME_LEN+1);   loc += (NETGAME_NAME_LEN+1);
 367         memcpy(netgame->mission_title, &(data[loc]), MISSION_NAME_LEN+1); loc += (MISSION_NAME_LEN+1);
 368         memcpy(netgame->mission_name, &(data[loc]), 9);                                 loc += 9;
 369         memcpy(&(netgame->levelnum), &(data[loc]), 4);                                          loc += 4;
 370         netgame->levelnum = INTEL_INT(netgame->levelnum);
 371         memcpy(&(netgame->gamemode), &(data[loc]), 1);                                  loc++;
 372         memcpy(&(netgame->RefusePlayers), &(data[loc]), 1);                             loc++;
 373         memcpy(&(netgame->difficulty), &(data[loc]), 1);                                loc++;
 374         memcpy(&(netgame->game_status), &(data[loc]), 1);                               loc++;
 375         memcpy(&(netgame->numplayers), &(data[loc]), 1);                                loc++;
 376         memcpy(&(netgame->max_numplayers), &(data[loc]), 1);                    loc++;
 377         memcpy(&(netgame->numconnected), &(data[loc]), 1);                              loc++;
 378         memcpy(&(netgame->game_flags), &(data[loc]), 1);                                loc++;
 379         memcpy(&(netgame->protocol_version), &(data[loc]), 1);                  loc++;
 380         memcpy(&(netgame->version_major), &(data[loc]), 1);                             loc++;
 381         memcpy(&(netgame->version_minor), &(data[loc]), 1);                             loc++;
 382         memcpy(&(netgame->team_vector), &(data[loc]), 1);                               loc++;
 383
 384         if (lite_flag)
 385                 return;
 386
 387         memcpy(&bitfield, &(data[loc]), 2);     loc += 2;
 388         bitfield = INTEL_SHORT(bitfield);
 389         memcpy(((ubyte *)(&netgame->team_vector) + 1), &bitfield, 2);
 390
 391         memcpy(&bitfield, &(data[loc]), 2);     loc += 2;
 392         bitfield = INTEL_SHORT(bitfield);
 393         memcpy(((ubyte *)(&netgame->team_vector) + 3), &bitfield, 2);
 394
 395 #if 0           // not used since reordering mac bitfields
 396         memcpy(&bitfield, &(data[loc]), 2);                                                             loc += 2;
 397         new_field = 0;
 398         for (i = 15; i >= 0; i--) {
 399                 if ( bitfield & (1 << i) )
 400                         new_field |= (1 << (15 - i));
 401         }
 402         new_field = INTEL_SHORT(new_field);
 403         memcpy(((ubyte *)(&netgame->team_vector) + 1), &new_field, 2);
 404
 405         memcpy(&bitfield, &(data[loc]), 2);                                                             loc += 2;
 406         new_field = 0;
 407         for (i = 15; i >= 0; i--) {
 408                 if ( bitfield & (1 << i) )
 409                         new_field |= (1 << (15 - i));
 410         }
 411         new_field = INTEL_SHORT(new_field);
 412         memcpy(((ubyte *)(&netgame->team_vector) + 3), &new_field, 2);
 413 #endif
 414
 415         memcpy(netgame->team_name, &(data[loc]), 2*(CALLSIGN_LEN+1));           loc += 2*(CALLSIGN_LEN+1);
 416         for (i = 0; i < MAX_PLAYERS; i++) {
 417                 memcpy(&(netgame->locations[i]), &(data[loc]), 4);                              loc += 4;
 418                 netgame->locations[i] = INTEL_INT(netgame->locations[i]);
 419         }
 420
 421         for (i = 0; i < MAX_PLAYERS; i++) {
 422                 for (j = 0; j < MAX_PLAYERS; j++) {
 423                         memcpy(&(netgame->kills[i][j]), &(data[loc]), 2);                       loc += 2;
 424                         netgame->kills[i][j] = INTEL_SHORT(netgame->kills[i][j]);
 425                 }
 426         }
 427
 428         memcpy(&(netgame->segments_checksum), &(data[loc]), 2);                         loc += 2;
 429         netgame->segments_checksum = INTEL_SHORT(netgame->segments_checksum);
 430         memcpy(&(netgame->team_kills[0]), &(data[loc]), 2);                             loc += 2;
 431         netgame->team_kills[0] = INTEL_SHORT(netgame->team_kills[0]);
 432         memcpy(&(netgame->team_kills[1]), &(data[loc]), 2);                                     loc += 2;
 433         netgame->team_kills[1] = INTEL_SHORT(netgame->team_kills[1]);
 434         for (i = 0; i < MAX_PLAYERS; i++) {
 435                 memcpy(&(netgame->killed[i]), &(data[loc]), 2);                                 loc += 2;
 436                 netgame->killed[i] = INTEL_SHORT(netgame->killed[i]);
 437         }
 438         for (i = 0; i < MAX_PLAYERS; i++) {
 439                 memcpy(&(netgame->player_kills[i]), &(data[loc]), 2);                   loc += 2;
 440                 netgame->player_kills[i] = INTEL_SHORT(netgame->player_kills[i]);
 441         }
 442         memcpy(&(netgame->KillGoal), &(data[loc]), 4);                                          loc += 4;
 443         netgame->KillGoal = INTEL_INT(netgame->KillGoal);
 444         memcpy(&(netgame->PlayTimeAllowed), &(data[loc]), 4);                           loc += 4;
 445         netgame->PlayTimeAllowed = INTEL_INT(netgame->PlayTimeAllowed);
 446
 447         memcpy(&(netgame->level_time), &(data[loc]), 4);                                        loc += 4;
 448         netgame->level_time = INTEL_INT(netgame->level_time);
 449         memcpy(&(netgame->control_invul_time), &(data[loc]), 4);                        loc += 4;
 450         netgame->control_invul_time = swapint(netgame->control_invul_time);
 451         memcpy(&(netgame->monitor_vector), &(data[loc]), 4);                            loc += 4;
 452         netgame->monitor_vector = swapint(netgame->monitor_vector);
 453         for (i = 0; i < MAX_PLAYERS; i++) {
 454                 memcpy(&(netgame->player_score[i]), &(data[loc]), 4);                   loc += 4;
 455                 netgame->player_score[i] = swapint(netgame->player_score[i]);
 456         }
 457         for (i = 0; i < MAX_PLAYERS; i++) {
 458                 memcpy(&(netgame->player_flags[i]), &(data[loc]), 1); loc++;
 459         }
 460         memcpy(&(netgame->PacketsPerSec), &(data[loc]), 2);                                     loc += 2;
 461         netgame->PacketsPerSec = INTEL_SHORT(netgame->PacketsPerSec);
 462         memcpy(&(netgame->ShortPackets), &(data[loc]), 1);                                      loc ++;
 463
 464 }
 465
 466 void swap_object(object *obj)
 467 {
 468 // swap the short and int entries for this object
 469         obj->signature                  = INTEL_INT(obj->signature);
 470         obj->next                               = INTEL_SHORT(obj->next);
 471         obj->prev                               = INTEL_SHORT(obj->prev);
 472         obj->segnum                             = INTEL_SHORT(obj->segnum);
 473         obj->pos.x                              = INTEL_INT(obj->pos.x);
 474         obj->pos.y                              = INTEL_INT(obj->pos.y);
 475         obj->pos.z                              = INTEL_INT(obj->pos.z);
 476
 477         obj->orient.rvec.x              = INTEL_INT(obj->orient.rvec.x);
 478         obj->orient.rvec.y              = INTEL_INT(obj->orient.rvec.y);
 479         obj->orient.rvec.z              = INTEL_INT(obj->orient.rvec.z);
 480         obj->orient.fvec.x              = INTEL_INT(obj->orient.fvec.x);
 481         obj->orient.fvec.y              = INTEL_INT(obj->orient.fvec.y);
 482         obj->orient.fvec.z              = INTEL_INT(obj->orient.fvec.z);
 483         obj->orient.uvec.x              = INTEL_INT(obj->orient.uvec.x);
 484         obj->orient.uvec.y              = INTEL_INT(obj->orient.uvec.y);
 485         obj->orient.uvec.z              = INTEL_INT(obj->orient.uvec.z);
 486
 487         obj->size                               = INTEL_INT(obj->size);
 488         obj->shields                    = INTEL_INT(obj->shields);
 489
 490         obj->last_pos.x                 = INTEL_INT(obj->last_pos.x);
 491         obj->last_pos.y                 = INTEL_INT(obj->last_pos.y);
 492         obj->last_pos.z                 = INTEL_INT(obj->last_pos.z);
 493
 494         obj->lifeleft                   = INTEL_INT(obj->lifeleft);
 495
 496         switch (obj->movement_type) {
 497
 498         case MT_PHYSICS:
 499
 500                 obj->mtype.phys_info.velocity.x = INTEL_INT(obj->mtype.phys_info.velocity.x);
 501                 obj->mtype.phys_info.velocity.y = INTEL_INT(obj->mtype.phys_info.velocity.y);
 502                 obj->mtype.phys_info.velocity.z = INTEL_INT(obj->mtype.phys_info.velocity.z);
 503
 504                 obj->mtype.phys_info.thrust.x   = INTEL_INT(obj->mtype.phys_info.thrust.x);
 505                 obj->mtype.phys_info.thrust.y   = INTEL_INT(obj->mtype.phys_info.thrust.y);
 506                 obj->mtype.phys_info.thrust.z   = INTEL_INT(obj->mtype.phys_info.thrust.z);
 507
 508                 obj->mtype.phys_info.mass               = INTEL_INT(obj->mtype.phys_info.mass);
 509                 obj->mtype.phys_info.drag               = INTEL_INT(obj->mtype.phys_info.drag);
 510                 obj->mtype.phys_info.brakes             = INTEL_INT(obj->mtype.phys_info.brakes);
 511
 512                 obj->mtype.phys_info.rotvel.x   = INTEL_INT(obj->mtype.phys_info.rotvel.x);
 513                 obj->mtype.phys_info.rotvel.y   = INTEL_INT(obj->mtype.phys_info.rotvel.y);
 514                 obj->mtype.phys_info.rotvel.z   = INTEL_INT(obj->mtype.phys_info.rotvel.z);
 515
 516                 obj->mtype.phys_info.rotthrust.x = INTEL_INT(obj->mtype.phys_info.rotthrust.x);
 517                 obj->mtype.phys_info.rotthrust.y = INTEL_INT(obj->mtype.phys_info.rotthrust.y);
 518                 obj->mtype.phys_info.rotthrust.z = INTEL_INT(obj->mtype.phys_info.rotthrust.z);
 519
 520                 obj->mtype.phys_info.turnroll   = INTEL_INT(obj->mtype.phys_info.turnroll);
 521                 obj->mtype.phys_info.flags              = INTEL_SHORT(obj->mtype.phys_info.flags);
 522
 523                 break;
 524
 525         case MT_SPINNING:
 526
 527                 obj->mtype.spin_rate.x = INTEL_INT(obj->mtype.spin_rate.x);
 528                 obj->mtype.spin_rate.y = INTEL_INT(obj->mtype.spin_rate.y);
 529                 obj->mtype.spin_rate.z = INTEL_INT(obj->mtype.spin_rate.z);
 530                 break;
 531         }
 532
 533         switch (obj->control_type) {
 534
 535         case CT_WEAPON:
 536                 obj->ctype.laser_info.parent_type               = INTEL_SHORT(obj->ctype.laser_info.parent_type);
 537                 obj->ctype.laser_info.parent_num                = INTEL_SHORT(obj->ctype.laser_info.parent_num);
 538                 obj->ctype.laser_info.parent_signature  = INTEL_INT(obj->ctype.laser_info.parent_signature);
 539                 obj->ctype.laser_info.creation_time             = INTEL_INT(obj->ctype.laser_info.creation_time);
 540                 obj->ctype.laser_info.last_hitobj               = INTEL_SHORT(obj->ctype.laser_info.last_hitobj);
 541                 obj->ctype.laser_info.track_goal                = INTEL_SHORT(obj->ctype.laser_info.track_goal);
 542                 obj->ctype.laser_info.multiplier                = INTEL_INT(obj->ctype.laser_info.multiplier);
 543                 break;
 544
 545         case CT_EXPLOSION:
 546                 obj->ctype.expl_info.spawn_time         = INTEL_INT(obj->ctype.expl_info.spawn_time);
 547                 obj->ctype.expl_info.delete_time        = INTEL_INT(obj->ctype.expl_info.delete_time);
 548                 obj->ctype.expl_info.delete_objnum      = INTEL_SHORT(obj->ctype.expl_info.delete_objnum);
 549                 obj->ctype.expl_info.attach_parent      = INTEL_SHORT(obj->ctype.expl_info.attach_parent);
 550                 obj->ctype.expl_info.prev_attach        = INTEL_SHORT(obj->ctype.expl_info.prev_attach);
 551                 obj->ctype.expl_info.next_attach        = INTEL_SHORT(obj->ctype.expl_info.next_attach);
 552                 break;
 553
 554         case CT_AI:
 555                 obj->ctype.ai_info.hide_segment                 = INTEL_SHORT(obj->ctype.ai_info.hide_segment);
 556                 obj->ctype.ai_info.hide_index                   = INTEL_SHORT(obj->ctype.ai_info.hide_index);
 557                 obj->ctype.ai_info.path_length                  = INTEL_SHORT(obj->ctype.ai_info.path_length);
 558                 obj->ctype.ai_info.danger_laser_num             = INTEL_SHORT(obj->ctype.ai_info.danger_laser_num);
 559                 obj->ctype.ai_info.danger_laser_signature = INTEL_INT(obj->ctype.ai_info.danger_laser_signature);
 560                 obj->ctype.ai_info.dying_start_time     = INTEL_INT(obj->ctype.ai_info.dying_start_time);
 561                 break;
 562
 563         case CT_LIGHT:
 564                 obj->ctype.light_info.intensity = INTEL_INT(obj->ctype.light_info.intensity);
 565                 break;
 566
 567         case CT_POWERUP:
 568                 obj->ctype.powerup_info.count = INTEL_INT(obj->ctype.powerup_info.count);
 569                 obj->ctype.powerup_info.creation_time = INTEL_INT(obj->ctype.powerup_info.creation_time);
 570                 //Below commented out 5/2/96 by Matt.  I asked Allender why it was
 571                 //here, and he didn't know, and it looks like it doesn't belong.
 572                 //if (obj->id == POW_VULCAN_WEAPON)
 573                 //      obj->ctype.powerup_info.count = VULCAN_WEAPON_AMMO_AMOUNT;
 574                 break;
 575
 576         }
 577
 578         switch (obj->render_type) {
 579
 580         case RT_MORPH:
 581         case RT_POLYOBJ: {
 582                 int i;
 583
 584                 obj->rtype.pobj_info.model_num          = INTEL_INT(obj->rtype.pobj_info.model_num);
 585
 586                 for (i=0;i<MAX_SUBMODELS;i++) {
 587                         obj->rtype.pobj_info.anim_angles[i].p = INTEL_INT(obj->rtype.pobj_info.anim_angles[i].p);
 588                         obj->rtype.pobj_info.anim_angles[i].b = INTEL_INT(obj->rtype.pobj_info.anim_angles[i].b);
 589                         obj->rtype.pobj_info.anim_angles[i].h = INTEL_INT(obj->rtype.pobj_info.anim_angles[i].h);
 590                 }
 591
 592                 obj->rtype.pobj_info.subobj_flags       = INTEL_INT(obj->rtype.pobj_info.subobj_flags);
 593                 obj->rtype.pobj_info.tmap_override      = INTEL_INT(obj->rtype.pobj_info.tmap_override);
 594                 obj->rtype.pobj_info.alt_textures       = INTEL_INT(obj->rtype.pobj_info.alt_textures);
 595                 break;
 596         }
 597
 598         case RT_WEAPON_VCLIP:
 599         case RT_HOSTAGE:
 600         case RT_POWERUP:
 601         case RT_FIREBALL:
 602                 obj->rtype.vclip_info.vclip_num = INTEL_INT(obj->rtype.vclip_info.vclip_num);
 603                 obj->rtype.vclip_info.frametime = INTEL_INT(obj->rtype.vclip_info.frametime);
 604                 break;
 605
 606         case RT_LASER:
 607                 break;
 608
 609         }
 610 //  END OF SWAPPING OBJECT STRUCTURE
 611
 612 }
 613
 614 #else
 615
 616
 617 // Calculates the checksum of a block of memory.
 618 ushort netmisc_calc_checksum( void * vptr, int len )
 619 {
 620         ubyte * ptr = (ubyte *)vptr;
 621         unsigned int sum1,sum2;
 622
 623         sum1 = sum2 = 0;
 624
 625         while(len--)    {
 626                 sum1 += *ptr++;
 627                 if (sum1 >= 255 ) sum1 -= 255;
 628                 sum2 += sum1;
 629         }
 630         sum2 %= 255;
 631
 632         return ((sum1<<8)+ sum2);
 633 }
 634
 635 #endif
 636 //--unused-- //Finds the difference between block1 and block2.  Fills in diff_buffer and
 637 //--unused-- //returns the size of diff_buffer.
 638 //--unused-- int netmisc_find_diff( void *block1, void *block2, int block_size, void *diff_buffer )
 639 //--unused-- {
 640 //--unused--    int mode;
 641 //--unused--    ushort *c1, *c2, *diff_start, *c3;
 642 //--unused--    int i, j, size, diff, n , same;
 643 //--unused--
 644 //--unused--    size=(block_size+1)/sizeof(ushort);
 645 //--unused--    c1 = (ushort *)block1;
 646 //--unused--    c2 = (ushort *)block2;
 647 //--unused--    c3 = (ushort *)diff_buffer;
 648 //--unused--
 649 //--unused--    mode = same = diff = n = 0;
 650 //--unused--
 651 //--unused--    //mprintf( 0, "=================================\n" );
 652 //--unused--
 653 //--unused--    for (i=0; i<size; i++, c1++, c2++ )     {
 654 //--unused--            if (*c1 != *c2 ) {
 655 //--unused--                    if (mode==0)    {
 656 //--unused--                            mode = 1;
 657 //--unused--                            //mprintf( 0, "%ds ", same );
 658 //--unused--                            c3[n++] = same;
 659 //--unused--                            same=0; diff=0;
 660 //--unused--                            diff_start = c2;
 661 //--unused--                    }
 662 //--unused--                    *c1 = *c2;
 663 //--unused--                    diff++;
 664 //--unused--                    if (diff==65535) {
 665 //--unused--                            mode = 0;
 666 //--unused--                            // send how many diff ones.
 667 //--unused--                            //mprintf( 0, "%dd ", diff );
 668 //--unused--                            c3[n++]=diff;
 669 //--unused--                            // send all the diff ones.
 670 //--unused--                            for (j=0; j<diff; j++ )
 671 //--unused--                                    c3[n++] = diff_start[j];
 672 //--unused--                            same=0; diff=0;
 673 //--unused--                            diff_start = c2;
 674 //--unused--                    }
 675 //--unused--            } else {
 676 //--unused--                    if (mode==1)    {
 677 //--unused--                            mode=0;
 678 //--unused--                            // send how many diff ones.
 679 //--unused--                            //mprintf( 0, "%dd ", diff );
 680 //--unused--                            c3[n++]=diff;
 681 //--unused--                            // send all the diff ones.
 682 //--unused--                            for (j=0; j<diff; j++ )
 683 //--unused--                                    c3[n++] = diff_start[j];
 684 //--unused--                            same=0; diff=0;
 685 //--unused--                            diff_start = c2;
 686 //--unused--                    }
 687 //--unused--                    same++;
 688 //--unused--                    if (same==65535)        {
 689 //--unused--                            mode=1;
 690 //--unused--                            // send how many the same
 691 //--unused--                            //mprintf( 0, "%ds ", same );
 692 //--unused--                            c3[n++] = same;
 693 //--unused--                            same=0; diff=0;
 694 //--unused--                            diff_start = c2;
 695 //--unused--                    }
 696 //--unused--            }
 697 //--unused--
 698 //--unused--    }
 699 //--unused--    if (mode==0)    {
 700 //--unused--            // send how many the same
 701 //--unused--            //mprintf( 0, "%ds ", same );
 702 //--unused--            c3[n++] = same;
 703 //--unused--    } else {
 704 //--unused--            // send how many diff ones.
 705 //--unused--            //mprintf( 0, "%dd ", diff );
 706 //--unused--            c3[n++]=diff;
 707 //--unused--            // send all the diff ones.
 708 //--unused--            for (j=0; j<diff; j++ )
 709 //--unused--                    c3[n++] = diff_start[j];
 710 //--unused--    }
 711 //--unused--
 712 //--unused--    //mprintf( 0, "=================================\n" );
 713 //--unused--
 714 //--unused--    return n*2;
 715 //--unused-- }
 716
 717 //--unused-- //Applies diff_buffer to block1 to create a new block1.  Returns the final
 718 //--unused-- //size of block1.
 719 //--unused-- int netmisc_apply_diff(void *block1, void *diff_buffer, int diff_size )
 720 //--unused-- {
 721 //--unused--    unsigned int i, j, n, size;
 722 //--unused--    ushort *c1, *c2;
 723 //--unused--
 724 //--unused--    //mprintf( 0, "=================================\n" );
 725 //--unused--    c1 = (ushort *)diff_buffer;
 726 //--unused--    c2 = (ushort *)block1;
 727 //--unused--
 728 //--unused--    size = diff_size/2;
 729 //--unused--
 730 //--unused--    i=j=0;
 731 //--unused--    while (1)       {
 732 //--unused--            j += c1[i];                     // Same
 733 //--unused--            //mprintf( 0, "%ds ", c1[i] );
 734 //--unused--            i++;
 735 //--unused--            if ( i>=size) break;
 736 //--unused--            n = c1[i];                      // ndiff
 737 //--unused--            //mprintf( 0, "%dd ", c1[i] );
 738 //--unused--            i++;
 739 //--unused--            if (n>0)        {
 740 //--unused--                    //Assert( n* < 256 );
 741 //--unused--                    memcpy( &c2[j], &c1[i], n*2 );
 742 //--unused--                    i += n;
 743 //--unused--                    j += n;
 744 //--unused--            }
 745 //--unused--            if ( i>=size) break;
 746 //--unused--    }
 747 //--unused--    //mprintf( 0, "=================================\n" );
 748 //--unused--
 749 //--unused--    return j*2;
 750 //--unused-- }
 751