1 // ============================================================================
2 // Rocks'n'Diamonds - McDuffin Strikes Back!
3 // ----------------------------------------------------------------------------
4 // (c) 1995-2014 by Artsoft Entertainment
7 // http://www.artsoft.org/
8 // ----------------------------------------------------------------------------
10 // ============================================================================
15 #include "libgame/libgame.h"
27 struct NetworkClientPlayerInfo
30 char name[MAX_PLAYER_NAME_LEN + 1];
31 struct NetworkClientPlayerInfo *next;
34 static struct NetworkClientPlayerInfo first_player =
41 struct NetworkLevelFileInfo
43 char *leveldir_identifier;
44 struct LevelFileInfo file_info;
45 struct LevelFileInfo tmpl_info;
46 boolean use_network_level_files;
47 boolean use_custom_template;
52 static TCPsocket sfd; /* TCP server socket */
53 static UDPsocket udp; /* UDP server socket */
54 static SDLNet_SocketSet rfds; /* socket set */
56 static struct NetworkBuffer *read_buffer = NULL;
57 static struct NetworkBuffer *write_buffer = NULL;
59 static boolean stop_network_game = FALSE;
60 static boolean stop_network_client = FALSE;
61 static char stop_network_client_message[MAX_OUTPUT_LINESIZE + 1];
63 static struct NetworkLevelFileInfo network_level;
65 static void DrawNetworkTextExt(char *message, int font_nr, boolean initialize)
67 static int xpos = 0, ypos = 0;
68 static int max_line_width = 0;
69 int font_width = getFontWidth(font_nr);
70 int font_height = getFontHeight(font_nr);
76 if (game_status == GAME_MODE_LOADING)
78 max_line_width = WIN_XSIZE;
80 xpos = (max_line_width - getTextWidth(message, font_nr)) / 2;
83 DrawText(xpos, ypos, message, font_nr);
90 max_line_width = SXSIZE;
92 DrawTextSCentered(ypos_1, font_nr, message);
94 /* calculate offset to x position caused by rounding */
95 int max_chars_per_line = max_line_width / font_width;
96 int xoffset = (max_line_width - max_chars_per_line * font_width) / 2;
102 Error(ERR_DEBUG, "========== %s ==========", message);
106 int max_chars_per_line = max_line_width / font_width;
107 int max_lines_per_text = 10;
108 int num_lines_spacing = (font_nr == FC_YELLOW ? 1 : 3);
109 int num_lines_printed = DrawTextBuffer(xpos, ypos, message, font_nr,
110 max_chars_per_line, -1,
111 max_lines_per_text, 0, -1,
114 ypos += (num_lines_printed + num_lines_spacing) * font_height;
116 Error(ERR_DEBUG, "%s", message);
122 static void DrawNetworkText(char *message)
124 DrawNetworkTextExt(message, FC_YELLOW, FALSE);
127 static void DrawNetworkText_Success(char *message)
129 DrawNetworkTextExt(message, FC_GREEN, FALSE);
132 static void DrawNetworkText_Failed(char *message)
134 DrawNetworkTextExt(message, FC_RED, FALSE);
137 static void DrawNetworkText_Title(char *message)
139 DrawNetworkTextExt(message, FC_GREEN, TRUE);
142 static void SendNetworkBufferToServer(struct NetworkBuffer *nb)
144 if (!network.enabled)
147 /* set message length header */
148 putNetwork32BitInteger(nb->buffer, nb->size - 4);
150 /* directly send the buffer to the network server */
151 SDLNet_TCP_Send(sfd, nb->buffer, nb->size);
154 struct NetworkClientPlayerInfo *getNetworkPlayer(int player_nr)
156 struct NetworkClientPlayerInfo *player = NULL;
158 for (player = &first_player; player; player = player->next)
159 if (player->nr == player_nr)
162 if (player == NULL) /* should not happen */
163 Error(ERR_EXIT, "protocol error: reference to non-existing player %d",
169 char *getNetworkPlayerName(int player_nr)
171 struct NetworkClientPlayerInfo *player;
174 return("the network game server");
175 else if (player_nr == first_player.nr)
178 for (player = &first_player; player; player = player->next)
179 if (player->nr == player_nr && strlen(player->name) > 0)
180 return(player->name);
182 return(EMPTY_PLAYER_NAME);
185 static void StartNetworkServer(int port)
190 #if defined(TARGET_SDL2)
191 server_thread = SDL_CreateThread(NetworkServerThread,
192 "NetworkServerThread", &p);
194 server_thread = SDL_CreateThread(NetworkServerThread, &p);
196 network_server = TRUE;
199 boolean ConnectToServer(char *hostname, int port)
205 if (read_buffer == NULL)
206 read_buffer = newNetworkBuffer();
208 if (write_buffer == NULL)
209 write_buffer = newNetworkBuffer();
211 DrawNetworkText_Title("Initializing Network");
214 port = DEFAULT_SERVER_PORT;
216 if (hostname == NULL)
218 // if no hostname given, try to auto-detect network server in local network
219 // by doing a UDP broadcast on the network server port and wait for answer
221 SDLNet_SocketSet udp_socket_set = SDLNet_AllocSocketSet(1);
223 Error(ERR_EXIT, "SDLNet_AllocSocketSet() failed: %s"), SDLNet_GetError();
225 udp = SDLNet_UDP_Open(0);
227 Error(ERR_EXIT, "SDLNet_UDP_Open() failed: %s", SDLNet_GetError());
229 if (SDLNet_UDP_AddSocket(udp_socket_set, udp) == -1)
230 Error(ERR_EXIT_NETWORK_SERVER, "SDLNet_TCP_AddSocket() failed: %s"),
233 char *data_ptr = "network server UDB broadcast";
234 int data_len = strlen(data_ptr) + 1;
235 IPaddress ip_address;
237 SDLNet_Write32(0xffffffff, &ip_address.host); /* 255.255.255.255 */
238 SDLNet_Write16(port, &ip_address.port);
250 SDLNet_UDP_Send(udp, -1, &packet);
252 DrawNetworkText("Looking for local network server ...");
254 /* wait for any local network server to answer UDP broadcast */
255 for (i = 0; i < 5; i++)
257 if (SDLNet_CheckSockets(udp_socket_set, 0) == 1)
259 int num_packets = SDLNet_UDP_Recv(udp, &packet);
261 if (num_packets == 1)
263 DrawNetworkText_Success("Network server found!");
265 server_host = SDLNet_Read32(&packet.address.host);
269 DrawNetworkText_Failed("No answer from network server!");
276 Delay_WithScreenUpdates(100);
280 if (server_host == 0)
281 DrawNetworkText_Failed("No network server found!");
284 rfds = SDLNet_AllocSocketSet(1);
288 SDLNet_ResolveHost(&ip, hostname, port);
290 if (ip.host == INADDR_NONE)
291 Error(ERR_EXIT, "cannot locate host '%s'", hostname);
293 server_host = SDLNet_Read32(&ip.host);
295 DrawNetworkText("Connecting to remote host ...");
299 // if no hostname was given and no network server was auto-detected in the
300 // local network, try to connect to a network server at the local host
301 if (server_host == 0)
302 server_host = 0x7f000001; /* 127.0.0.1 */
304 SDLNet_Write32(server_host, &ip.host);
305 SDLNet_Write16(port, &ip.port);
307 DrawNetworkText("Connecting to local host ...");
310 Error(ERR_DEBUG, "trying to connect to network server at %d.%d.%d.%d ...",
311 (server_host >> 24) & 0xff,
312 (server_host >> 16) & 0xff,
313 (server_host >> 8) & 0xff,
314 (server_host >> 0) & 0xff);
316 sfd = SDLNet_TCP_Open(&ip);
320 SDLNet_TCP_AddSocket(rfds, sfd);
322 DrawNetworkText_Success("Successfully connected!");
328 DrawNetworkText_Failed("Failed to connect to network server!");
330 printf("SDLNet_TCP_Open(): %s\n", SDLNet_GetError());
333 if (hostname) /* connect to specified server failed */
336 DrawNetworkText("Starting new local network server ...");
338 StartNetworkServer(port);
340 /* wait for server to start up and try connecting several times */
341 for (i = 0; i < 30; i++)
343 if ((sfd = SDLNet_TCP_Open(&ip))) /* connected */
345 DrawNetworkText_Success("Successfully connected!");
347 SDLNet_TCP_AddSocket(rfds, sfd);
351 Delay_WithScreenUpdates(100);
354 DrawNetworkText_Failed("Failed to connect to network server!");
356 /* when reaching this point, connect to newly started server has failed */
360 void SendToServer_PlayerName(char *player_name)
362 initNetworkBufferForWriting(write_buffer, OP_PLAYER_NAME, 0);
364 putNetworkBufferString(write_buffer, player_name);
366 SendNetworkBufferToServer(write_buffer);
368 Error(ERR_NETWORK_CLIENT, "you set your player name to \"%s\"", player_name);
371 void SendToServer_ProtocolVersion()
373 initNetworkBufferForWriting(write_buffer, OP_PROTOCOL_VERSION, 0);
375 putNetworkBuffer8BitInteger(write_buffer, PROTOCOL_VERSION_MAJOR);
376 putNetworkBuffer8BitInteger(write_buffer, PROTOCOL_VERSION_MINOR);
377 putNetworkBuffer8BitInteger(write_buffer, PROTOCOL_VERSION_PATCH);
379 SendNetworkBufferToServer(write_buffer);
382 void SendToServer_NrWanted(int nr_wanted)
384 initNetworkBufferForWriting(write_buffer, OP_NUMBER_WANTED, 0);
386 putNetworkBuffer8BitInteger(write_buffer, nr_wanted);
388 SendNetworkBufferToServer(write_buffer);
391 void SendToServer_LevelFile()
393 initNetworkBufferForWriting(write_buffer, OP_LEVEL_FILE, 0);
395 putNetworkBufferString( write_buffer, leveldir_current->identifier);
396 putNetworkBuffer16BitInteger(write_buffer, level.file_info.nr);
397 putNetworkBuffer8BitInteger( write_buffer, level.file_info.type);
398 putNetworkBuffer8BitInteger( write_buffer, level.file_info.packed);
399 putNetworkBufferString( write_buffer, level.file_info.basename);
400 putNetworkBufferFile( write_buffer, level.file_info.filename);
401 putNetworkBuffer8BitInteger( write_buffer, level.use_custom_template);
403 if (level.use_custom_template)
405 putNetworkBufferString(write_buffer, level_template.file_info.basename);
406 putNetworkBufferFile( write_buffer, level_template.file_info.filename);
409 SendNetworkBufferToServer(write_buffer);
411 setString(&network_level.leveldir_identifier, leveldir_current->identifier);
413 /* the sending client does not use network level files (but the real ones) */
414 network_level.use_network_level_files = FALSE;
417 printf("::: '%s'\n", leveldir_current->identifier);
418 printf("::: '%d'\n", level.file_info.nr);
419 printf("::: '%d'\n", level.file_info.type);
420 printf("::: '%d'\n", level.file_info.packed);
421 printf("::: '%s'\n", level.file_info.basename);
422 printf("::: '%s'\n", level.file_info.filename);
424 if (level.use_custom_template)
425 printf("::: '%s'\n", level_template.file_info.filename);
429 void SendToServer_StartPlaying()
431 unsigned int new_random_seed = InitRND(level.random_seed);
433 initNetworkBufferForWriting(write_buffer, OP_START_PLAYING, 0);
435 putNetworkBufferString( write_buffer, leveldir_current->identifier);
436 putNetworkBuffer16BitInteger(write_buffer, level_nr);
437 putNetworkBuffer32BitInteger(write_buffer, new_random_seed);
439 SendNetworkBufferToServer(write_buffer);
442 void SendToServer_PausePlaying()
444 initNetworkBufferForWriting(write_buffer, OP_PAUSE_PLAYING, 0);
446 SendNetworkBufferToServer(write_buffer);
449 void SendToServer_ContinuePlaying()
451 initNetworkBufferForWriting(write_buffer, OP_CONTINUE_PLAYING, 0);
453 SendNetworkBufferToServer(write_buffer);
456 void SendToServer_StopPlaying(int cause_for_stopping)
458 initNetworkBufferForWriting(write_buffer, OP_STOP_PLAYING, 0);
460 putNetworkBuffer8BitInteger(write_buffer, cause_for_stopping);
462 SendNetworkBufferToServer(write_buffer);
465 void SendToServer_MovePlayer(byte player_action)
467 initNetworkBufferForWriting(write_buffer, OP_MOVE_PLAYER, 0);
469 putNetworkBuffer8BitInteger(write_buffer, player_action);
471 SendNetworkBufferToServer(write_buffer);
474 static void Handle_OP_BAD_PROTOCOL_VERSION()
476 int protocol_version_major = getNetworkBuffer8BitInteger(read_buffer);
477 int protocol_version_minor = getNetworkBuffer8BitInteger(read_buffer);
479 Error(ERR_WARN, "protocol version mismatch");
480 Error(ERR_WARN, "server expects %d.%d.x instead of %d.%d.%d",
481 protocol_version_major,
482 protocol_version_minor,
483 PROTOCOL_VERSION_MAJOR,
484 PROTOCOL_VERSION_MINOR,
485 PROTOCOL_VERSION_PATCH);
487 sprintf(stop_network_client_message, "Network protocol version mismatch! Server expects version %d.%d.x instead of %d.%d.%d!",
488 protocol_version_major,
489 protocol_version_minor,
490 PROTOCOL_VERSION_MAJOR,
491 PROTOCOL_VERSION_MINOR,
492 PROTOCOL_VERSION_PATCH);
494 stop_network_client = TRUE;
497 static void Handle_OP_YOUR_NUMBER()
499 int old_client_nr = getNetworkBuffer8BitInteger(read_buffer);
500 int new_client_nr = getNetworkBuffer8BitInteger(read_buffer);
501 int new_index_nr = new_client_nr - 1;
502 struct PlayerInfo *old_local_player = local_player;
503 struct PlayerInfo *new_local_player = &stored_player[new_index_nr];
505 printf("OP_YOUR_NUMBER: %d\n", old_client_nr);
506 first_player.nr = new_client_nr;
508 if (old_local_player != new_local_player)
510 /* set relevant player settings and change to new player */
512 local_player = new_local_player;
514 old_local_player->connected_locally = FALSE;
515 new_local_player->connected_locally = TRUE;
517 old_local_player->connected_network = FALSE;
518 new_local_player->connected_network = TRUE;
521 if (first_player.nr > MAX_PLAYERS)
522 Error(ERR_EXIT, "sorry, more than %d players not allowed", MAX_PLAYERS);
524 Error(ERR_NETWORK_CLIENT, "you get client # %d", new_client_nr);
526 stored_player[new_index_nr].connected_network = TRUE;
529 static void Handle_OP_NUMBER_WANTED()
531 int old_client_nr = getNetworkBuffer8BitInteger(read_buffer);
532 int client_nr_wanted = getNetworkBuffer8BitInteger(read_buffer);
533 int new_client_nr = getNetworkBuffer8BitInteger(read_buffer);
534 int old_index_nr = old_client_nr - 1;
535 int new_index_nr = new_client_nr - 1;
536 int index_nr_wanted = client_nr_wanted - 1;
537 struct PlayerInfo *old_player = &stored_player[old_index_nr];
538 struct PlayerInfo *new_player = &stored_player[new_index_nr];
540 printf("OP_NUMBER_WANTED: %d\n", old_client_nr);
542 if (new_client_nr == client_nr_wanted) /* switching succeeded */
544 struct NetworkClientPlayerInfo *player;
546 if (old_client_nr != client_nr_wanted) /* client's nr has changed */
547 Error(ERR_NETWORK_CLIENT, "client %d switches to # %d",
548 old_client_nr, new_client_nr);
549 else if (old_client_nr == first_player.nr) /* local player keeps his nr */
550 Error(ERR_NETWORK_CLIENT, "keeping client # %d", new_client_nr);
552 if (old_client_nr != new_client_nr)
554 /* set relevant player settings and change to new player */
556 old_player->connected_network = FALSE;
557 new_player->connected_network = TRUE;
560 player = getNetworkPlayer(old_client_nr);
561 player->nr = new_client_nr;
563 if (old_player == local_player) /* local player switched */
565 local_player = new_player;
567 old_player->connected_locally = FALSE;
568 new_player->connected_locally = TRUE;
571 else if (old_client_nr == first_player.nr) /* failed -- local player? */
575 sprintf(request, "Sorry! Player %d already exists! You are player %d!",
576 index_nr_wanted + 1, new_index_nr + 1);
578 Request(request, REQ_CONFIRM);
580 Error(ERR_NETWORK_CLIENT, "cannot switch -- you keep client # %d",
584 if (game_status == GAME_MODE_MAIN)
585 DrawNetworkPlayers();
588 static void Handle_OP_PLAYER_NAME()
590 int player_nr = getNetworkBuffer8BitInteger(read_buffer);
591 char *player_name = getNetworkBufferString(read_buffer);
592 struct NetworkClientPlayerInfo *player = getNetworkPlayer(player_nr);
594 printf("OP_PLAYER_NAME: %d\n", player_nr);
596 strncpy(player->name, player_name, MAX_PLAYER_NAME_LEN);
597 player->name[MAX_PLAYER_NAME_LEN] = '\0';
599 Error(ERR_NETWORK_CLIENT, "client %d calls itself \"%s\"",
600 player_nr, player->name);
603 static void Handle_OP_PLAYER_CONNECTED()
605 struct NetworkClientPlayerInfo *player, *last_player = NULL;
606 int new_client_nr = getNetworkBuffer8BitInteger(read_buffer);
607 int new_index_nr = new_client_nr - 1;
609 printf("OP_PLAYER_CONNECTED: %d\n", new_client_nr);
610 Error(ERR_NETWORK_CLIENT, "new client %d connected", new_client_nr);
612 for (player = &first_player; player; player = player->next)
614 if (player->nr == new_client_nr)
615 Error(ERR_EXIT, "multiplayer server sent duplicate player id");
617 last_player = player;
620 last_player->next = player =
621 checked_malloc(sizeof(struct NetworkClientPlayerInfo));
622 player->nr = new_client_nr;
623 player->name[0] = '\0';
626 stored_player[new_index_nr].connected_network = TRUE;
629 static void Handle_OP_PLAYER_DISCONNECTED()
631 struct NetworkClientPlayerInfo *player, *player_disconnected;
632 int player_nr = getNetworkBuffer8BitInteger(read_buffer);
633 int index_nr = player_nr - 1;
635 printf("OP_PLAYER_DISCONNECTED: %d\n", player_nr);
636 player_disconnected = getNetworkPlayer(player_nr);
637 Error(ERR_NETWORK_CLIENT, "client %d (%s) disconnected",
638 player_nr, getNetworkPlayerName(player_nr));
640 for (player = &first_player; player; player = player->next)
641 if (player->next == player_disconnected)
642 player->next = player_disconnected->next;
643 free(player_disconnected);
645 stored_player[index_nr].connected_locally = FALSE;
646 stored_player[index_nr].connected_network = FALSE;
648 if (game_status == GAME_MODE_PLAYING)
652 sprintf(message, "Player %d left network server! Network game stopped!",
655 Request(message, REQ_CONFIRM | REQ_STAY_CLOSED);
657 SetGameStatus(GAME_MODE_MAIN);
661 else if (game_status == GAME_MODE_MAIN)
663 DrawNetworkPlayers();
667 static void Handle_OP_START_PLAYING()
669 int player_nr = getNetworkBuffer8BitInteger(read_buffer);
670 char *new_leveldir_identifier = getNetworkBufferString(read_buffer);
671 int new_level_nr = getNetworkBuffer16BitInteger(read_buffer);
672 unsigned int new_random_seed = getNetworkBuffer32BitInteger(read_buffer);
674 if (!strEqual(new_leveldir_identifier, network_level.leveldir_identifier))
676 Error(ERR_WARN, "no such level identifier: '%s'", new_leveldir_identifier);
678 stop_network_game = TRUE;
683 printf("OP_START_PLAYING: %d\n", player_nr);
684 Error(ERR_NETWORK_CLIENT,
685 "client %d starts game [level %d from level identifier '%s']\n",
686 player_nr, new_level_nr, new_leveldir_identifier);
688 LevelDirTree *new_leveldir =
689 getTreeInfoFromIdentifier(leveldir_first, new_leveldir_identifier);
691 if (new_leveldir != NULL)
693 leveldir_current = new_leveldir;
694 level_nr = new_level_nr;
697 SetLevelSetInfo(new_leveldir_identifier, new_level_nr);
699 /* needed if level set of network game changed graphics, sounds or music */
700 ReloadCustomArtwork(0);
704 if (network_level.use_network_level_files)
705 LoadLevelFromNetwork(&network_level.file_info,
706 &network_level.tmpl_info);
710 StartGameActions(FALSE, setup.autorecord, new_random_seed);
713 static void Handle_OP_PAUSE_PLAYING()
715 int player_nr = getNetworkBuffer8BitInteger(read_buffer);
717 printf("OP_PAUSE_PLAYING: %d\n", player_nr);
718 Error(ERR_NETWORK_CLIENT, "client %d pauses game", player_nr);
720 if (game_status == GAME_MODE_PLAYING)
723 DrawVideoDisplay(VIDEO_STATE_PAUSE_ON, 0);
727 static void Handle_OP_CONTINUE_PLAYING()
729 int player_nr = getNetworkBuffer8BitInteger(read_buffer);
731 printf("OP_CONTINUE_PLAYING: %d\n", player_nr);
732 Error(ERR_NETWORK_CLIENT, "client %d continues game", player_nr);
734 if (game_status == GAME_MODE_PLAYING)
736 tape.pausing = FALSE;
737 DrawVideoDisplay(VIDEO_STATE_PAUSE_OFF, 0);
741 static void Handle_OP_STOP_PLAYING()
743 int client_nr = getNetworkBuffer8BitInteger(read_buffer);
744 int cause_for_stopping = getNetworkBuffer8BitInteger(read_buffer);
746 printf("OP_STOP_PLAYING: %d [%d]\n", client_nr, cause_for_stopping);
747 Error(ERR_NETWORK_CLIENT, "client %d stops game [%d]",
748 client_nr, cause_for_stopping);
750 if (game_status == GAME_MODE_PLAYING)
752 int index_nr = client_nr - 1;
753 struct PlayerInfo *client_player = &stored_player[index_nr];
754 boolean stopped_by_remote_player = (!client_player->connected_locally);
757 sprintf(message, (cause_for_stopping == NETWORK_STOP_BY_PLAYER ?
758 "Network game stopped by player %d!" :
759 cause_for_stopping == NETWORK_STOP_BY_ERROR ?
760 "Network game stopped due to internal error!" :
761 "Network game stopped!"), client_nr);
763 if (cause_for_stopping != NETWORK_STOP_BY_PLAYER ||
764 stopped_by_remote_player)
765 Request(message, REQ_CONFIRM | REQ_STAY_CLOSED);
767 SetGameStatus(GAME_MODE_MAIN);
773 static void Handle_OP_MOVE_PLAYER()
775 int player_nr = getNetworkBuffer8BitInteger(read_buffer);
776 int server_frame_counter = getNetworkBuffer32BitInteger(read_buffer);
779 if (!network_playing)
782 if (server_frame_counter != FrameCounter)
784 Error(ERR_INFO, "frame counters of client %d and server out of sync",
786 Error(ERR_INFO, "frame counter of client is %d", FrameCounter);
787 Error(ERR_INFO, "frame counter of server is %d", server_frame_counter);
788 Error(ERR_INFO, "this should not happen -- please debug");
790 stop_network_game = TRUE;
795 /* copy valid player actions (will be set to 0 for not connected players) */
796 for (i = 0; i < MAX_PLAYERS; i++)
797 stored_player[i].effective_action =
798 getNetworkBuffer8BitInteger(read_buffer);
800 network_player_action_received = TRUE;
803 static void Handle_OP_BROADCAST_MESSAGE()
805 int player_nr = getNetworkBuffer8BitInteger(read_buffer);
807 printf("OP_BROADCAST_MESSAGE: %d\n", player_nr);
808 Error(ERR_NETWORK_CLIENT, "client %d sends message", player_nr);
811 static void Handle_OP_LEVEL_FILE()
813 int player_nr = getNetworkBuffer8BitInteger(read_buffer);
814 char *leveldir_identifier;
815 char *network_level_dir;
816 struct LevelFileInfo *file_info = &network_level.file_info;
817 struct LevelFileInfo *tmpl_info = &network_level.tmpl_info;
818 boolean use_custom_template;
820 setString(&network_level.leveldir_identifier, NULL);
821 setString(&network_level.file_info.basename, NULL);
822 setString(&network_level.file_info.filename, NULL);
823 setString(&network_level.tmpl_info.basename, NULL);
824 setString(&network_level.tmpl_info.filename, NULL);
826 printf("OP_LEVEL_FILE: %d\n", player_nr);
828 leveldir_identifier = getStringCopy(getNetworkBufferString(read_buffer));
830 InitNetworkLevelDirectory(leveldir_identifier);
832 network_level_dir = getNetworkLevelDir(leveldir_identifier);
834 file_info->nr = getNetworkBuffer16BitInteger(read_buffer);
835 file_info->type = getNetworkBuffer8BitInteger(read_buffer);
836 file_info->packed = getNetworkBuffer8BitInteger(read_buffer);
837 file_info->basename = getStringCopy(getNetworkBufferString(read_buffer));
838 file_info->filename = getPath2(network_level_dir, file_info->basename);
840 getNetworkBufferFile(read_buffer, file_info->filename);
842 use_custom_template = getNetworkBuffer8BitInteger(read_buffer);
843 if (use_custom_template)
845 *tmpl_info = *file_info;
847 tmpl_info->basename = getStringCopy(getNetworkBufferString(read_buffer));
848 tmpl_info->filename = getPath2(network_level_dir, tmpl_info->basename);
850 getNetworkBufferFile(read_buffer, tmpl_info->filename);
853 network_level.leveldir_identifier = leveldir_identifier;
854 network_level.use_custom_template = use_custom_template;
856 /* the receiving client(s) use(s) the transferred network level files */
857 network_level.use_network_level_files = TRUE;
860 printf("::: '%s'\n", leveldir_identifier);
861 printf("::: '%d'\n", file_info->nr);
862 printf("::: '%d'\n", file_info->type);
863 printf("::: '%d'\n", file_info->packed);
864 printf("::: '%s'\n", file_info->basename);
865 printf("::: '%s'\n", file_info->filename);
867 if (use_custom_template)
868 printf("::: '%s'\n", tmpl_info->filename);
872 static void HandleNetworkingMessage()
874 stop_network_game = FALSE;
876 initNetworkBufferForReading(read_buffer);
878 int message_type = getNetworkBuffer8BitInteger(read_buffer);
880 switch (message_type)
882 case OP_BAD_PROTOCOL_VERSION:
883 Handle_OP_BAD_PROTOCOL_VERSION();
887 Handle_OP_YOUR_NUMBER();
890 case OP_NUMBER_WANTED:
891 Handle_OP_NUMBER_WANTED();
895 Handle_OP_PLAYER_NAME();
898 case OP_PLAYER_CONNECTED:
899 Handle_OP_PLAYER_CONNECTED();
902 case OP_PLAYER_DISCONNECTED:
903 Handle_OP_PLAYER_DISCONNECTED();
906 case OP_START_PLAYING:
907 Handle_OP_START_PLAYING();
910 case OP_PAUSE_PLAYING:
911 Handle_OP_PAUSE_PLAYING();
914 case OP_CONTINUE_PLAYING:
915 Handle_OP_CONTINUE_PLAYING();
918 case OP_STOP_PLAYING:
919 Handle_OP_STOP_PLAYING();
923 Handle_OP_MOVE_PLAYER();
926 case OP_BROADCAST_MESSAGE:
927 Handle_OP_BROADCAST_MESSAGE();
931 Handle_OP_LEVEL_FILE();
936 Error(ERR_NETWORK_CLIENT,
937 "unknown opcode %d from server", message_type);
942 /* in case of internal error, stop network game */
943 if (stop_network_game)
944 SendToServer_StopPlaying(NETWORK_STOP_BY_ERROR);
947 static char *HandleNetworkingPackets()
951 /* ---------- check network server for activity ---------- */
953 int num_active_sockets = SDLNet_CheckSockets(rfds, 0);
955 if (num_active_sockets < 0)
956 return "Error checking network sockets!";
958 if (num_active_sockets == 0)
959 break; // no active sockets, stop here
961 /* ---------- read packets from network server ---------- */
963 initNetworkBufferForReceiving(read_buffer);
965 int num_bytes = receiveNetworkBufferPacket(read_buffer, sfd);
968 return "Error reading from network server!";
971 return "Connection to network server lost!";
973 HandleNetworkingMessage();
975 if (stop_network_client)
976 return stop_network_client_message;
982 static void FreeNetworkClientPlayerInfo(struct NetworkClientPlayerInfo *player)
988 FreeNetworkClientPlayerInfo(player->next);
990 checked_free(player);
993 static void HandleNetworkingDisconnect()
997 SDLNet_TCP_DelSocket(rfds, sfd);
998 SDLNet_TCP_Close(sfd);
1000 network_playing = FALSE;
1002 network.enabled = FALSE;
1003 network.connected = FALSE;
1005 setup.network_mode = FALSE;
1007 for (i = 0; i < MAX_PLAYERS; i++)
1008 stored_player[i].connected_network = FALSE;
1010 FreeNetworkClientPlayerInfo(first_player.next);
1012 first_player.nr = 0;
1013 first_player.next = NULL;
1016 void HandleNetworking()
1018 char *error_message = HandleNetworkingPackets();
1020 if (error_message != NULL)
1022 HandleNetworkingDisconnect();
1024 if (game_status == GAME_MODE_PLAYING)
1026 Request(error_message, REQ_CONFIRM | REQ_STAY_CLOSED);
1028 SetGameStatus(GAME_MODE_MAIN);
1034 Request(error_message, REQ_CONFIRM);
1036 if (game_status == GAME_MODE_MAIN)
1037 ClearNetworkPlayers();
1042 void DisconnectFromNetworkServer()
1044 DrawNetworkText_Title("Terminating Network");
1045 DrawNetworkText("Disconnecting from network server ...");
1047 HandleNetworkingDisconnect();
1049 DrawNetworkText_Success("Successfully disconnected!");
1051 /* short time to recognize result of network initialization */
1052 Delay_WithScreenUpdates(1000);