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"
26 struct NetworkClientPlayerInfo
29 char name[MAX_PLAYER_NAME_LEN + 1];
30 struct NetworkClientPlayerInfo *next;
33 static struct NetworkClientPlayerInfo first_player =
40 struct NetworkLevelFileInfo
42 char *leveldir_identifier;
43 struct LevelFileInfo file_info;
44 struct LevelFileInfo tmpl_info;
45 boolean use_network_level_files;
46 boolean use_custom_template;
51 static TCPsocket sfd; /* TCP server socket */
52 static UDPsocket udp; /* UDP server socket */
53 static SDLNet_SocketSet rfds; /* socket set */
55 static struct NetworkBuffer *read_buffer = NULL;
56 static struct NetworkBuffer *write_buffer = NULL;
58 static boolean stop_network_game = FALSE;
59 static boolean stop_network_client = FALSE;
60 static char stop_network_client_message[MAX_OUTPUT_LINESIZE + 1];
62 static struct NetworkLevelFileInfo network_level;
64 static void DrawNetworkTextExt(char *message, int font_nr, boolean initialize)
66 static int xpos = 0, ypos = 0;
67 static int max_line_width = 0;
68 int font_width = getFontWidth(font_nr);
69 int font_height = getFontHeight(font_nr);
75 if (game_status == GAME_MODE_LOADING)
77 max_line_width = WIN_XSIZE;
79 xpos = (max_line_width - getTextWidth(message, font_nr)) / 2;
82 DrawText(xpos, ypos, message, font_nr);
89 max_line_width = SXSIZE;
91 DrawTextSCentered(ypos_1, font_nr, message);
93 /* calculate offset to x position caused by rounding */
94 int max_chars_per_line = max_line_width / font_width;
95 int xoffset = (max_line_width - max_chars_per_line * font_width) / 2;
101 Error(ERR_DEBUG, "========== %s ==========", message);
105 int max_chars_per_line = max_line_width / font_width;
106 int max_lines_per_text = 10;
107 int num_lines_spacing = (font_nr == FC_YELLOW ? 1 : 3);
108 int num_lines_printed = DrawTextBuffer(xpos, ypos, message, font_nr,
109 max_chars_per_line, -1,
110 max_lines_per_text, 0, -1,
113 ypos += (num_lines_printed + num_lines_spacing) * font_height;
115 Error(ERR_DEBUG, "%s", message);
121 static void DrawNetworkText(char *message)
123 DrawNetworkTextExt(message, FC_YELLOW, FALSE);
126 static void DrawNetworkText_Success(char *message)
128 DrawNetworkTextExt(message, FC_GREEN, FALSE);
131 static void DrawNetworkText_Failed(char *message)
133 DrawNetworkTextExt(message, FC_RED, FALSE);
136 static void DrawNetworkText_Title(char *message)
138 DrawNetworkTextExt(message, FC_GREEN, TRUE);
141 static void SendNetworkBufferToServer(struct NetworkBuffer *nb)
143 if (!network.enabled)
146 /* set message length header */
147 putNetwork32BitInteger(nb->buffer, nb->size - 4);
149 /* directly send the buffer to the network server */
150 SDLNet_TCP_Send(sfd, nb->buffer, nb->size);
153 struct NetworkClientPlayerInfo *getNetworkPlayer(int player_nr)
155 struct NetworkClientPlayerInfo *player = NULL;
157 for (player = &first_player; player; player = player->next)
158 if (player->nr == player_nr)
161 if (player == NULL) /* should not happen */
162 Error(ERR_EXIT, "protocol error: reference to non-existing player %d",
168 char *getNetworkPlayerName(int player_nr)
170 struct NetworkClientPlayerInfo *player;
173 return("the network game server");
174 else if (player_nr == first_player.nr)
177 for (player = &first_player; player; player = player->next)
178 if (player->nr == player_nr && strlen(player->name) > 0)
179 return(player->name);
181 return(EMPTY_PLAYER_NAME);
184 static void StartNetworkServer(int port)
189 #if defined(TARGET_SDL2)
190 server_thread = SDL_CreateThread(NetworkServerThread,
191 "NetworkServerThread", &p);
193 server_thread = SDL_CreateThread(NetworkServerThread, &p);
195 network_server = TRUE;
198 boolean ConnectToServer(char *hostname, int port)
204 if (read_buffer == NULL)
205 read_buffer = newNetworkBuffer();
207 if (write_buffer == NULL)
208 write_buffer = newNetworkBuffer();
210 DrawNetworkText_Title("Initializing Network");
213 port = DEFAULT_SERVER_PORT;
215 if (hostname == NULL)
217 // if no hostname given, try to auto-detect network server in local network
218 // by doing a UDP broadcast on the network server port and wait for answer
220 SDLNet_SocketSet udp_socket_set = SDLNet_AllocSocketSet(1);
222 Error(ERR_EXIT, "SDLNet_AllocSocketSet() failed: %s"), SDLNet_GetError();
224 udp = SDLNet_UDP_Open(0);
226 Error(ERR_EXIT, "SDLNet_UDP_Open() failed: %s", SDLNet_GetError());
228 if (SDLNet_UDP_AddSocket(udp_socket_set, udp) == -1)
229 Error(ERR_EXIT_NETWORK_SERVER, "SDLNet_TCP_AddSocket() failed: %s"),
232 char *data_ptr = "network server UDB broadcast";
233 int data_len = strlen(data_ptr) + 1;
234 IPaddress ip_address;
236 SDLNet_Write32(0xffffffff, &ip_address.host); /* 255.255.255.255 */
237 SDLNet_Write16(port, &ip_address.port);
249 SDLNet_UDP_Send(udp, -1, &packet);
251 DrawNetworkText("Looking for local network server ...");
253 /* wait for any local network server to answer UDP broadcast */
254 for (i = 0; i < 5; i++)
256 if (SDLNet_CheckSockets(udp_socket_set, 0) == 1)
258 int num_packets = SDLNet_UDP_Recv(udp, &packet);
260 if (num_packets == 1)
262 DrawNetworkText_Success("Network server found!");
264 server_host = SDLNet_Read32(&packet.address.host);
268 DrawNetworkText_Failed("No answer from network server!");
275 Delay_WithScreenUpdates(100);
279 if (server_host == 0)
280 DrawNetworkText_Failed("No network server found!");
283 rfds = SDLNet_AllocSocketSet(1);
287 SDLNet_ResolveHost(&ip, hostname, port);
289 if (ip.host == INADDR_NONE)
290 Error(ERR_EXIT, "cannot locate host '%s'", hostname);
292 server_host = SDLNet_Read32(&ip.host);
294 DrawNetworkText("Connecting to remote host ...");
298 // if no hostname was given and no network server was auto-detected in the
299 // local network, try to connect to a network server at the local host
300 if (server_host == 0)
301 server_host = 0x7f000001; /* 127.0.0.1 */
303 SDLNet_Write32(server_host, &ip.host);
304 SDLNet_Write16(port, &ip.port);
306 DrawNetworkText("Connecting to local host ...");
309 Error(ERR_DEBUG, "trying to connect to network server at %d.%d.%d.%d ...",
310 (server_host >> 24) & 0xff,
311 (server_host >> 16) & 0xff,
312 (server_host >> 8) & 0xff,
313 (server_host >> 0) & 0xff);
315 sfd = SDLNet_TCP_Open(&ip);
319 SDLNet_TCP_AddSocket(rfds, sfd);
321 DrawNetworkText_Success("Successfully connected!");
327 DrawNetworkText_Failed("Failed to connect to network server!");
329 printf("SDLNet_TCP_Open(): %s\n", SDLNet_GetError());
332 if (hostname) /* connect to specified server failed */
335 DrawNetworkText("Starting new local network server ...");
337 StartNetworkServer(port);
339 /* wait for server to start up and try connecting several times */
340 for (i = 0; i < 30; i++)
342 if ((sfd = SDLNet_TCP_Open(&ip))) /* connected */
344 DrawNetworkText_Success("Successfully connected!");
346 SDLNet_TCP_AddSocket(rfds, sfd);
350 Delay_WithScreenUpdates(100);
353 DrawNetworkText_Failed("Failed to connect to network server!");
355 /* when reaching this point, connect to newly started server has failed */
359 void SendToServer_PlayerName(char *player_name)
361 initNetworkBufferForWriting(write_buffer, OP_PLAYER_NAME, 0);
363 putNetworkBufferString(write_buffer, player_name);
365 SendNetworkBufferToServer(write_buffer);
367 Error(ERR_NETWORK_CLIENT, "you set your player name to \"%s\"", player_name);
370 void SendToServer_ProtocolVersion()
372 initNetworkBufferForWriting(write_buffer, OP_PROTOCOL_VERSION, 0);
374 putNetworkBuffer8BitInteger(write_buffer, PROTOCOL_VERSION_MAJOR);
375 putNetworkBuffer8BitInteger(write_buffer, PROTOCOL_VERSION_MINOR);
376 putNetworkBuffer8BitInteger(write_buffer, PROTOCOL_VERSION_PATCH);
378 SendNetworkBufferToServer(write_buffer);
381 void SendToServer_NrWanted(int nr_wanted)
383 initNetworkBufferForWriting(write_buffer, OP_NUMBER_WANTED, 0);
385 putNetworkBuffer8BitInteger(write_buffer, nr_wanted);
387 SendNetworkBufferToServer(write_buffer);
390 void SendToServer_LevelFile()
392 initNetworkBufferForWriting(write_buffer, OP_LEVEL_FILE, 0);
394 putNetworkBufferString( write_buffer, leveldir_current->identifier);
395 putNetworkBuffer16BitInteger(write_buffer, level.file_info.nr);
396 putNetworkBuffer8BitInteger( write_buffer, level.file_info.type);
397 putNetworkBuffer8BitInteger( write_buffer, level.file_info.packed);
398 putNetworkBufferString( write_buffer, level.file_info.basename);
399 putNetworkBufferFile( write_buffer, level.file_info.filename);
400 putNetworkBuffer8BitInteger( write_buffer, level.use_custom_template);
402 if (level.use_custom_template)
404 putNetworkBufferString(write_buffer, level_template.file_info.basename);
405 putNetworkBufferFile( write_buffer, level_template.file_info.filename);
408 SendNetworkBufferToServer(write_buffer);
410 setString(&network_level.leveldir_identifier, leveldir_current->identifier);
412 /* the sending client does not use network level files (but the real ones) */
413 network_level.use_network_level_files = FALSE;
416 printf("::: '%s'\n", leveldir_current->identifier);
417 printf("::: '%d'\n", level.file_info.nr);
418 printf("::: '%d'\n", level.file_info.type);
419 printf("::: '%d'\n", level.file_info.packed);
420 printf("::: '%s'\n", level.file_info.basename);
421 printf("::: '%s'\n", level.file_info.filename);
423 if (level.use_custom_template)
424 printf("::: '%s'\n", level_template.file_info.filename);
428 void SendToServer_StartPlaying()
430 unsigned int new_random_seed = InitRND(level.random_seed);
432 initNetworkBufferForWriting(write_buffer, OP_START_PLAYING, 0);
434 putNetworkBufferString( write_buffer, leveldir_current->identifier);
435 putNetworkBuffer16BitInteger(write_buffer, level_nr);
436 putNetworkBuffer32BitInteger(write_buffer, new_random_seed);
438 SendNetworkBufferToServer(write_buffer);
441 void SendToServer_PausePlaying()
443 initNetworkBufferForWriting(write_buffer, OP_PAUSE_PLAYING, 0);
445 SendNetworkBufferToServer(write_buffer);
448 void SendToServer_ContinuePlaying()
450 initNetworkBufferForWriting(write_buffer, OP_CONTINUE_PLAYING, 0);
452 SendNetworkBufferToServer(write_buffer);
455 void SendToServer_StopPlaying(int cause_for_stopping)
457 initNetworkBufferForWriting(write_buffer, OP_STOP_PLAYING, 0);
459 putNetworkBuffer8BitInteger(write_buffer, cause_for_stopping);
461 SendNetworkBufferToServer(write_buffer);
464 void SendToServer_MovePlayer(byte player_action)
466 initNetworkBufferForWriting(write_buffer, OP_MOVE_PLAYER, 0);
468 putNetworkBuffer8BitInteger(write_buffer, player_action);
470 SendNetworkBufferToServer(write_buffer);
473 static void Handle_OP_BAD_PROTOCOL_VERSION()
475 int protocol_version_major = getNetworkBuffer8BitInteger(read_buffer);
476 int protocol_version_minor = getNetworkBuffer8BitInteger(read_buffer);
478 Error(ERR_WARN, "protocol version mismatch");
479 Error(ERR_WARN, "server expects %d.%d.x instead of %d.%d.%d",
480 protocol_version_major,
481 protocol_version_minor,
482 PROTOCOL_VERSION_MAJOR,
483 PROTOCOL_VERSION_MINOR,
484 PROTOCOL_VERSION_PATCH);
486 sprintf(stop_network_client_message, "Network protocol version mismatch! Server expects version %d.%d.x instead of %d.%d.%d!",
487 protocol_version_major,
488 protocol_version_minor,
489 PROTOCOL_VERSION_MAJOR,
490 PROTOCOL_VERSION_MINOR,
491 PROTOCOL_VERSION_PATCH);
493 stop_network_client = TRUE;
496 static void Handle_OP_YOUR_NUMBER()
498 int old_client_nr = getNetworkBuffer8BitInteger(read_buffer);
499 int new_client_nr = getNetworkBuffer8BitInteger(read_buffer);
500 int new_index_nr = new_client_nr - 1;
501 struct PlayerInfo *old_local_player = local_player;
502 struct PlayerInfo *new_local_player = &stored_player[new_index_nr];
504 printf("OP_YOUR_NUMBER: %d\n", old_client_nr);
505 first_player.nr = new_client_nr;
507 if (old_local_player != new_local_player)
509 /* set relevant player settings and change to new player */
511 local_player = new_local_player;
513 old_local_player->connected_locally = FALSE;
514 new_local_player->connected_locally = TRUE;
516 old_local_player->connected_network = FALSE;
517 new_local_player->connected_network = TRUE;
520 if (first_player.nr > MAX_PLAYERS)
521 Error(ERR_EXIT, "sorry, more than %d players not allowed", MAX_PLAYERS);
523 Error(ERR_NETWORK_CLIENT, "you get client # %d", new_client_nr);
525 stored_player[new_index_nr].connected_network = TRUE;
528 static void Handle_OP_NUMBER_WANTED()
530 int old_client_nr = getNetworkBuffer8BitInteger(read_buffer);
531 int client_nr_wanted = getNetworkBuffer8BitInteger(read_buffer);
532 int new_client_nr = getNetworkBuffer8BitInteger(read_buffer);
533 int old_index_nr = old_client_nr - 1;
534 int new_index_nr = new_client_nr - 1;
535 int index_nr_wanted = client_nr_wanted - 1;
536 struct PlayerInfo *old_player = &stored_player[old_index_nr];
537 struct PlayerInfo *new_player = &stored_player[new_index_nr];
539 printf("OP_NUMBER_WANTED: %d\n", old_client_nr);
541 if (new_client_nr == client_nr_wanted) /* switching succeeded */
543 struct NetworkClientPlayerInfo *player;
545 if (old_client_nr != client_nr_wanted) /* client's nr has changed */
546 Error(ERR_NETWORK_CLIENT, "client %d switches to # %d",
547 old_client_nr, new_client_nr);
548 else if (old_client_nr == first_player.nr) /* local player keeps his nr */
549 Error(ERR_NETWORK_CLIENT, "keeping client # %d", new_client_nr);
551 if (old_client_nr != new_client_nr)
553 /* set relevant player settings and change to new player */
555 old_player->connected_network = FALSE;
556 new_player->connected_network = TRUE;
559 player = getNetworkPlayer(old_client_nr);
560 player->nr = new_client_nr;
562 if (old_player == local_player) /* local player switched */
564 local_player = new_player;
566 old_player->connected_locally = FALSE;
567 new_player->connected_locally = TRUE;
570 else if (old_client_nr == first_player.nr) /* failed -- local player? */
574 sprintf(request, "Sorry! Player %d already exists! You are player %d!",
575 index_nr_wanted + 1, new_index_nr + 1);
577 Request(request, REQ_CONFIRM);
579 Error(ERR_NETWORK_CLIENT, "cannot switch -- you keep client # %d",
583 if (game_status == GAME_MODE_MAIN)
584 DrawNetworkPlayers();
587 static void Handle_OP_PLAYER_NAME()
589 int player_nr = getNetworkBuffer8BitInteger(read_buffer);
590 char *player_name = getNetworkBufferString(read_buffer);
591 struct NetworkClientPlayerInfo *player = getNetworkPlayer(player_nr);
593 printf("OP_PLAYER_NAME: %d\n", player_nr);
595 strncpy(player->name, player_name, MAX_PLAYER_NAME_LEN);
596 player->name[MAX_PLAYER_NAME_LEN] = '\0';
598 Error(ERR_NETWORK_CLIENT, "client %d calls itself \"%s\"",
599 player_nr, player->name);
602 static void Handle_OP_PLAYER_CONNECTED()
604 struct NetworkClientPlayerInfo *player, *last_player = NULL;
605 int new_client_nr = getNetworkBuffer8BitInteger(read_buffer);
606 int new_index_nr = new_client_nr - 1;
608 printf("OP_PLAYER_CONNECTED: %d\n", new_client_nr);
609 Error(ERR_NETWORK_CLIENT, "new client %d connected", new_client_nr);
611 for (player = &first_player; player; player = player->next)
613 if (player->nr == new_client_nr)
614 Error(ERR_EXIT, "multiplayer server sent duplicate player id");
616 last_player = player;
619 last_player->next = player =
620 checked_malloc(sizeof(struct NetworkClientPlayerInfo));
621 player->nr = new_client_nr;
622 player->name[0] = '\0';
625 stored_player[new_index_nr].connected_network = TRUE;
628 static void Handle_OP_PLAYER_DISCONNECTED()
630 struct NetworkClientPlayerInfo *player, *player_disconnected;
631 int player_nr = getNetworkBuffer8BitInteger(read_buffer);
632 int index_nr = player_nr - 1;
634 printf("OP_PLAYER_DISCONNECTED: %d\n", player_nr);
635 player_disconnected = getNetworkPlayer(player_nr);
636 Error(ERR_NETWORK_CLIENT, "client %d (%s) disconnected",
637 player_nr, getNetworkPlayerName(player_nr));
639 for (player = &first_player; player; player = player->next)
640 if (player->next == player_disconnected)
641 player->next = player_disconnected->next;
642 free(player_disconnected);
644 stored_player[index_nr].connected_locally = FALSE;
645 stored_player[index_nr].connected_network = FALSE;
647 if (game_status == GAME_MODE_PLAYING)
651 sprintf(message, "Player %d left network server! Network game stopped!",
654 Request(message, REQ_CONFIRM | REQ_STAY_CLOSED);
656 SetGameStatus(GAME_MODE_MAIN);
660 else if (game_status == GAME_MODE_MAIN)
662 DrawNetworkPlayers();
666 static void Handle_OP_START_PLAYING()
668 int player_nr = getNetworkBuffer8BitInteger(read_buffer);
669 char *new_leveldir_identifier = getNetworkBufferString(read_buffer);
670 int new_level_nr = getNetworkBuffer16BitInteger(read_buffer);
671 unsigned int new_random_seed = getNetworkBuffer32BitInteger(read_buffer);
673 if (!strEqual(new_leveldir_identifier, network_level.leveldir_identifier))
675 Error(ERR_WARN, "no such level identifier: '%s'", new_leveldir_identifier);
677 stop_network_game = TRUE;
682 printf("OP_START_PLAYING: %d\n", player_nr);
683 Error(ERR_NETWORK_CLIENT,
684 "client %d starts game [level %d from level identifier '%s']\n",
685 player_nr, new_level_nr, new_leveldir_identifier);
687 LevelDirTree *new_leveldir =
688 getTreeInfoFromIdentifier(leveldir_first, new_leveldir_identifier);
690 if (new_leveldir != NULL)
692 leveldir_current = new_leveldir;
693 level_nr = new_level_nr;
698 if (network_level.use_network_level_files)
699 LoadLevelFromNetwork(&network_level.file_info,
700 &network_level.tmpl_info);
704 StartGameActions(FALSE, setup.autorecord, new_random_seed);
707 static void Handle_OP_PAUSE_PLAYING()
709 int player_nr = getNetworkBuffer8BitInteger(read_buffer);
711 printf("OP_PAUSE_PLAYING: %d\n", player_nr);
712 Error(ERR_NETWORK_CLIENT, "client %d pauses game", player_nr);
714 if (game_status == GAME_MODE_PLAYING)
717 DrawVideoDisplay(VIDEO_STATE_PAUSE_ON, 0);
721 static void Handle_OP_CONTINUE_PLAYING()
723 int player_nr = getNetworkBuffer8BitInteger(read_buffer);
725 printf("OP_CONTINUE_PLAYING: %d\n", player_nr);
726 Error(ERR_NETWORK_CLIENT, "client %d continues game", player_nr);
728 if (game_status == GAME_MODE_PLAYING)
730 tape.pausing = FALSE;
731 DrawVideoDisplay(VIDEO_STATE_PAUSE_OFF, 0);
735 static void Handle_OP_STOP_PLAYING()
737 int client_nr = getNetworkBuffer8BitInteger(read_buffer);
738 int cause_for_stopping = getNetworkBuffer8BitInteger(read_buffer);
740 printf("OP_STOP_PLAYING: %d [%d]\n", client_nr, cause_for_stopping);
741 Error(ERR_NETWORK_CLIENT, "client %d stops game [%d]",
742 client_nr, cause_for_stopping);
744 if (game_status == GAME_MODE_PLAYING)
746 int index_nr = client_nr - 1;
747 struct PlayerInfo *client_player = &stored_player[index_nr];
748 boolean stopped_by_remote_player = (!client_player->connected_locally);
751 sprintf(message, (cause_for_stopping == NETWORK_STOP_BY_PLAYER ?
752 "Network game stopped by player %d!" :
753 cause_for_stopping == NETWORK_STOP_BY_ERROR ?
754 "Network game stopped due to internal error!" :
755 "Network game stopped!"), client_nr);
757 if (cause_for_stopping != NETWORK_STOP_BY_PLAYER ||
758 stopped_by_remote_player)
759 Request(message, REQ_CONFIRM | REQ_STAY_CLOSED);
761 SetGameStatus(GAME_MODE_MAIN);
767 static void Handle_OP_MOVE_PLAYER()
769 int player_nr = getNetworkBuffer8BitInteger(read_buffer);
770 int server_frame_counter = getNetworkBuffer32BitInteger(read_buffer);
773 if (!network_playing)
776 if (server_frame_counter != FrameCounter)
778 Error(ERR_INFO, "frame counters of client %d and server out of sync",
780 Error(ERR_INFO, "frame counter of client is %d", FrameCounter);
781 Error(ERR_INFO, "frame counter of server is %d", server_frame_counter);
782 Error(ERR_INFO, "this should not happen -- please debug");
784 stop_network_game = TRUE;
789 /* copy valid player actions (will be set to 0 for not connected players) */
790 for (i = 0; i < MAX_PLAYERS; i++)
791 stored_player[i].effective_action =
792 getNetworkBuffer8BitInteger(read_buffer);
794 network_player_action_received = TRUE;
797 static void Handle_OP_BROADCAST_MESSAGE()
799 int player_nr = getNetworkBuffer8BitInteger(read_buffer);
801 printf("OP_BROADCAST_MESSAGE: %d\n", player_nr);
802 Error(ERR_NETWORK_CLIENT, "client %d sends message", player_nr);
805 static void Handle_OP_LEVEL_FILE()
807 int player_nr = getNetworkBuffer8BitInteger(read_buffer);
808 char *leveldir_identifier;
809 char *network_level_dir;
810 struct LevelFileInfo *file_info = &network_level.file_info;
811 struct LevelFileInfo *tmpl_info = &network_level.tmpl_info;
812 boolean use_custom_template;
814 setString(&network_level.leveldir_identifier, NULL);
815 setString(&network_level.file_info.basename, NULL);
816 setString(&network_level.file_info.filename, NULL);
817 setString(&network_level.tmpl_info.basename, NULL);
818 setString(&network_level.tmpl_info.filename, NULL);
820 printf("OP_LEVEL_FILE: %d\n", player_nr);
822 leveldir_identifier = getStringCopy(getNetworkBufferString(read_buffer));
823 network_level_dir = getNetworkLevelDir(leveldir_identifier);
825 file_info->nr = getNetworkBuffer16BitInteger(read_buffer);
826 file_info->type = getNetworkBuffer8BitInteger(read_buffer);
827 file_info->packed = getNetworkBuffer8BitInteger(read_buffer);
828 file_info->basename = getStringCopy(getNetworkBufferString(read_buffer));
829 file_info->filename = getPath2(network_level_dir, file_info->basename);
831 InitNetworkLevelDirectory(leveldir_identifier);
833 getNetworkBufferFile(read_buffer, file_info->filename);
835 use_custom_template = getNetworkBuffer8BitInteger(read_buffer);
836 if (use_custom_template)
838 *tmpl_info = *file_info;
840 tmpl_info->basename = getStringCopy(getNetworkBufferString(read_buffer));
841 tmpl_info->filename = getPath2(network_level_dir, tmpl_info->basename);
843 getNetworkBufferFile(read_buffer, tmpl_info->filename);
846 network_level.leveldir_identifier = leveldir_identifier;
847 network_level.use_custom_template = use_custom_template;
849 /* the receiving client(s) use(s) the transferred network level files */
850 network_level.use_network_level_files = TRUE;
853 printf("::: '%s'\n", leveldir_identifier);
854 printf("::: '%d'\n", file_info->nr);
855 printf("::: '%d'\n", file_info->type);
856 printf("::: '%d'\n", file_info->packed);
857 printf("::: '%s'\n", file_info->basename);
858 printf("::: '%s'\n", file_info->filename);
860 if (use_custom_template)
861 printf("::: '%s'\n", tmpl_info->filename);
865 static void HandleNetworkingMessage()
867 stop_network_game = FALSE;
869 initNetworkBufferForReading(read_buffer);
871 int message_type = getNetworkBuffer8BitInteger(read_buffer);
873 switch (message_type)
875 case OP_BAD_PROTOCOL_VERSION:
876 Handle_OP_BAD_PROTOCOL_VERSION();
880 Handle_OP_YOUR_NUMBER();
883 case OP_NUMBER_WANTED:
884 Handle_OP_NUMBER_WANTED();
888 Handle_OP_PLAYER_NAME();
891 case OP_PLAYER_CONNECTED:
892 Handle_OP_PLAYER_CONNECTED();
895 case OP_PLAYER_DISCONNECTED:
896 Handle_OP_PLAYER_DISCONNECTED();
899 case OP_START_PLAYING:
900 Handle_OP_START_PLAYING();
903 case OP_PAUSE_PLAYING:
904 Handle_OP_PAUSE_PLAYING();
907 case OP_CONTINUE_PLAYING:
908 Handle_OP_CONTINUE_PLAYING();
911 case OP_STOP_PLAYING:
912 Handle_OP_STOP_PLAYING();
916 Handle_OP_MOVE_PLAYER();
919 case OP_BROADCAST_MESSAGE:
920 Handle_OP_BROADCAST_MESSAGE();
924 Handle_OP_LEVEL_FILE();
929 Error(ERR_NETWORK_CLIENT,
930 "unknown opcode %d from server", message_type);
935 /* in case of internal error, stop network game */
936 if (stop_network_game)
937 SendToServer_StopPlaying(NETWORK_STOP_BY_ERROR);
940 static char *HandleNetworkingPackets()
944 /* ---------- check network server for activity ---------- */
946 int num_active_sockets = SDLNet_CheckSockets(rfds, 0);
948 if (num_active_sockets < 0)
949 return "Error checking network sockets!";
951 if (num_active_sockets == 0)
952 break; // no active sockets, stop here
954 /* ---------- read packets from network server ---------- */
956 initNetworkBufferForReceiving(read_buffer);
958 int num_bytes = receiveNetworkBufferPacket(read_buffer, sfd);
961 return "Error reading from network server!";
964 return "Connection to network server lost!";
966 HandleNetworkingMessage();
968 if (stop_network_client)
969 return stop_network_client_message;
975 static void FreeNetworkClientPlayerInfo(struct NetworkClientPlayerInfo *player)
981 FreeNetworkClientPlayerInfo(player->next);
983 checked_free(player);
986 static void HandleNetworkingDisconnect()
990 SDLNet_TCP_DelSocket(rfds, sfd);
991 SDLNet_TCP_Close(sfd);
993 network_playing = FALSE;
995 network.enabled = FALSE;
996 network.connected = FALSE;
998 setup.network_mode = FALSE;
1000 for (i = 0; i < MAX_PLAYERS; i++)
1001 stored_player[i].connected_network = FALSE;
1003 FreeNetworkClientPlayerInfo(first_player.next);
1005 first_player.nr = 0;
1006 first_player.next = NULL;
1009 void HandleNetworking()
1011 char *error_message = HandleNetworkingPackets();
1013 if (error_message != NULL)
1015 HandleNetworkingDisconnect();
1017 if (game_status == GAME_MODE_PLAYING)
1019 Request(error_message, REQ_CONFIRM | REQ_STAY_CLOSED);
1021 SetGameStatus(GAME_MODE_MAIN);
1027 Request(error_message, REQ_CONFIRM);
1029 if (game_status == GAME_MODE_MAIN)
1030 ClearNetworkPlayers();
1035 void DisconnectFromNetworkServer()
1037 DrawNetworkText_Title("Terminating Network");
1038 DrawNetworkText("Disconnecting from network server ...");
1040 HandleNetworkingDisconnect();
1042 DrawNetworkText_Success("Successfully disconnected!");
1044 /* short time to recognize result of network initialization */
1045 Delay_WithScreenUpdates(1000);