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 boolean hasPathSeparator(char *s)
187 return (strchr(s, '/') != NULL);
190 static void StartNetworkServer(int port)
195 #if defined(TARGET_SDL2)
196 server_thread = SDL_CreateThread(NetworkServerThread,
197 "NetworkServerThread", &p);
199 server_thread = SDL_CreateThread(NetworkServerThread, &p);
201 network_server = TRUE;
204 boolean ConnectToServer(char *hostname, int port)
210 if (read_buffer == NULL)
211 read_buffer = newNetworkBuffer();
213 if (write_buffer == NULL)
214 write_buffer = newNetworkBuffer();
216 DrawNetworkText_Title("Initializing Network");
219 port = DEFAULT_SERVER_PORT;
221 if (hostname == NULL)
223 // if no hostname given, try to auto-detect network server in local network
224 // by doing a UDP broadcast on the network server port and wait for answer
226 SDLNet_SocketSet udp_socket_set = SDLNet_AllocSocketSet(1);
228 Error(ERR_EXIT, "SDLNet_AllocSocketSet() failed: %s"), SDLNet_GetError();
230 udp = SDLNet_UDP_Open(0);
232 Error(ERR_EXIT, "SDLNet_UDP_Open() failed: %s", SDLNet_GetError());
234 if (SDLNet_UDP_AddSocket(udp_socket_set, udp) == -1)
235 Error(ERR_EXIT_NETWORK_SERVER, "SDLNet_TCP_AddSocket() failed: %s"),
238 char *data_ptr = "network server UDB broadcast";
239 int data_len = strlen(data_ptr) + 1;
240 IPaddress ip_address;
242 SDLNet_Write32(0xffffffff, &ip_address.host); /* 255.255.255.255 */
243 SDLNet_Write16(port, &ip_address.port);
255 SDLNet_UDP_Send(udp, -1, &packet);
257 DrawNetworkText("Looking for local network server ...");
259 /* wait for any local network server to answer UDP broadcast */
260 for (i = 0; i < 5; i++)
262 if (SDLNet_CheckSockets(udp_socket_set, 0) == 1)
264 int num_packets = SDLNet_UDP_Recv(udp, &packet);
266 if (num_packets == 1)
268 DrawNetworkText_Success("Network server found!");
270 server_host = SDLNet_Read32(&packet.address.host);
274 DrawNetworkText_Failed("No answer from network server!");
281 Delay_WithScreenUpdates(100);
285 if (server_host == 0)
286 DrawNetworkText_Failed("No network server found!");
289 rfds = SDLNet_AllocSocketSet(1);
293 SDLNet_ResolveHost(&ip, hostname, port);
295 if (ip.host == INADDR_NONE)
296 Error(ERR_EXIT, "cannot locate host '%s'", hostname);
298 server_host = SDLNet_Read32(&ip.host);
300 DrawNetworkText("Connecting to remote host ...");
304 // if no hostname was given and no network server was auto-detected in the
305 // local network, try to connect to a network server at the local host
306 if (server_host == 0)
307 server_host = 0x7f000001; /* 127.0.0.1 */
309 SDLNet_Write32(server_host, &ip.host);
310 SDLNet_Write16(port, &ip.port);
312 DrawNetworkText("Connecting to local host ...");
315 Error(ERR_DEBUG, "trying to connect to network server at %d.%d.%d.%d ...",
316 (server_host >> 24) & 0xff,
317 (server_host >> 16) & 0xff,
318 (server_host >> 8) & 0xff,
319 (server_host >> 0) & 0xff);
321 sfd = SDLNet_TCP_Open(&ip);
325 SDLNet_TCP_AddSocket(rfds, sfd);
327 DrawNetworkText_Success("Successfully connected!");
333 DrawNetworkText_Failed("Failed to connect to network server!");
335 printf("SDLNet_TCP_Open(): %s\n", SDLNet_GetError());
338 if (hostname) /* connect to specified server failed */
341 DrawNetworkText("Starting new local network server ...");
343 StartNetworkServer(port);
345 /* wait for server to start up and try connecting several times */
346 for (i = 0; i < 30; i++)
348 if ((sfd = SDLNet_TCP_Open(&ip))) /* connected */
350 DrawNetworkText_Success("Successfully connected!");
352 SDLNet_TCP_AddSocket(rfds, sfd);
356 Delay_WithScreenUpdates(100);
359 DrawNetworkText_Failed("Failed to connect to network server!");
361 /* when reaching this point, connect to newly started server has failed */
365 void SendToServer_PlayerName(char *player_name)
367 initNetworkBufferForWriting(write_buffer, OP_PLAYER_NAME, 0);
369 putNetworkBufferString(write_buffer, player_name);
371 SendNetworkBufferToServer(write_buffer);
373 Error(ERR_NETWORK_CLIENT, "you set your player name to \"%s\"", player_name);
376 void SendToServer_ProtocolVersion()
378 initNetworkBufferForWriting(write_buffer, OP_PROTOCOL_VERSION, 0);
380 putNetworkBuffer8BitInteger(write_buffer, PROTOCOL_VERSION_MAJOR);
381 putNetworkBuffer8BitInteger(write_buffer, PROTOCOL_VERSION_MINOR);
382 putNetworkBuffer8BitInteger(write_buffer, PROTOCOL_VERSION_PATCH);
384 SendNetworkBufferToServer(write_buffer);
387 void SendToServer_NrWanted(int nr_wanted)
389 initNetworkBufferForWriting(write_buffer, OP_NUMBER_WANTED, 0);
391 putNetworkBuffer8BitInteger(write_buffer, nr_wanted);
393 SendNetworkBufferToServer(write_buffer);
396 void SendToServer_LevelFile()
398 initNetworkBufferForWriting(write_buffer, OP_LEVEL_FILE, 0);
400 putNetworkBufferString( write_buffer, leveldir_current->identifier);
401 putNetworkBuffer16BitInteger(write_buffer, level.file_info.nr);
402 putNetworkBuffer8BitInteger( write_buffer, level.file_info.type);
403 putNetworkBuffer8BitInteger( write_buffer, level.file_info.packed);
404 putNetworkBufferString( write_buffer, level.file_info.basename);
405 putNetworkBufferFile( write_buffer, level.file_info.filename);
406 putNetworkBuffer8BitInteger( write_buffer, level.use_custom_template);
408 if (level.use_custom_template)
410 putNetworkBufferString(write_buffer, level_template.file_info.basename);
411 putNetworkBufferFile( write_buffer, level_template.file_info.filename);
414 SendNetworkBufferToServer(write_buffer);
416 setString(&network_level.leveldir_identifier, leveldir_current->identifier);
418 /* the sending client does not use network level files (but the real ones) */
419 network_level.use_network_level_files = FALSE;
422 printf("::: '%s'\n", leveldir_current->identifier);
423 printf("::: '%d'\n", level.file_info.nr);
424 printf("::: '%d'\n", level.file_info.type);
425 printf("::: '%d'\n", level.file_info.packed);
426 printf("::: '%s'\n", level.file_info.basename);
427 printf("::: '%s'\n", level.file_info.filename);
429 if (level.use_custom_template)
430 printf("::: '%s'\n", level_template.file_info.filename);
434 void SendToServer_StartPlaying()
436 unsigned int new_random_seed = InitRND(level.random_seed);
438 initNetworkBufferForWriting(write_buffer, OP_START_PLAYING, 0);
440 putNetworkBufferString( write_buffer, leveldir_current->identifier);
441 putNetworkBuffer16BitInteger(write_buffer, level_nr);
442 putNetworkBuffer32BitInteger(write_buffer, new_random_seed);
444 SendNetworkBufferToServer(write_buffer);
447 void SendToServer_PausePlaying()
449 initNetworkBufferForWriting(write_buffer, OP_PAUSE_PLAYING, 0);
451 SendNetworkBufferToServer(write_buffer);
454 void SendToServer_ContinuePlaying()
456 initNetworkBufferForWriting(write_buffer, OP_CONTINUE_PLAYING, 0);
458 SendNetworkBufferToServer(write_buffer);
461 void SendToServer_StopPlaying(int cause_for_stopping)
463 initNetworkBufferForWriting(write_buffer, OP_STOP_PLAYING, 0);
465 putNetworkBuffer8BitInteger(write_buffer, cause_for_stopping);
467 SendNetworkBufferToServer(write_buffer);
470 void SendToServer_MovePlayer(byte player_action)
472 initNetworkBufferForWriting(write_buffer, OP_MOVE_PLAYER, 0);
474 putNetworkBuffer8BitInteger(write_buffer, player_action);
476 SendNetworkBufferToServer(write_buffer);
479 static void Handle_OP_BAD_PROTOCOL_VERSION()
481 int protocol_version_major = getNetworkBuffer8BitInteger(read_buffer);
482 int protocol_version_minor = getNetworkBuffer8BitInteger(read_buffer);
484 Error(ERR_WARN, "protocol version mismatch");
485 Error(ERR_WARN, "server expects %d.%d.x instead of %d.%d.%d",
486 protocol_version_major,
487 protocol_version_minor,
488 PROTOCOL_VERSION_MAJOR,
489 PROTOCOL_VERSION_MINOR,
490 PROTOCOL_VERSION_PATCH);
492 sprintf(stop_network_client_message, "Network protocol version mismatch! Server expects version %d.%d.x instead of %d.%d.%d!",
493 protocol_version_major,
494 protocol_version_minor,
495 PROTOCOL_VERSION_MAJOR,
496 PROTOCOL_VERSION_MINOR,
497 PROTOCOL_VERSION_PATCH);
499 stop_network_client = TRUE;
502 static void Handle_OP_YOUR_NUMBER()
504 int old_client_nr = getNetworkBuffer8BitInteger(read_buffer);
505 int new_client_nr = getNetworkBuffer8BitInteger(read_buffer);
506 int new_index_nr = new_client_nr - 1;
507 struct PlayerInfo *old_local_player = local_player;
508 struct PlayerInfo *new_local_player = &stored_player[new_index_nr];
510 printf("OP_YOUR_NUMBER: %d\n", old_client_nr);
511 first_player.nr = new_client_nr;
513 if (old_local_player != new_local_player)
515 /* set relevant player settings and change to new player */
517 local_player = new_local_player;
519 old_local_player->connected_locally = FALSE;
520 new_local_player->connected_locally = TRUE;
522 old_local_player->connected_network = FALSE;
523 new_local_player->connected_network = TRUE;
526 if (first_player.nr > MAX_PLAYERS)
527 Error(ERR_EXIT, "sorry, more than %d players not allowed", MAX_PLAYERS);
529 Error(ERR_NETWORK_CLIENT, "you get client # %d", new_client_nr);
531 stored_player[new_index_nr].connected_network = TRUE;
534 static void Handle_OP_NUMBER_WANTED()
536 int old_client_nr = getNetworkBuffer8BitInteger(read_buffer);
537 int client_nr_wanted = getNetworkBuffer8BitInteger(read_buffer);
538 int new_client_nr = getNetworkBuffer8BitInteger(read_buffer);
539 int old_index_nr = old_client_nr - 1;
540 int new_index_nr = new_client_nr - 1;
541 int index_nr_wanted = client_nr_wanted - 1;
542 struct PlayerInfo *old_player = &stored_player[old_index_nr];
543 struct PlayerInfo *new_player = &stored_player[new_index_nr];
545 printf("OP_NUMBER_WANTED: %d\n", old_client_nr);
547 if (new_client_nr == client_nr_wanted) /* switching succeeded */
549 struct NetworkClientPlayerInfo *player;
551 if (old_client_nr != client_nr_wanted) /* client's nr has changed */
552 Error(ERR_NETWORK_CLIENT, "client %d switches to # %d",
553 old_client_nr, new_client_nr);
554 else if (old_client_nr == first_player.nr) /* local player keeps his nr */
555 Error(ERR_NETWORK_CLIENT, "keeping client # %d", new_client_nr);
557 if (old_client_nr != new_client_nr)
559 /* set relevant player settings and change to new player */
561 old_player->connected_network = FALSE;
562 new_player->connected_network = TRUE;
565 player = getNetworkPlayer(old_client_nr);
566 player->nr = new_client_nr;
568 if (old_player == local_player) /* local player switched */
570 local_player = new_player;
572 old_player->connected_locally = FALSE;
573 new_player->connected_locally = TRUE;
576 else if (old_client_nr == first_player.nr) /* failed -- local player? */
580 sprintf(request, "Sorry! Player %d already exists! You are player %d!",
581 index_nr_wanted + 1, new_index_nr + 1);
583 Request(request, REQ_CONFIRM);
585 Error(ERR_NETWORK_CLIENT, "cannot switch -- you keep client # %d",
589 if (game_status == GAME_MODE_MAIN)
590 DrawNetworkPlayers();
593 static void Handle_OP_PLAYER_NAME()
595 int player_nr = getNetworkBuffer8BitInteger(read_buffer);
596 char *player_name = getNetworkBufferString(read_buffer);
597 struct NetworkClientPlayerInfo *player = getNetworkPlayer(player_nr);
599 printf("OP_PLAYER_NAME: %d\n", player_nr);
601 strncpy(player->name, player_name, MAX_PLAYER_NAME_LEN);
602 player->name[MAX_PLAYER_NAME_LEN] = '\0';
604 Error(ERR_NETWORK_CLIENT, "client %d calls itself \"%s\"",
605 player_nr, player->name);
608 static void Handle_OP_PLAYER_CONNECTED()
610 struct NetworkClientPlayerInfo *player, *last_player = NULL;
611 int new_client_nr = getNetworkBuffer8BitInteger(read_buffer);
612 int new_index_nr = new_client_nr - 1;
614 printf("OP_PLAYER_CONNECTED: %d\n", new_client_nr);
615 Error(ERR_NETWORK_CLIENT, "new client %d connected", new_client_nr);
617 for (player = &first_player; player; player = player->next)
619 if (player->nr == new_client_nr)
620 Error(ERR_EXIT, "multiplayer server sent duplicate player id");
622 last_player = player;
625 last_player->next = player =
626 checked_malloc(sizeof(struct NetworkClientPlayerInfo));
627 player->nr = new_client_nr;
628 player->name[0] = '\0';
631 stored_player[new_index_nr].connected_network = TRUE;
634 static void Handle_OP_PLAYER_DISCONNECTED()
636 struct NetworkClientPlayerInfo *player, *player_disconnected;
637 int player_nr = getNetworkBuffer8BitInteger(read_buffer);
638 int index_nr = player_nr - 1;
640 printf("OP_PLAYER_DISCONNECTED: %d\n", player_nr);
641 player_disconnected = getNetworkPlayer(player_nr);
642 Error(ERR_NETWORK_CLIENT, "client %d (%s) disconnected",
643 player_nr, getNetworkPlayerName(player_nr));
645 for (player = &first_player; player; player = player->next)
646 if (player->next == player_disconnected)
647 player->next = player_disconnected->next;
648 free(player_disconnected);
650 stored_player[index_nr].connected_locally = FALSE;
651 stored_player[index_nr].connected_network = FALSE;
653 if (game_status == GAME_MODE_PLAYING)
657 sprintf(message, "Player %d left network server! Network game stopped!",
660 Request(message, REQ_CONFIRM | REQ_STAY_CLOSED);
662 SetGameStatus(GAME_MODE_MAIN);
666 else if (game_status == GAME_MODE_MAIN)
668 DrawNetworkPlayers();
672 static void Handle_OP_START_PLAYING()
674 int player_nr = getNetworkBuffer8BitInteger(read_buffer);
675 char *new_leveldir_identifier = getNetworkBufferString(read_buffer);
676 int new_level_nr = getNetworkBuffer16BitInteger(read_buffer);
677 unsigned int new_random_seed = getNetworkBuffer32BitInteger(read_buffer);
679 if (!strEqual(new_leveldir_identifier, network_level.leveldir_identifier))
681 Error(ERR_WARN, "no such level identifier: '%s'", new_leveldir_identifier);
683 stop_network_game = TRUE;
688 printf("OP_START_PLAYING: %d\n", player_nr);
689 Error(ERR_NETWORK_CLIENT,
690 "client %d starts game [level %d from level identifier '%s']\n",
691 player_nr, new_level_nr, new_leveldir_identifier);
693 LevelDirTree *new_leveldir =
694 getTreeInfoFromIdentifier(leveldir_first, new_leveldir_identifier);
696 if (new_leveldir != NULL)
698 leveldir_current = new_leveldir;
699 level_nr = new_level_nr;
702 SetLevelSetInfo(new_leveldir_identifier, new_level_nr);
704 /* needed if level set of network game changed graphics, sounds or music */
705 ReloadCustomArtwork(0);
709 if (network_level.use_network_level_files)
710 LoadLevelFromNetwork(&network_level.file_info,
711 &network_level.tmpl_info);
715 StartGameActions(FALSE, setup.autorecord, new_random_seed);
718 static void Handle_OP_PAUSE_PLAYING()
720 int player_nr = getNetworkBuffer8BitInteger(read_buffer);
722 printf("OP_PAUSE_PLAYING: %d\n", player_nr);
723 Error(ERR_NETWORK_CLIENT, "client %d pauses game", player_nr);
725 if (game_status == GAME_MODE_PLAYING)
728 DrawVideoDisplay(VIDEO_STATE_PAUSE_ON, 0);
732 static void Handle_OP_CONTINUE_PLAYING()
734 int player_nr = getNetworkBuffer8BitInteger(read_buffer);
736 printf("OP_CONTINUE_PLAYING: %d\n", player_nr);
737 Error(ERR_NETWORK_CLIENT, "client %d continues game", player_nr);
739 if (game_status == GAME_MODE_PLAYING)
741 tape.pausing = FALSE;
742 DrawVideoDisplay(VIDEO_STATE_PAUSE_OFF, 0);
746 static void Handle_OP_STOP_PLAYING()
748 int client_nr = getNetworkBuffer8BitInteger(read_buffer);
749 int cause_for_stopping = getNetworkBuffer8BitInteger(read_buffer);
751 printf("OP_STOP_PLAYING: %d [%d]\n", client_nr, cause_for_stopping);
752 Error(ERR_NETWORK_CLIENT, "client %d stops game [%d]",
753 client_nr, cause_for_stopping);
755 if (game_status == GAME_MODE_PLAYING)
757 int index_nr = client_nr - 1;
758 struct PlayerInfo *client_player = &stored_player[index_nr];
759 boolean stopped_by_remote_player = (!client_player->connected_locally);
762 sprintf(message, (cause_for_stopping == NETWORK_STOP_BY_PLAYER ?
763 "Network game stopped by player %d!" :
764 cause_for_stopping == NETWORK_STOP_BY_ERROR ?
765 "Network game stopped due to internal error!" :
766 "Network game stopped!"), client_nr);
768 if (cause_for_stopping != NETWORK_STOP_BY_PLAYER ||
769 stopped_by_remote_player)
770 Request(message, REQ_CONFIRM | REQ_STAY_CLOSED);
772 SetGameStatus(GAME_MODE_MAIN);
778 static void Handle_OP_MOVE_PLAYER()
780 int player_nr = getNetworkBuffer8BitInteger(read_buffer);
781 int server_frame_counter = getNetworkBuffer32BitInteger(read_buffer);
784 if (!network_playing)
787 if (server_frame_counter != FrameCounter)
789 Error(ERR_INFO, "frame counters of client %d and server out of sync",
791 Error(ERR_INFO, "frame counter of client is %d", FrameCounter);
792 Error(ERR_INFO, "frame counter of server is %d", server_frame_counter);
793 Error(ERR_INFO, "this should not happen -- please debug");
795 stop_network_game = TRUE;
800 /* copy valid player actions (will be set to 0 for not connected players) */
801 for (i = 0; i < MAX_PLAYERS; i++)
802 stored_player[i].effective_action =
803 getNetworkBuffer8BitInteger(read_buffer);
805 network_player_action_received = TRUE;
808 static void Handle_OP_BROADCAST_MESSAGE()
810 int player_nr = getNetworkBuffer8BitInteger(read_buffer);
812 printf("OP_BROADCAST_MESSAGE: %d\n", player_nr);
813 Error(ERR_NETWORK_CLIENT, "client %d sends message", player_nr);
816 static void Handle_OP_LEVEL_FILE()
818 int player_nr = getNetworkBuffer8BitInteger(read_buffer);
819 char *leveldir_identifier;
820 char *network_level_dir;
821 struct LevelFileInfo *file_info = &network_level.file_info;
822 struct LevelFileInfo *tmpl_info = &network_level.tmpl_info;
823 boolean use_custom_template;
825 setString(&network_level.leveldir_identifier, NULL);
826 setString(&network_level.file_info.basename, NULL);
827 setString(&network_level.file_info.filename, NULL);
828 setString(&network_level.tmpl_info.basename, NULL);
829 setString(&network_level.tmpl_info.filename, NULL);
831 printf("OP_LEVEL_FILE: %d\n", player_nr);
833 leveldir_identifier = getStringCopy(getNetworkBufferString(read_buffer));
835 if (hasPathSeparator(leveldir_identifier))
836 Error(ERR_EXIT, "protocol error: invalid filename from network client");
838 InitNetworkLevelDirectory(leveldir_identifier);
840 network_level_dir = getNetworkLevelDir(leveldir_identifier);
842 file_info->nr = getNetworkBuffer16BitInteger(read_buffer);
843 file_info->type = getNetworkBuffer8BitInteger(read_buffer);
844 file_info->packed = getNetworkBuffer8BitInteger(read_buffer);
845 file_info->basename = getStringCopy(getNetworkBufferString(read_buffer));
846 file_info->filename = getPath2(network_level_dir, file_info->basename);
848 if (hasPathSeparator(file_info->basename))
849 Error(ERR_EXIT, "protocol error: invalid filename from network client");
851 getNetworkBufferFile(read_buffer, file_info->filename);
853 use_custom_template = getNetworkBuffer8BitInteger(read_buffer);
854 if (use_custom_template)
856 *tmpl_info = *file_info;
858 tmpl_info->basename = getStringCopy(getNetworkBufferString(read_buffer));
859 tmpl_info->filename = getPath2(network_level_dir, tmpl_info->basename);
861 if (hasPathSeparator(tmpl_info->basename))
862 Error(ERR_EXIT, "protocol error: invalid filename from network client");
864 getNetworkBufferFile(read_buffer, tmpl_info->filename);
867 network_level.leveldir_identifier = leveldir_identifier;
868 network_level.use_custom_template = use_custom_template;
870 /* the receiving client(s) use(s) the transferred network level files */
871 network_level.use_network_level_files = TRUE;
874 printf("::: '%s'\n", leveldir_identifier);
875 printf("::: '%d'\n", file_info->nr);
876 printf("::: '%d'\n", file_info->type);
877 printf("::: '%d'\n", file_info->packed);
878 printf("::: '%s'\n", file_info->basename);
879 printf("::: '%s'\n", file_info->filename);
881 if (use_custom_template)
882 printf("::: '%s'\n", tmpl_info->filename);
886 static void HandleNetworkingMessage()
888 stop_network_game = FALSE;
890 initNetworkBufferForReading(read_buffer);
892 int message_type = getNetworkBuffer8BitInteger(read_buffer);
894 switch (message_type)
896 case OP_BAD_PROTOCOL_VERSION:
897 Handle_OP_BAD_PROTOCOL_VERSION();
901 Handle_OP_YOUR_NUMBER();
904 case OP_NUMBER_WANTED:
905 Handle_OP_NUMBER_WANTED();
909 Handle_OP_PLAYER_NAME();
912 case OP_PLAYER_CONNECTED:
913 Handle_OP_PLAYER_CONNECTED();
916 case OP_PLAYER_DISCONNECTED:
917 Handle_OP_PLAYER_DISCONNECTED();
920 case OP_START_PLAYING:
921 Handle_OP_START_PLAYING();
924 case OP_PAUSE_PLAYING:
925 Handle_OP_PAUSE_PLAYING();
928 case OP_CONTINUE_PLAYING:
929 Handle_OP_CONTINUE_PLAYING();
932 case OP_STOP_PLAYING:
933 Handle_OP_STOP_PLAYING();
937 Handle_OP_MOVE_PLAYER();
940 case OP_BROADCAST_MESSAGE:
941 Handle_OP_BROADCAST_MESSAGE();
945 Handle_OP_LEVEL_FILE();
950 Error(ERR_NETWORK_CLIENT,
951 "unknown opcode %d from server", message_type);
956 /* in case of internal error, stop network game */
957 if (stop_network_game)
958 SendToServer_StopPlaying(NETWORK_STOP_BY_ERROR);
961 static char *HandleNetworkingPackets()
965 /* ---------- check network server for activity ---------- */
967 int num_active_sockets = SDLNet_CheckSockets(rfds, 0);
969 if (num_active_sockets < 0)
970 return "Error checking network sockets!";
972 if (num_active_sockets == 0)
973 break; // no active sockets, stop here
975 /* ---------- read packets from network server ---------- */
977 initNetworkBufferForReceiving(read_buffer);
979 int num_bytes = receiveNetworkBufferPacket(read_buffer, sfd);
982 return "Error reading from network server!";
985 return "Connection to network server lost!";
987 HandleNetworkingMessage();
989 if (stop_network_client)
990 return stop_network_client_message;
996 static void FreeNetworkClientPlayerInfo(struct NetworkClientPlayerInfo *player)
1002 FreeNetworkClientPlayerInfo(player->next);
1004 checked_free(player);
1007 static void HandleNetworkingDisconnect()
1011 SDLNet_TCP_DelSocket(rfds, sfd);
1012 SDLNet_TCP_Close(sfd);
1014 network_playing = FALSE;
1016 network.enabled = FALSE;
1017 network.connected = FALSE;
1019 setup.network_mode = FALSE;
1021 for (i = 0; i < MAX_PLAYERS; i++)
1022 stored_player[i].connected_network = FALSE;
1024 FreeNetworkClientPlayerInfo(first_player.next);
1026 first_player.nr = 0;
1027 first_player.next = NULL;
1030 void HandleNetworking()
1032 char *error_message = HandleNetworkingPackets();
1034 if (error_message != NULL)
1036 HandleNetworkingDisconnect();
1038 if (game_status == GAME_MODE_PLAYING)
1040 Request(error_message, REQ_CONFIRM | REQ_STAY_CLOSED);
1042 SetGameStatus(GAME_MODE_MAIN);
1048 Request(error_message, REQ_CONFIRM);
1050 if (game_status == GAME_MODE_MAIN)
1051 ClearNetworkPlayers();
1056 void DisconnectFromNetworkServer()
1058 DrawNetworkText_Title("Terminating Network");
1059 DrawNetworkText("Disconnecting from network server ...");
1061 HandleNetworkingDisconnect();
1063 DrawNetworkText_Success("Successfully disconnected!");
1065 /* short time to recognize result of network initialization */
1066 Delay_WithScreenUpdates(1000);