+void SendToServer_NrWanted(int nr_wanted)
+{
+ buf[1] = OP_NUMBER_WANTED;
+ buf[2] = nr_wanted;
+
+ sendbuf(3);
+}
+
+void SendToServer_StartPlaying()
+{
+ unsigned long new_random_seed = InitRND(NEW_RANDOMIZE);
+
+ buf[1] = OP_START_PLAYING;
+ buf[2] = (byte)(level_nr >> 8);
+ buf[3] = (byte)(level_nr & 0xff);
+ buf[4] = (byte)(leveldir_nr >> 8);
+ buf[5] = (byte)(leveldir_nr & 0xff);
+
+ buf[6] = (unsigned char)((new_random_seed >> 24) & 0xff);
+ buf[7] = (unsigned char)((new_random_seed >> 16) & 0xff);
+ buf[8] = (unsigned char)((new_random_seed >> 8) & 0xff);
+ buf[9] = (unsigned char)((new_random_seed >> 0) & 0xff);
+
+ strcpy(&buf[10], leveldir[leveldir_nr].name);
+
+ sendbuf(10 + strlen(leveldir[leveldir_nr].name)+1);
+}
+
+void SendToServer_PausePlaying()
+{
+ buf[1] = OP_PAUSE_PLAYING;
+
+ sendbuf(2);
+}
+
+void SendToServer_ContinuePlaying()
+{
+ buf[1] = OP_CONTINUE_PLAYING;
+
+ sendbuf(2);
+}
+
+void SendToServer_StopPlaying()
+{
+ buf[1] = OP_STOP_PLAYING;
+
+ sendbuf(2);
+}
+
+void SendToServer_MovePlayer(byte player_action)
+{
+ buf[1] = OP_MOVE_FIGURE;
+ buf[2] = player_action;
+
+ sendbuf(3);
+}
+
+static void Handle_OP_BAD_PROTOCOL_VERSION()
+{
+ Error(ERR_WARN, "protocol version mismatch");
+ Error(ERR_EXIT, "server expects %d.%d.x instead of %d.%d.%d",
+ buf[2], buf[3],
+ PROTOCOL_VERSION_1, PROTOCOL_VERSION_2, PROTOCOL_VERSION_3);
+}
+
+static void Handle_OP_YOUR_NUMBER()
+{
+ int new_client_nr = buf[2];
+ int new_index_nr = new_client_nr - 1;
+ struct PlayerInfo *old_local_player = local_player;
+ struct PlayerInfo *new_local_player = &stored_player[new_index_nr];
+
+ printf("OP_YOUR_NUMBER: %d\n", buf[0]);
+ me.nr = new_client_nr;
+
+ if (old_local_player != new_local_player)
+ {
+ /* copy existing player settings and change to new player */
+
+ *new_local_player = *old_local_player;
+ old_local_player->connected = FALSE;
+
+ local_player = new_local_player;
+ }
+
+ TestPlayer = new_index_nr;
+
+ if (me.nr > MAX_PLAYERS)
+ Error(ERR_EXIT, "sorry - no more than %d players", MAX_PLAYERS);
+
+ sprintf(msgbuf, "you get client # %d", new_client_nr);
+ sysmsg(msgbuf);
+}
+
+static void Handle_OP_NUMBER_WANTED()
+{
+ int client_nr_wanted = buf[2];
+ int old_client_nr = buf[0];
+ int new_client_nr = buf[3];
+ int old_index_nr = old_client_nr - 1;
+ int new_index_nr = new_client_nr - 1;
+ int index_nr_wanted = client_nr_wanted - 1;
+ struct PlayerInfo *old_player = &stored_player[old_index_nr];
+ struct PlayerInfo *new_player = &stored_player[new_index_nr];
+
+ printf("OP_NUMBER_WANTED: %d\n", buf[0]);
+
+ if (new_client_nr == client_nr_wanted) /* switching succeeded */
+ {
+ struct user *u;
+
+ if (old_client_nr != client_nr_wanted) /* client's nr has changed */
+ {
+ sprintf(msgbuf, "client %d switches to # %d",
+ old_client_nr, new_client_nr);
+ sysmsg(msgbuf);
+ }
+ else if (old_client_nr == me.nr) /* local player keeps his nr */
+ {
+ sprintf(msgbuf, "keeping client # %d", new_client_nr);
+ sysmsg(msgbuf);
+ }
+
+ if (old_client_nr != new_client_nr)
+ {
+ /* copy existing player settings and change to new player */
+
+ *new_player = *old_player;
+ old_player->connected = FALSE;
+ }
+
+ u = finduser(old_client_nr);
+ u->nr = new_client_nr;
+
+ if (old_player == local_player) /* local player switched */
+ local_player = new_player;
+
+
+ TestPlayer = new_index_nr;
+ }
+ else if (old_client_nr == me.nr) /* failed -- local player? */
+ {
+ char *color[] = { "yellow", "red", "green", "blue" };
+
+ sprintf(msgbuf, "Sorry ! %s player still exists ! You are %s player !",
+ color[index_nr_wanted], color[new_index_nr]);
+ Request(msgbuf, REQ_CONFIRM);
+
+ sprintf(msgbuf, "cannot switch -- you keep client # %d",
+ new_client_nr);
+ sysmsg(msgbuf);
+ }
+}
+
+static void Handle_OP_NICKNAME(unsigned int len)
+{
+ struct user *u;
+
+ printf("OP_NICKNAME: %d\n", buf[0]);
+ u = finduser(buf[0]);
+ buf[len] = 0;
+ sprintf(msgbuf, "client %d calls itself \"%s\"", buf[0], &buf[2]);
+ sysmsg(msgbuf);
+ strncpy(u->name, &buf[2], MAXNICKLEN);
+}
+
+static void Handle_OP_PLAYER_CONNECTED()
+{
+ struct user *u, *v = NULL;
+ int new_client_nr = buf[0];
+ int new_index_nr = new_client_nr - 1;
+
+ printf("OP_PLAYER_CONNECTED: %d\n", new_client_nr);
+ sprintf(msgbuf, "new client %d connected", new_client_nr);
+ sysmsg(msgbuf);
+
+ for (u = &me; u; u = u->next)
+ {
+ if (u->nr == new_client_nr)
+ Error(ERR_EXIT, "multiplayer server sent duplicate player id");
+ else
+ v = u;
+ }
+
+ v->next = u = checked_malloc(sizeof(struct user));
+ u->nr = new_client_nr;
+ u->name[0] = '\0';
+ u->next = NULL;
+
+ stored_player[new_index_nr].connected = TRUE;
+}
+
+static void Handle_OP_PLAYER_DISCONNECTED()
+{
+ struct user *u, *v;
+
+ printf("OP_PLAYER_DISCONNECTED: %d\n", buf[0]);
+ u = finduser(buf[0]);
+ sprintf(msgbuf, "client %d (%s) disconnected",
+ buf[0], get_user_name(buf[0]));
+ sysmsg(msgbuf);
+
+ for (v = &me; v; v = v->next)
+ if (v->next == u)
+ v->next = u->next;
+ free(u);
+}
+
+static void Handle_OP_START_PLAYING()
+{
+ int new_level_nr, new_leveldir_nr;
+ unsigned long new_random_seed;
+ unsigned char *new_leveldir_name;
+
+ /*
+ if (game_status == PLAYING)
+ break;
+ */
+
+ new_level_nr = (buf[2] << 8) + buf[3];
+ new_leveldir_nr = (buf[4] << 8) + buf[5];
+ new_random_seed =
+ (buf[6] << 24) | (buf[7] << 16) | (buf[8] << 8) | (buf[9]);
+ new_leveldir_name = &buf[10];
+
+ printf("OP_START_PLAYING: %d\n", buf[0]);
+ sprintf(msgbuf, "client %d starts game [level %d from levedir %d (%s)]\n",
+ buf[0],
+ new_level_nr,
+ new_leveldir_nr,
+ new_leveldir_name);
+ sysmsg(msgbuf);
+
+
+ if (strcmp(leveldir[new_leveldir_nr].name, new_leveldir_name) != 0)
+ Error(ERR_WARN, "no such level directory: '%s'",new_leveldir_name);
+
+ leveldir_nr = new_leveldir_nr;
+
+ /*
+ local_player->leveldir_nr = leveldir_nr;
+ */
+
+
+ /*
+ SaveLevelSetup();
+ */
+
+ /*
+ LoadPlayerInfo(PLAYER_LEVEL);
+ SavePlayerInfo(PLAYER_SETUP);
+ */
+
+
+ level_nr = new_level_nr;
+
+ TapeErase();
+ LoadTape(level_nr);
+
+ /*
+ GetPlayerConfig();
+ */
+
+ LoadLevel(level_nr);
+
+
+
+ if (setup.autorecord)
+ TapeStartRecording();
+
+
+
+ if (tape.recording)
+ tape.random_seed = new_random_seed;
+
+ InitRND(new_random_seed);
+
+
+ /*
+ printf("tape.random_seed == %d\n", tape.random_seed);
+ */
+
+ game_status = PLAYING;
+ InitGame();
+}
+
+static void Handle_OP_PAUSE_PLAYING()
+{
+ printf("OP_PAUSE_PLAYING: %d\n", buf[0]);
+ sprintf(msgbuf, "client %d pauses game", buf[0]);
+ sysmsg(msgbuf);
+
+ tape.pausing = TRUE;
+ DrawVideoDisplay(VIDEO_STATE_PAUSE_ON,0);
+}
+
+static void Handle_OP_CONTINUE_PLAYING()
+{
+ printf("OP_CONTINUE_PLAYING: %d\n", buf[0]);
+ sprintf(msgbuf, "client %d continues game", buf[0]);
+ sysmsg(msgbuf);
+
+ tape.pausing = FALSE;
+ DrawVideoDisplay(VIDEO_STATE_PAUSE_OFF,0);
+}
+
+static void Handle_OP_STOP_PLAYING()
+{
+ printf("OP_STOP_PLAYING: %d\n", buf[0]);
+ sprintf(msgbuf, "client %d stops game", buf[0]);
+ sysmsg(msgbuf);
+
+ game_status = MAINMENU;
+ DrawMainMenu();
+}
+
+static void Handle_OP_MOVE_FIGURE(unsigned int len)
+{
+ int frame_nr;
+ int i;
+
+ if (!network_playing)
+ return;
+
+ frame_nr =
+ (buf[2] << 24) | (buf[3] << 16) | (buf[4] << 8) | (buf[5]);
+
+ if (frame_nr != FrameCounter)
+ {
+ Error(ERR_RETURN, "client and servers frame counters out of sync");
+ Error(ERR_RETURN, "frame counter of client is %d", FrameCounter);
+ Error(ERR_RETURN, "frame counter of server is %d", frame_nr);
+ Error(ERR_EXIT, "this should not happen -- please debug");
+ }
+
+ /* copy valid player actions */
+ for (i=0; i<MAX_PLAYERS; i++)
+ stored_player[i].effective_action =
+ (i < len - 6 && stored_player[i].active ? buf[6 + i] : 0);
+
+ network_player_action_received = TRUE;
+
+ /*
+ sprintf(msgbuf, "frame %d: client %d moves player [0x%02x]",
+ FrameCounter, buf[0], buf[2]);
+ sysmsg(msgbuf);
+ */
+}
+
+static void HandleNetworkingMessages()