rnd-19981010-1
[rocksndiamonds.git] / src / network.c
index 14ea8656fbc75a882e95ae6e21f771f9379b6ae9..bb4ea67e6237ceaeed0ef3eb1322b4b4b45386d9 100644 (file)
 #include <errno.h>
 
 #include "network.h"
+#include "netserv.h"
 #include "game.h"
 #include "tape.h"
 #include "files.h"
+#include "tools.h"
 #include "misc.h"
 
-int norestart = 0;
-int nospeedup = 0;
-
-#define DEFAULTPORT 19503
-
-#define PROT_VERS_1 1
-#define PROT_VERS_2 0
-#define PROT_VERS_3 1
-
-#define OP_NICK 1
-#define OP_PLAY 2
-#define OP_MOVE 3
-#define OP_DRAW 4
-#define OP_LOST 5
-#define OP_GONE 6
-#define OP_CLEAR 7
-#define OP_NEW 8
-#define OP_LINES 9
-#define OP_GROW 10
-#define OP_MODE 11
-#define OP_LEVEL 12
-#define OP_BOT 13
-#define OP_KILL 14
-#define OP_PAUSE 15
-#define OP_CONT 16
-#define OP_VERSION 17
-#define OP_BADVERS 18
-#define OP_MSG 19
-#define OP_YOUARE 20
-#define OP_LINESTO 21
-#define OP_WON 22
-#define OP_ZERO 23
-
 #define MAXNICKLEN 14
 
 struct user
@@ -82,30 +51,18 @@ struct user me =
 
 /* server stuff */
 
-#define BUFLEN         4096
-
 int sfd;
-unsigned char realbuf[512], readbuf[BUFLEN], writbuf[BUFLEN];
+unsigned char realbuf[512], readbuf[MAX_BUFFER_SIZE], writbuf[MAX_BUFFER_SIZE];
 unsigned char *buf = realbuf + 4;
 int nread = 0, nwrite = 0;
 
-/* like memcpy, but guaranteed to handle overlap when s <= t */
-void copydown(char *s, char *t, int n)
-{
-  for (; n; n--)
-    *(s++) = *(t++);
-}
-
 void sysmsg(char *s)
 {
-  printf("** %s\n", s);
-  fflush(stdout);
-}
-
-void fatal(char *s)
-{
-  fprintf(stderr, "%s.\n", s);
-  exit(1);
+  if (verbose)
+  {
+    printf("** %s\n", s);
+    fflush(stdout);
+  }
 }
 
 void *mmalloc(int n)
@@ -142,10 +99,15 @@ void sendbuf(int len)
     realbuf[0] = realbuf[1] = realbuf[2] = 0;
     realbuf[3] = (unsigned char)len;
     buf[0] = 0;
-    if (nwrite + 4 + len >= BUFLEN)
+    if (nwrite + 4 + len >= MAX_BUFFER_SIZE)
       fatal("Internal error: send buffer overflow");
     memcpy(writbuf + nwrite, realbuf, 4 + len);
     nwrite += 4 + len;
+
+
+    flushbuf();
+
+
   }
 }
 
@@ -177,42 +139,24 @@ char *get_user_name(unsigned char c)
   return("no name");
 }
 
-void startserver()
+void InitNetworkServer(int port)
 {
-  char *options[2];
-  int n = 0;
-
-  options[0] = options[1] = NULL;
-  if (norestart)
-    options[n++] = "-norestart";
-  if (nospeedup)
-    options[n++] = "-nospeedup";
-
   switch (fork())
   {
     case 0:
-      execlp(
-#ifdef XTRISPATH
-      XTRISPATH "/rnd_server",
-#else
-      "rnd_server",
-#endif
-      "rnd_server", "-once", "-v", options[0], options[1], NULL);
-
-      fprintf(stderr, "Can't start server '%s'.\n",
-#ifdef XTRISPATH
-       XTRISPATH "/rnd_server"
-#else
-       "rnd_server"
-#endif
-             );
-
-      _exit(1);
-    
+      NetworkServer(port, !serveronly);
+
+      /* never reached */
+      exit(0);
+
     case -1:
-      fatal("fork() failed");
-    
+      Error(ERR_RETURN,
+           "cannot create network server process - no network games");
+      standalone = TRUE;
+      return;
+
     default:
+      /* we are parent process -- resume normal operation */
       return;
   }
 }
@@ -253,7 +197,9 @@ BOOL ConnectToServer(char *host, int port)
     if (!host)
     {
       printf("No rocksndiamonds server on localhost - starting up one ...\n");
-      startserver();
+
+      InitNetworkServer(port);
+
       for (i=0; i<6; i++)
       {
        u_sleep(500000);
@@ -279,7 +225,7 @@ void SendToServer_Nickname(char *nickname)
 {
   static char msgbuf[300];
 
-  buf[1] = OP_NICK;
+  buf[1] = OP_NICKNAME;
   memcpy(&buf[2], nickname, strlen(nickname));
   sendbuf(2 + strlen(nickname));
   sprintf(msgbuf, "you set your nick to \"%s\"", nickname);
@@ -288,28 +234,47 @@ void SendToServer_Nickname(char *nickname)
 
 void SendToServer_ProtocolVersion()
 {
-  buf[1] = OP_VERSION;
+  buf[1] = OP_PROTOCOL_VERSION;
   buf[2] = PROT_VERS_1;
   buf[3] = PROT_VERS_2;
   buf[4] = PROT_VERS_3;
+
   sendbuf(5);
 }
 
+void SendToServer_NrWanted(int nr_wanted)
+{
+  buf[1] = OP_NUMBER_WANTED;
+  buf[2] = nr_wanted;
+
+  sendbuf(3);
+}
+
 void SendToServer_StartPlaying()
 {
-  buf[1] = OP_PLAY;
-  buf[2] = (unsigned char)(level_nr / 256);
-  buf[3] = (unsigned char)(level_nr % 256);
-  buf[4] = (unsigned char)(leveldir_nr / 256);
-  buf[5] = (unsigned char)(leveldir_nr % 256);
-  strcpy(&buf[6], leveldir[leveldir_nr].name);
-  sendbuf(strlen(leveldir[leveldir_nr].name)+1 + 6);
+  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_MovePlayer(byte player_action)
 {
-  buf[1] = OP_MOVE;
+  buf[1] = OP_MOVE_FIGURE;
   buf[2] = player_action;
+
   sendbuf(3);
 }
 
@@ -331,16 +296,69 @@ void handlemessages()
 
     switch(buf[1])
     {
-      case OP_YOUARE:
-       printf("OP_YOUARE: %d\n", buf[0]);
-       me.nr = buf[0];
+      case OP_YOUR_NUMBER:
+      {
+       int new_client_nr = buf[2];
+       int new_index_nr = new_client_nr - 1;
+
+       printf("OP_YOUR_NUMBER: %d\n", buf[0]);
+       me.nr = new_client_nr;
+
+       stored_player[new_index_nr] = *local_player;
+       local_player = &stored_player[new_index_nr];
 
-       TestPlayer = buf[0] - 1;
+       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);
 
        break;
+      }
+
+      case OP_NUMBER_WANTED:
+      {
+       int client_nr_wanted = buf[2];
+       int new_client_nr = buf[3];
+       int new_index_nr = new_client_nr - 1;
 
-      case OP_NEW:
-       printf("OP_NEW: %d\n", buf[0]);
+       printf("OP_NUMBER_WANTED: %d\n", buf[0]);
+
+       if (new_client_nr != client_nr_wanted)
+       {
+         char *color[] = { "yellow", "red", "green", "blue" };
+
+         sprintf(msgbuf, "Sorry ! You are %s player !",
+                 color[new_index_nr]);
+         Request(msgbuf, REQ_CONFIRM);
+
+         sprintf(msgbuf, "cannot switch -- you keep client # %d",
+                 new_client_nr);
+         sysmsg(msgbuf);
+       }
+       else
+       {
+         if (me.nr != client_nr_wanted)
+           sprintf(msgbuf, "switching to client # %d", new_client_nr);
+         else
+           sprintf(msgbuf, "keeping client # %d", new_client_nr);
+         sysmsg(msgbuf);
+
+         me.nr = new_client_nr;
+
+         stored_player[new_index_nr] = *local_player;
+         local_player = &stored_player[new_index_nr];
+
+         TestPlayer = new_index_nr;
+       }
+
+       break;
+      }
+
+      case OP_PLAYER_CONNECTED:
+       printf("OP_PLAYER_CONNECTED: %d\n", buf[0]);
        sprintf(msgbuf, "new client %d connected", buf[0]);
        sysmsg(msgbuf);
 
@@ -359,8 +377,8 @@ void handlemessages()
 
        break;
 
-      case OP_NICK:
-       printf("OP_NICK: %d\n", buf[0]);
+      case OP_NICKNAME:
+       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]);
@@ -382,59 +400,106 @@ void handlemessages()
 
        break;
 
-      case OP_BADVERS:
+      case OP_BAD_PROTOCOL_VERSION:
        Error(ERR_RETURN, "protocol version mismatch");
        Error(ERR_EXIT, "server expects %d.%d.x instead of %d.%d.%d",
              buf[2], buf[3], PROT_VERS_1, PROT_VERS_2, PROT_VERS_3);
        break;
 
-      case OP_PLAY:
-       printf("OP_PLAY: %d\n", buf[0]);
+      case 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],
-               (buf[2] << 8) + buf[3],
-               (buf[4] << 8) + buf[5],
-               &buf[6]);
+               new_level_nr,
+               new_leveldir_nr,
+               new_leveldir_name);
        sysmsg(msgbuf);
 
-       if (strcmp(leveldir[(buf[4] << 8) + buf[5]].name, &buf[6]) == 0)
-       {
-         leveldir_nr = (buf[4] << 8) + buf[5];
 
-         local_player->leveldir_nr = leveldir_nr;
-         LoadPlayerInfo(PLAYER_LEVEL);
-         SavePlayerInfo(PLAYER_SETUP);
+       if (strcmp(leveldir[new_leveldir_nr].name, new_leveldir_name) != 0)
+         Error(ERR_RETURN, "no such level directory: '%s'",new_leveldir_name);
 
-         level_nr = (buf[2] << 8) + buf[3];
+       leveldir_nr = new_leveldir_nr;
 
-         TapeErase();
-         LoadLevelTape(level_nr);
+       local_player->leveldir_nr = leveldir_nr;
+       LoadPlayerInfo(PLAYER_LEVEL);
+       SavePlayerInfo(PLAYER_SETUP);
 
-         GetPlayerConfig();
-         LoadLevel(level_nr);
+       level_nr = new_level_nr;
 
-         {
-           if (autorecord_on)
-             TapeStartRecording();
+       TapeErase();
+       LoadLevelTape(level_nr);
 
-           game_status = PLAYING;
-           InitGame();
-         }
-       }
-       else
+       GetPlayerConfig();
+       LoadLevel(level_nr);
+
+       /*
+       if (autorecord_on)
+         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();
+
+       break;
+      }
+
+      case OP_MOVE_FIGURE:
+      {
+       int frame_nr;
+       int i;
+
+       frame_nr =
+         (buf[2] << 24) | (buf[3] << 16) | (buf[4] << 8) | (buf[5]);
+
+       if (frame_nr != FrameCounter)
        {
-         Error(ERR_RETURN, "no such level directory: '%s'", &buf[6]);
+         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");
        }
-       break;
 
-      case OP_MOVE:
-       if (buf[2])
+       for (i=0; i<MAX_PLAYERS; i++)
        {
-         printf("OP_MOVE: %d\n", buf[0]);
-         sprintf(msgbuf, "client %d moves player [0x%02x]", buf[0], buf[2]);
-         sysmsg(msgbuf);
+         if (stored_player[i].active)
+           network_player_action[i] = buf[6 + i];
        }
+
+       network_player_action_received = TRUE;
+
+       sprintf(msgbuf, "frame %d: client %d moves player [0x%02x]",
+               FrameCounter, buf[0], buf[2]);
+       sysmsg(msgbuf);
+
        break;
+      }
 
       case OP_PAUSE:
        printf("OP_PAUSE: %d\n", buf[0]);
@@ -509,7 +574,7 @@ void HandleNetworking()
   {
     int r;
 
-    r = read(sfd, readbuf + nread, BUFLEN - nread);
+    r = read(sfd, readbuf + nread, MAX_BUFFER_SIZE - nread);
 
     if (r < 0)
       fatal("Error reading from server");