public OnPlayerConnect(playerid)
{
     new msg[128], name[MAX_PLAYER_NAME];
     GetPlayerName(playerid, name, MAX_PLAYER_NAME);
     format(msg, 128, "%s has join 'Your Server Name'", name);
     SendClientMessageToAll(-1, msg);
     return 1;
}

public OnPlayerDisconnect(playerid, reason)
{
     new msg[128], name[MAX_PLAYER_NAME];
     GetPlayerName(playerid, name, MAX_PLAYER_NAME);
     switch(reason)
     {
           case 0: format(msg, 128, "%s has left 'Your Server Name' (Timedout/Crash)", name);
           case 1: format(msg, 128, "%s has left 'Your Server Name' (Left)", name);
           case 2: format(msg, 128. "%s has left 'Your Server Name' (Kicked/Banned)", name);
     }
     SendClientMessageToAll(0xAFAFAFAA,msg);
     return 1;
}

public OnPlayerDeath(playerid, killerid, reason)
{
     if(killerid != INVALID_PLAYER_ID)
     {
          SetPlayerWantedLevel(playerid, GetPlayerWantedLevel(playerid) + 1);
     }
     return 1;
}