[Jarnu]

for isnull params

pawn Код:

#if !defined isnull
    #define isnull(%1) \
                ((!(%1[0])) || (((%1[0]) == '\1') && (!(%1[1]))))
#endif

The Command.

pawn Код:

dcmd_changename(playerid, params[])
{
        if(PlayerInfo[playerid][LoggedIn] == 1) {
        if(isnull(params)) return SendClientMessage(playerid, red, "USAGE: /changename [new Name]");
        if(strlen(params) < 4) return SendClientMessage(playerid,red,"ACCOUNT: Incorrect password length");
        if (udb_Exists(params)) return SendClientMessage(playerid,red,"This User Name Is Taken!");
        new nameee[24];  GetPlayerName(playerid, nameee, 16);
        new OldName[24],str[128];
        GetPlayerName(playerid,OldName,sizeof(OldName));
        format(str,sizeof(str),"LuxAdmin/Users/%s.sav",OldName);
        udb_RenameUser(OldName,params);
        format(str,sizeof(str),"LuxAdmin/Users/%s.sav",params);
        SetPlayerName(playerid,params);
        PlayerPlaySound(playerid,1057,0.0,0.0,0.0);
        new string[128];
        format(string, sizeof(string),"ACCOUNT: You have successfully changed your Name to \"%s\"",params);
        return SendClientMessage(playerid,yellow,string);
    } else return SendClientMessage(playerid,red, "ERROR: You must have an account to use this command");
}

++REP if it worked.

-Regards,
Jarnu