[Ballu Miaa]

Posting both the methods below. To use this command you will need ZCMD by Zeek and sscanf by ******.
EDIT:

The SendClientMessage one!

pawn Код:

COMMAND:announce(playerid, params[])
    {
        new string[128],msg[128],pname[MAX_PLAYER_NAME];
        GetPlayerName(playerid,pname,sizeof(pname));
        if(sscanf(params,"s[128]",msg)) return SendClientMessage(playerid,-1, "USAGE: /ann [Admin Message]");
        if(!IsPlayerAdmin(playerid)) return SendClientMessage(playerid,-1, "You are not authorised to use this command!");
        format(string,sizeof(string),"* [Admin] : %s %s *",pname,msg);
        SendClientMessageToAll(-1,string);
        return 1;
    }

Game Text one!

pawn Код:

COMMAND:announce(playerid, params[])
    {
        new string[128],msg[128],pname[MAX_PLAYER_NAME];
        GetPlayerName(playerid,pname,sizeof(pname));
        if(sscanf(params,"s[128]",msg)) return SendClientMessage(playerid,-1, "USAGE: /ann [Admin Message]");
        if(!IsPlayerAdmin(playerid)) return SendClientMessage(playerid,-1, "You are not authorised to use this command!");
        format(string,sizeof(string),"[%s]: %s",pname,msg);
        GameTextForPlayer( playerid, string, 5000, 3 );
        return 1;
    }