[iFiras]

Here's my code:

First, we define the Grove Street team:

pawn Код:

#define TEAM_GROVE 0 //We define Grove Street team

Second, we create a function like "pTeam" so we can use it later to set the teams:

pawn Код:

new pTeam[MAX_PLAYERS];

Third, we use pTeam in some callback to set the player as Grove member. (For example: OnPlayerSpawn)

pawn Код:

public OnPlayerSpawn(playerid)
{
    pTeam[playerid] =TEAM_GROVE;
    return 1;
}

Then, we use OnPlayerText to detect if the player who types a Grove Street member:

pawn Код:

public OnPlayerText(playerid, text[])
{
    new string[256];
    if(pTeam[playerid] == TEAM_GROVE)
    {
        format(string,sizeof(string),"[GS] %s(%d): %s",PlayerName(playerid),playerid,text);
        SendClientMessageToAll(-1,string);
        /*NOTE: 
        1. %s - The player's name
        2. (%d) - The player's ID
        3. %s - The player's text (What the player types)*/
        //If the player's a Grove Street member then it will send a message to all players with the tag [GS]
        return 0;
    }
    return 1;
}

Use this stock for PlayerName: (In the bottom of your script)

pawn Код:

stock PlayerName(playerid)
{
  new name[255];
  GetPlayerName(playerid, name, 255);
  return name;
}