[HP]

I haven't tested it out, but it should work.

pawn Код:

public OnPlayerCommandText(playerid, cmdtext[])
{
    if (strcmp("/afk", cmdtext, true, 10) == 0) {
        new
            prevname[MAX_PLAYER_NAME],
            name[MAX_PLAYER_NAME],
            string[44],
            ;
        if (afk[playerid] == 0) {
            new Float:xi = 2261.4995;
            new Float:yi = 1398.8009;
            new Float:zi = 30.1234;

            GetPlayerPos(playerid, x, y, z);
            muted[playerid] = 1;
            SetPlayerHealth(playerid, 100000000000);
            GetPlayerName(playerid, name, sizeof(name));
            format(string, sizeof(string), "%s is AFK.",name);
            SendClientMessageToAll(0xFFFF00AA, string);
            prevname = name;
            format(string, sizeof(string), "[AFK]%s", name);
            SetPlayerName(playerid, string);
            afk[playerid] = 1;
            SetPlayerPos(playerid, 2261.4995, 1398.8009, 30.1234);
            cage = CreateObject(985, xi, yi+4, zi, 0.0, 0.0, 0.0);
            cage2 = CreateObject(985, xi+4, yi, zi, 0.0, 0.0, 90.0);
            cage3 = CreateObject(985, xi-4, yi, zi, 0.0, 0.0, 270.0);
            cage4 = CreateObject(985, xi, yi-4, zi, 0.0, 0.0, 180.0);
        }
        else if (afk[playerid] == 1) {
            SetPlayerHealth(playerid, 100);
            GetPlayerName(playerid, name, sizeof(name));
            format(string, sizeof(string), "%s is BACK.",name);
            SendClientMessageToAll(0xFFFF00AA, string);
            SetPlayerName(playerid, prevname);
            afk[playerid] = 0;
            SetPlayerPos(playerid, x, y, z);
            DestroyObject(cage);
            DestroyObject(cage1);
            DestroyObject(cage2);
            DestroyObject(cage3);
            DestroyObject(cage4);
            muted[playerid] = 0;
        }
        return 1;
    }
    return 0;
}

Basically, what it does is, that it get's player name, saves it as "prevname" (short from previous name) and sets player name to "[AFK](and string for GetPlayerName here)" after the player re-enter's the command it sets player's name back to what it was before (prevname).

I also made it to a single command, but you can always make it back to 2 commands. I also modified it a bit from here and there, to make it look better.