[Threshold]

Try something along these lines:

pawn Код:

//At the top of your script
new TextDrawShowing[MAX_PLAYERS]; //You can make this a bool if you want, to make it easier to understand.

public OnPlayerConnect(playerid)
{
    TextDrawShowing[playerid] = 0; //Or 'False' if you're using a boolean value.
    return 1;
}

public OnPlayerGiveDamage(playerid, damagedid, Float:amount, weaponid)
{
    //ShowTextDraw to player etc.
    if(TextDrawShowing[damagedid] == 1) //if the textdraw is already showing
    {
        KillTimer(TextTimer[damagedid]); //Kill timer so the textdraw still displays 2 seconds after being hit
    }
    TextDrawShowing[damagedid] = 1;
    SetTimerEx("RemoveTDBar", 2000, false,"i",damagedid);
    return 1;
}

forward RemoveTDBar(playerid);
public RemoveTDBar(playerid)
{
    //Hide textdraw from player
    TextDrawShowing[playerid] = 0; //The textdraw is no longer showing
    return 1;
}