[CuervO]

Add at the top where you have all your variables

pawn Код:

new gate;

Add to ongamemodeinit

pawn Код:

gate = 1;

Command

pawn Код:

if (strcmp(cmdtext, "/gate", true)==0)
{
    if(IsPlayerInRangeOfPoint(playerid,20,782.09,-1384.78,12.75))
    {
        if(gate == 0)
        {
            MoveObject(gate,773.91998291016, -1384.759765625, 12.704795837402, 3.0);
            SendClientMessage(playerid, COLOR_YELLOW, "Gate has opened");
            gate = 1;
        }
        else
        {
            MoveObject(gate,782.34002685547, -1384.7600097656, 12.704795837402, 3.0)
            SendClientMessage(playerid, COLOR_YELLOW, "Gates have closed");
            gate = 0;
        }
    }
    return 1;
}

You must have a check to see if the gate is open or closed.