[mick88]

Код:

public OnPlayerKeyStateChange(playerid, newkeys, oldkeys)
{
if ((newkeys & KEY_JUMP) && IsPlayerInRangeOfPoint(playerid, x, y ,z)) //insert your gate coordinates instead of x y z
	{
	    MoveObject(gateid, movex, movey, movez, 0.5) //put new gate coordinates instead of movex, movey...
	}
}

This code will open gate but it will not close it afterwards, you'd have to add timer that closes gate after few seconds