new RoadBlock[MAX_PLAYERS];
new RoadBlockObject[MAX_PLAYERS];

GetXYInFrontOfPlayer(playerid, &Float:x, &Float:y, Float:distance) // Add somewhere
{
    new Float:a;
    GetPlayerPos(playerid, x, y, a);
    GetPlayerFacingAngle(playerid, a);
    if (GetPlayerVehicleID(playerid))
    {
      GetVehicleZAngle(GetPlayerVehicleID(playerid), a);
    }
    x += (distance * floatsin(-a, degrees));
    y += (distance * floatcos(-a, degrees));
    return 1;
}

COMMAND:rb(playerid,params[])
{
    new vehicleid= GetPlayerVehicleID(playerid);
    if(!IsPlayerInVehicle(playerid, vehicleid))
    {
        if(RoadBlock[playerid] == 0)
        {
            new Float:X, Float:Y, Float:Z,Float:Angle;
            GetPlayerPos(playerid, X, Y, Z);
            GetPlayerFacingAngle(playerid, Angle);
            GetXYInFrontOfPlayer(playerid, X, Y, 1.5); // 1.5 Units in front of the player
            RoadBlockObject[playerid] = CreateObject(979, X, Y, Z-0.3, 0, 0, Angle);
            RoadBlock[playerid] = 1;
            SendClientMessage(playerid, COLOR_GREEN, "You placed the RoadBlock!");
        }
        else SendClientMessage(playerid, COLOR_RED, "ERROR: You already placed a RoadBlock!");
    }
    else SendClientMessage(playerid, COLOR_RED, "You can not place a RoadBlock while in a Vehicle!");
}

COMMAND:drb(playerid,params[])
{
    if(RoadBlock[playerid] == 0)
    {
        SendClientMessage(playerid, COLOR_RED, "You did not place a RoadBlock!");
        return 1;
    }
    RoadBlock[playerid] = 0;
    DestroyObject(RoadBlockObject[playerid]);
    SendClientMessage(playerid, COLOR_GREEN, "You removed the RoadBlock!");
    return 1;
}