/// <summary>
/// Create a random IFR flight
/// </summary>
/// <param name="awyTableRef">The airway table to chose from</param>
/// <param name="acftNo">The aircraft regNo</param>
/// <param name="acftType">The aircraft type</param>
/// <param name="airline">The airline operator ICAO code</param>
/// <returns></returns>
public static CmdList GetRandomFlight(awyTable awyTableRef, int acftNo, string acftType, string airline)
{
var route = new CmdList( );
var visited = new List <string>( ); // visited Navs and Fixes, we don't want to run circles
var awy = GetRandomAwy(awyTableRef);
if (awy == null)
{
return(route); // no airways available ??
}
// add Aircraft Descriptor first
route.Enqueue(new CmdA(acftType, CmdA.FlightT.Airway, airline));
// some random altitude and complete start of the route
var altMsl = m_random.Next(MinLevel(awy.baseFt), MaxLevel(awy.topFt));
altMsl = (int)Math.Round(altMsl / 100.0) * 100; // get 100 ft increments
route.Descriptor.InitFromAirway(acftNo, awy, altMsl, GetSpeed(awy.layer)); // set start conditions (assumes MslBase=0)
// add segment length command
route.Enqueue(new CmdD(awy.Distance_nm));
visited.Add(awy.startID); // we add all startIDs
// do we have an airway to go from here?
var newleg = awyTableRef.GetNextSegment(awy);
while (newleg != null)
{
if (visited.Contains(newleg.startID))
{
break; // this would create a circle (endless loop)
}
awy = newleg;
// random speed change
if (m_random.Next(10) == 0) // one out of 10
// add S command
{
route.Enqueue(new CmdS(GetSpeed(awy.layer)));
}
// random alt change
if (m_random.Next(20) == 0) // one out of 20
// add V command
{
altMsl = GetNewAlt(altMsl, awy.baseFt, awy.topFt);
route.Enqueue(new CmdV(1200, altMsl));
}
// add Goto command
route.Enqueue(new CmdG(awy.end_latlon));
visited.Add(awy.startID); // we add all startIDs to avoid loops above
// try next one
newleg = awyTableRef.GetNextSegment(awy);
}
route.Descriptor.FinishFromAirway(awy); // set end location ID from last segment
// add mandatory end segment
route.Enqueue(new CmdE( ));
return(route);
}
// Get one airway as random selection or null
private static awyRec GetRandomAwy(awyTable awyTableRef)
{
if (awyTableRef.Count <= 0)
{
return(null); // no Awy in table
}
int item = m_random.Next(awyTableRef.Count);
return(awyTableRef.ElementAt(item).Value);
}
/// <summary>
/// cTor: init the database
/// </summary>
public awyDatabase()
{
m_db = new awyTable( );
}
