/// <summary>
/// Pathfinding function
/// </summary>
/// <param name="currentX">Fleet's Galaxy X</param>
/// <param name="currentY">Fleet's Galaxy Y</param>
/// <param name="currentDestination">Fleet's current destination for when empire don't have hyperspace communications</param>
/// <param name="newDestination">New destination</param>
/// <param name="hasExtended"></param>
/// <param name="whichEmpire">For fuel range and other info</param>
/// <returns></returns>
public List <TravelNode> GetPath(float currentX, float currentY, StarSystem currentDestination, StarSystem newDestination, bool hasExtended, Empire whichEmpire)
{
// TODO: When Hyperspace communication is implemented, add this
/*
* if (whichEmpire.HasHyperspaceCommunications())
* {
*
* }
* else
* {
* }
*/
// TODO: When adding stargates and wormholes, add actual pathfinding
List <TravelNode> nodes = new List <TravelNode>();
if (currentDestination != null)
{
TravelNode newNode = GenerateTravelNode(currentX, currentY, currentDestination);
newNode.IsValid = true;
nodes.Add(newNode);
newNode = GenerateTravelNode(currentDestination, newDestination);
newNode.IsValid = IsDestinationValid(newDestination, hasExtended, whichEmpire);
nodes.Add(newNode);
}
else
{
TravelNode newNode = GenerateTravelNode(currentX, currentY, newDestination);
newNode.IsValid = IsDestinationValid(newDestination, hasExtended, whichEmpire);
nodes.Add(newNode);
}
return(nodes);
}
public bool ConfirmPath()
{
if (_tentativeNodes != null)
{
foreach (var node in _tentativeNodes)
{
if (!node.IsValid)
{
return(false);
}
}
TravelNode[] nodes = new TravelNode[_tentativeNodes.Count];
_tentativeNodes.CopyTo(nodes);
_tentativeNodes = null;
_travelNodes = new List <TravelNode>(nodes);
}
else
{
//Null because target is either invalid or the system the fleet is currently adjacent
_travelNodes = null;
_tentativeNodes = null;
}
return(true);
}
public TravelNode GenerateTravelNode(float xPos, float yPos, StarSystem destination)
{
TravelNode newNode = new TravelNode();
newNode.StarSystem = destination;
float x = destination.X - xPos;
float y = destination.Y - yPos;
newNode.Length = (float)Math.Sqrt((x * x) + (y * y));
newNode.Angle = (float)(Math.Atan2(y, x) * (180 / Math.PI));
return newNode;
}
public TravelNode GenerateTravelNode(float xPos, float yPos, StarSystem destination)
{
TravelNode newNode = new TravelNode();
newNode.StarSystem = destination;
float x = destination.X - xPos;
float y = destination.Y - yPos;
newNode.Length = (float)Math.Sqrt((x * x) + (y * y));
newNode.Angle = (float)(Math.Atan2(y, x) * (180 / Math.PI));
return(newNode);
}
public bool ConfirmPath()
{
if (_tentativeNodes != null)
{
foreach (var node in _tentativeNodes)
{
if (!node.IsValid)
{
return false;
}
}
TravelNode[] nodes = new TravelNode[_tentativeNodes.Count];
_tentativeNodes.CopyTo(nodes);
_tentativeNodes = null;
_travelNodes = new List<TravelNode>(nodes);
}
else
{
//Null because target is either invalid or the system the fleet is currently adjacent
_travelNodes = null;
_tentativeNodes = null;
}
return true;
}
