A basic C# library for pathfinding
This is a set pathfinding algorithms developed to used against points joined together as "roads". Demonstration program included.
RouteFinder rf = new RouteFinder();
// Add roads - the values are x, y pairs for the start and end points
rf.AddRoad(0, 0, 0, 5);
rf.AddRoad(0, 0, 3, 0);
rf.AddRoad(3, 0, 4, 3);
rf.AddRoad(4, 3, 2, 1);
// Set the start and destination points
rf.StartX = 0;
rf.StartY = 0;
rf.DestinationX = 2;
rf.DestinationY = 1;
// Set one of three methods
rf.Method = FinderMethod.AStar; // Properly implemented A* (preferred)
rf.Method = FinderMethod.AStarImperfect; // Badly implemented A*, with some bugs, but works in most cases
rf.Method = FinderMethod.Dijkstra; // Dijkstra algorithm (least efficient)
// Start pathfinder
rf.Go();
// Check results
if (rf.Journeys.Count == 0)
{
// Should have at least one journey, depending on method used
MessageBox.Show("Unable to complete route");
}
else
{
// Return the shortest journey
// For A*, this will be the only journey in the list
Journey j = rf.Shortest();
// Returns the total distance of the journey
int distance = j.Distance();
// Returns the list of roads (including start and end points) in order
List<Roads> r = j.Roads;
}
Copyright (c) 2021 Paul Turner
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