private static void CallbackExample()
{
Console.WriteLine(nameof(CallbackExample));
//Setup the nodegrid and pathfinder.
var pathfindaxManager = new PathfindaxManager();
var nodeNetwork = new DefinitionNodeGrid(GenerateNodeGridConnections.All, 3, 3, new Vector2(1, 1));
var pathfinder = pathfindaxManager.CreateAstarPathfinder(nodeNetwork);
//Request a path.
var pathRequest = pathfinder.RequestPath(nodeNetwork.NodeGrid[0, 0], nodeNetwork.NodeGrid[2, 0]);
Console.WriteLine($"Solving path from {pathRequest.PathStart.Position} to {pathRequest.PathEnd.Position}...");
//Add a callback to the request that will be called then the pathfinder is done.
var callbackCalled = false;
pathRequest.AddCallback(request =>
{
Console.WriteLine($"Solved path! {request.CompletedPath}");
callbackCalled = true;
});
//Start calling update on the manager. Update will call the callbacks of any completed paths. Note that the callback is called from the thread that calls update.
//Normally when using pathfindax in a game engine you would wire this up in your game loop.
while (!callbackCalled)
{
pathfindaxManager.Update(1f);
}
Console.WriteLine($"{nameof(CallbackExample)} completed. Press any key to continue with the next example.");
Console.ReadKey();
}
public void Integration_AddCallbackBeforePathIsSolved_CallbackIsCalled()
{
var manager = new PathfindaxManager(new UpdatableSynchronizationContext());
var pathfinder = PathfinderSetup.Create(manager, 1);
pathfinder.Start();
var request = PathRequest.Create <IPath>(-1, -1);
var done = false;
request.AddCallback(x => done = true);
pathfinder.RequestPath(request);
request.WaitHandle.WaitOne(1000);
manager.Update(1f); //This should call the callback if the path is finished.
Assert.AreEqual(true, done);
}
protected override void OnBeforeUpdate()
{
base.OnBeforeUpdate();
_pathfindaxManager.Update(Time.LastDelta);
}
