Howdy,
Long story short, the project involves 3D movement on non-euclidean geometry, stuff like tiny planets with significant geographical features. The first iteration of pathfinding involved a Navmesh Graph and a collection of object pairs + NodeLink2 automatically generated by my jump mesh system, so far so good, however, since GraphUpdateScene isn’t non-euclidean friendly and I need tagged areas, I proceded to write a custom graph generator (WIP) that converted a custom Navmesh into a Point Graph with custom connections, that part works as intended, but when I try to incorporate the NodeLinks something isn’t working.
On the first scan I get these error logs:
There was an error generating the graphs:
System.NullReferenceException: Object reference not set to an instance of an object
at Pathfinding.PointNode.AddConnection (Pathfinding.GraphNode node, System.UInt32 cost) [0x000b1] in –/Assets/AstarPathfindingProject/Generators/NodeClasses/PointNode.cs:142
at Pathfinding.NodeLink2.Apply (System.Boolean forceNewCheck) [0x000a8] in –/Assets/AstarPathfindingProject/Core/Misc/NodeLink2.cs:196
at Pathfinding.NodeLink2.InternalOnPostScan () [0x0016a] in –/Assets/AstarPathfindingProject/Core/Misc/NodeLink2.cs:112
at Pathfinding.NodeLink2.OnPostScan () [0x00000] in –/Assets/AstarPathfindingProject/Core/Misc/NodeLink2.cs:72
at Pathfinding.GraphModifier.TriggerEvent (Pathfinding.GraphModifier+EventType type) [0x00058] in –/Assets/AstarPathfindingProject/Core/Misc/GraphModifier.cs:71
at AstarPath+<ScanAsync>d__141.MoveNext () [0x002e6] in –/Assets/AstarPathfindingProject/Core/AstarPath.cs:1755
at Pathfinding.AstarPathEditor.MenuScan () [0x000bc] in –/Assets/AstarPathfindingProject/Editor/AstarPathEditor.cs:1442
If you think this is a bug, please contact me on forum.arongranberg.com (post a new thread)
And of course the accompanying " NullReferenceException: Object reference not set to an instance of an object
"
If I try to scan again, even if I remove the graphs or disable the jump mesh objects I get:
There was an error generating the graphs:
System.InvalidOperationException: Another async scan is already running
at AstarPath+<ScanAsync>d__141.MoveNext () [0x003f8] in –/Assets/AstarPathfindingProject/Core/AstarPath.cs:1791
at Pathfinding.AstarPathEditor.MenuScan () [0x000bc] in –/Assets/AstarPathfindingProject/Editor/AstarPathEditor.cs:1442
If you think this is a bug, please contact me on forum.arongranberg.com (post a new thread)
and
InvalidOperationException: Another async scan is already running
Then the Pathfinder component becomes useless, I’ll get the second errors even if I remove the graph used for node links and disable the objects, I need to remove the Pathfinder component and add a new one to be able to perform a scan again.
I can avoid these errors and apparently make a successful scan if I change the inheritance of my custom generator from NavGraph to PointGraph, the gizmos look fine and the connections are correct but then AstarPath is unable to find the closest node and generate a path:
Path Failed : Computation Time 0.00 ms Searched Nodes 0
Error: Couldnt find a node close to the start point
Path Number 7 (unique id)
UnityEngine.Debug:LogWarning (object)
AstarPath:LogPathResults (Pathfinding.Path) (at Assets/AstarPathfindingProject/Core/AstarPath.cs:835)
AstarPath:<InitializePathProcessor>b__122_1 (Pathfinding.Path) (at Assets/AstarPathfindingProject/Core/AstarPath.cs:1301)
Pathfinding.PathProcessor:CalculatePathsThreaded (Pathfinding.PathHandler) (at Assets/AstarPathfindingProject/Core/Misc/PathProcessor.cs:379)
Pathfinding.PathProcessor/<>c__DisplayClass24_0:<.ctor>b__0 () (at Assets/AstarPathfindingProject/Core/Misc/PathProcessor.cs:110)
System.Threading.ThreadHelper:ThreadStart ()
Please help me get out of this either/or pathfinding mess.