Misc fixes, and added GetDebugInfo() which was missed.

Source/Game/Movement/Generators/FlightPathMovementGenerator.cs

@@ -81,6 +81,8 @@ namespace Game.Movement
                 bool departureEvent = true;
                 do
                 {
+                    Cypher.Assert(_currentNode < _path.Count, $"Point Id: {pointId}\n{owner.GetDebugInfo()}");
+
                     DoEventIfAny(owner, _path[_currentNode], departureEvent);
                     while (!_pointsForPathSwitch.Empty() && _pointsForPathSwitch[0].PathIndex <= _currentNode)
                     {
@@ -226,6 +228,8 @@ namespace Game.Movement
 
         void DoEventIfAny(Player owner, TaxiPathNodeRecord node, bool departure)
         {
+            Cypher.Assert(node != null, owner.GetDebugInfo());
+
             uint eventid = departure ? node.DepartureEventID : node.ArrivalEventID;
             if (eventid != 0)
             {
@@ -263,6 +267,20 @@ namespace Game.Movement
                 Log.outDebug(LogFilter.Server, "FlightPathMovementGenerator::PreloadEndGrid: Unable to determine map to preload flightmaster grid");
         }
 
+        uint GetPathId(int index)
+        {
+            if (index >= _path.Count)
+                return 0;
+
+            return _path[index].PathID;
+        }
+        
+        public override string GetDebugInfo()
+        {
+            return $"Current Node: {GetCurrentNode()}\n{base.GetDebugInfo()}\nStart Path Id: {GetPathId(0)} Path Size: {_path.Count} HasArrived: {HasArrived()} End Grid X: {_endGridX} " +
+                $"End Grid Y: {_endGridY} End Map Id: {_endMapId} Preloaded Target Node: {_preloadTargetNode}";
+        }
+        
         public override bool GetResetPosition(Unit u, out float x, out float y, out float z)
         {
             var node = _path[_currentNode];

Source/Game/Movement/Generators/MovementGenerators.cs

@@ -76,8 +76,13 @@ namespace Game.Movement
         {
             return obj.Mode.GetHashCode() ^ obj.Priority.GetHashCode();
         }
-    }
 
+        public virtual string GetDebugInfo()
+        {
+            return $"Mode: {Mode} Priority: {Priority} Flags: {Flags} BaseUniteState: {BaseUnitState}";
+        }
+    }
+    
     public abstract class MovementGeneratorMedium<T> : MovementGenerator where T : Unit
     {
         public override void Initialize(Unit owner)

Source/Game/Movement/Generators/PathGenerator.cs

@@ -384,7 +384,7 @@ namespace Game.Movement
                     // this is probably an error state, but we'll leave it
                     // and hopefully recover on the next Update
                     // we still need to copy our preffix
-                    Log.outError(LogFilter.Maps, "{0}'s Path Build failed: 0 length path", _sourceUnit.GetGUID().ToString());
+                    Log.outError(LogFilter.Maps, $"Path Build failed\n{_sourceUnit.GetDebugInfo()}");
                 }
 
                 Log.outDebug(LogFilter.Maps, "m_polyLength={0} prefixPolyLength={1} suffixPolyLength={2} \n", _polyLength, prefixPolyLength, suffixPolyLength);
@@ -709,7 +709,7 @@ namespace Game.Movement
                 npolys = FixupCorridor(polys, npolys, 74, visited, nvisited);
 
                 if (Detour.dtStatusFailed(_navMeshQuery.getPolyHeight(polys[0], result, ref result[1])))
-                    Log.outDebug(LogFilter.Maps, $"Cannot find height at position X: {result[2]} Y: {result[0]} Z: {result[1]} for ");// {_sourceUnit.GetDebugInfo()}");
+                    Log.outDebug(LogFilter.Maps, $"Cannot find height at position X: {result[2]} Y: {result[0]} Z: {result[1]} for {_sourceUnit.GetDebugInfo()}");
 
                 result[1] += 0.5f;
                 Detour.dtVcopy(iterPos, result);

Source/Game/Movement/Generators/WaypointMovement.cs

@@ -397,6 +397,11 @@ namespace Game.Movement
             return true;
         }
 
+        public override string GetDebugInfo()
+        {
+            return $"Current Node: {_currentNode}\n{base.GetDebugInfo()}";
+        }
+        
         bool UpdateTimer(uint diff)
         {
             _nextMoveTime.Update((int)diff);