remove Tuple<RcVec3f, RcVec3f> in GetOffMeshConnectionPolyEndPoints

src/DotRecast.Detour.Crowd/DtPathCorridor.cs

@@ -364,7 +364,7 @@ namespace DotRecast.Detour.Crowd
             return false;
         }
 
-        public bool MoveOverOffmeshConnection(long offMeshConRef, long[] refs, ref RcVec3f start, ref RcVec3f end, DtNavMeshQuery navquery)
+        public bool MoveOverOffmeshConnection(long offMeshConRef, long[] refs, ref RcVec3f startPos, ref RcVec3f endPos, DtNavMeshQuery navquery)
         {
             // Advance the path up to and over the off-mesh connection.
             long prevRef = 0, polyRef = m_path[0];
@@ -388,12 +388,10 @@ namespace DotRecast.Detour.Crowd
             refs[1] = polyRef;
 
             DtNavMesh nav = navquery.GetAttachedNavMesh();
-            var startEnd = nav.GetOffMeshConnectionPolyEndPoints(refs[0], refs[1]);
+            var startEnd = nav.GetOffMeshConnectionPolyEndPoints(refs[0], refs[1],  ref startPos, ref endPos);
             if (startEnd.Succeeded())
             {
-                m_pos = startEnd.result.Item2;
+                m_pos = endPos;
-                start = startEnd.result.Item1;
-                end = startEnd.result.Item2;
                 return true;
             }
 

src/DotRecast.Detour/DtNavMesh.cs

@@ -1497,39 +1497,43 @@ namespace DotRecast.Detour
             return (int)(n & mask);
         }
 
+        /// Gets the endpoints for an off-mesh connection, ordered by "direction of travel".
+        ///  @param[in]		prevRef		The reference of the polygon before the connection.
+        ///  @param[in]		polyRef		The reference of the off-mesh connection polygon.
+        ///  @param[out]	startPos	The start position of the off-mesh connection. [(x, y, z)]
+        ///  @param[out]	endPos		The end position of the off-mesh connection. [(x, y, z)]
+        /// @return The status flags for the operation.
+        /// 
         /// @par
         ///
-        /// Off-mesh connections are stored in the navigation mesh as special
+        /// Off-mesh connections are stored in the navigation mesh as special 2-vertex 
-        /// 2-vertex
+        /// polygons with a single edge. At least one of the vertices is expected to be 
-        /// polygons with a single edge. At least one of the vertices is expected to
-        /// be
         /// inside a normal polygon. So an off-mesh connection is "entered" from a 
-        /// normal polygon at one of its endpoints. This is the polygon identified
+        /// normal polygon at one of its endpoints. This is the polygon identified by 
-        /// by
         /// the prevRef parameter.
-        public Result<Tuple<RcVec3f, RcVec3f>> GetOffMeshConnectionPolyEndPoints(long prevRef, long polyRef)
+        public DtStatus GetOffMeshConnectionPolyEndPoints(long prevRef, long polyRef, ref RcVec3f startPos, ref RcVec3f endPos)
         {
             if (polyRef == 0)
             {
-                return Results.InvalidParam<Tuple<RcVec3f, RcVec3f>>("polyRef = 0");
+                return DtStatus.DT_FAILURE;
             }
 
             // Get current polygon
             DecodePolyId(polyRef, out var salt, out var it, out var ip);
             if (it >= m_maxTiles)
             {
-                return Results.InvalidParam<Tuple<RcVec3f, RcVec3f>>("Invalid tile ID > max tiles");
+                return DtStatus.DT_FAILURE | DtStatus.DT_INVALID_PARAM;
             }
 
             if (m_tiles[it].salt != salt || m_tiles[it].data.header == null)
             {
-                return Results.InvalidParam<Tuple<RcVec3f, RcVec3f>>("Invalid salt or missing tile header");
+                return DtStatus.DT_FAILURE | DtStatus.DT_INVALID_PARAM;
             }
 
             DtMeshTile tile = m_tiles[it];
             if (ip >= tile.data.header.polyCount)
             {
-                return Results.InvalidParam<Tuple<RcVec3f, RcVec3f>>("Invalid poly ID > poly count");
+                return DtStatus.DT_FAILURE | DtStatus.DT_INVALID_PARAM;
             }
 
             DtPoly poly = tile.data.polys[ip];
@@ -1537,7 +1541,7 @@ namespace DotRecast.Detour
             // Make sure that the current poly is indeed off-mesh link.
             if (poly.GetPolyType() != DtPoly.DT_POLYTYPE_OFFMESH_CONNECTION)
             {
-                return Results.InvalidParam<Tuple<RcVec3f, RcVec3f>>("Invalid poly type");
+                return DtStatus.DT_FAILURE;
             }
 
             // Figure out which way to hand out the vertices.
@@ -1558,11 +1562,10 @@ namespace DotRecast.Detour
                 }
             }
 
-            RcVec3f startPos = new RcVec3f();
+            startPos = RcVec3f.Of(tile.data.verts, poly.verts[idx0] * 3);
-            RcVec3f endPos = new RcVec3f();
+            endPos = RcVec3f.Of(tile.data.verts, poly.verts[idx1] * 3);
-            startPos.Set(tile.data.verts, poly.verts[idx0] * 3);
+            
-            endPos.Set(tile.data.verts, poly.verts[idx1] * 3);
+            return DtStatus.DT_SUCCSESS;
-            return Results.Success(Tuple.Create(startPos, endPos));
         }
 
         public int GetMaxVertsPerPoly()

src/DotRecast.Recast.Demo/Tools/TestNavmeshTool.cs

@@ -275,6 +275,9 @@ public class TestNavmeshTool : IRcTool
                         else if (offMeshConnection && PathUtils.InRange(iterPos, steerTarget.steerPos, SLOP, 1.0f))
                         {
                             // Reached off-mesh connection.
+                            RcVec3f startPos = RcVec3f.Zero;
+                            RcVec3f endPos = RcVec3f.Zero;
+                            
                             // Advance the path up to and over the off-mesh connection.
                             long prevRef = 0;
                             long polyRef = polys[0];
@@ -289,11 +292,9 @@ public class TestNavmeshTool : IRcTool
                             polys = polys.GetRange(npos, polys.Count - npos);
 
                             // Handle the connection.
-                            var offMeshCon = m_navMesh.GetOffMeshConnectionPolyEndPoints(prevRef, polyRef);
+                            var status2 = m_navMesh.GetOffMeshConnectionPolyEndPoints(prevRef, polyRef, ref startPos, ref endPos);
-                            if (offMeshCon.Succeeded())
+                            if (status2.Succeeded())
                             {
-                                var startPos = offMeshCon.result.Item1;
-                                var endPos = offMeshCon.result.Item2;
                                 if (m_smoothPath.Count < MAX_SMOOTH)
                                 {
                                     m_smoothPath.Add(startPos);