PR #51 but updated, also PR #252

CodeWalker.Core/World/Space.cs

@@ -706,7 +706,6 @@ namespace CodeWalker.World
         {
             var xDir = Math.Min(1, Math.Max(-1, desiredX - ynd.CellX));
             var yDir = Math.Min(1, Math.Max(-1, desiredY - ynd.CellY));
-
             var x = desiredX;
             var y = desiredY;
 
@@ -718,11 +717,9 @@ namespace CodeWalker.World
                     {
                         break;
                     }
-
                     x += xDir;
                 }
             }
-
             if (yDir != 0)
             {
                 while (y >= 0 && y <= 31)
@@ -731,16 +728,61 @@ namespace CodeWalker.World
                     {
                         break;
                     }
-
                     y += yDir;
                 }
             }
 
+            var dx = x - ynd.CellX;
+            var dy = y - ynd.CellY;
+            var areaId = y * 32 + x;
+            var areaIdorig = ynd.AreaID;
+            var changed = ynd.AreaID != areaId;
             ynd.CellX = x;
             ynd.CellY = y;
-            var areaId = y * 32 + x;
             ynd.AreaID = areaId;
             ynd.Name = $"nodes{areaId}";
+            if (changed)
+            {
+                var nodes = ynd.Nodes;
+                if (nodes != null)
+                {
+                    for (int i = 0; i < nodes.Length; i++)
+                    {
+                        var node = nodes[i];
+                        node.SetPosition(node.Position + new Vector3(512 * dx, 512 * dy, 0));
+                        if (node.AreaID == areaIdorig)
+                        {
+                            node.AreaID = (ushort)areaId;
+                        }
+                    }
+                }
+                var links = ynd.Links;
+                if (links != null)
+                {
+                    for (int i = 0; i < links.Length; i++)
+                    {
+                        var link = links[i];
+                        if (link._RawData.AreaID == areaIdorig)
+                        {
+                            link._RawData.AreaID = (ushort)areaId;
+                        }
+                    }
+                }
+                var juncs = ynd.Junctions;
+                if (juncs != null)
+                {
+                    for (int i = 0; i < juncs.Length; i++)
+                    {
+                        var junc = juncs[i];
+                        junc.PositionX += (short)(512 * dx);
+                        junc.PositionY += (short)(512 * dy);
+                    }
+                }
+                ynd.UpdateAllNodePositions();
+                ynd.UpdateBoundingBox();
+                ynd.UpdateTriangleVertices(null);
+                ynd.BuildStructs();
+            }
             NodeGrid.UpdateYnd(ynd);
         }
 

CodeWalker/Project/Panels/EditYndPanel.cs

@@ -103,11 +103,12 @@ namespace CodeWalker.Project.Panels
             {
                 if (ProjectForm.WorldForm == null)
                 {
-                    MessageBox.Show("You can only do this while in full CodeWalker", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
+                    MessageBox.Show("You can only do this while the Project Window is open.", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
                     return;
                 }
 
                 ProjectForm.WorldForm.Space.MoveYndArea(Ynd, x, y);
+                ProjectForm.WorldForm.UpdatePathYndGraphics(Ynd, true);
                 ProjectForm.SetYndHasChanged(Ynd, true);
 
                 // Take the updated information