2D NavMeshAgent will not move straight up or down and other strange behavior

Hi all,

I'm trying to implement 2D click-to-move player movement with pathfinding from NavMeshPlus. At first, it seemed to work fairly well out of the box, but I'm now noticing that if I try to move directly up or down (along the Y axis, where X axis stays exactly the same), my character doesn't budge.

For context, the reason I'm running into this with click-based movement (which normally wouldn't produce an X diff of exactly 0), is that I'm converting the click position to the center of a grid cell to implement a sort of grid-based movement (might be a dumb idea, but that's what I was trying out at least.

Specifically, this seems to be true within a range of about 3.5 units along the Y axis. I say that because if I click further up or down the Y axis, the character seems to begin to move directly up or down and then stops about 3.5 units from wherever I clicked.

In writing this, I noticed something even stranger that makes me think I'm really doing something wrong - the thing about moving within 3.5 units is only true if I have my character object selected in the Hierarchy while playtesting - if I have another object selected, the character doesn't seem to move at all, or budges slightly (again, only if I'm moving directly along the Y axis, any other movement is fine), and then will move within the 3.5 units once I re-select my character object in the hierarchy. In fact, if I try to move along the Y axis and randomly click between objects in my hierarchy the character seems to budge slightly each time. I have no idea why clicking different objects in my hierarchy would have any effect on the play test itself - I'm brand new to Unity but I would have thought such a thing wouldn't even be possible.

My stripped down player controller code (I commented pretty much everything else out):

Code (CSharp):

1.  
2. void Start()
3.     {
4.         rigidbody2d = GetComponent<Rigidbody2D>();
5.         animator = GetComponent<Animator>();
6.         audioSource = GetComponent<AudioSource>();
7.         agent = GetComponent<NavMeshAgent>();
8.  
9.         agent.updateRotation = false;
10.         agent.updateUpAxis = false;
11.     }
12.  
13. void Update()
14.     {
15.         if(Input.GetMouseButtonDown(0))
16.         {
17.             // Gets coordinates of click, then coordinates of clicked cell, then center of clicked cell
18.             targetPosition = Camera.main.ScreenToWorldPoint(Input.mousePosition); // World coordinates of click
19.             Vector3Int cellPosition = grid.WorldToCell(targetPosition); // Cell coordinates of click ((4, 1) etc.)
20.             targetPositionGrid = grid.GetCellCenterWorld(cellPosition); // Coordinates of center of cell ((4.5, 1.5) if cellPosition is (4, 1))
21.             agent.SetDestination(targetPositionGrid);
22.     }
23.  

 

Just ran into exactly this, did you manage to fix it ?