'Grid' movement relative to Camera orbit

I'm trying to move a cursor gameObject around a plane using the WASD keys. I suspect I'm closing in on the method, but it messes up at certain camera angles.

Code (CSharp):

1. var oldMoveTo = moveTo;
2. Vector3 moveDir = new Vector3(0,0,0);
3.  
4. if (Input.GetAxis("Vertical") > 0f) { moveDir = Camera.main.transform.forward; }
5. if (Input.GetAxis("Vertical") < 0f) { moveDir = -Camera.main.transform.forward; }
6. if (Input.GetAxis("Horizontal") < 0f) { moveDir = -Camera.main.transform.right; }
7. if (Input.GetAxis("Horizontal") > 0f) { moveDir = Camera.main.transform.right; }
8.  
9. // this method to 'snap' it to a grid
10. if (moveDir.x < -0.3f) { moveTo.x = moveTo.x - 1; }
11. if (moveDir.x > 0.3f) { moveTo.x = moveTo.x + 1; }
12. if (moveDir.z < -0.3f) { moveTo.z = moveTo.z + 1; }
13. if (moveDir.z > 0.3f) { moveTo.z = moveTo.z - 1; }
14.  
15. if (moveTo != oldMoveTo) {
16.     transform.position = Vector3.MoveTowards(transform.position, moveTo, 0.2f);
17.     }

Can anyone tell me what I'm doing wrong? Thanks

 

So it was just an error in line 12 and 13. All sorted... thread can be nuked