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Picking up object sometimes blocked by other objects/parts of other objects

Discussion in 'Scripting' started by egg_citizen, Jul 27, 2019.

  1. egg_citizen


    Jan 3, 2019
    Hello all,

    Somehow my code works at times and sometimes doesn't work at times... and I don't see where it goes wrong.
    I have an object which I can drag.(lets call it object A) It's the only object on the screen which I can drag. Then there are other objects where I can hide the object behind. After hiding it (even totally out of sight), I can still pick up the object, which is how it should work... but... sometimes that same object I hide it behind (object B), makes me unable to pick up object A... and I just can't find the logic behind this :(.

    To be complete, Object A and Object B both have boxColliders (2D).
    Object A: Inspecter Layer: Default
    Object B: Inspecter Layer: Scenery

    Object A: Sprite Renderer Layer + Order: Sprite Renderer same as Object B, Order = Object B order - 1

    The only code in the scene right now:

    Code (CSharp):
    1. using UnityEngine;
    3. namespace HideSeek.Control
    4. {
    5.     public class HideObjectControl : MonoBehaviour
    6.     {
    7.         private Vector2 offSet;
    9. // pick up object A
    10.         private void OnMouseDown()
    11.         {
    12.             offSet = gameObject.transform.position - Camera.main.ScreenToWorldPoint(new Vector2(Input.mousePosition.x, Input.mousePosition.y));
    13.             Debug.Log("Picking ball up");
    14.         }
    16. // change position object A while dragging it
    17.         private void OnMouseDrag()
    18.         {
    19.             Vector2 curScreenPoint = new Vector2(Input.mousePosition.x, Input.mousePosition.y);
    20.             Vector2 curPosition = (Vector2)Camera.main.ScreenToWorldPoint(curScreenPoint) + offSet;
    21.             transform.position = curPosition;
    22.         }
    24. //release object A when mouse not clicked anymore
    25.         private void OnMouseUp()
    26.         {
    27.             RaycastHit2D hit2D = Physics2D.Raycast(Camera.main.ScreenToWorldPoint(Input.mousePosition),,0,LayerMask.GetMask("Scenery"));
    28.             if (hit2D)
    29.             {
    30.                 GameObject hitObject = hit2D.collider.gameObject;
    32. // Set sortinglayer and order for object A
    33.                 gameObject.GetComponent<SpriteRenderer>().sortingLayerID = hitObject.GetComponent<SpriteRenderer>().sortingLayerID;
    34.                 gameObject.GetComponent<SpriteRenderer>().sortingOrder = hitObject.GetComponent<SpriteRenderer>().sortingOrder - 1;
    36.             }
    37.         }
    38.     }
    39. }
    This code is part of Object A.
    Object B has no code.

    The Transform.Z position of all the objects = 0, also after dragging and dropping object A.