[SOLVED] Unity offscreen target indicator - little problem

UNITY 2D C#

Hi everyone.
I have a script that allows the arrow to show where the point is .

I have two problems:

1) I would like to get arrow much closer to the edge of the camera, because now it is too far (how you can see on picture);

2) I would like the arrow to show the way to a point with a specific tag or name.

How to do it?

Could anyone help me transform the script?

PS. Project for android, screen 854x480.

My script:

Code (CSharp):

1. using System.Collections;
2. using System.Collections.Generic;
3. using UnityEngine;
4. using CodeMonkey.Utils;
5.  
6.  
7. public class Window_QuestPointer : MonoBehaviour {
8.  
9.     [SerializeField] private Camera uiCamera;
10.  
11.  
12.  
13.     private Vector3 targetPosition;
14.     private RectTransform pointerRectTransform;
15.  
16.     private void Awake ()
17.     {
18.         targetPosition = new Vector3 (50, 0);
19.         pointerRectTransform = transform.Find ("Pointer").GetComponent<RectTransform> ();
20.     }
21.     private void Update (){
22.         Vector3 toPosition = targetPosition;
23.         Vector3 fromPosition = Camera.main.transform.position;
24.         fromPosition.z = 0f;
25.         Vector3 dir = (toPosition - fromPosition).normalized;
26.         float angle = UtilsClass.GetAngleFromVectorFloat(dir);
27.         pointerRectTransform.localEulerAngles = new Vector3 (0, 0, angle);
28.  
29.         float borderSize = 100f;
30.    
31.         Vector3 targetPositionScreenPoint = Camera.main.WorldToScreenPoint (targetPosition);
32.         bool isOffscreen = targetPositionScreenPoint.x <= borderSize || targetPositionScreenPoint.x >= Screen.width - borderSize || targetPositionScreenPoint.y <= borderSize || targetPositionScreenPoint.y >= Screen.height - borderSize;
33.         Debug.Log (isOffscreen + " " + targetPositionScreenPoint);
34.  
35.         if(isOffscreen){
36.             Vector3 cappedTargetScreenPosition = targetPositionScreenPoint;
37.             cappedTargetScreenPosition.x = Mathf.Clamp (cappedTargetScreenPosition.x, borderSize, Screen.width - borderSize);
38.             cappedTargetScreenPosition.y = Mathf.Clamp (cappedTargetScreenPosition.y, borderSize, Screen.height - borderSize);
39.  
40.             Vector3 pointerWorldPosition = uiCamera.ScreenToWorldPoint (cappedTargetScreenPosition);
41.             pointerRectTransform.position = pointerWorldPosition;
42.             pointerRectTransform.localPosition = new Vector3 (pointerRectTransform.localPosition.x, pointerRectTransform.localPosition.y, 0f);
43.  
44.         }
45.         else{
46.             Vector3 pointerWorldPosition = uiCamera.ScreenToWorldPoint (targetPositionScreenPoint);
47.             pointerRectTransform.position = pointerWorldPosition;
48.             pointerRectTransform.localPosition = new Vector3 (pointerRectTransform.localPosition.x, pointerRectTransform.localPosition.y, 0f);
49.  
50.     }
51. }
52. }
53.            

 

I think you need to lower this 100f to achieve your goal. (I may be wrong, I haven't run this script in Unity)

 

OK you're right.

So far, I have been increasing the number, so the arrow has disappeared from the screen.

Now it work well

But the second problem remains:

How to make an arrow point to an object with a specific tag?

 

Solved:

Code (CSharp):

1. using System.Collections;
2. using System.Collections.Generic;
3. using UnityEngine;
4. using CodeMonkey.Utils;
5.  
6.  
7. public class Window_QuestPointer : MonoBehaviour {
8.  
9.     [SerializeField] private Camera uiCamera;
10.  
11.  
12.  
13.     private Vector3 targetPosition;
14.     private RectTransform pointerRectTransform;
15.  
16.     private void Awake ()
17.     {
18.         targetPosition = GameObject.FindWithTag("Star").transform.position;
19.         pointerRectTransform = transform.Find ("Pointer").GetComponent<RectTransform> ();
20.     }
21.     private void Update (){
22.         Vector3 toPosition = targetPosition;
23.         Vector3 fromPosition = Camera.main.transform.position;
24.         fromPosition.z = 0f;
25.         Vector3 dir = (toPosition - fromPosition).normalized;
26.         float angle = UtilsClass.GetAngleFromVectorFloat(dir);
27.         pointerRectTransform.localEulerAngles = new Vector3 (0, 0, angle);
28.  
29.         float borderSize = 40f;
30.    
31.         Vector3 targetPositionScreenPoint = Camera.main.WorldToScreenPoint (targetPosition);
32.         bool isOffscreen = targetPositionScreenPoint.x <= borderSize || targetPositionScreenPoint.x >= Screen.width - borderSize || targetPositionScreenPoint.y <= borderSize || targetPositionScreenPoint.y >= Screen.height - borderSize;
33.         Debug.Log (isOffscreen + " " + targetPositionScreenPoint);
34.  
35.         if(isOffscreen){
36.             Vector3 cappedTargetScreenPosition = targetPositionScreenPoint;
37.             cappedTargetScreenPosition.x = Mathf.Clamp (cappedTargetScreenPosition.x, borderSize, Screen.width - borderSize);
38.             cappedTargetScreenPosition.y = Mathf.Clamp (cappedTargetScreenPosition.y, borderSize, Screen.height - borderSize);
39.  
40.             Vector3 pointerWorldPosition = uiCamera.ScreenToWorldPoint (cappedTargetScreenPosition);
41.             pointerRectTransform.position = pointerWorldPosition;
42.             pointerRectTransform.localPosition = new Vector3 (pointerRectTransform.localPosition.x, pointerRectTransform.localPosition.y, 0f);
43.  
44.         }
45.         else{
46.             Vector3 pointerWorldPosition = uiCamera.ScreenToWorldPoint (targetPositionScreenPoint);
47.             pointerRectTransform.position = pointerWorldPosition;
48.             pointerRectTransform.localPosition = new Vector3 (pointerRectTransform.localPosition.x, pointerRectTransform.localPosition.y, 0f);
49.  
50.     }
51. }
52. }
53.