Resolved 2D Sprite & Tilemap localscale resetting after Start()

Ok so, in short I'm trying to change the scale of both a singular sprite, and a Grid to scale the child tilemap as well. Before anyone asks "Why do that?" Its because when the application starts, I want the Start() function to scale the assets based on the resolution. I simply want it to work that way, makes it easier for me to manage. If it is impossible for it to work that way I will try another option. Here is my script that I have attached to both objects. I have tried Vector3 at first, so now I'm trying with Vector2. All the examples I've seen use something similar and it works for them but I dont understand why after the Start function they return to normal scale. The debug image I provided shows this. I do not have an animator component on either of these objects as I read that can cause an issue. They are both children of a UI panel with 0 opacity to help with centering the sprite in an odd area on the app.

Code (CSharp):

1. using System.Collections;
2. using System.Collections.Generic;
3. using UnityEngine;
4. using UnityEngine.UI;
5.  
6. public class Scaling : MonoBehaviour
7. {
8.     float scaleFactor;
9.     // Start is called before the first frame update
10.     public void Start()
11.     {
12.         if (Screen.width == 720 && Screen.height == 1280)
13.         {
14.             scaleFactor = 1f;
15.         }
16.         if (Screen.width == 1080 && Screen.height == 1920)
17.         {
18.             scaleFactor = 2f;
19.             print("Oooga booga"); //Just to make sure it ran...
20.         }
21.  
22.  
23.         var thisObj = this.transform.localScale; //To spare typing
24.         thisObj = new Vector2(thisObj.x * scaleFactor, thisObj.y * scaleFactor); //where the scaling is done
25.         print(thisObj.x);//display new scale.
26.         print(thisObj.y);
27.     }
28.  
29.     private void Update()
30.     {
31.         var thisObj = this.transform.localScale;
32.         print(thisObj.x); //Check Scale. CURRENT ISSUE: Scale IMMEDITATELY Resets after Start.
33.         print(thisObj.y);
34.     }
35. }
36.  

Cracking my head open over this, no amount of research helped.

 

Your "to spare typing" is the culprit. Vector3 is a struct, a value type, which means you're creating a copy of the data and not modifying the original. You're never actually setting the transform's scale.

See:
https://docs.microsoft.com/en-us/dotnet/csharp/language-reference/builtin-types/value-types
https://docs.microsoft.com/en-us/dotnet/csharp/language-reference/keywords/reference-types

 

Thank you! I didn't know about the terms you linked above, it was a good read. What I ended up doing was making a new line after line 24 and adding: this.transform.localscale = thisObj. That seems to have fixed it.