HighGroundRoyaleNetcode/Assets/Outliner.cs

using UnityEngine;

public class Outliner : MonoBehaviour
{
    public Material outlineMaterial; // Assign in Inspector
    public float outlineWidth = 0.1f; // Customize per object

    private Renderer objRenderer;
    private Material[] originalMaterials;
    private MaterialPropertyBlock propertyBlock;
    
    void Start()
    {
        objRenderer = GetRenderer();
        if (objRenderer != null)
        {
            originalMaterials = objRenderer.sharedMaterials;
            propertyBlock = new MaterialPropertyBlock();
        }
    }

    public void EnableOutline()
    {
        if (objRenderer != null && outlineMaterial != null)
        {
            Material[] newMaterials = new Material[originalMaterials.Length + 1];
            newMaterials[0] = outlineMaterial; // Outline material at index 0

            for (int i = 0; i < originalMaterials.Length; i++)
                newMaterials[i + 1] = originalMaterials[i];

            objRenderer.materials = newMaterials;

            // Set custom outline width
            objRenderer.GetPropertyBlock(propertyBlock);
            propertyBlock.SetFloat("_OutlineWidth", outlineWidth);
            objRenderer.SetPropertyBlock(propertyBlock);
        }
    }

    public void DisableOutline()
    {
        if (objRenderer != null)
        {
            objRenderer.materials = originalMaterials; // Restore original materials
        }
    }

    public Renderer GetRenderer()
    {
        if (TryGetComponent<MeshRenderer>(out MeshRenderer meshRenderer))
            return meshRenderer;
        if (TryGetComponent<SkinnedMeshRenderer>(out SkinnedMeshRenderer skinnedRenderer))
            return skinnedRenderer;
        return null;
    }
}