// CC0, use as you like

// If you work with .blend files directly (also added check for sketchup), and save them during runtime. You notice any meshcollider

// Stops working. This is a band aid for that issue.

// Install the Editor Coroutines package to use. Also do not forget to place this script in a folder that starts with "Editor"

using System.Collections;

using System.Collections.Generic;

using UnityEngine;

using UnityEditor;

using Unity.EditorCoroutines.Editor;

public class BlenderRuntimeImportFix : AssetPostprocessor

{

void OnPostprocessModel(GameObject g)

{

if (Application.isPlaying && (assetPath.Contains(".blend") || assetPath.Contains(".skp")))

{

EditorCoroutineUtility.StartCoroutine(RefreshMeshColliders(), this);

}

}

IEnumerator RefreshMeshColliders()

{

var colliders = Object.FindObjectsOfType<MeshCollider>();

int c = colliders.Length;

List<MeshCollider> updateColliders = new List<MeshCollider>();

for (int i = 0; i < c; i++)

{

if (colliders[i].enabled)

{

updateColliders.Add(colliders[i]);

colliders[i].enabled = false;

}

}

// Wait a frame.

yield return null;

c = updateColliders.Count;

for (int i = 0; i < c; i++)

{

updateColliders[i].enabled = true;

}

}

}