Loading a Mesh at run time - possible bug?

Unity Engine
1

So here’s what I’m doing:

  • Prefab that has a Mesh Renderer and Mesh Filter component attached - Mesh Filter has no Mesh
  • Using Resource.Load() I load another GO that has the Mesh that I need
  • I add that Mesh as the ().mesh of the Prefab
  • I continue to add various Components based on user selection - blah blah blah

Everything appears to work ok the first time but then the GO that is Resource.Load’ed loses it’s Mesh target in the Editor and I have to re-save from 3DSMax in order for it to come back.

Is this a bug or something I am missing associated with Resource.Load?

2

When you load a prefab with Resource.Load(), anything you do to that object is saved to disk as a permanent change to the file. So you could end up drastically changing that file.

To avoid this, you need to make a new instance of the loaded object and make all changes to that.

I’m not exactly sure what you are doing, no posted code, hopefully this fixes things for you.

3

Indeed I should have posted - apologies:

public GameObject guyTemplate;  // basic shell GO

void spawnGuy() {
    buildGuy(guyTemplate);
    Network.Instantiate(guytemplate, Vector3.zero, Quaternion.identity, 0);
}

void buildGuy(GameObject newGuy) {
    newGuy.name = "someName";
    GameObject tempGO = Resources.Load("specificMesh") as GameObject;
    Mesh tempMesh = tempGo.GetComponent<MeshFilter>().mesh;
    newGuy.GetComponent<MeshFilter>().mesh = tempMesh;
}

Looking in the Inspector - when everything is loaded the Mesh Filter of “specificMesh” changes from meshName to meshName Instance and my only guess is that the Network.DestroyPlayerObjects is destroying it upon exiting.

4

What Tzan said–instead of Resources.Load…, do Instantiate(Resources.Load…

–Eric

5

Yup - was just about to come back here and say that it worked. :slight_smile:

Another quick follow-up as I was poking around today. Is there an easy way to add a GameObject as the child of another GameObject at run time?

6

Set transform.parent.

–Eric