[SOLVED] Issue with passing dynamically created material to a dynamically attached script

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1

Hi,

We ran into an issue with scripting as follows:
We are creating an entity at run-time and then attaching a script instance to it.
When we try to pass a material (which is also dynamically created previously), the newly created script instance does not receive the material and instead sees a null value.

Sample project here with relevant parts of code:
https://playcanvas.com/editor/project/918845

Console logs should show meshGenerator.initialize receiving handle to material with name: “mat-UVMap0.png” but receives null.

What are we doing wrong here? Is it to do with how we are declaring the attribute? (Material passed from Editor works fine though)

Thanks.

2

The issue is that the meshGenerator is expecting a material asset for materialK

MeshGenerator.attributes.add("materialK", {type: "asset", assetType: "material",title:"MaterialK"});

But createMapTexture is giving it a pc.StandardMaterial, not an asset

        //make a new material
        const material0 = new pc.StandardMaterial();

        //...
        //Binds texture to the box render
        box.script.create("meshGenerator", {
            attributes: {

                textures: boxTexture,
                materialK: material0 // This is a pc.StandardMaterial, not asset
            }
        });
3

Thanks @yaustar.

So is there a recommended way to pass the material to the script?

Or is it easier to pass an entity and let the script extract the material from it?

Thanks.

4

I would do it after the script is created for ease to be honest and perhaps call your own script init function.

eg

var scriptInstance = box.script.create("meshGenerator");
scriptInstance.materialK = material0;
1 Like
5

@yaustar : Thanks again.

That worked. We finally ended up using our own init function and passed the material manually.