Unreal.js

[Denis]

Hello everybody,

I’m trying to learn how to use Unreal.js & I can’t find a way to do this (I think I have a problem with finding equivalent in JS).
i would like to change a Vector Parameter Value in a Material with a JS script

I’m using this function :

function main(p,size,color) {
if (GWorld.IsServer()) {
let actor = new MyActor_C(GWorld,{X:1, Y:-130.0, Z:60});
console.log(actor);
let mtrl = Material.Load(‘/Game/SphereMaterial’);
console.log(mtrl);
mtrl.SetVectorParameterValue(‘SphereColor’,color);

return function () {
actor.DestroyActor()
}
} else {
return function() {}
}
}

And the only thing I have in return is :

&stc=1

I’m sorry if this is kind of noobish but do you have any idea how I can do this?

Thanks a lot

[anonymous_user_089fe201]

You should use MaterialInstanceDynamic instead of Material.

[Denis]

Thanks for your answer nako_sung !
I did that but when I try to apply it to my actor I have the same error : (SetMaterial is not a function) here is my code :

function main(p,size,color) {
if (GWorld.IsServer()) {
let actor = new MyActor_C(GWorld,{X:1, Y:-130.0, Z:60});
console.log(actor);
let mtrl = GWorld.CreateDynamicMaterialInstance(Material.Load(‘/Game/SphereMaterial’));
console.log(mtrl);
mtrl.SetVectorParameterValue(‘SphereColor’,{G:1,A:1});
** actor.SetMaterial(0,mtrl); //Here comes the error**