koobas.hobune.stream
WHy cant I create the GetComponentsInChildren(Renderer) array?
I get the following error at this line: InvalidCastException: Cannot cast from source type to destination type. I'm really not sure why, as the code emulates the documentation perfectly. Is theresomething unique about renderer types?
var objectRenderers : Renderer[];
objectRenderers=downloadedAssetBundle.GetComponentsInChildren(Renderer);
Note: downloadedAssetBundle is an instantiated mainAsset (GameObject) from an asset bundle.
This is why I hate UnityScript. GetComponentsInChildren return type is Component[], and objectRenderers is Renderer[]. The compiler should be smart and try to do a cast automatically or at least show a compile-time error stating that the types don't match. But no, it accepts your code and crash at runtime...
A manual cast to Renderer[] should work:
var objectRenderers : Renderer[];
objectRenderers=downloadedAssetBundle.GetComponentsInChildren(Renderer) as Renderer[];
Well this manages to get past the initial error but then when I get to the next line which reads for (var eachPart : Renderer in objectRenderers) --(exactly the same as documentation) it crashes because it looks like the objectRenderers array doesn't actually exist. Any idea? Thanks!
$$anonymous$$y bad. The code I posted actually doesn't work. Apparently its not possible to cast the entire array, but you can cast individual element of it in the "foreach" loop.
//objectRenderers will be a Component[]
var objectRenderers = downloadedAssetBundle.GetComponentsInChildren(Renderer);
for (var eachPart : Renderer in objectRenderers) {
...
Huh? That's the code I had originally which didn't work..Did you miss something? I tried doing [code] var objectRenderers = downloadedAssetBundle.GetComponentsInChildren(Renderer); for (var eachPart : Renderer in objectRenderers as Renderer)
{..[/code] but that didnt work either :(
Not really. This way I'm not declaring the type of objectRenderers and letting the compiler choose one. In this case it will be Component[].
Sometimes UnityScript behaves differently between versions. What version of Unity are you using?
Ahha. I removed the declaration and it worked!! $$anonymous$$any thanks!!
Here's the final piece of working code. Note: objectRenderers is never declared. If you do declare it , it will crash.
objectRenderers=downloadedAssetBundle.GetComponentsInChildren( Renderer );
for (var eachPart : Renderer in objectRenderers ) //as Renderer??
{
//set a transparent shader
eachPart.sharedMaterial.shader = Shader.Find ("Transparent/Diffuse");
eachPart.sharedMaterial.color = Color.blue;
eachPart.sharedMaterial.color.a=0.3;
}
