I am updating my mod, BiblioCraft, from 1.8.9 to 1.9.4 / 1.10.2 (tried both, same issue) and I have some custom models that implement IPerspectiveAwareModel. The interface adds the handlePerspective method to my custom model and in 1.8.9 would run every tick on item models. Now in 1.9.4 / 1.10.2 it doesn't get called at all and my models transforms are unaffected by anything that happens in this method.

 

What changed here? Is there something new I need to do to make the handlePerspective method fire in 1.9.4 / 1.10.2?

I should also mention I am loading an OBJ model so I am pretty sure it is using the OBJBakedModel class when rendering. After further investigation, the OBJBakedModel class implements IPerspectiveAwareModel and it calls the handlePerspective method like this:

 

        @Override
        public Pair<? extends IBakedModel, Matrix4f> handlePerspective(TransformType cameraTransformType)
        {
            return IPerspectiveAwareModel.MapWrapper.handlePerspective(this, state, cameraTransformType);
        }

 

So it looks like it is calling the static, state sensitive method of handlePerspective for IPerspectiveAwareModel instead of the method with just the TransformType, which is the one I need to get called in my custom OBJ model that extends IPerspectiveAwareModel. In debug mode in Eclipse I can see that the state sensitive version of handlePerspective is indeed running on IPerspectiveAwareModel, but the handlePerspective on my custom model never gets called.

 

This is starting to maybe look like a bug in forge, but I'd like a second opinion. Should I create an issue on the forge github for this? I am still wondering too if maybe there is just something new I have to do that wasn't in 1.8.9 that I am unaware of.

 

 

 

Any suggestions or confirmation from the Forge team?  It looks like Nuchaz logged a bug report that was assigned, but the owner hasn't been active for a few months.

 

https://github.com/MinecraftForge/MinecraftForge/issues/3173