Main things of interest:
* IAnimationStateMachine - state machine for animations; can load
from json.
* AnimationTESR - automatic TESR for animated models.
* AnimationModelBase - same for entities.
* ITimeValue - time-varying value, used to control animation
parameters from code.
* TESRs can now be batched - look at TESR.renderTileEntityFast +
TE.hasFastRenderer.
* RegionRenderCache is not accessible to TESRs and other client-side
logic - MinecraftForgeClient.getRegionRenderCache.
Entry point: ModelLoaderRegistry
loader interface: ICustomModelLoader
custom model: IModel
ModelLoader is responsible for splicing into vanilla model system.
(you probably don't need to use it directly)
Interop with vanilla models isn't great yet
(vanilla models can't refer to custom ones as parents), will improve in
the future.
Includes loader for B3D models, with animation support
(net.minecraftforge.client.model.b3d).
Blender export plugin with compatible coordinate system:
https://github.com/RainWarrior/B3DExport
OBJ loader is being written, will be included at some point in the
future. For now you can convert OBJ to B3D via blender, or wait.
RainWarrior