@Override
public Optional<EyeLocationData> fill(
DataHolder dataHolder, EyeLocationData manipulator, MergeFunction overlap) {
if (supports(dataHolder)) {
final EyeLocationData merged = overlap.merge(manipulator.copy(), from(dataHolder).get());
return Optional.of(manipulator.set(Keys.EYE_HEIGHT, merged.eyeHeight().get()));
}
return Optional.absent();
}
@Override
public DataTransactionResult set(
DataHolder dataHolder, EyeLocationData manipulator, MergeFunction function) {
if (!supports(dataHolder)) {
return DataTransactionBuilder.failResult(manipulator.getValues());
}
final ImmutableValue<Double> newValue = manipulator.eyeHeight().asImmutable();
final EyeLocationData oldManipulator = from(dataHolder).get();
final ImmutableValue<Double> oldValue = oldManipulator.eyeHeight().asImmutable();
final EyeLocationData newData = function.merge(oldManipulator, manipulator);
((IMixinEntity) dataHolder).setEyeHeight(newData.eyeHeight().get());
return DataTransactionBuilder.successReplaceResult(newValue, oldValue);
}