Animating arms with tools/weapons

I looking for a good way to place weapons/tools in the hands and animate them accordingly. My current approach was to make the animation with the hands, attach the GameObject to a bone in the hand, then just animate it and let the game object follow. For simple things this works fine, like punching and swinging a sword (assuming the hand looks like it is gripping things properly). However, this looks sloppy when doing something like aiming down the sights of a gun or anything that takes any kind of precision with the object in hand. In cases like this I figured it would be best to some how animate the hand to follow the object and move the object but I can't figure out a way to do this in Unity. Any suggestions on a good way to do this would be great.

 

Sounds like you're looking for IK. If you have Pro, you can use OnAnimatorIK(). Otherwise consider getting Final IK for Free or Pro.

 

Thank you, I'll give that a look!

 

Oh, so this is going to cost me money anyway I go about IK. Guess I'll have to stick with sloppy animations then.

 

You can write your own IK, but that can be a pretty big task.

 

Has to be some other way to go about it.

 

What you described in your original post was inverse kinematics.

You could also create your source animations so they align perfectly without any need for post-processing of bone placement.

 

Hi, What is IK? It's helps to my problem? My problem is disable animation from the hand when the character model runs.

 

who are you? it is inverse kinematics, dude

 

Thank you. I'm new in Unity

 

Welcome to Unity then! Here's info on IK in Unity: http://docs.unity3d.com/Documentation/Manual/InverseKinematics.html

In your case, to disable animation from the hand, you'll want to use an avatar mask: https://unity3d.com/learn/tutorials/modules/beginner/animation/avatar-masks

 

Thank you very much TonyLi!

 

Happy to help!