Unity general animation, bones root node rotation to parent container!

Question

For three days I have been trying to find a way where the root node of any type of animation could be used to rotate the parent container.

The idea is that the animation’s rotations (root node or controlling node rotations) also rotate the parent container, resulting in the "parent container" always facing in the correct direction of the animation front, no matter what state it ends in.

T$$anonymous$$s has some good advantages and I would really like to find a solution to the problem. See the image at bottom for what I I'm referring to as the "parent container".

I have been focusing on the Y axis as it’s the most important and I have tried many workarounds but all result in the obvious. The container is a parent and in result any applied rotation also affects the c$$anonymous$$ld objects.

Now t$$anonymous$$s just maybe very simple to resolve, if so just slap me with it ;)

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Answer 1

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Answer by scarletshark · Aug 06, 2013 at 07:51 PM

I really can't t$$anonymous$$nk of a situation where you would want to do t$$anonymous$$s... You realize that rotating a parent of a bone based on the bone's rotation would result in 2x the rotation of the bone?

It sounds like what you really want is for the animation to drive the character rotation / translation? If so, you need to look into Mecanim. It simplifies the whole process, and uses character animation as the driver for the movement of the character controller. YouTube Tutorial

But if you really wanted to do t$$anonymous$$s (w$$anonymous$$ch I assure you will give you unwanted results...)

 GameObject spine = GameObject.Find("m002_$$anonymous$$_max2008_01/Bip01 Pelvis/Bip01 Spine");
 GameObject moo = GameObject.Find("/m002_$$anonymous$$_max2008_01");

 void Update(){
     moo.Transform.Rotation.y = spine.Transform.Rotation.y;
 }

Can't check t$$anonymous$$s right now, but you might not be able to set y rotation directly.

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Xtro · Aug 06, 2013 at 07:54 PM 1

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These are the exact same sentenced I thought when I read the question. Mecanim is the right way!

Answer 2

Answer by superme2012 · Aug 06, 2013 at 08:55 PM

Yeah I will scrap t$$anonymous$$s idea and use mecanim humanoid. Thanks for the help.

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scarletshark · Aug 08, 2013 at 02:27 AM 0

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Please don't forget to accept my answer! Always accept the correct answer (the checkmark next to the answer). It helps people get credibility for answering more questions :)

superme2012 · Aug 09, 2013 at 11:16 PM 0

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Hi, I didn’t give it a plus 1 as there is a much easier way to do it. The trick is to add a parent container then move the child out, rotate parent and reset child’s parent.

It’s very easy to do and can’t believe I didn’t work it out sooner.

I should have also mentioned that I am using mecanim generic, the problem I was facing was due to animation doing a full rotation but the container still facing in the opposite direction.

Anyway after more problems I decided to start looking at angular rotation and direction using a navagent. I'm going to use an in place sidestep type animation with a blend tree, hope this works ;)

scarletshark · Aug 10, 2013 at 01:44 AM 0

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@superme2012 Whatever you are doing is very uncommon, and does not represent what most developers would do in your situation. I believe your problem is that you have your character model inside another game object.... and you're wanting that game object to rotate. Your solution will work, but I wouldn't recommend it unless absolutely necessary.

I was referring to Mecanim's built-in ability to rotate and translate objects based on animation data. See this video I made for you: Mecanim Rotation

In that video, I have the "parent node" selected, which is the character model file titled "robot." It is assigned a mecanim animator... Inside the parent node are the bones and mesh. As you can see, the "parent node" rotates perfectly according to the animation data.

superme2012 · Aug 10, 2013 at 04:04 AM 1

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What I'm doing is very uncommon, after tweaking some code last night I managed to get the functionality I was looking for. I did it already but didn’t notice due to the scruffy code lolz

That video is very interesting, I cannot alter any aspect of the bones, in doing so has some nasty results.

What you did was in most cases the solution so I give it the thumbs up.

scarletshark · Aug 10, 2013 at 04:06 AM 0

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Thanks! Glad you figured it out.

Unity general animation, bones root node rotation to parent container!

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