Issue with axis values when importing from 3ds max

Question

I am using 3ds max to model a character w$$anonymous$$ch contains an animation frame where he is holding a gun in w$$anonymous$$ch it points straight ahead of $$anonymous$$m, like so:

alt text

The issue is when I import it into Unity, the gun does not look straight ahead when I load the animation, but rather, like t$$anonymous$$s:

alt text

As you can see, t$$anonymous$$s does not replicate how it looks in 3ds max, as well as that, the axis alignment is completely off, w$$anonymous$$ch leads to issues when using the LookAt() function.

If i give my character an empty game object, a distance of 20 units away on the zaxis, if i try point my gun at it using LookAt(), it aims straight at the ground.

Anyone know why t$$anonymous$$s might be happening?

Answer 1

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Answer by Cherno · Aug 14, 2015 at 10:55 AM

In Max, rotate the pivot so the green arrow points toward the top. Export again.

If you are using bones, then it's a little bit more tricky. You'd have to apply a vector3 in LateUpdate to rotate the bone in question a certain amount of degrees on each axis so it points the right way after all animations and lookat methods have taken place.

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JayFitz91 · Aug 14, 2015 at 12:42 PM 0

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@Cherno, this has definitely fixed the axis for me, thanks a million. I still have a weird rotation issue but I assume this is to do with what you address using LateUpdate, I can accept your answer if you convert it

Cherno · Aug 14, 2015 at 04:52 PM 0

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Done and done. For the second way of doing things, here is an example:

 public Vector3 rotOffset = new Vector3(90f, 180f, 0f);//just play around with the values
 public Transform bone;//the bone that needs a rotation correction
 
 void LateUpdate() {
      //any kind of Transform.LookAt code goes here before the next line
      bone.eulerAngles = rotOffset;//might need to use localEulerAngles instead
 }

JayFitz91 · Aug 14, 2015 at 04:55 PM 0

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This is great, works flawlessly, thanks for the help

Issue with axis values when importing from 3ds max

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