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Votes

1

Found in

2022.3.65f1

6000.0.55f1

6000.2.0f1

6000.3.0a4

Issue ID

UUM-113892

Regression

No

Object motion is affected by incorrectly added rotation motion when importing animations

-

Reproduction steps:
1. Open the attached “IN-111019.zip” project
2. Open the “Start” scene
3. Enter Play mode
4. Observe the Game view

Expected result: Both characters have animations and go backwards
Actual result: The “anm_strafe_backward” GameObject on the left, goes up instead of backwards

Reproducible with: 2022.3.65f1, 6000.0.55f1, 6000.2.0f1, 6000.3.0a4

Reproducible on: Windows 11
Not reproducible on: No other environment tested

Notes:
- Additionally, tested by reimporting the FBX each time testing, but no difference was observed
- The problematic GameObject is the “anm_strafe_backward”. The edited version "anm_strafe_backward_noMotionQ" removes rotation motion and the character goes correctly backwards, as designed in 3DS Max. The animation can be opened in Blender, and seen that there is no rotation motion at all on the root bone "priest_m_base_Root"

  1. Resolution Note:

    The source asset has a pre-rotation of 90 degrees on the bone used as the source of root motion, and Unity is interpreting the root motion in accordance with that configuration.

    Removing that pre-rotation fixes the issue.

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