Root motion in Unity - Interactive Code Practice

Practice - 5 Tasks

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easy

Complete the code to enable root motion on the Animator component.

Unity

Animator animator = GetComponent<Animator>();
animator.[1] = true;

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AapplyRootMotionEnabled

BapplyRootMotion

CapplyRootMotionFlag

DapplyRootMotionTrue

Attempts:

3 left

💡 Hint

Common Mistakes

Using a non-existent property name.

Trying to set root motion on the wrong component.

The correct property to enable root motion is applyRootMotion.

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medium

Complete the code to override root motion in the Animator by implementing the correct method.

Unity

void [1]() {
    // Custom root motion handling
}

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AOnRootMotionApply

BOnRootMotionUpdate

COnAnimatorRoot

DOnAnimatorMove

Attempts:

3 left

💡 Hint

Common Mistakes

Using a method name that does not exist in Unity's Animator callbacks.

Trying to override root motion in Update() instead.

The method OnAnimatorMove is called when root motion is applied and can be overridden for custom handling.

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hard

Fix the error in the code to correctly apply root motion delta to the transform.

Unity

void OnAnimatorMove() {
    transform.position += [1];
    transform.rotation *= animator.deltaRotation;
}

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Aanimator.deltaPosition

Banimator.rootPosition

Canimator.positionDelta

Danimator.motionDelta

Attempts:

3 left

💡 Hint

Common Mistakes

Using a non-existent property like rootPosition or motionDelta.

Confusing deltaPosition with transform.position.

The correct property to get the root motion position change is animator.deltaPosition.

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hard

Fill both blanks to create a dictionary that maps animation clip names to their root motion curves.

Unity

Dictionary<string, AnimationCurve> rootMotionCurves = new Dictionary<string, AnimationCurve>() {
    { [1], [2] }
};

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A"Run"

BrunCurve

C"Jump"

DjumpCurve

Attempts:

3 left

💡 Hint

Common Mistakes

Using variable names instead of strings for keys.

Swapping the key and value positions.

The key should be the animation clip name as a string, and the value should be the corresponding AnimationCurve variable.

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hard

Fill all three blanks to correctly update the Animator's root motion position and rotation in OnAnimatorMove.

Unity

void OnAnimatorMove() {
    Vector3 rootPos = transform.position + [1];
    Quaternion rootRot = transform.rotation * [2];
    transform.SetPositionAndRotation(rootPos, [3]);
}

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Aanimator.deltaPosition

Banimator.deltaRotation

CrootRot

Dtransform.rotation

Attempts:

3 left

💡 Hint

Common Mistakes

Using transform.rotation instead of the combined rootRot.

Not adding deltaPosition to current position.

The root motion delta position and rotation are added to the current transform, then applied using SetPositionAndRotation.