Animation events in Unity - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is an Animation Event in Unity?

An Animation Event is a way to call a function at a specific time during an animation clip. It helps trigger code actions exactly when an animation reaches a certain frame.

beginner

How do you add an Animation Event to an animation clip in Unity?

You open the Animation window, select the animation clip, move the timeline cursor to the desired frame, and click the 'Add Event' button. Then you choose the function to call.

intermediate

What kind of functions can be called by Animation Events?

Functions must be public, belong to the animated GameObject or its children, and can have zero or one parameter of type float, int, string, or object reference.

intermediate

Why use Animation Events instead of checking animation time in Update()?

Animation Events trigger code exactly at the right moment without extra checks every frame, making the code cleaner and more efficient.

beginner

Can Animation Events pass parameters? If yes, what types?

Yes, Animation Events can pass one parameter of type float, int, string, or an object reference to the called function.

What is the main purpose of an Animation Event in Unity?

A To pause the animation

B To change the animation speed

C To blend two animations

D To call a function at a specific time during an animation

Animation Events are designed to call functions at specific times during an animation clip.

Where do you add Animation Events in Unity?

A In the Animation window timeline

B In the Inspector of the GameObject

C In the Project window

D In the Console window

Animation Events are added by selecting the animation clip in the Animation window and placing events on the timeline.

Which of these parameter types can NOT be passed by an Animation Event?

A float

B string

C bool

D int

Animation Events do not support bool parameters; only float, int, string, or object references are allowed.

What must be true about the function called by an Animation Event?

A It must be private

B It must be public and belong to the animated GameObject or its children

C It must return a value

D It must be static

The function must be public and attached to the animated GameObject or its children to be called by an Animation Event.

Why might you prefer Animation Events over checking animation time in Update()?

A They are more efficient and trigger exactly when needed

B They allow faster animation playback

C They automatically pause the animation

D They change the animation clip

Animation Events trigger code exactly at the right moment without continuous checking, improving efficiency.

Explain how to add and use an Animation Event in Unity.

Think about the steps you take in the Animation window to trigger code during animation.

Describe the requirements for a function to be called by an Animation Event.

Consider function visibility, location, and parameter rules.