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Understanding iTween Callbacks

One of the most frequent problems I see people have with iTween is with callbacks that don’t fire.

At it’s core iTween leverages Unity’s SendMessage method for carrying out it’s 3 callbacks: “onStart”, “onUpdate” and “onComplete”. When you add an iTween to a GameObject, iTween will throw all callbacks against the GameObject that is being animated. Where most people have difficulties is when they assign iTweens to GameObjects that don’t physically contain the methods they are attempting to call.

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