Create a motion tween
You create a motion tween by defining properties for an instance, a grouped object, or text in a starting keyframe, and then changing the object's properties in a subsequent keyframe. Flash creates the animation from one keyframe to the next in the frames between the keyframes.
To create a motion tween, you'll take an instance of a tire symbol and make it appear to bounce.
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1.
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In the Timeline (Window > Timeline), double-click the Layer 1 title and type TireAnim. Press Enter (Windows) or Return (Macintosh) to rename the layer.
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2.
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With the TireAnim layer still selected, drag the Tire movie clip from the Library window (Window > Library) to the Stage, positioning it above the tire shadow.
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3.
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Use the Selection tool to reposition the tire, if necessary.
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4.
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With the Selection tool still selected, in the TireAnim layer, select Frame 30. Then press F6 to insert a keyframe.
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5.
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Select Frame 15 and press F6 to add another keyframe.
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6.
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With the playhead still on Frame 15, press Shift to move the tire in a straight line, and drag the tire up.
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7.
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In the TireAnim layer, select any frame between Frames 2 and 14. In the Property inspector, select Motion from the Tween pop-up menu.
An arrow appears in the Timeline between the two keyframes.
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8.
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Select any frame between Frames 16 and 29. Again, use the Tween pop-up menu in the Property inspector to select Motion.
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9.
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Select File > Save to save your changes.
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