How to create tween animations in ActionScript or UnrealScript

Note: Avoid mixing time line animation with ActionScript tweening, as you may get unwanted results.

Tweening animation in ActionScript

_global.gfxExtensions = true; // this line is only necessary if you wish to tween on the Z axis (in 3D).
import gfx.motion.Tween;
import mx.transitions.easing.*;

Tween.init(); // this line adds tween functionality to all movie clips.

MyMovieClip.tweenTo(3, {_x:250, _y:250, _z:-5000, _alpha:50}, Strong.easeOut);

• tweenTo() - Tweens from the position of the object on the stage to the position given by the properties in the code.
  • Duration in seconds
  • Object containing destination X
  • Object containing destination Y
  • Object containing destination Z
  • Alpha
  • Etc.
  • Tween type and method
    • Tween types
      • Back
      • Bounce
      • Elastic
      • Regular
      • Strong
      • None
    • Tween methods
      • easeIn
      • easeOut
      • easeInOut
• tweenFrom() - tweens from the properties given in the code to the position of the object on the stage.
  • Duration in seconds
  • Object containing source X
  • Object containing source Y
  • Object containing source Z
  • Alpha
  • Etc.
  • Tween type and method
    • Tween types
      • Back
      • Bounce
      • Elastic
      • Regular
      • Strong
      • None
    • Tween methods
      • easeIn
      • easeOut
      • easeInOut
• tweenEnd() - Jumps to the end of the tween, ending it immediately.

Tweening Animation in UnrealScript

TweenTo(ArsenalMC, 0.5, "_z", -1500.0, TWEEN_EaseOut, "SomeFunction");

• TweenTo() - Tweens from the position of the object on the stage to the position given by the properties in the code.
  • MovieClip Reference as a GFxObject
  • Duration in seconds as a float
  • Property to tween as a string
  • Value to tween to as a float
  • Tween type as a constant
  • (optional) Function to execute when finished as a string