page

 val game = PlayActView.instance.game
 val square = game.find(...) as Appearance
 val triangle = game.find(...) as Appearance

 val myAnimation = flipBookAnimation(actor) {
     // Square for 1 second, rotating (will complete a full turn)
     page(square, 1f) {
         tick { actor, seconds -> actor.angleDegrees += seconds * 360f }
     }
     // Pause to 1/2 second
     page(null, 0.5f)
     // Triangle for 1 second, rotate in the opposite direction
     page(triangle, 1f) {
         tick { actor, seconds -> actor.angleDegrees -= seconds * 360f }
     }
     // Pause to 1/2 second
     page(null, 0.5f)
}

val myFlipBook = flipBook(actor) {
    ... (same body as before)
}

myFlipBook.applyToActor( actor1 )
myFlipBook.applyToActor( actor2 )