/**
    Some of the [Rain] scenes let you shrink the doll for a short period,
    so that if you get into a tight spot, you can still survive.

    See input 'rainShrink', which is currently the space bar.

    You can only shrink a limited number of times, given by [available].
    When there are no more shrinks left, a sound is played, and the text disappears.
*/
class RainShrinks : ActionRole {

    @Attribute( about="The number of times in the game that you can shrink the doll" )
    var available = 3


    var trigger : Input

    // A local reference to the Doll which will be shrunk.
    var doll : Doll


    override fun activated() {
        trigger = findInput( "rainShrink" )
        doll = (Game.instance.director as Rain).doll
        updateText()
    }


    override fun tick() {
        super.tick()

        if ( isFinished() && trigger.isPressed()) {
            available --
            updateText()
            // The shrinkage is animated in 5 steps.
            replaceAction(
                (doll:>scale.curry( Vector2(0.9,0.9) ) onceThen Delay(0.1) ).repeat(5) then
                Delay( 3 ) then
                (doll:>scale.curry( Vector2(1/0.9,1/0.9) ) onceThen Delay(0.1) ).repeat(5) thenOnce
                this:>animationComplete
            )
        }

    }

    fun updateText() {
        actor.textAppearance.text = "Space to Shrink ($available)"
    }

    fun animationComplete() {

        if (available == 0) {
            actor.event( "die" ) // Play a sound.
            actor.die()
        }
    }

}