class Drip : ActionRole() {

    @CostumeAttribute
    var isAcid = false

    var speed = 0.0

    override fun createAction() : Action {
        return this:>move.action()
    }


    fun move() : bool {
        val play = Play.instance

        speed -= play.gravity
        speed *= 0.995 // Drag - stops the drips getting too fast
        actor.y += speed

        if (play.overlappingSomethingDeadly( actor ) != null) {
            splash()
            return true
        }
        val ship = play.ship
        if (ship != null && PixelOverlapping.instance.overlapping( actor, ship.actor ) ) {
            splash()
            if (isAcid) {
                ship.explode()
            }
        }

        return false
    }

    fun splash() {
        actor.event( "splash" )

        for ( i in 0..6 ) {
            actor.createChild( "droplet" )
        }

        actor.die()
    }
}