(prop :FlxActionDigital continueAction) 
(prop actionManager (new FlxActionManager))
(prop &mut :Movie<String,FlxStagePosition,FlxStageFacing,FlxScreenPosition,ActorFlxSprite,FlxSound,String> movie)

(defNew []
    (set continueAction (new FlxActionDigital "Continue" onContinue))
    // TODO allow configuring continue keys -- any key, specifically mapped keys, etc.
    (continueAction.addKey SPACE JUST_PRESSED)
    (continueAction.addMouse LEFT JUST_PRESSED)
    (actionManager.addAction continueAction)
    (FlxG.inputs.add actionManager)
    (set actionManager.resetOnStateSwitch NONE))

(prop &mut :SceneFlxState currentState)
(method :Void showScene [:Scene<String,FlxStagePosition,FlxStageFacing,FlxScreenPosition,ActorFlxSprite> scene :Appearance appearance :Continuation cc]
    // TODO on the first appearance, give a super (for some scenes but probably not others... hm....)
    (set currentState (cast scene SceneFlxState))
    (FlxG.switchState currentState)
    (cc))

(var STAGE_LEFT_X 150)
(var STAGE_RIGHT_X (- 1280 150))
(var ACTOR_Y 500)
(var ACTOR_WIDTH 300)

(method :Void showCharacter [:Character<FlxStagePosition,FlxStageFacing,ActorFlxSprite> character :Appearance appearance :Continuation cc]
    // TODO on the first appearance, show name and description (maybe? also probably not for all?)
    // TODO  also allow for manually defined flipped frames so text doesn't mirror
    (set character.actor.flipX ?!(= character.stageFacing character.actor.defaultFacing))
    (character.actor.setGraphicSize ACTOR_WIDTH)
    (set character.actor.x
        (- (case character.stagePosition
                (Left
                    STAGE_LEFT_X)
                (Right
                    STAGE_RIGHT_X))
            (/ character.actor.width 2)))
    (set character.actor.y ACTOR_Y)
    (currentState.add character.actor)
    (cc))

(prop &mut :Null<Continuation> nextCC)
(method onContinue [:FlxActionDigital continueAction]
    (whenLet [cc nextCC]
        (set nextCC null)
        (cc)))

(method :Void startWaitForInput [:Continuation cc]
    (set nextCC cc))

(method :Void stopWaitForInput []
    (set nextCC null))

(var DIALOG_X 300)
(var DIALOG_WIDTH (- 1280 ACTOR_WIDTH ACTOR_WIDTH))
(var DIALOG_Y 500)
(var DIALOG_HEIGHT (- 720 DIALOG_Y))
// TODO these could be customizable to the Actor
(var DIALOG_BOX_COLOR FlxColor.BLACK)
(var DIALOG_COLOR FlxColor.WHITE)
(var DIALOG_SIZE 24)

(var &mut :FlxSprite dialogBox)
(var &mut :FlxText dialogText)
(var &mut :FlxText speakerNameText)

(method showDialog [:String speakerName :SpeechType<FlxStagePosition,FlxStageFacing,ActorFlxSprite> type :String wryly :String text :Continuation cc]
    // TODO handle text messages, wrylies, off-screen, from-phone, etc. via (case type)
    // TODO attribute on-screen dialogue to the character's stageposition
    // Make a dialog box
    (unless dialogBox
        (set dialogBox (new FlxSprite DIALOG_X DIALOG_Y))
        (dialogBox.makeGraphic DIALOG_WIDTH DIALOG_HEIGHT DIALOG_BOX_COLOR)
        (currentState.add dialogBox))
    (dialogBox.revive)
    // show the dialog
    (unless dialogText
        // TODO use FlxTypeText to reveal dialog gradually
        (set dialogText (new FlxText DIALOG_X DIALOG_Y DIALOG_WIDTH "" DIALOG_SIZE))
        (currentState.add dialogText))
    (set dialogText.text text)
    // show the speaker name
    (unless speakerNameText
        (set speakerNameText (new FlxText DIALOG_X DIALOG_Y DIALOG_WIDTH "" DIALOG_SIZE))
        (currentState.add speakerNameText))
    (if speakerName
            {
                (set speakerNameText.text "${speakerName}:")
                (speakerNameText.revive)
                (set dialogText.y (+ DIALOG_Y speakerNameText.height))
            }
        (set dialogText.y DIALOG_Y))
    (dialogText.revive)

    // wait for input or delay
    // TODO customize the delay in a more sophisticated way to the dialog length or voice-over length,
    // or rely on FlxTypeText to add breathing room
    (movie.delay .length (text.split " ")
        ->{
            (dialogText.kill)
            (speakerNameText.kill)
            (dialogBox.kill)
            (cc)
        }))

(method :Void playSound [:FlxSound sound :Float volumeMod :Bool waitForEnd :Continuation cc]
    (let [originalVolume sound.volume
            restoreOriginalVolume ->(set sound.volume originalVolume)]
        (*= sound.volume volumeMod)
        (set sound.onComplete 
            (if waitForEnd
                    ->{(restoreOriginalVolume) (cc)}
                restoreOriginalVolume)))
    (sound.play)
    (unless waitForEnd (cc)))

(prop &mut :FlxSound music)
(prop MUSIC_FADE_SEC 1)
(prop MUSIC_FADE_STEPS 10)
(method :Void playSong [:String song :Float volumeMod :Bool loop :Bool waitForEnd :Continuation cc]
    (set music (FlxG.sound.play song 0 loop null true (if waitForEnd cc ->{})))
    (.start (new FlxTimer)
        (/ MUSIC_FADE_SEC MUSIC_FADE_STEPS)
        ->:Void _ (+= music.volume (/ volumeMod MUSIC_FADE_STEPS))
        MUSIC_FADE_STEPS)
    (set music.persist true)
    (unless waitForEnd (cc)))

(method :Void stopSong [] (when music (music.stop)))