potential file format

Slide.fbs

//SLIDE
table Slide {
    slideId: string;
    creationId: string;
    design:Design;
    activity:Activity;
}

//DESIGN
table Design {
    bg:ImageAsset;
    stickers: [Sticker];
}

table Sticker {
   img: ImageAsset;
}

//ACTIVITIES
union Activity {
    Activity_Questions, 
    Activity_Soundboard, 
    Activity_SaySomething, 
    Activity_Puzzle, 
    Activity_Video, 
    Activity_TalkType
}

//QUESTIONS
table Activity_Questions {
    questions: [Question];
}

table Question {
    label: string;
    trace: Trace;
    audio: QuestionAudio;
}

table QuestionAudio {
    question: AudioAsset;
    answer: AudioAsset;
    mistake: AudioAsset;
}

//SOUNDBOARD 
table Activity_Soundboard {
    options: Soundboard_Options;
    items: [Soundboard_Item];
}

table Soundboard_Options {
    introAudio: AudioAsset;
    bgAudio: AudioAsset;
    oneTime: bool;
    showHints: bool;
}

table Soundboard_Item {
    trace: Trace;
    audio: AudioAsset;
    jump: string;
}

//PUZZLE 
table Activity_Puzzle {
    options: Puzzle_Options;
    items: [Puzzle_Item];
}

table Puzzle_Options {
    jump: string;
    audio: AudioAsset;
    freePlay: bool;
    easyMode: bool;
    disableHints: bool;
    shapes3d: bool;
}

table Puzzle_Item {
    trace: Trace;
    audio: AudioAsset;
}

//SAY SOMETHING
table Activity_SaySomething {
    audio: AudioAsset;
    continueAfter: bool;
    jump: string;
}

//VIDEO
table Activity_Video {
    src: string;
    srcType: Video_SourceType;
}

enum Video_SourceType : byte { Upload = 1, Youtube }

//TALK_TYPE 
table Activity_TalkType {
    options: TalkType_Options;
    items: [TalkType_Item];
}

table TalkType_Options {
    jump: string;
    audio: AudioAsset;
    showHints: bool;
}


table TalkType_Item {
    trace: Trace;
    audio: AudioAsset;
    answer: string;
    answerType: TalkType_AnswerType;
}

enum TalkType_AnswerType : byte { Keyboard = 1, Microphone }

//GENERIC OBJECTS

//IMAGES
table ImageAsset {
    src: ImageAssetSource;
    position: Point;
    scale: double;
    rotation: double;
}

union ImageAssetSource {ImageAssetImageSource, ImageAssetTextSource}

table ImageAssetImageSource {
    url: string;
}

table ImageAssetTextSource {
    html: string;
}

//TRACE
table Trace_Rectangle {
    startPoint: Point;
    endPoint: Point;
}

union Trace {Trace_Rectangle}

//AUDIO
table AudioAsset {
    src: string;
}

//POINT
table Point {
    x: double;
    y: double;
}