enum in ink!

enum.rs

    #[derive(
        Debug,
        Copy,
        Clone,
        PartialEq,
        Eq,
        scale::Encode,
        scale::Decode,
        ink_storage::traits::SpreadLayout,
        ink_storage::traits::PackedLayout,
    )]
    #[cfg_attr(
        feature = "std",
        derive(::scale_info::TypeInfo, ::ink_storage::traits::StorageLayout)
    )]
    pub enum STATE {
        STAGING,
        PLAYING,
        ENDED
    }