Method current_bgm

src/script.rs:208–210

(&self)

        self.backlog = backlog;
    }

    pub(crate) fn insert_background(&mut self, index: usize, command: Command) {
        self.timeline.insert_background(index, command);
    }

    pub(crate) fn insert_bgm(&mut self, index: usize, bgm: String) {