Method pre_bgm

src/script.rs:216–220

(&mut self)

        self.timeline.insert_bgm(index, bgm);
    }

    pub(crate) fn insert_choice(&mut self, index: usize, choices: HashMap<String, Label>) {
        self.timeline.insert_choices(index, choices);
    }

    pub(crate) fn insert_clear(&mut self, index: usize) {
        self.clear.insert(index);
    }