タイトル順で並べ替える機能を実装

public/src/js/songselect.js

@@ -141,6 +141,9 @@ class SongSelect{
 				return a.id > b.id ? 1 : -1
 			}
 		})
+		if (localStorage.getItem("titlesort") ?? "false" === "true") {
+			this.songs.sort((a, b) => a.title.localeCompare(b.title));
+		}
 		if(assets.songs.length){
 			this.songs.push({
 				title: strings.back,
@@ -262,6 +265,13 @@ class SongSelect{
 					action: "detarame",
 				});
 
+
+				this.songs.push({
+					title: "タイトル順で並べ替え",
+					skin: this.songSkin.customSettings,
+					action: "titlesort",
+				});
+
 		this.songs.push({
 			title: strings.back,
 			skin: this.songSkin.back,
@@ -981,6 +991,20 @@ class SongSelect{
 								}
 								localStorage.setItem("detarame", detarame);
 							}, 100);
+						} else if (currentSong.action === "titlesort") {
+							this.playSound("se_don");
+							setTimeout(() => {
+								let titlesort = localStorage.getItem("titlesort") ?? "false";
+								const input = prompt("タイトル順で並べ替えするには\"true\"を入力してね！", titlesort);
+								if (input === null) {
+									// キャンセル
+								} else if (input === "") {
+									titlesort = "false";
+								} else {
+									titlesort = input;
+								}
+								localStorage.setItem("titlesort", titlesort);
+							}, 100);
 						}
 		}
 		this.pointer(false)