fix(chart): Official hold length calculation

Author: MisaLiu

src/chart/index.ts

@@ -106,7 +106,7 @@ export class GameChart {
     for (const note of data.notes) {
       if (note.type === 3) {
         const { isOfficial } = note;
-        const holdLength = (isOfficial ? note.holdTime! / 1000 : note.holdLength!) * note.speed * sizer.height / sizer.noteScale;
+        const holdLength = (isOfficial ? note.holdTime! * 0.0006 : note.holdLength!) * note.speed * sizer.height / sizer.noteScale;
 
         note.sprite!.children[0].visible = true;
         note.sprite!.children[1].scale.y = 1;

src/chart/note.ts

@@ -180,7 +180,7 @@ export class GameChartNote {
     this.score.animationTime = null;
 
     if (this.sprite && this.type === EGameChartNoteType.HOLD) {
-      const holdLength = (this.isOfficial ? this.holdTime! / 1000 : this.holdLength!) * this.speed;
+      const holdLength = (this.isOfficial ? this.holdTime! * 0.0006 : this.holdLength!) * this.speed;
 
       this.sprite.children[0].visible = true;
       this.sprite.children[1].scale.y = 1;

src/chart/tick.ts

@@ -170,7 +170,7 @@ export function onChartTick(this: GameChart, currentTime: number, container: Con
       let realHoldLength = holdLength! * size.height / size.noteScale;
       if (time <= currentTime) {
         realHoldLength = (
-          isOfficial ? (holdEndTime! - currentTime) / 1000 : (holdFloorPosition! - judgeline.floorPosition)
+          isOfficial ? (holdEndTime! - currentTime) * 0.0006 : (holdFloorPosition! - judgeline.floorPosition)
         ) * speed * size.height / size.noteScale;
 
         const [ spriteHead, spriteBody, spriteEnd ] = sprite.children;