add DifficultyChanger.cs

popcorn/Assets/MyGame/Scenes/MiniGame/MiniGame.unity

@@ -1860,6 +1860,7 @@ GameObject:
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   m_Name: Manager
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@@ -1944,6 +1945,18 @@ MonoBehaviour:
   generateStageCount: 1
   beginStageOffset: 0.5
   partsToPartsOffset: 0
+--- !u!114 &1870432537
+MonoBehaviour:
+  m_ObjectHideFlags: 0
+  m_CorrespondingSourceObject: {fileID: 0}
+  m_PrefabInstance: {fileID: 0}
+  m_PrefabAsset: {fileID: 0}
+  m_GameObject: {fileID: 1870432532}
+  m_Enabled: 1
+  m_EditorHideFlags: 0
+  m_Script: {fileID: 11500000, guid: a554772b1d9244b29ee1ba77aae187a5, type: 3}
+  m_Name: 
+  m_EditorClassIdentifier: 
 --- !u!114 &1932485204
 MonoBehaviour:
   m_ObjectHideFlags: 0

popcorn/Assets/MyGame/Scenes/MiniGame/Scripts/DifficultyChanger.cs

@@ -0,0 +1,28 @@
+using System;
+using System.Collections.Generic;
+using UniRx;
+using UnityEngine;
+
+namespace MyGame.Scenes.MiniGame.Scripts
+{
+    public class DifficultyChanger : MonoBehaviour
+    {
+        public IReadOnlyReactiveProperty<ScrollGameDifficulty> Difficulty => difficulty;
+        private readonly ReactiveProperty<ScrollGameDifficulty> difficulty = new();
+        private readonly CompositeDisposable changeDifficultyDisposable = new();
+        private ScrollGameStageDifficultyData difficultyData;
+
+        private void Start()
+        {
+            difficulty.AddTo(this);
+            changeDifficultyDisposable.AddTo(this);
+        }
+
+        public void SetData(ScrollGameStageDifficultyData data) => difficultyData = data;
+
+        public void UpdateTime(float elapsed)
+        {
+            difficulty.Value = difficultyData.GetDifficultySwitchTime(elapsed);
+        }
+    }
+}

popcorn/Assets/MyGame/Scenes/MiniGame/Scripts/DifficultyChanger.cs.meta

@@ -0,0 +1,3 @@
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+guid: a554772b1d9244b29ee1ba77aae187a5
+timeCreated: 1659335216