5 files changed, 100 insertions, 7 deletions
diff --git a/AlienSurvival/Assets/Scripts/Utils/GameLoop.cs b/AlienSurvival/Assets/Scripts/Utils/GameLoop.cs
index 6bbb140..6ae7d87 100644
--- a/AlienSurvival/Assets/Scripts/Utils/GameLoop.cs
+++ b/AlienSurvival/Assets/Scripts/Utils/GameLoop.cs
@@ -2,18 +2,17 @@ using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 
-public class GameLoop : MonoBehaviour
+public class GameLoop : Singleton<GameLoop>
 {
-	static public GameLoop Instance { get; private set; }
 
-	public int indexOfUpdate { get; private set; } = 0;
-
-	private void Awake()
+	public GameLoop()
 	{
-		Instance = this;
+		indexOfUpdate = 0;
 	}
 
-	private void Update()
+	public int indexOfUpdate { get; private set; } = 0;
+
+	public void Update()
 	{
 		++indexOfUpdate;
 	}
diff --git a/AlienSurvival/Assets/Scripts/Utils/Singleton.cs b/AlienSurvival/Assets/Scripts/Utils/Singleton.cs
new file mode 100644
index 0000000..d7aad49
--- /dev/null
+++ b/AlienSurvival/Assets/Scripts/Utils/Singleton.cs
@@ -0,0 +1,24 @@
+public class Singleton<T> where T : class, new()
+{
+	private static T _instance;
+	private static readonly object syslock = new object();
+
+	public static T Instance
+	{
+		get
+		{
+			if (_instance == null)
+			{
+				lock (syslock)
+				{
+					if (_instance == null)
+					{
+						_instance = new T();
+					}
+				}
+			}
+			return _instance;
+
+		}
+	}
+}
+\ No newline at end of file
diff --git a/AlienSurvival/Assets/Scripts/Utils/Singleton.cs.meta b/AlienSurvival/Assets/Scripts/Utils/Singleton.cs.meta
new file mode 100644
index 0000000..ff0aab9
--- /dev/null
+++ b/AlienSurvival/Assets/Scripts/Utils/Singleton.cs.meta
@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 1b80a3ccdebef4b4db85130a4bde2d00
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 
diff --git a/AlienSurvival/Assets/Scripts/Utils/TinyCountDown.cs b/AlienSurvival/Assets/Scripts/Utils/TinyCountDown.cs
new file mode 100644
index 0000000..dbeae55
--- /dev/null
+++ b/AlienSurvival/Assets/Scripts/Utils/TinyCountDown.cs
@@ -0,0 +1,48 @@
+using System.Linq;
+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+
+public class TinyCountDown :Singleton<TinyCountDown>
+{
+
+	private Dictionary<string, float> m_CountDown = new Dictionary<string, float>();
+	public TinyCountDown()
+	{
+	}
+
+	public void Set(string key, float time)
+	{
+		if (!m_CountDown.ContainsKey(key))
+		{
+			m_CountDown.Add(key, time);
+		}
+		else
+		{
+			m_CountDown[key] = time;
+		}
+	}
+
+	public float Get(string key)
+	{
+		if (m_CountDown.ContainsKey(key))
+		{
+			return m_CountDown[key];
+		}
+		return 0;
+	}
+
+	public void Update()
+	{
+		List<string> keys = new List<string>(m_CountDown.Keys);
+		foreach (var key in keys)
+		{
+			m_CountDown[key] -= Time.deltaTime;
+			if(m_CountDown[key] <= 0)
+			{
+				m_CountDown.Remove(key);
+			}
+		}
+
+	}
+}
diff --git a/AlienSurvival/Assets/Scripts/Utils/TinyCountDown.cs.meta b/AlienSurvival/Assets/Scripts/Utils/TinyCountDown.cs.meta
new file mode 100644
index 0000000..c9f5545
--- /dev/null
+++ b/AlienSurvival/Assets/Scripts/Utils/TinyCountDown.cs.meta
@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: de0d1a4a5baf48a4083e5d7f457ea8b0
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: