cache avatar & change url

Assets/Scripts/MyCard.cs

 using System;
+using System.Collections.Generic;
 using UnityEngine;
 using UnityEngine.Networking;
 
@@ -6,10 +7,23 @@ namespace DefaultNamespace
 {
     public class MyCard
     {
+        private static Dictionary<string, Texture2D> cachedAvatars = new Dictionary<string, Texture2D>();
+
         public static void LoadAvatar(string username, Action<Texture2D> callback)
         {
+            if (cachedAvatars.ContainsKey(username))
+            {
+                var avatar = cachedAvatars[username];
+                if (avatar != null)
+                {
+                    callback(cachedAvatars[username]);
+                }
+                return;
+            }
+            cachedAvatars.Add(username, null);
+
             var request =
-                UnityWebRequestTexture.GetTexture($"https://sapi.moecube.com:444/accounts/users/{username}.png");
+                UnityWebRequestTexture.GetTexture($"https://sapi.moecube.com:444/avatar/avatar/{username}/100/ygopro2.png");
             var operation = request.SendWebRequest();
             operation.completed += _ =>
             {
@@ -19,7 +33,9 @@ namespace DefaultNamespace
                     return;
                 }
 
-                callback(((DownloadHandlerTexture) request.downloadHandler).texture);
+                var avatar = ((DownloadHandlerTexture)request.downloadHandler).texture;
+                cachedAvatars[username] = avatar;
+                callback(avatar);
             };
         }
     }