update getAssetIndex() (#726)

* update

* fix

Author: zkitefly

FCLCore/src/main/java/com/tungsten/fclcore/game/Version.java

@@ -224,7 +224,42 @@ public DownloadInfo getDownloadInfo() {
 
     public AssetIndexInfo getAssetIndex() {
         String assetsId = assets == null ? "legacy" : assets;
-        return assetIndex == null ? new AssetIndexInfo(assetsId, Constants.DEFAULT_INDEX_URL + assetsId + ".json") : assetIndex;
+
+        if (assetIndex == null) {
+            String hash;
+            switch (assetsId) {
+                case "1.8":
+                    hash = "f6ad102bcaa53b1a58358f16e376d548d44933ec";
+                    break;
+                case "14w31a":
+                    hash = "10a2a0e75b03cfb5a7196abbdf43b54f7fa61deb";
+                    break;
+                case "14w25a":
+                    hash = "32ff354a3be1c4dd83027111e6d79ee4d701d2c0";
+                    break;
+                case "1.7.4":
+                    hash = "545510a60f526b9aa8a38f9c0bc7a74235d21675";
+                    break;
+                case "1.7.10":
+                    hash = "1863782e33ce7b584fc45b037325a1964e095d3e";
+                    break;
+                case "1.7.3":
+                    hash = "f6cf726f4747128d13887010c2cbc44ba83504d9";
+                    break;
+                case "pre-1.6":
+                    hash = "3d8e55480977e32acd9844e545177e69a52f594b";
+                    break;
+                case "legacy":
+                default:
+                    assetsId = "legacy";
+                    hash = "770572e819335b6c0a053f8378ad88eda189fc14";
+            }
+
+            String url = Constants.DEFAULT_INDEX_URL + hash + "/" + assetsId + ".json";
+            return new AssetIndexInfo(assetsId, url);
+        } else {
+            return assetIndex;
+        }
     }
 
     public boolean appliesToCurrentEnvironment() {

FCLCore/src/main/java/com/tungsten/fclcore/util/Constants.java

@@ -21,6 +21,6 @@ public class Constants {
 
     public static final String DEFAULT_LIBRARY_URL = "https://libraries.minecraft.net/";
     public static final String DEFAULT_VERSION_DOWNLOAD_URL = "https://bmclapi2.bangbang93.com/versions/";
-    public static final String DEFAULT_INDEX_URL = "https://launchermeta.mojang.com/mc-staging/assets/legacy/c0fd82e8ce9fbc93119e40d96d5a4e62cfa3f729/";
+    public static final String DEFAULT_INDEX_URL = "https://launchermeta.mojang.com/v1/packages/";
 
 }