From cdfae54ab9330034f5284064842acc8c6314cc16 Mon Sep 17 00:00:00 2001
From: huanghongxun <huanghongxun2008@126.com>
Date: Tue, 22 Jan 2019 16:11:31 +0800
Subject: [PATCH] Fixed costly time consumption reading level.dat. Mentioned in
 #512

---
 HMCLCore/src/main/java/org/jackhuang/hmcl/game/World.java | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/HMCLCore/src/main/java/org/jackhuang/hmcl/game/World.java b/HMCLCore/src/main/java/org/jackhuang/hmcl/game/World.java
index 67731635d..593842fde 100644
--- a/HMCLCore/src/main/java/org/jackhuang/hmcl/game/World.java
+++ b/HMCLCore/src/main/java/org/jackhuang/hmcl/game/World.java
@@ -28,6 +28,7 @@ import org.jackhuang.hmcl.util.io.FileUtils;
 import org.jackhuang.hmcl.util.io.Unzipper;
 import org.jackhuang.hmcl.util.io.Zipper;
 
+import java.io.BufferedInputStream;
 import java.io.IOException;
 import java.io.InputStream;
 import java.io.OutputStream;
@@ -194,7 +195,7 @@ public class World {
     }
 
     private static CompoundTag parseLevelDat(Path path) throws IOException {
-        try (InputStream is = new GZIPInputStream(Files.newInputStream(path))) {
+        try (InputStream is = new BufferedInputStream(new GZIPInputStream(Files.newInputStream(path)))) {
             Tag nbt = NBTIO.readTag(is);
             if (nbt instanceof CompoundTag)
                 return (CompoundTag) nbt;