Update ItemStac Serialization, add new 1.20.5+ default schematic

src/main/java/com/craftaro/skyblock/config/FileManager.java

@@ -1,5 +1,6 @@
 package com.craftaro.skyblock.config;
 
+import com.craftaro.core.compatibility.ServerVersion;
 import com.craftaro.skyblock.SkyBlock;
 import com.craftaro.skyblock.island.IslandWorld;
 import com.google.common.io.ByteStreams;
@@ -93,6 +94,16 @@ public class FileManager {
 
             if (fileName.equals("structures/default.structure")) {
                 configFile.delete();
+                if (ServerVersion.isServerVersionAtLeast(ServerVersion.V1_20_5)) {
+                    //Copy default_1_20_5.structure instead of default.structure
+                    try (InputStream is = this.plugin.getResource("structures/default_1_20_5.structure"); OutputStream os = Files.newOutputStream(configFile.toPath())) {
+                        if (is != null) {
+                            ByteStreams.copy(is, os);
+                        }
+                    } catch (IOException ex) {
+                        ex.printStackTrace();
+                    }
+                } else {
                     try {
                         configFile.createNewFile();
                     } catch (IOException ex) {
@@ -105,6 +116,7 @@ public class FileManager {
                     } catch (IOException ex) {
                         ex.printStackTrace();
                     }
+                }
                 continue;
             }
 

src/main/java/com/craftaro/skyblock/utils/item/ItemStackUtil.java

@@ -16,7 +16,9 @@ import java.io.DataInputStream;
 import java.io.DataOutput;
 import java.io.DataOutputStream;
 import java.lang.reflect.Constructor;
+import java.lang.reflect.Method;
 import java.math.BigInteger;
+import java.util.Arrays;
 
 public class ItemStackUtil {
     private static final boolean isAbove1_16_R1 = MajorServerVersion.isServerVersionAtLeast(MajorServerVersion.V1_16)
@@ -28,6 +30,11 @@ public class ItemStackUtil {
 
         ItemStack itemStack = null;
 
+        if (ServerVersion.isServerVersionAtLeast(ServerVersion.V1_20_5)) {
+            //We need net.minecraft.nbt.NbtIo class in this version
+            byte[] bytes = new BigInteger(data, 32).toByteArray();
+            itemStack = ItemStack.deserializeBytes(bytes);
+        } else {
             try {
                 Class<?> NBTTagCompoundClass = ClassMapping.NBT_TAG_COMPOUND.getClazz();
                 Class<?> NMSItemStackClass = ClassMapping.ITEM_STACK.getClazz();
@@ -64,11 +71,18 @@ public class ItemStackUtil {
             } catch (Exception ex) {
                 ex.printStackTrace();
             }
+        }
 
         return itemStack;
     }
 
     public static String serializeItemStack(ItemStack item) {
+        if (ServerVersion.isServerVersionAtLeast(ServerVersion.V1_20_5)) {
+            //We need net.minecraft.nbt.NbtIo class in this version
+            byte[] bytes = item.serializeAsBytes();
+            return new BigInteger(bytes).toString(32);
+        }
+
         ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
         DataOutputStream dataOutput = new DataOutputStream(outputStream);