Add command stack, Move butcher to entities category

src/main/java/exopandora/worldhandler/util/NBTHelper.java

@@ -0,0 +1,117 @@
+package exopandora.worldhandler.util;
+
+import java.util.Arrays;
+import java.util.List;
+
+import exopandora.worldhandler.builder.INBTWritable;
+import exopandora.worldhandler.builder.component.IBuilderComponent;
+import exopandora.worldhandler.builder.component.impl.EntityNBT;
+import net.minecraft.block.BlockState;
+import net.minecraft.block.Blocks;
+import net.minecraft.nbt.CompoundNBT;
+import net.minecraft.nbt.DoubleNBT;
+import net.minecraft.nbt.INBT;
+import net.minecraft.nbt.ListNBT;
+import net.minecraft.nbt.NBTUtil;
+import net.minecraft.nbt.StringNBT;
+import net.minecraft.util.ResourceLocation;
+import net.minecraftforge.api.distmarker.Dist;
+import net.minecraftforge.api.distmarker.OnlyIn;
+
+@OnlyIn(Dist.CLIENT)
+public class NBTHelper
+{
+	public static INBT serialize(BlockState blockState)
+	{
+		return blockState != null ? NBTUtil.writeBlockState(blockState) : null;
+	}
+	
+	public static INBT serialize(double[] vector)
+	{
+		if(vector.length == 3 && (vector[0] != 0D || vector[1] != 0D || vector[2] != 0D))
+		{
+			ListNBT list = new ListNBT();
+			
+			list.add(DoubleNBT.valueOf(vector[0]));
+			list.add(DoubleNBT.valueOf(vector[1]));
+			list.add(DoubleNBT.valueOf(vector[2]));
+			
+			return list;
+		}
+		
+		return null;
+	}
+	
+	public static INBT serialize(ResourceLocation resource)
+	{
+		if(resource != null)
+		{
+			return StringNBT.valueOf(resource.toString());
+		}
+		
+		return null;
+	}
+	
+	public static INBT serialize(ResourceLocation[] itemArray)
+	{
+		if(Arrays.stream(itemArray).allMatch(resource -> Blocks.AIR.getRegistryName().equals(resource)))
+		{
+			return null;
+		}
+		
+		ListNBT list = new ListNBT();
+		
+		for(ResourceLocation item : itemArray)
+		{
+			CompoundNBT compound = new CompoundNBT();
+			compound.putString("id", item.toString());
+			compound.putInt("Count", 1);
+			list.add(compound);
+		}
+		
+		return list;
+	}
+	
+	public static INBT serialize(List<EntityNBT> entities)
+	{
+		ListNBT list = new ListNBT();
+		
+		for(EntityNBT entity : entities)
+		{
+			INBT nbt = entity.serialize();
+			
+			if(nbt != null)
+			{
+				list.add(nbt);
+			}
+		}
+		
+		if(list.isEmpty())
+		{
+			return null;
+		}
+		
+		return list;
+	}
+	
+	public static void append(CompoundNBT compound, String tag, INBTWritable writable)
+	{
+		NBTHelper.append(compound, tag, writable.serialize());
+	}
+	
+	public static void append(CompoundNBT compound, IBuilderComponent component)
+	{
+		NBTHelper.append(compound, component.getTag(), component.serialize());
+	}
+	
+	public static void append(CompoundNBT compound, String tag, INBT nbt)
+	{
+		if(nbt != null)
+		{
+			if(!compound.contains(tag))
+			{
+				compound.put(tag, nbt);
+			}
+		}
+	}
+}