hash code and stump of map

src/main/java/carpet/script/value/BlockValue.java

@@ -13,6 +13,7 @@ import net.minecraft.item.ItemPlacementContext;
 import net.minecraft.item.ItemStack;
 import net.minecraft.nbt.CompoundTag;
 import net.minecraft.server.world.ServerWorld;
+import net.minecraft.util.GlobalPos;
 import net.minecraft.util.Hand;
 import net.minecraft.util.hit.BlockHitResult;
 import net.minecraft.util.math.BlockPos;
@@ -254,6 +255,14 @@ public class BlockValue extends Value
         return new BlockValue(blockState, world, pos);
     }
 
+    @Override
+    public int hashCode()
+    {
+        if (world != null && pos != null )
+            return GlobalPos.create(world.getDimension().getType(), pos).hashCode();
+        return ("b"+getString()).hashCode();
+    }
+
     public BlockPos getPos()
     {
         return pos;