20w49a

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

@@ -108,7 +108,7 @@ public class BlockValue extends Value
     {
         if (data != null)
         {
-            if (data.isEmpty())
+            if (data.method_33133())
                 return null;
             return data;
         }

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

@@ -1295,7 +1295,7 @@ public class EntityValue extends Value
             GameMode toSet = v instanceof NumericValue ?
                     GameMode.byId(((NumericValue) v).getInt(), null) :
                     GameMode.byName(v.getString().toLowerCase(Locale.ROOT), null);
-            if (toSet != null) ((ServerPlayerEntity) e).setGameMode(toSet);
+            if (toSet != null) ((ServerPlayerEntity) e).changeGameMode(toSet);
         });
 
         put("jumping",(e,v)->{

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

@@ -392,7 +392,7 @@ public class NBTSerializableValue extends Value implements ContainerValueInterfa
     {
         Tag tag = getTag();
         if (tag instanceof CompoundTag)
-            return !((CompoundTag) tag).isEmpty();
+            return !((CompoundTag) tag).method_33133();
         if (tag instanceof AbstractListTag)
             return ((AbstractListTag) tag).isEmpty();
         if (tag instanceof AbstractNumberTag)