Merge branch 'master' into 1.17

# Conflicts:
#	gradle.properties
#	src/main/java/carpet/script/value/ValueConversions.java

docs/scarpet/Full.md

@@ -3429,10 +3429,10 @@ If called with `false` value, it will disable AI in the mob. `true` will enable
 Sets if the entity obeys any collisions, including collisions with the terrain and basic physics. Not affecting 
 players, since they are controlled client side.
 
-### `modify(e, 'effect', name?, duration?, amplifier?, show_particles?, show_icon?)`
+### `modify(e, 'effect', name?, duration?, amplifier?, show_particles?, show_icon?, ambient?)`
 
-Applies status effect to the living entity. Takes several optional parameters, which default to `0`, `true` 
-and `true`. If no duration is specified, or if it's null or 0, the effect is removed. If name is not specified,
+Applies status effect to the living entity. Takes several optional parameters, which default to `0`, `true`, 
+`true` and `false`. If no duration is specified, or if it's null or 0, the effect is removed. If name is not specified,
 it clears all effects.
 
 ### `modify(e, 'home', null), modify(e, 'home', block, distance?), modify(e, 'home', x, y, z, distance?)`
@@ -4432,6 +4432,12 @@ Consult section about container operations in `Expression` to learn about possib
 Excapes all the special characters in the string or nbt tag and returns a string that can be stored in nbt directly 
 as a string value.
 
+### `tag_matches(daddy_tag, baby_tag, match_lists?)`
+
+Utility returning `true` if `baby_tag` is fully contained in `daddy_tag`. Anything matches `null` baby tag, and
+Nothing is contained in a `null` daddy tag. If `match_lists` is specified and `false`, content of nested lists is ignored. 
+Default behaviour is to match them.
+
 ### `parse_nbt(tag)`
 
 Converts NBT tag to a scarpet value, which you can navigate through much better.
@@ -4514,6 +4520,18 @@ Example usages:
   // not a problem in apps
 </pre>
 
+### `display_title(players, type, title?, fadeInTicks?, stayTicks?, fadeOutTicks),`
+
+Sends the player (or players if `players` is a list) a title of a specific type, with optionally some times.
+ * `players` is either an online player or a list of players. When sending a single player, it will throw if the player is invalid or offline.
+ * `type` is either `'title'`, `'subtitle'`, `actionbar` or `clear`.
+   Note: `subtitle` will only be displayed if there is a title being displayed (can be an empty one)
+ * `title` is what title to send to the player. It is required except for `clear` type. Can be a text formatted using `format()`
+ * `...Ticks` are the number of ticks the title will stay in that state.
+   If not specified, it will use current defaults (those defaults may have changed from a previous `/title times` execution).
+   Executing with those will set the times to the specified ones.
+   Note that `actionbar` type doesn't support changing times (vanilla bug, see [MC-106167](https://bugs.mojang.com/browse/MC-106167)).
+
 ### `logger(msg), logger(type, msg)`
 
 Prints the message to system logs, and not to chat. By default prints an info, unless you specify otherwise in the `type` parameter.
@@ -4738,7 +4756,7 @@ Available options in the scarpet app space:
   * `world_seed` - a numeric seed of the world
   * `world_path` - full path to the world saves folder
   * `world_folder` - name of the direct folder in the saves that holds world files
-  * `world_carpet_rules` - returns all Carpet rules in a map form (`rule`->`value`). Includes rules from extensions with their namespace (`namespace:rule`->`value`). You can later listen to rule changes with the `on_carpet_rule_change(rule, newValue)` event.
+  * `world_carpet_rules` - returns all Carpet rules in a map form (`rule`->`value`). Note that the values are always returned as strings, so you can't do boolean comparisons directly. Includes rules from extensions with their namespace (`namespace:rule`->`value`). You can later listen to rule changes with the `on_carpet_rule_changes(rule, newValue)` event.
  
  Relevant gameplay related properties
   * `game_difficulty` - current difficulty of the game: `'peacefu'`, `'easy'`, `'normal'`, or `'hard'`

docs/scarpet/api/Auxiliary.md

@@ -163,6 +163,12 @@ Consult section about container operations in `Expression` to learn about possib
 Excapes all the special characters in the string or nbt tag and returns a string that can be stored in nbt directly 
 as a string value.
 
+### `tag_matches(daddy_tag, baby_tag, match_lists?)`
+
+Utility returning `true` if `baby_tag` is fully contained in `daddy_tag`. Anything matches `null` baby tag, and
+Nothing is contained in a `null` daddy tag. If `match_lists` is specified and `false`, content of nested lists is ignored. 
+Default behaviour is to match them.
+
 ### `parse_nbt(tag)`
 
 Converts NBT tag to a scarpet value, which you can navigate through much better.
@@ -245,6 +251,18 @@ Example usages:
   // not a problem in apps
 </pre>
 
+### `display_title(players, type, title?, fadeInTicks?, stayTicks?, fadeOutTicks),`
+
+Sends the player (or players if `players` is a list) a title of a specific type, with optionally some times.
+ * `players` is either an online player or a list of players. When sending a single player, it will throw if the player is invalid or offline.
+ * `type` is either `'title'`, `'subtitle'`, `actionbar` or `clear`.
+   Note: `subtitle` will only be displayed if there is a title being displayed (can be an empty one)
+ * `title` is what title to send to the player. It is required except for `clear` type. Can be a text formatted using `format()`
+ * `...Ticks` are the number of ticks the title will stay in that state.
+   If not specified, it will use current defaults (those defaults may have changed from a previous `/title times` execution).
+   Executing with those will set the times to the specified ones.
+   Note that `actionbar` type doesn't support changing times (vanilla bug, see [MC-106167](https://bugs.mojang.com/browse/MC-106167)).
+
 ### `logger(msg), logger(type, msg)`
 
 Prints the message to system logs, and not to chat. By default prints an info, unless you specify otherwise in the `type` parameter.
@@ -469,7 +487,7 @@ Available options in the scarpet app space:
   * `world_seed` - a numeric seed of the world
   * `world_path` - full path to the world saves folder
   * `world_folder` - name of the direct folder in the saves that holds world files
-  * `world_carpet_rules` - returns all Carpet rules in a map form (`rule`->`value`). Includes rules from extensions with their namespace (`namespace:rule`->`value`). You can later listen to rule changes with the `on_carpet_rule_change(rule, newValue)` event.
+  * `world_carpet_rules` - returns all Carpet rules in a map form (`rule`->`value`). Note that the values are always returned as strings, so you can't do boolean comparisons directly. Includes rules from extensions with their namespace (`namespace:rule`->`value`). You can later listen to rule changes with the `on_carpet_rule_changes(rule, newValue)` event.
  
  Relevant gameplay related properties
   * `game_difficulty` - current difficulty of the game: `'peacefu'`, `'easy'`, `'normal'`, or `'hard'`

docs/scarpet/api/Entities.md

@@ -641,10 +641,10 @@ If called with `false` value, it will disable AI in the mob. `true` will enable
 Sets if the entity obeys any collisions, including collisions with the terrain and basic physics. Not affecting 
 players, since they are controlled client side.
 
-### `modify(e, 'effect', name?, duration?, amplifier?, show_particles?, show_icon?)`
+### `modify(e, 'effect', name?, duration?, amplifier?, show_particles?, show_icon?, ambient?)`
 
-Applies status effect to the living entity. Takes several optional parameters, which default to `0`, `true` 
-and `true`. If no duration is specified, or if it's null or 0, the effect is removed. If name is not specified,
+Applies status effect to the living entity. Takes several optional parameters, which default to `0`, `true`, 
+`true` and `false`. If no duration is specified, or if it's null or 0, the effect is removed. If name is not specified,
 it clears all effects.
 
 ### `modify(e, 'home', null), modify(e, 'home', block, distance?), modify(e, 'home', x, y, z, distance?)`

docs/scarpet/resources/editors/idea/2.txt

@@ -19,11 +19,14 @@ create_marker
 current_dimension
 custom_dimension
 day_time
+delete_file
 destroy
 diamond
+display_title
 draw_shape
 drop_item
 emitted_light
+encode_nbt
 entity_area
 entity_event
 entity_id
@@ -61,6 +64,7 @@ modify
 nbt
 neighbours
 opacity
+parse_nbt
 particle
 particle_line
 particle_rect
@@ -86,11 +90,13 @@ scoreboard
 scoreboard_add
 scoreboard_remove
 scoreboard_display
+tag_matches
 team_add
 team_list
 team_remove
 team_leave
 team_property
+read_file
 see_sky
 set
 set_biome
@@ -118,4 +124,5 @@ update
 view_distance
 volume
 without_updates
-world_time
+world_time
+write_file

docs/scarpet/resources/editors/npp/scarpet.xml

@@ -58,6 +58,8 @@
                 structure_eligibility structures structure_references set_structure reset_chunk reload_chunk custom_dimension
                 add_chunk_ticket
 
+                display_title
+
                 scoreboard scoreboard_add scoreboard_remove scoreboard_display
 
                 team_add team_list team_remove team_leave team_property
@@ -78,7 +80,8 @@
 
                 plop harvest destroy schedule nbt draw_shape create_marker remove_all_markers
 
-                load_app_data store_app_data escape_nbt statistic
+                load_app_data store_app_data read_file write_file delete_file
+                escape_nbt parse_nbt encode_nbt tag_matches statistic
             </Keywords>
             <Keywords name="Keywords3">euler pi null true false</Keywords>
             <Keywords name="Keywords4">x y z p</Keywords>

src/main/java/carpet/fakes/BlockPredicateInterface.java

@@ -0,0 +1,17 @@
+package carpet.fakes;
+
+import carpet.script.value.Value;
+import net.minecraft.block.Block;
+import net.minecraft.block.BlockState;
+import net.minecraft.nbt.CompoundTag;
+import net.minecraft.tag.Tag;
+
+import java.util.Map;
+
+public interface BlockPredicateInterface
+{
+    BlockState getCMBlockState();
+    Tag<Block> getCMBlockTag();
+    Map<Value, Value> getCMProperties();
+    CompoundTag getCMDataTag();
+}

src/main/java/carpet/mixins/StatePredicate_scarpetMixin.java

@@ -0,0 +1,57 @@
+package carpet.mixins;
+
+import carpet.fakes.BlockPredicateInterface;
+import carpet.script.value.StringValue;
+import carpet.script.value.Value;
+import carpet.script.value.ValueConversions;
+import net.minecraft.block.Block;
+import net.minecraft.block.BlockState;
+import net.minecraft.nbt.CompoundTag;
+import net.minecraft.state.property.Property;
+import net.minecraft.tag.Tag;
+import org.spongepowered.asm.mixin.Final;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.Shadow;
+
+import java.util.Map;
+import java.util.Set;
+import java.util.stream.Collectors;
+
+@Mixin(targets = "net.minecraft.command.argument.BlockPredicateArgumentType$StatePredicate")
+public class StatePredicate_scarpetMixin implements BlockPredicateInterface
+{
+
+    @Shadow @Final private BlockState state;
+
+    @Shadow @Final /*@Nullable*/ private CompoundTag nbt;
+
+    @Shadow @Final private Set<Property<?>> properties;
+
+    @Override
+    public BlockState getCMBlockState()
+    {
+        return state;
+    }
+
+    @Override
+    public Tag<Block> getCMBlockTag()
+    {
+        return null;
+    }
+
+    @Override
+    public Map<Value, Value> getCMProperties()
+    {
+        return properties.stream().collect(Collectors.toMap(
+                p -> StringValue.of(p.getName()),
+                p -> ValueConversions.fromProperty(state, p),
+                (a, b) -> b
+        ));
+    }
+
+    @Override
+    public CompoundTag getCMDataTag()
+    {
+        return nbt;
+    }
+}

src/main/java/carpet/mixins/TagPredicate_scarpetMixin.java

@@ -0,0 +1,52 @@
+package carpet.mixins;
+
+import carpet.fakes.BlockPredicateInterface;
+import carpet.script.value.StringValue;
+import carpet.script.value.Value;
+import net.minecraft.block.Block;
+import net.minecraft.block.BlockState;
+import net.minecraft.nbt.CompoundTag;
+import net.minecraft.tag.Tag;
+import org.spongepowered.asm.mixin.Final;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.Shadow;
+
+import java.util.Map;
+import java.util.stream.Collectors;
+
+@Mixin(targets = "net.minecraft.command.argument.BlockPredicateArgumentType$TagPredicate")
+public class TagPredicate_scarpetMixin implements BlockPredicateInterface
+{
+    @Shadow @Final private Tag<Block> tag;
+
+    @Shadow @Final private Map<String, String> properties;
+
+    @Shadow @Final /*@Nullable*/ private CompoundTag nbt;
+
+    @Override
+    public BlockState getCMBlockState()
+    {
+        return null;
+    }
+
+    @Override
+    public Tag<Block> getCMBlockTag()
+    {
+        return tag;
+    }
+
+    @Override
+    public Map<Value, Value> getCMProperties()
+    {
+        return properties.entrySet().stream().collect(Collectors.toMap(
+                e -> new StringValue(e.getKey()),
+                e -> new StringValue(e.getValue())
+        ));
+    }
+
+    @Override
+    public CompoundTag getCMDataTag()
+    {
+        return nbt;
+    }
+}

src/main/java/carpet/script/api/Auxiliary.java

@@ -40,13 +40,17 @@ import net.minecraft.entity.EquipmentSlot;
 import net.minecraft.entity.decoration.ArmorStandEntity;
 import net.minecraft.entity.player.PlayerEntity;
 import net.minecraft.item.ItemStack;
+import net.minecraft.nbt.NbtHelper;
 import net.minecraft.nbt.StringTag;
 import net.minecraft.nbt.Tag;
 import net.minecraft.network.packet.s2c.play.PlaySoundIdS2CPacket;
+import net.minecraft.network.packet.s2c.play.TitleS2CPacket;
+import net.minecraft.network.packet.s2c.play.TitleS2CPacket.Action;
 import net.minecraft.particle.ParticleEffect;
 import net.minecraft.server.MinecraftServer;
 import net.minecraft.server.command.CommandOutput;
 import net.minecraft.server.command.ServerCommandSource;
+import net.minecraft.server.network.ServerPlayNetworkHandler;
 import net.minecraft.server.network.ServerPlayerEntity;
 import net.minecraft.server.world.ServerWorld;
 import net.minecraft.sound.SoundCategory;
@@ -73,7 +77,9 @@ import java.util.HashMap;
 import java.util.List;
 import java.util.Locale;
 import java.util.Map;
+import java.util.concurrent.atomic.AtomicInteger;
 import java.util.stream.Collectors;
+import java.util.stream.Stream;
 
 import static java.lang.Math.max;
 import static java.lang.Math.min;
@@ -400,13 +406,23 @@ public class Auxiliary {
                 Value parsed = ((NBTSerializableValue) v).toValue();
                 return (cc, tt) -> parsed;
             }
-            NBTSerializableValue ret = NBTSerializableValue.parseString(v.getString());
+            NBTSerializableValue ret = NBTSerializableValue.parseString(v.getString(), false);
             if (ret == null)
                 return LazyValue.NULL;
             Value parsed = ret.toValue();
             return (cc, tt) -> parsed;
         });
 
+        expression.addFunction("tag_matches", (lv) -> {
+            int numParam = lv.size();
+            if (numParam != 2 && numParam != 3) throw new InternalExpressionException("'tag_matches' requires 2 or 3 arguments");
+            if (lv.get(1).isNull()) return Value.TRUE;
+            if (lv.get(0).isNull()) return Value.FALSE;
+            Tag source = ((NBTSerializableValue)(NBTSerializableValue.fromValue(lv.get(0)))).getTag();
+            Tag match = ((NBTSerializableValue)(NBTSerializableValue.fromValue(lv.get(1)))).getTag();
+            return new NumericValue(NbtHelper.matches(match, source, numParam == 2 || lv.get(2).getBoolean()));
+        });
+
         expression.addLazyFunction("encode_nbt", -1, (c, t, lv) -> {
             int argSize = lv.size();
             if (argSize==0 || argSize > 2) throw new InternalExpressionException("'encode_nbt' requires 1 or 2 parameters");
@@ -434,6 +450,7 @@ public class Auxiliary {
             if (lv.size() == 2)
             {
                 ServerPlayerEntity player = EntityValue.getPlayerByValue(s.getMinecraftServer(), res);
+                if (player == null) return LazyValue.NULL;
                 s = player.getCommandSource();
                 res = lv.get(1).evalValue(c);
             }
@@ -455,6 +472,66 @@ public class Auxiliary {
             Value finalRes = res;
             return (_c, _t) -> finalRes; // pass through for variables
         });
+        expression.addLazyFunction("display_title", -1, (c, t, lv) -> {
+            if (lv.size() < 2) throw new InternalExpressionException("'display_title' needs at least a target, type and message, and optionally times");
+            Value pVal = lv.get(0).evalValue(c);
+            if (!(pVal instanceof ListValue)) pVal = ListValue.of(pVal);
+            MinecraftServer server = ((CarpetContext)c).s.getMinecraftServer();
+            Stream<ServerPlayerEntity> targets = ((ListValue) pVal).getItems().stream().map(v ->
+            {
+                ServerPlayerEntity player = EntityValue.getPlayerByValue(server, v);
+                if (player == null) throw new InternalExpressionException("'display_title' requires a valid online player or a list of players as first argument. "+v.getString()+" is not a player.");
+                return player;
+            });
+            TitleS2CPacket.Action action;
+            switch (lv.get(1).evalValue(c).getString().toLowerCase(Locale.ROOT))
+            {
+                case "title":
+                    action = Action.TITLE;
+                    break;
+                case "subtitle":
+                    action = Action.SUBTITLE;
+                    break;
+                case "actionbar":
+                    action = Action.ACTIONBAR;
+                    break;
+                case "clear":
+                    action = Action.CLEAR;
+                    break;
+                default:
+                    throw new InternalExpressionException("'display_title' requires 'title', 'subtitle', 'actionbar' or 'clear' as second argument");
+            }
+            if (action != Action.CLEAR && lv.size() < 3)
+                throw new InternalExpressionException("Third argument of 'display_title' must be present except for 'clear' type");
+            Text title = null;
+            if (lv.size() > 2)
+            {
+            	pVal = lv.get(2).evalValue(c);
+                if (pVal instanceof FormattedTextValue)
+                    title = ((FormattedTextValue) pVal).getText();
+                else
+                    title = Text.of(pVal.getString());
+            }
+            TitleS2CPacket timesPacket;
+            if (lv.size() > 3)
+            {
+                int in = NumericValue.asNumber(lv.get(3).evalValue(c),"fade in for display_title" ).getInt();
+                int stay = NumericValue.asNumber(lv.get(4).evalValue(c),"stay for display_title" ).getInt();
+                int out = NumericValue.asNumber(lv.get(5).evalValue(c),"fade out for display_title" ).getInt();
+                timesPacket = new TitleS2CPacket(Action.TIMES, null, in, stay, out);
+            }
+            else timesPacket = null;
+
+            TitleS2CPacket packet = new TitleS2CPacket(action, title);
+            AtomicInteger total = new AtomicInteger(0);
+            targets.forEach(p -> {
+                if (timesPacket != null) p.networkHandler.sendPacket(timesPacket);
+                p.networkHandler.sendPacket(packet);
+                total.getAndIncrement();
+            });
+            Value ret = NumericValue.of(total.get());
+            return (cc, tt) -> ret;
+        });
 
         expression.addLazyFunction("format", -1, (c, t, lv) -> {
             if (lv.size() == 0 ) throw new InternalExpressionException("'format' requires at least one component");

src/main/java/carpet/script/api/Entities.java

@@ -137,7 +137,7 @@ public class Entities {
             {
                 Value nbt = lv.get(position.offset).evalValue(c);
                 NBTSerializableValue v = (nbt instanceof NBTSerializableValue) ? (NBTSerializableValue) nbt
-                        : NBTSerializableValue.parseString(nbt.getString());
+                        : NBTSerializableValue.parseString(nbt.getString(), true);
                 hasTag = true;
                 tag = v.getCompoundTag();
 

src/main/java/carpet/script/api/WorldAccess.java

@@ -808,9 +808,7 @@ public class WorldAccess {
                     tag = ((NBTSerializableValue) tagValue).getCompoundTag();
                 else
                 {
-                    NBTSerializableValue readTag = NBTSerializableValue.parseString(tagValue.getString());
-                    if (readTag == null)
-                        throw new InternalExpressionException("Incorrect tag: "+tagValue.getString());
+                    NBTSerializableValue readTag = NBTSerializableValue.parseString(tagValue.getString(), true);
                     tag = readTag.getCompoundTag();
                 }
             }

src/main/java/carpet/script/command/CommandArgument.java

@@ -36,6 +36,7 @@ import net.minecraft.advancement.Advancement;
 import net.minecraft.command.CommandSource;
 import net.minecraft.command.argument.AngleArgumentType;
 import net.minecraft.command.argument.BlockPosArgumentType;
+import net.minecraft.command.argument.BlockPredicateArgumentType;
 import net.minecraft.command.argument.BlockStateArgument;
 import net.minecraft.command.argument.BlockStateArgumentType;
 import net.minecraft.command.argument.ColorArgumentType;
@@ -126,6 +127,9 @@ public abstract class CommandArgument
                     },
                     false
             ),
+            new VanillaUnconfigurableArgument( "blockpredicate", BlockPredicateArgumentType::blockPredicate,
+                    (c, p) -> ValueConversions.ofBlockPredicate(c.getSource().getMinecraftServer().getTagManager(), BlockPredicateArgumentType.getBlockPredicate(c, p)), false
+            ),
             // block_predicate todo - not sure about the returned format. Needs to match block tags used in the API (future)
             new VanillaUnconfigurableArgument("teamcolor", ColorArgumentType::color,
                     (c, p) -> {

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

@@ -1271,7 +1271,10 @@ public class EntityValue extends Value
                     boolean showIcon = true;
                     if (lv.size() > 4)
                         showIcon = lv.get(4).getBoolean();
-                    le.addStatusEffect(new StatusEffectInstance(effect, duration, amplifier, showParticles, showIcon));
+                    boolean ambient = false;
+                    if (lv.size() > 5)
+                        showIcon = lv.get(5).getBoolean();
+                    le.addStatusEffect(new StatusEffectInstance(effect, duration, amplifier, ambient, showParticles, showIcon));
                     return;
                 }
             }
@@ -1284,7 +1287,7 @@ public class EntityValue extends Value
                 le.removeStatusEffect(effect);
                 return;
             }
-            throw new InternalExpressionException("'effect' needs either no arguments (clear) or effect name, duration, and optional amplifier, show particles and show icon");
+            throw new InternalExpressionException("'effect' needs either no arguments (clear) or effect name, duration, and optional amplifier, show particles, show icon and ambient");
         });
 
         put("gamemode", (e,v)->{

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

@@ -104,7 +104,7 @@ public class NBTSerializableValue extends Value implements ContainerValueInterfa
         return id.toString();
     }
 
-    public static NBTSerializableValue parseString(String nbtString)
+    public static NBTSerializableValue parseString(String nbtString, boolean fail)
     {
         Tag tag;
         try
@@ -113,7 +113,8 @@ public class NBTSerializableValue extends Value implements ContainerValueInterfa
         }
         catch (CommandSyntaxException e)
         {
-           throw new InternalExpressionException("Incorrect NBT tag: nbtString");
+            if (fail) throw new InternalExpressionException("Incorrect NBT tag: "+ nbtString);
+            return null;
         }
         NBTSerializableValue value = new NBTSerializableValue(tag);
         value.nbtString = null;
@@ -331,7 +332,7 @@ public class NBTSerializableValue extends Value implements ContainerValueInterfa
             return v;
         if (v instanceof NullValue)
             return Value.NULL;
-        return NBTSerializableValue.parseString(v.getString());
+        return NBTSerializableValue.parseString(v.getString(), true);
     }
 
 

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

@@ -227,7 +227,7 @@ public class NumericValue extends Value
     }
     public NumericValue(boolean boolval)
     {
-        this(boolval?1.0D:0.0D);
+        this(boolval?1L:0L);
     }
 
     @Override

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

@@ -1,9 +1,11 @@
 package carpet.script.value;
 
+import carpet.fakes.BlockPredicateInterface;
 import carpet.script.exception.InternalExpressionException;
 import carpet.utils.BlockInfo;
 import net.minecraft.block.BlockState;
 import net.minecraft.block.MapColor;
+import net.minecraft.block.pattern.CachedBlockPosition;
 import net.minecraft.entity.Entity;
 import net.minecraft.entity.ai.brain.LookTarget;
 import net.minecraft.entity.ai.brain.WalkTarget;
@@ -21,6 +23,7 @@ import net.minecraft.server.world.ServerWorld;
 import net.minecraft.state.property.Property;
 import net.minecraft.structure.StructurePiece;
 import net.minecraft.structure.StructureStart;
+import net.minecraft.tag.TagManager;
 import net.minecraft.util.Identifier;
 
 import net.minecraft.util.StringIdentifiable;
@@ -40,6 +43,7 @@ import java.util.Locale;
 import java.util.Map;
 import java.util.Set;
 import java.util.UUID;
+import java.util.function.Predicate;
 import java.util.stream.Collectors;
 
 public class ValueConversions
@@ -379,4 +383,15 @@ public class ValueConversions
         if (ret == null) return ListValue.of(Value.NULL, NumericValue.of(itemSlot));
         return ret;
     }
+
+    public static Value ofBlockPredicate(TagManager tagManager, Predicate<CachedBlockPosition> blockPredicate)
+    {
+        BlockPredicateInterface predicateData = (BlockPredicateInterface) blockPredicate;
+        return ListValue.of(
+                predicateData.getCMBlockState()==null?Value.NULL:of(Registry.BLOCK.getId(predicateData.getCMBlockState().getBlock())),
+                predicateData.getCMBlockTag()==null?Value.NULL:of(tagManager.getBlocks().getTagId(predicateData.getCMBlockTag())),
+                MapValue.wrap(predicateData.getCMProperties()),
+                predicateData.getCMDataTag() == null?Value.NULL:new NBTSerializableValue(predicateData.getCMDataTag())
+        );
+    }
 }

src/main/resources/carpet.mixins.json

@@ -176,6 +176,8 @@
     "RecipeManager_scarpetMixin",
     "Ingredient_scarpetMixin",
     "BlockStateArgument_scarpetMixin",
+    "StatePredicate_scarpetMixin",
+    "TagPredicate_scarpetMixin",
     "HorseBaseEntity_scarpetMixin",
     "PillagerEntity_scarpetMixin",