added despawn timer

src/main/java/carpet/mixins/PistonBlock_movableTEMixin.java

@@ -30,7 +30,7 @@ public abstract class PistonBlock_movableTEMixin extends FacingBlock
     
     private ThreadLocal<List<BlockEntity>> list1_BlockEntities = new ThreadLocal<>(); //Unneccessary ThreadLocal if client and server use different PistonBlock instances
 
-    @Inject(method = "isMovable", at = @At(value = "RETURN", ordinal = 3, shift = At.Shift.BEFORE))
+    @Inject(method = "isMovable", cancellable = true, at = @At(value = "RETURN", ordinal = 3, shift = At.Shift.BEFORE))
     private static void movableCMD(BlockState blockState_1, World world_1, BlockPos blockPos_1,
             Direction direction_1, boolean boolean_1, Direction direction_2, CallbackInfoReturnable<Boolean> cir)
     {

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

@@ -32,6 +32,7 @@ import net.minecraft.util.StringIdentifiable;
 import net.minecraft.util.dynamic.GlobalPos;
 import net.minecraft.util.math.BlockBox;
 import net.minecraft.util.math.BlockPos;
+import net.minecraft.util.math.Box;
 import net.minecraft.util.math.ColumnPos;
 import net.minecraft.util.math.Vec3d;
 import net.minecraft.util.math.Vec3i;
@@ -302,6 +303,21 @@ public class ValueConversions
                 new StringValue(uuid.toString())
         );
     }
+    public static Value of(Box box)
+    {
+        return ListValue.of(
+                ListValue.fromTriple(box.minX, box.minY, box.minZ),
+                ListValue.fromTriple(box.maxX, box.maxY, box.maxZ)
+        );
+    }
+
+    public static Value of(BlockBox box)
+    {
+        return ListValue.of(
+                ListValue.fromTriple(box.minX, box.minY, box.minZ),
+                ListValue.fromTriple(box.maxX, box.maxY, box.maxZ)
+        );
+    }
 
     public static Value of(StructureStart<?> structure)
     {
@@ -399,6 +415,8 @@ public class ValueConversions
     }
 
     public static Value guess(ServerWorld serverWorld, Object o) {
+        if (o == null)
+            return Value.NULL;
         if (o instanceof List)
             return ListValue.wrap(((List<?>) o).stream().map(oo -> guess(serverWorld, oo)).collect(Collectors.toList()));
         if (o instanceof BlockPos)
@@ -409,6 +427,10 @@ public class ValueConversions
             return of((Vec3d)o);
         if (o instanceof Vec3i)
             return of(new BlockPos((Vec3i)o));
+        if (o instanceof Box)
+            return of((Box)o);
+        if (o instanceof BlockBox)
+            return of((BlockBox) o);
         if (o instanceof ItemStack)
             return of((ItemStack)o);
         if (o instanceof Boolean)

src/main/resources/assets/carpet/scripts/ai_tracker.sc

@@ -282,6 +282,21 @@ global_functions = {
       ]
    },
 
+    'despawn_timer' -> {
+         '*' -> [
+            _(arg) -> _(e) -> (
+               despawn_timer = e~'despawn_timer';
+               if (despawn_timer,
+                  [[], [],  [['despawn', 'despawn timer:', despawn_timer]]]
+               ,
+                  [[], [], []]
+               )
+            ),
+         ,
+            null
+         ]
+      },
+
    'health' -> {
          '*' -> [
             _(arg) -> _(e) -> (
@@ -370,7 +385,7 @@ __config() ->{
         'transparency <alpha>'->_(alpha)->global_opacity = alpha
     },
     'arguments'->{
-        'display'->{'type'->'term','options'->['item_pickup','velocity','portal_cooldown','health','pathfinding','xpstack','drowning']},
+        'display'->{'type'->'term','options'->['item_pickup','velocity','portal_cooldown','despawn_timer','health','pathfinding','xpstack','drowning']},
         'aspect'->{'type'->'term','options'->['iron_golem_spawning','buddy_detection','hostile_detection','breeding']},
         'ticks'->{'type'->'int','min'->0,'max'->100},
         'alpha'->{'type'->'int','min'->0,'max'->255},