lead fix and unloaded entity fix

src/main/java/carpet/mixins/MobEntity_leashMixin.java

@@ -0,0 +1,28 @@
+package carpet.mixins;
+
+import carpet.settings.CarpetSettings;
+import net.minecraft.entity.Entity;
+import net.minecraft.entity.mob.MobEntity;
+import net.minecraft.nbt.CompoundTag;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.Shadow;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Inject;
+import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
+
+@Mixin(MobEntity.class)
+public abstract class MobEntity_leashMixin
+{
+    @Shadow /*@Nullable*/ private Entity holdingEntity;
+
+    @Shadow /*@Nullable*/ private CompoundTag leashTag;
+
+    @Inject(method = "writeCustomDataToTag", at = @At("TAIL"))
+    private void addLeashData(CompoundTag compoundTag_1, CallbackInfo ci)
+    {
+        if (holdingEntity == null && CarpetSettings.leadFix && leashTag != null)
+        {
+            compoundTag_1.put("Leash", leashTag);
+        }
+    }
+}

src/main/java/carpet/mixins/ServerWorld_unloadedEntityMixin.java

@@ -0,0 +1,21 @@
+package carpet.mixins;
+
+import carpet.settings.CarpetSettings;
+import net.minecraft.entity.Entity;
+import net.minecraft.server.world.ServerWorld;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Redirect;
+
+@Mixin(ServerWorld.class)
+public class ServerWorld_unloadedEntityMixin
+{
+    @Redirect(method =  "checkChunk", at = @At(
+            value = "INVOKE",
+            target = "Lnet/minecraft/entity/Entity;teleportRequested()Z"
+    ))
+    private boolean addFastEntityCheck(Entity entity)
+    {
+        return CarpetSettings.unloadedEntityFix || entity.teleportRequested();
+    }
+}

src/main/java/carpet/settings/CarpetSettings.java

@@ -104,7 +104,7 @@ public class CarpetSettings
     @Rule( desc = "Shulkers will respawn in end cities", category = FEATURE )
     public static boolean shulkerSpawningInEndCities = false;
 
-    @Rule(desc = "Entities pushed or moved into unloaded chunks no longer disappear", category = {EXPERIMENTAL, BUGFIX}, validate = Validator.WIP.class)
+    @Rule(desc = "Entities pushed or moved into unloaded chunks no longer disappear", category = {EXPERIMENTAL, BUGFIX})
     public static boolean unloadedEntityFix = false;
 
     @Rule( desc = "TNT doesn't update when placed against a power source", category = CREATIVE )
@@ -164,7 +164,11 @@ public class CarpetSettings
     @Rule(desc = "Enables /tick command to control game clocks", category = COMMAND)
     public static boolean commandTick = true;
 
-    @Rule(desc = "Enables /log command to monitor events in the game via chat and overlays", category = COMMAND)
+    @Rule(
+            desc = "Enables /log command to monitor events in the game via chat and overlays",
+            category = COMMAND,
+            validate = Validator.WIP.class
+    )
     public static boolean commandLog = true;
 
     @Rule(
@@ -388,8 +392,7 @@ public class CarpetSettings
     @Rule(
             desc = "Fixes leads breaking/becoming invisible in unloaded chunks",
             extra = "You may still get visibly broken leash links on the client side, but server side the link is still there.",
-            category = BUGFIX,
-            validate = Validator.WIP.class
+            category = BUGFIX
     )
     public static boolean leadFix = false;
 

src/main/java/carpet/settings/Validator.java

@@ -47,13 +47,13 @@ public abstract class Validator<T>
             if (source != null)
                 try
                 {
-                    Messenger.m(source, "r "+currentRule.name+" is not yet fully implemented - we are still working on it.");
+                    Messenger.m(source, "r "+currentRule.name+" is missing a few bits - we are still working on it.");
                 }
                 catch (NullPointerException ignored) { }
             return newValue;
         }
         @Override
-        public String description() { return "Its not yet fully implemented - we are working on it";}
+        public String description() { return "A few bits still needs implementing - we are working on it";}
     }
     public static class _STRICT<T> extends Validator<T>
     {

src/main/resources/carpet.mixins.json

@@ -24,6 +24,8 @@
     "ThreadedAnvilChunkStorage_tickMixin",
 
     "MobEntityMixin",
+    "ServerWorld_unloadedEntityMixin",
+    "MobEntity_leashMixin",
 
     "ServerPlayNetworkHandlerMixin",
     "MinecraftServer_scarpetMixin",