Hi,

I’m trying to make a custom minecart entity but it has some strange behavior: whenever I spawn one on rails, it stutters; it moves for a bit then jumps forward, then moves a bit again and so on. But if the class inherits MinecartEntity, it works as it should.

I don’t understand why.

Here’s how I declare my entity class:

public class TestMinecartEntity extends AbstractMinecartEntity {
  public TestMinecartEntity(EntityType<?> type, World world) {
    super(type, world);
  }

  public TestMinecartEntity(World world, double x, double y, double z) {
    super(ModEntities.TEST_MINECART.get(), world, x, y, z);
  }

  @Override
  public ActionResultType processInitialInteract(PlayerEntity player, Hand hand) {
    if (player.isSecondaryUseActive() || this.isBeingRidden()) {
      return ActionResultType.PASS;
    } else if (!this.world.isRemote) {
      return player.startRiding(this) ? ActionResultType.CONSUME : ActionResultType.PASS;
    } else {
      return ActionResultType.SUCCESS;
    }
  }

  @Override
  public Type getMinecartType() {
    return Type.RIDEABLE;
  }

  @Override
  public IPacket<?> createSpawnPacket() {
    return NetworkHooks.getEntitySpawningPacket(this);
  }
}

The entity type definition:

public class ModEntities {
  public static final RegistryObject<EntityType<TestMinecartEntity>> TEST_MINECART = REGISTER.register(
      "test_minecart",
      () -> EntityType.Builder.<TestMinecartEntity>create(TestMinecartEntity::new, EntityClassification.MISC)
          .size(0.98f, 0.98f)
          .trackingRange(10)
          .updateInterval(10)
          .immuneToFire()
          .build("test_minecart")
  );
}

Am I missing something here? Is there some vanilla code that might cause this behavior?

Anyone has any idea?

Oh, that was much simpler to fix than I thought ^^ Thanks!