I have the following class (Scala).

 

class ItemMyItem extends Item {
  setRegistryName("my_item")
  setUnlocalizedName("my_item")
  maxStackSize = 1
  setCreativeTab(CreativeTabs.TOOLS)

  def spawnParticles(world: World, pos: BlockPos): Unit = {
    for (_ <- 1 to 50000) {
      val randX = Random.nextDouble()
      val randZ = Random.nextDouble()
      val randPlusX = Random.nextBoolean()
      val randPlusY = Random.nextBoolean()
      val randPlusZ = Random.nextBoolean()
      val d0 = pos.getX + 20.0 * (if (randPlusX) randX else -randX)
      val d1 = pos.getY + (if (randPlusY) randX else -randX) * 6.0 / 16.0
      val d2 = pos.getZ + 20.0 * (if (randPlusZ) randZ else -randZ)
      world.spawnParticle(EnumParticleTypes.PORTAL, d0, d1, d2, 20.0 * (if (randPlusX) randX else -randX), 1.0, 20.0 * (if (randPlusZ) randZ else -randZ))
    }
  }

  override
  def itemInteractionForEntity(stack: ItemStack, playerIn: EntityPlayer, target: EntityLivingBase, hand: EnumHand): Boolean = {
    super.itemInteractionForEntity(stack, playerIn, target, hand)
    playerIn.playSound(MyMod.mySound, 1.0F, 1.0F)
    spawnParticles(playerIn.getEntityWorld, playerIn.getPosition)
    true
  }
}

 

The problem is that when I test in multiplayer, only the person using the item can see the particles and hear the sound.  They can see the arm swing animation on use.  I was wondering why that was, and how I could get other players to see/hear them.

 

Only on the client proxy do I register the sound.  I am using vanilla particles, so I don't ever register those.

 

I checked the docs and they seem to suggest it should be run on both sides automatically.  Any help would be appreciated.

Thank you very much.  I will check how to use packets.

 

For the sound, I still can't get it to work right now.  I'll post back if I figure it out.