# Pastebin xAYT4N96
class MyBlock: Block(Material(MapColor.PURPLE)) {
    init {
        blockHardness = 1.0f
        unlocalizedName = "my-block"

        setCreativeTab(CreativeTab)
        setRegistryName("my-block")
    }

    val validDirections =
            arrayOf(EnumFacing.EAST, EnumFacing.WEST, EnumFacing.NORTH, EnumFacing.SOUTH, EnumFacing.UP, EnumFacing.DOWN)

    val myTileEntity: MyBlockTE by lazy { MyBlockTE() }

    override fun isSideSolid(base_state: IBlockState?, world: IBlockAccess?, pos: BlockPos?, side: EnumFacing?): Boolean = true

    override fun canHarvestBlock(world: IBlockAccess?, pos: BlockPos?, player: EntityPlayer?): Boolean = true

    override fun getHarvestTool(state: IBlockState?): String? = null

    override fun canBeReplacedByLeaves(state: IBlockState?, world: IBlockAccess?, pos: BlockPos?): Boolean = false

    override fun getValidRotations(world: World?, pos: BlockPos?): Array<EnumFacing> = validDirections

    override fun onBlockActivated(worldIn: World?, pos: BlockPos?, state: IBlockState?, playerIn: EntityPlayer?, hand: EnumHand?, heldItem: ItemStack?, side: EnumFacing?, hitX: Float, hitY: Float, hitZ: Float): Boolean {
        if (!worldIn!!.isRemote) {
            return false
        }

        myTileEntity.saySomethingRandom(playerIn!!)
        return true
    }

    override fun createTileEntity(world: World?, state: IBlockState?): TileEntity {
        return myTileEntity
    }
}

class MyBlockTE: TileEntity() {
    var nbtData: NBTTagCompound = NBTTagCompound()
    var messages: MutableList<String> by nbtData

    fun saySomethingRandom(player: EntityPlayer) {
        if(messages.isEmpty()) {
            messages = mutableListOf("That tickles!", "Teehee~", "Stop it!", "Boo!")
        }

        val text = TextComponentString(messages.random())
        text.style = text.style.setColor(TextFormatting.RED)

        player.sendMessage(text)
    }

    override fun readFromNBT(compound: NBTTagCompound?) {
        ButtsMod.log.info("Reading MyBlockTE from NBT!")
        nbtData = compound?.getCompoundTag("kotlin-state")!!

        super.readFromNBT(compound)
    }

    override fun writeToNBT(compound: NBTTagCompound?): NBTTagCompound {
        ButtsMod.log.info("Writing MyBlockTE to NBT!")

        compound!!.setTag("kotlin-state", nbtData)

        return super.writeToNBT(compound)
    }
}