The IBlockAction function can be added to a Block and, depending on where you added it, will be triggered when the block is placed or broken.

Importing the package

Link to importing-the-package

It might be required for you to import the package if you encounter any issues, so better be safe than sorry and add the import.
import mods.contenttweaker.IBlockAction;

The IBlockAction is a function with the following parameters:

  • IWorld world → The world the block is in
  • IBlockPos position → The Block's position
  • ICTBlockState state → Contains information on the block, such as the Block itself and its metadata

The function doesn't have a return value!

zsBlock.onBlockBreak = function(world, blockPos, blockState){
	print("I WAS PLACED!!!");