MinecraftForge/MinecraftForge — pull request #179 by psxlover (2012-09-21 01:25:50+00:00)
Title: BlockChange event

The hook from pr #59 changed to use events.
Called whenever a block change is triggered (changeBlock/changeBlockAndMetadata/changeMetadata) providing information about the new block that is being placed, with the ability to cancel it.