# Package net.minecraftforge.event.world

- Class Summary
  Class | Description
  --- | ---
  BlockEvent |
  BlockEvent.BreakEvent | Event that is fired when an Block is about to be broken by a player Canceling this event will prevent the Block from being broken.
  BlockEvent.HarvestDropsEvent | Fired when a block is about to drop it's harvested items.
  ChunkDataEvent |
  ChunkDataEvent.Load |
  ChunkDataEvent.Save |
  ChunkEvent |
  ChunkEvent.Load |
  ChunkEvent.Unload |
  ChunkWatchEvent |
  ChunkWatchEvent.UnWatch |
  ChunkWatchEvent.Watch |
  WorldEvent |
  WorldEvent.Load |
  WorldEvent.PotentialSpawns | Called by WorldServer to gather a list of all possible entities that can spawn at the specified location.
  WorldEvent.Save |
  WorldEvent.Unload |