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  • Block entity data
    • Tags common to all block entities
    •  blockState: The moving block represented by this block entity.
      •  Name: The namespaced ID of the block.
      •  Properties: Optional. The block states of the block.
        •  Name: The block state name and its value.
    •  extending: 1 or 0 (true/false) – true if the block is being pushed.
    •  facing: Direction that the piston pushes (0=down, 1=up, 2=north, 3=south, 4=west, 5=east).
    •  progress: How far the block has been moved.
    •  source: 1 or 0 (true/false) – true if the block represents the piston head itself, false if it represents a block being pushed.