Invoked for the block at (x,y,z) when an adjacent block (at fx,fy,fz) changed. Used by blocks that depend on their surroundings — plants needing support, redstone, observers, fluids re-flowing into a new opening.
Invoked for the block at (x,y,z) when an adjacent block (at fx,fy,fz) changed. Used by blocks that depend on their surroundings — plants needing support, redstone, observers, fluids re-flowing into a new opening.