Class PistonActivateAfterEventSignalBeta

Remarks

Adds a callback that will be called when a piston expands or retracts.

This function can't be called in read-only mode.

Example

pistonAfterEvent.ts

// set up a couple of piston blocks
let piston = overworld.getBlock(targetLocation);
let button = overworld.getBlock({
  x: targetLocation.x,
  y: targetLocation.y + 1,
  z: targetLocation.z,
});

if (piston === undefined || button === undefined) {
  log("Could not find block at location.");
  return -1;
}

piston.setPermutation(
  mc.BlockPermutation.resolve("piston").withState("facing_direction", 3)
);
button.setPermutation(
  mc.BlockPermutation.resolve("acacia_button").withState("facing_direction", 1)
);

mc.world.afterEvents.pistonActivate.subscribe(
  (pistonEvent: mc.PistonActivateAfterEvent) => {
    let eventLoc = pistonEvent.piston.block.location;

    if (
      eventLoc.x === targetLocation.x &&
      eventLoc.y === targetLocation.y &&
      eventLoc.z === targetLocation.z
    ) {
      log(
        "Piston event at " +
          mc.system.currentTick +
          (pistonEvent.piston.isMoving ? " Moving" : "") +
          " State: " +
          pistonEvent.piston.state
      );
    }
  }
);
Copy

Remarks

Removes a callback from being called when a piston expands or retracts.

This function can't be called in read-only mode.

Throws

This function can throw errors.