BetaBetaAdds a callback that will be called when a piston expands or retracts.
This function can't be called in read-only mode.
// 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" : "") +
(pistonEvent.piston.isExpanding ? " Expanding" : "") +
(pistonEvent.piston.isExpanded ? " Expanded" : "") +
(pistonEvent.piston.isRetracting ? " Retracting" : "") +
(pistonEvent.piston.isRetracted ? " Retracted" : "")
);
}
});
let canceled = false;
const pistonLoc: mc.Vector3 = {
x: Math.floor(targetLocation.x) + 1,
y: Math.floor(targetLocation.y) + 2,
z: Math.floor(targetLocation.z) + 1,
};
const pistonCallback = mc.world.beforeEvents.pistonActivate.subscribe((pistonEvent: mc.PistonActivateBeforeEvent) => {
if (pistonEvent.piston.location.equals(pistonLoc)) {
log("Cancelling piston event");
pistonEvent.cancel = true;
canceled = true;
}
});
Manages callbacks that are connected to piston activations.