Generator

/**
 * Generates clones of the node attached to on regular intervals
 */
class Generator {

	constructor(node) {
		this.node = node;
		this.node.bodyType = "kinematic";
		this.node.active = false;
		this.node.alpha = 0.5;

		this.counter = 0;
		this.frequency = 240;
		this.created = 0;
	}

	update(delta) {
		if (++this.counter % this.frequency === 0) {
			this.created++;
			const clone = this.node.clone();
			clone.scripts = [];
			clone.bodyType = "dynamic";
			clone.active = true;
			clone.alpha = 1;
			clone.text = "Copy " + this.created;
			this.node.parent.addChild(clone);
		}
	}
}


Destroyer

/**
 * Destroys BodyNodes that get in contact with it
 */
 class Destroyer {

	constructor(node) {
		this.node = node;
		this.destroyQueue = new Set();
	}

	update(delta) {
		for (let bodyNode of this.destroyQueue) {
			if (bodyNode.alpha > 0) {
				bodyNode.alpha -= 0.01;
			} else {
				if (bodyNode.parent) {
					bodyNode.parent.removeChild(bodyNode);
					this.destroyQueue.delete(bodyNode);
				}
			}
		}
	}

	onBeginContact(bodyNode, contact) {
		if (contact.IsTouching()) {
			this.destroyQueue.add(bodyNode);
		}
	}
}


A mechanism which resembles a factory production line. The Scene consists of a **Generator** node which will continuously create copies of itself and a **Destroyer** node which is responsible for destroying any object that collides with it .