@polygonjs/polygonjs/src/engine/nodes/event/Delay.ts

node-based WebGL 3D engine https://polygonjs.com

/**
 * Adds a delay to trigger received events
 *
 *
 *
 */
import {TypedEventNode} from './_Base';
import {NodeParamsConfig, ParamConfig} from '../utils/params/ParamsConfig';
import {EventConnectionPoint, EventConnectionPointType} from '../utils/io/connections/Event';
import { EventContext } from '../../../core/event/EventContextType';

const INPUT_NAME = 'in';
const OUTPUT_NAME = 'out';


class DelayEventParamsConfig extends NodeParamsConfig {
	/** @param delay before dispatching (in milliseconds) */
	delay = ParamConfig.INTEGER(1000, {
		range: [0, 1000],
		rangeLocked: [true, false],
	});
}
const ParamsConfig = new DelayEventParamsConfig();

export class DelayEventNode extends TypedEventNode<DelayEventParamsConfig> {
	override paramsConfig = ParamsConfig;
	static override type() {
		return 'delay';
	}
	override initializeNode() {
		this.io.inputs.setNamedInputConnectionPoints([
			new EventConnectionPoint(INPUT_NAME, EventConnectionPointType.BASE, this._process_input.bind(this)),
		]);
		this.io.outputs.setNamedOutputConnectionPoints([
			new EventConnectionPoint(OUTPUT_NAME, EventConnectionPointType.BASE),
		]);
	}

	private _process_input(event_context: EventContext<Event>) {
		setTimeout(() => {
			this.dispatchEventToOutput(OUTPUT_NAME, event_context);
		}, this.pv.delay);
	}
}