Function triggerEvent

packages/melonjs/src/input/pointerevent.ts:269–290

* @ignore

(
	handlers: PointerHandler,
	type: string | undefined,
	pointer: Pointer,
	pointerId: number | null,
)

 * @ignore
 */
function triggerEvent(
	handlers: PointerHandler,
	type: string | undefined,
	pointer: Pointer,
	pointerId: number | null,
): boolean {
	let callback;
	if (type && handlers.callbacks[type]) {
		handlers.pointerId = pointerId;
		for (
			let i = handlers.callbacks[type].length - 1;
			i >= 0 && (callback = handlers.callbacks[type][i]);
			i--
		) {
			if (callback(pointer) === false) {
				// stop propagating the event if return false
				return true;
			}
		}
	}
	return false;
}

/**
 * propagate events to registered objects