Function dispatchEvent

packages/melonjs/src/input/pointerevent.ts:296–462

* propagate events to registered objects * @ignore

(normalizedEvents: Pointer[])

 * @ignore
 */
function dispatchEvent(normalizedEvents: Pointer[]): boolean {
	let handled = false;

	while (normalizedEvents.length > 0) {
		// keep a reference to the last item
		const pointer = normalizedEvents.pop()!;
		// and put it back into our cache
		T_POINTERS.push(pointer);

		// Do not fire older touch events (not required for PointerEvent type)
		if (
			pointer.isNormalized &&
			typeof pointer.event!.timeStamp !== "undefined"
		) {
			if (pointer.event!.timeStamp < lastTimeStamp) {
				continue;
			}
			lastTimeStamp = pointer.event!.timeStamp;
		}

		currentPointer.pos.set(pointer.gameWorldX, pointer.gameWorldY);
		currentPointer.setSize(pointer.width, pointer.height);

		// trigger a global event for pointer move
		if (POINTER_MOVE.includes(pointer.type)) {
			pointer.gameX = pointer.gameLocalX = pointer.gameScreenX;
			pointer.gameY = pointer.gameLocalY = pointer.gameScreenY;
			emit(POINTERMOVE, pointer);
		}

		// fetch valid candiates from the game world container
		let candidates = _app.world.broadphase.retrieve(
			currentPointer,
			(a: any, b: any) => _app.world._sortReverseZ(a, b),
			undefined,
		);

		// add the main game viewport to the list of candidates
		candidates = candidates.concat([_app.viewport]);

		for (
			let c = candidates.length, candidate;
			c--, (candidate = candidates[c]);
		) {
			if (eventHandlers.has(candidate) && candidate.isKinematic !== true) {
				const handlers = eventHandlers.get(candidate)!;
				const region = handlers.region;
				const ancestor = region.ancestor;
				const bounds = region.getBounds();

				if (region.isFloating === true) {
					pointer.gameX = pointer.gameLocalX = pointer.gameScreenX;
					pointer.gameY = pointer.gameLocalY = pointer.gameScreenY;
				} else {
					pointer.gameX = pointer.gameLocalX = pointer.gameWorldX;
					pointer.gameY = pointer.gameLocalY = pointer.gameWorldY;
				}