run method

Implementation

void run() {
  final potentials = broadphase.query();
  potentials.forEach((tuple) {
    final itemA = tuple.a;
    final itemB = tuple.b;

    if (itemA.possiblyIntersects(itemB)) {
      final intersectionPoints = intersections(itemA, itemB);
      if (intersectionPoints.isNotEmpty) {
        if (!itemA.collidingWith(itemB)) {
          handleCollisionStart(intersectionPoints, itemA, itemB);
        }
        handleCollision(intersectionPoints, itemA, itemB);
      } else if (itemA.collidingWith(itemB)) {
        handleCollisionEnd(itemA, itemB);
      }
    } else if (itemA.collidingWith(itemB)) {
      handleCollisionEnd(itemA, itemB);
    }
  });

  // Handles callbacks for an ended collision that the broadphase didn't
  // reports as a potential collision anymore.
  _lastPotentials.difference(potentials).forEach((tuple) {
    if (tuple.a.collidingWith(tuple.b)) {
      handleCollisionEnd(tuple.a, tuple.b);
    }
  });
  _lastPotentials
    ..clear()
    ..addAll(potentials);
}