onPostUpdate method

@override void onPostUpdate(double dt)

Override to react after the update phase each frame.

Called after all registered listenOnPostUpdate listeners.

Implementation

@override
void onPostUpdate(double dt) {
  final screen = sceneBounds.size;

  scene.QueryEntity.DoForEachWith2<CTransform<T>, CVelocity<T>>((e, t, v) {
    final bounds = e.bounds;
    if (bounds == null) return;

    final pos = t.position;
    final vel = v.velocity;

    final body = e.get<CPhysicsBody<T>>();
    final isKinematic = body != null && body.mass == 0;

    double rx = bounds.width / 2;
    double ry = bounds.height / 2;

    // TOP
    final minY = ry;
    if (top && pos.y < minY) {
      pos.y = minY;
      if (vel.y < 0) vel.y = isKinematic ? 0 : -vel.y * restitution;
    }

    // LEFT
    final minX = rx;
    if (left && pos.x < minX) {
      pos.x = minX;
      if (vel.x < 0) vel.x = isKinematic ? 0 : -vel.x * restitution;
    }

    // BOTTOM
    final maxY = screen.y - ry;
    if (bottom && pos.y > maxY) {
      pos.y = maxY;
      if (vel.y > 0) vel.y = isKinematic ? 0 : -vel.y * restitution;
    }

    // RIGHT
    final maxX = screen.x - rx;
    if (right && pos.x > maxX) {
      pos.x = maxX;
      if (vel.x > 0) vel.x = isKinematic ? 0 : -vel.x * restitution;
    }
  });
}