/// <summary>
/// Gets all objects encountered at the given position, in order from the highest existing layer in the layer mask downward. Layer mask defaults
/// to all layers.
/// </summary>
/// <param name="x">X-value of the position to get objects for.</param>
/// <param name="y">Y-value of the position to get objects for.</param>
/// <param name="layerMask">Layer mask for which layers can return an object. Defaults to all layers.</param>
/// <returns>All objects encountered at the given position, in order from the highest existing layer in the mask downward.</returns>
public IEnumerable <IGameObject> GetObjects(int x, int y, uint layerMask = uint.MaxValue)
{
foreach (var entity in _entities.GetItems(x, y, layerMask))
{
yield return(entity);
}
if (LayerMasker.HasLayer(layerMask, 0) && _terrain[x, y] != null)
{
yield return(_terrain[x, y]);
}
}