/// <summary>
/// Gets a list of entities inside a box.
/// </summary>
/// <typeparam name="TEntity">The type of the entity.</typeparam>
/// <param name="rect">A rectangle in world coordinates.</param>
/// <param name="layer">If specified, only entities in the specified vis layer will be returned.</param>
/// <param name="entityList">A list that will contain the results.</param>
public void GetEntitiesInBox <TEntity>(Rect rect, int?layer, List <TEntity> entityList)
where TEntity : GameEntity
{
var possibles = _entListPool.GetObject();
_quadTree.PossibleEntitiesInBox(rect, possibles);
for (var i = 0; i < possibles.Count; i++)
{
var possible = possibles[i];
if ((layer != null) && (possible.VisLayer != layer))
{
continue;
}
if (possible is TEntity)
{
if (TestAABB(possible.WorldRect, rect))
{
entityList.Add((TEntity)possible);
}
}
}
possibles.Clear();
_entListPool.PutObject(possibles);
}
