/// <summary>
/// A group used to manage a list of objects inherited from GenBasic.
/// </summary>
public GenGroup()
{
Members = new List<GenBasic>();
_activeMembers = new List<GenBasic>();
_updateMembers = false;
Quadtree = null;
_clear = false;
}
/// <summary>
/// Creates a quadtree for the group based on the current world bounds, and inserts the group's current members.
/// </summary>
public void MakeQuadtree()
{
Quadtree = new GenQuadtree(GenG.WorldBounds.X, GenG.WorldBounds.Y, GenG.WorldBounds.Width, GenG.WorldBounds.Height);
// Add each current member of this group to the quadtree by adding the group itself.
Quadtree.Add(this);
}
/// <summary>
/// A single node within a quadtree data structure.
/// Used as a container for objects or other nodes.
/// </summary>
/// <param name="x">The x position of the top-left corner of the node bounding box.</param>
/// <param name="y">The y position of the top-left corner of the node bounding box.</param>
/// <param name="width">The width of the node bounding box.</param>
/// <param name="height">The height of the node bounding box.</param>
/// <param name="quadtree">A reference to the quadtree manager of this node.</param>
/// <param name="parentNode">The quadtree node that this node is a leaf of. Use null if this is a root node.</param>
/// <param name="level">The split level of the node.</param>
public GenQuadtreeNode(float x, float y, float width, float height, GenQuadtree quadtree, GenQuadtreeNode parentNode, int level)
: base(x, y, width, height)
{
_quadtree = quadtree;
_parentNode = parentNode;
_level = level;
_objects = new List<GenObject>();
_objectCount = 0;
_nodes = new GenQuadtreeNode[4];
}