public QuadTree(Vector2 position, float gridSize, QuadTree parent, QuadType quadType)
{
this.topLeft = null;
this.topRight = null;
this.bottomLeft = null;
this.bottomRight = null;
this.position = position;
this.gridSize = gridSize;
this.parent = parent;
this.entities = new List<GraphicalEntity>();
this.quadType = quadType;
this.boundRect = new Rectangle((int)position.X, (int)position.Y, (int)gridSize, (int)gridSize);
}
private void createTopRight()
{
if (topRight == null)
topRight = new QuadTree(position + new Vector2(gridSize / 2, 0), gridSize / 2, this, QuadType.TopRight);
}
private void createBottomRight()
{
if (bottomRight == null)
bottomRight = new QuadTree(position + new Vector2(gridSize / 2, gridSize / 2), gridSize / 2, this, QuadType.BottomRight);
}
private void createTopLeft()
{
if (topLeft == null)
topLeft = new QuadTree(position, gridSize / 2, this, QuadType.TopLeft);
}
public void RemoveChildren()
{
if (topLeft != null)
{
if (topLeft.HasChildren())
topLeft.RemoveChildren();
else
topLeft = null;
}
if (topRight != null)
{
if (topRight.HasChildren())
topRight.RemoveChildren();
else
topRight = null;
}
if (bottomLeft != null)
{
if (bottomLeft.HasChildren())
bottomLeft.RemoveChildren();
else
bottomLeft = null;
}
if (bottomRight != null)
{
if (bottomRight.HasChildren())
bottomRight.RemoveChildren();
else
bottomRight = null;
}
}
