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using System.Collections.Generic;
using Microsoft.Xna.Framework;
using Microsoft.Xna.Framework.Content;
using Microsoft.Xna.Framework.Graphics;
using V3.Objects;
namespace V3
{
public sealed class Quadtree
{
private Node mRoot; // The first "Node" of the Quadtree
private ContentManager mContentManager;
private readonly Point mMaxSize;
/// <summary>
/// Generates Quadtree
/// </summary>
/// <param name="maxSize">Gives the biggest/first Rectangle of the Quadtree. This should be the sice of the howl map.</param>
public Quadtree(Point maxSize)
{
mRoot = new Node(new Rectangle(new Point(-128, -128), maxSize), null);
mMaxSize = maxSize;
}
/// <summary>
/// Updates the Quadtree. This is importent for the movements of the Objects.
/// </summary>
public void Update()
{
mRoot.Update1();
}
/// <summary>
/// You call this method if you want to Inster an Object to the Quadtree.
/// </summary>
/// <param name="item">Type of Creature including their position.</param>
public void Insert(IGameObject item)
{
mRoot.AddtoSubNode(item);
}
/// <summary>
/// DMakes the Rectangles of the Quadtree visible.
/// </summary>
/// <param name="spriteBatch"></param>
public void Draw(SpriteBatch spriteBatch)
{
mRoot.DrawQuadtree(spriteBatch, Texture);
}
public List<IGameObject> GetObjectsInRectangle(Rectangle rectangle)
{
List<IGameObject> objectList = new List<IGameObject>();
return mRoot.GetObjectsInRectangle(rectangle, objectList);
}
/// <summary>
/// Deletes an Object out of the Quadtree.
/// </summary>
/// <param name="item">Type of Creature including their position.</param>
public void RemoveItem(IGameObject item)
{
mRoot.Delete(item);
}
/// <summary>
/// Loads the content to draw the Rectangels of the Quadtree.
/// </summary>
/// <param name="contentManager"></param>
public void LoadContent(ContentManager contentManager)
{
mContentManager = contentManager;
Texture = mContentManager.Load<Texture2D>("Sprites/WhiteRectangle");
}
/// <summary>
/// Deletes all elements from the quadtree.
/// </summary>
public void Clear()
{
mRoot?.Clear();
mRoot = new Node(new Rectangle(new Point(-50, -50), mMaxSize), null);
}
private Texture2D Texture { get; set; }
}
}
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