145 lines
3.7 KiB
C#
145 lines
3.7 KiB
C#
using Ghost.Entities;
|
|
using System.Collections.ObjectModel;
|
|
|
|
namespace Ghost.Editor.Core.SceneGraph;
|
|
|
|
/// <summary>
|
|
/// Represents an entity node in the editor scene graph hierarchy.
|
|
/// Contains editor-only metadata like display name and hierarchy information.
|
|
/// </summary>
|
|
public class EntityNode
|
|
{
|
|
private string _name;
|
|
private readonly ObservableCollection<EntityNode> _children;
|
|
|
|
/// <summary>
|
|
/// Gets or sets the entity this node represents.
|
|
/// </summary>
|
|
public Entity Entity { get; set; }
|
|
|
|
/// <summary>
|
|
/// Gets or sets the display name for this entity in the editor.
|
|
/// This is NOT stored in runtime components.
|
|
/// </summary>
|
|
public string Name
|
|
{
|
|
get => _name;
|
|
set
|
|
{
|
|
_name = value;
|
|
OnNameChanged?.Invoke(this);
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets the parent node of this entity node.
|
|
/// </summary>
|
|
public EntityNode? Parent { get; internal set; }
|
|
|
|
/// <summary>
|
|
/// Gets the scene node that contains this entity.
|
|
/// </summary>
|
|
public SceneNode? OwnerScene { get; internal set; }
|
|
|
|
/// <summary>
|
|
/// Gets the collection of child entity nodes.
|
|
/// </summary>
|
|
public ObservableCollection<EntityNode> Children => _children;
|
|
|
|
/// <summary>
|
|
/// Event raised when the name property changes.
|
|
/// </summary>
|
|
public event Action<EntityNode>? OnNameChanged;
|
|
|
|
/// <summary>
|
|
/// Event raised when children collection changes.
|
|
/// </summary>
|
|
public event Action<EntityNode>? OnChildrenChanged;
|
|
|
|
public EntityNode(Entity entity, string name = "Entity")
|
|
{
|
|
Entity = entity;
|
|
_name = name;
|
|
_children = [];
|
|
_children.CollectionChanged += (s, e) => OnChildrenChanged?.Invoke(this);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Adds a child entity node to this node.
|
|
/// </summary>
|
|
/// <param name="child">The child node to add.</param>
|
|
public void AddChild(EntityNode child)
|
|
{
|
|
if (child.Parent != null)
|
|
{
|
|
child.Parent.RemoveChild(child);
|
|
}
|
|
|
|
child.Parent = this;
|
|
child.OwnerScene = OwnerScene;
|
|
_children.Add(child);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Removes a child entity node from this node.
|
|
/// </summary>
|
|
/// <param name="child">The child node to remove.</param>
|
|
/// <returns>True if the child was removed, false otherwise.</returns>
|
|
public bool RemoveChild(EntityNode child)
|
|
{
|
|
if (_children.Remove(child))
|
|
{
|
|
child.Parent = null;
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets all descendants of this node (children, grandchildren, etc.) in depth-first order.
|
|
/// </summary>
|
|
/// <returns>An enumerable of all descendant nodes.</returns>
|
|
public IEnumerable<EntityNode> GetAllDescendants()
|
|
{
|
|
foreach (var child in _children)
|
|
{
|
|
yield return child;
|
|
|
|
foreach (var descendant in child.GetAllDescendants())
|
|
{
|
|
yield return descendant;
|
|
}
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Finds an entity node by its entity reference.
|
|
/// </summary>
|
|
/// <param name="entity">The entity to search for.</param>
|
|
/// <returns>The entity node if found, null otherwise.</returns>
|
|
public EntityNode? FindNode(Entity entity)
|
|
{
|
|
if (Entity.Equals(entity))
|
|
{
|
|
return this;
|
|
}
|
|
|
|
foreach (var child in _children)
|
|
{
|
|
var found = child.FindNode(entity);
|
|
if (found != null)
|
|
{
|
|
return found;
|
|
}
|
|
}
|
|
|
|
return null;
|
|
}
|
|
|
|
public override string ToString()
|
|
{
|
|
return $"{Name} (Entity: {Entity})";
|
|
}
|
|
}
|