init

src/VoxelGrid/ConveyorItemRender.cs

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+namespace ChickenGameTest;
+
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Runtime.CompilerServices;
+using System.Threading.Tasks;
+using Chickensoft.AutoInject;
+using Chickensoft.Introspection;
+using Godot;
+
+[Meta(typeof(IAutoNode))]
+public partial class ConveyorItemRender : Node
+{
+  public override void _Notification(int what) => this.Notify(what);
+  [Export] protected Path3D Path3D { get; set; } = default!;
+  [Export] protected TestItemConveyor ItemConveyor { get; set; } = default!;
+  [Chickensoft.AutoInject.Dependency] protected IItemRenderer Items => this.DependOn<IItemRenderer>();
+  private Chickensoft.Sync.Primitives.AutoList<ConveyorSlice>.Binding binding = default!;
+  public override async void _Ready()
+  {
+    base._Ready();
+    if (!ItemConveyor.IsNodeReady())
+    {
+      await ToSignal(ItemConveyor, Node.SignalName.Ready);
+    }
+    binding = ItemConveyor.Items.Items.Bind();
+    // binding.OnRemove(callback =>
+    // {
+    //   Items.Remove(callback.Item);
+    //   // GD.PrintS(callback.Item, callback.BeltT);
+    //   // if (itemsRenders.TryGetValue(callback.Item, out var node))
+    //   // {
+    //   //   GD.PrintS(callback.Item, callback.BeltT,node);
+    //   //   itemsRenders.Remove(callback.Item);
+    //   //   node.QueueFree();
+    //   // }
+    // });
+    binding.OnAdd((i, v) =>
+    {
+
+      // itemsRenders[i.Item] = new MeshInstance3D(){Mesh = new BoxMesh()};
+      // AddSibling(itemsRenders[i.Item]);
+      // itemsRenders[i.Item].Transform = Path3D.Curve.SampleBakedWithRotation(i.BeltT);
+      // GD.Print($"Item : {i},{v} added");
+      Items.UpdateTransform(i.Item,Path3D.GlobalTransform *Path3D.Curve.SampleBakedWithRotation(i.BeltT));
+    });
+    binding.OnUpdate((a,b) =>
+    {
+      Items.UpdateTransform(a.Item,  Path3D.GlobalTransform *Path3D.Curve.SampleBakedWithRotation(b.BeltT).Translated(-Path3D.Curve.SampleBakedWithRotation(b.BeltT).Basis.X*(b.LaneSpan.Start)));
+      return;
+      if (itemsRenders.TryGetValue(a.Item, out var node))
+      {
+        if (tweens.TryGetValue(a.Item, out var t))
+        {
+          t.Kill();
+        }
+        tweens[a.Item] = t = CreateTween();
+        t.TweenProperty(node, "transform",Path3D.Curve.SampleBakedWithRotation(b.BeltT), .25f);
+        // node.Transform = Path3D.Curve.SampleBakedWithRotation(b.BeltT);
+      }
+    });
+
+  }
+  private Dictionary<IBeltItem, Node3D> itemsRenders = [];//This would be an item server for reuse via depency
+  private Dictionary<IBeltItem, Tween> tweens = [];//This would be an item server for reuse via depency
+  protected override void Dispose(bool disposing)
+  {
+    binding.Dispose();
+    base.Dispose(disposing);
+  }
+}
+
+public interface IItemRenderer
+{
+  // Node3D GetVisualNode(IBeltItem beltItem);
+  void UpdateTransform(IBeltItem beltItem, Transform3D newTransform);
+  void UpdateTransform(IBeltItem beltItem, Transform3D newTransform, float time);
+  void Remove(IBeltItem beltItem);
+}
+public partial class TestItemRendered : Node3D, IItemRenderer
+{
+  public Dictionary<IBeltItem, Node3D> _items = [];
+  private ConditionalWeakTable<IBeltItem, Tween> _tweens = [];
+  public void Remove(IBeltItem beltItem)
+  {
+    if (_items.TryGetValue(beltItem, out var node)){
+      node.QueueFree();
+    }
+    _items.Remove(beltItem);
+  }
+
+  public void UpdateTransform(IBeltItem beltItem, Transform3D newTransform, float time ){
+    if (!_items.TryGetValue(beltItem, out var node))
+    {
+      _items.Add(beltItem,node = beltItem.CreateItemVisual());
+      AddChild(node);
+      beltItem.Disposed += _ =>{node.QueueFree();_items.Remove(beltItem);};
+      node.Transform = newTransform;
+      return;
+    }
+    if (_tweens.TryGetValue(beltItem, out var tween))
+    {
+      tween.Kill();
+      _tweens.Remove(beltItem);
+    }
+    // GD.Print(newTransform);
+    tween = GetTree().CreateTween().BindNode(node);
+    tween.TweenProperty(node, "transform", newTransform, time);
+    _tweens.Add(beltItem,tween);
+  }
+
+  public void UpdateTransform(IBeltItem beltItem, Transform3D newTransform) => UpdateTransform(beltItem,newTransform,.25f);
+}