feat(ui): inventory

src/Apps/GameDesktop/CompositionRoots/Components/ComponentsCompositionRoot.cs

@@ -146,7 +146,8 @@ private static void RegisterInventoryComponent(IServiceRegistry serviceRegistry)
             Slot[] slots = new Slot[count];
 
             // Put items in slots like that:
-            // slots[0].Item = ItemId.Rock;
+            slots[3].Item = ItemId.Rock;
+            slots[3].Amount = 3;
 
             return new InventoryComponent(slots);
         });

src/Apps/GameDesktop/CompositionRoots/Features/RootFeatureCompositionRoot.cs

@@ -140,6 +140,12 @@ private static void RegisterEntryPoint(IServiceRegistry serviceRegistry)
 
         // UI
         serviceRegistry.RegisterSingleton(_ => new Panel());
+        serviceRegistry.RegisterSingleton(factory =>
+        {
+            var filter = factory.GetInstance<World>().Filter.With<InventoryComponent>().Build();
+            ref var inventory = ref filter.First().GetComponent<InventoryComponent>();
+            return new Inventory(factory.GetInstance<Panel>(), ref inventory);
+        });
         serviceRegistry.RegisterSingleton(factory =>
             new Counter(factory.GetInstance<Panel>(),
                 new Label
@@ -175,6 +181,7 @@ private static void RegisterEntryPoint(IServiceRegistry serviceRegistry)
             Desktop desktop = new();
             desktop.Root = factory.GetInstance<Panel>();
 
+            factory.GetInstance<Inventory>();
             factory.GetInstance<MainScreen>();
 
             return desktop;

src/Apps/GameDesktop/Game.cs

@@ -43,15 +43,10 @@ protected override void Initialize()
         _logger.ForContext<Game>().Verbose($"Initialize(): start; available {GraphicsDevice}");
         _logger.ForContext<Game>().Verbose("Circular dependencies (external) initialization...");
         RegisterSpriteBatch();
-        RegisterMyraUIEnvironment();
-#if DEBUG
-        RegisterImGuiRenderer();
-#endif
         _logger.ForContext<Game>().Verbose("Circular dependencies (external) initialized");
 
         _logger.ForContext<Game>().Verbose("Game services initialization...");
         RegisterRootFeature();
-        RegisterMyraUI();
         _logger.ForContext<Game>().Verbose("Game services initialized");
 
         base.Initialize();
@@ -68,6 +63,15 @@ protected override void LoadContent()
 
         _rootFeature.OnAwake();
 
+        // Register UIs after systems initialization, because they have initialized,
+        // thus we can make the first queries to the world like:
+        // World.Filter.With<>() -> ref e.GetComponent<> -> Pass-through in UI
+#if DEBUG
+        RegisterImGuiRenderer();
+#endif
+        RegisterMyraUIEnvironment();
+        RegisterMyraUI();
+
         _logger.ForContext<Game>().Verbose("LoadContent(): end");
     }
 
@@ -131,7 +135,11 @@ private void RegisterSpriteBatch()
         _spriteBatch = _container.GetInstance<SpriteBatch>();
     }
 
-    private void RegisterMyraUIEnvironment() => MyraEnvironment.Game = this;
+    private void RegisterRootFeature()
+    {
+        _container.RegisterFrom<RootFeatureCompositionRoot>();
+        _rootFeature = _container.GetInstance<RootFeature>();
+    }
 
     private void RegisterImGuiRenderer()
     {
@@ -147,37 +155,7 @@ private void RegisterImGuiRenderer()
         ImGui.GetIO().ConfigFlags = ImGuiConfigFlags.DockingEnable | ImGuiConfigFlags.ViewportsEnable;
     }
 
-    private void RegisterRootFeature()
-    {
-        _container.RegisterFrom<RootFeatureCompositionRoot>();
-        _rootFeature = _container.GetInstance<RootFeature>();
-    }
+    private void RegisterMyraUIEnvironment() => MyraEnvironment.Game = this;
 
-    private void RegisterMyraUI()
-    {
-        // ComboBox
-        // var combo = new ComboBox();
-        // combo.Items.Add(new ListItem("Red", Color.Red));
-        // combo.Items.Add(new ListItem("Green", Color.Green));
-        // combo.Items.Add(new ListItem("Blue", Color.Blue));
-
-        // Button
-        // var button = new Button { Content = new Label { Text = "Show" } };
-        // button.Click += (s, a) =>
-        // {
-            // var messageBox = Dialog.CreateMessageBox("Message", "Some message!");
-            // messageBox.ShowModal(_desktop);
-        // };
-
-        // var grid = _container.GetInstance<Grid>();
-        // new UIFactory(grid,
-        //         new Label { Id = "label", Text = "Hello, World!" },
-        //         combo,
-        //         button,
-        //         new SpinButton { Width = 100, Nullable = true })
-        //     .Build();
-        // ---
-
-        _desktop = _container.GetInstance<Desktop>();
-    }
+    private void RegisterMyraUI() => _desktop = _container.GetInstance<Desktop>();
 }

src/Libs/UI/Blocks/Inventory.cs

@@ -0,0 +1,37 @@
+using Components.Data;
+using FontStashSharp.RichText;
+using Myra.Graphics2D.UI;
+
+namespace UI.Blocks;
+
+public class Inventory
+{
+    public Inventory(Container container, ref InventoryComponent inventory)
+    {
+        var title = new Label
+        {
+            HorizontalAlignment = HorizontalAlignment.Left,
+            VerticalAlignment = VerticalAlignment.Top,
+            TextAlign = TextHorizontalAlignment.Left,
+            Text = "Inventory",
+            Top = 20,
+            Left = 30,
+        };
+        container.Widgets.Add(title);
+
+        for (int i = 0; i < inventory.Slots.Length; i++)
+        {
+            var slot = inventory.Slots[i];
+            var label = new Label
+            {
+                HorizontalAlignment = HorizontalAlignment.Left,
+                VerticalAlignment = VerticalAlignment.Top,
+                TextAlign = TextHorizontalAlignment.Left,
+                Text = $"{i + 1}: {slot.GetInfo().Name}, {slot.Amount}",
+                Top = 50 + 18 * i,
+                Left = 30,
+            };
+            container.Widgets.Add(label);
+        }
+    }
+}