Inventory pages

src/inventory_menu/InventoryMenu.cs

@@ -55,7 +55,7 @@ public partial class InventoryMenu : Control, IInventoryMenu
   public void PopulateItems()
   {
     var inventory = GameRepo.InventoryItems.Value;
-    var numberOfItemsToDisplay = inventory.Count <= _itemsPerPage ? inventory.Count : _itemsPerPage;
+    var numberOfItemsToDisplay = Mathf.Min(inventory.Count, _itemsPerPage);
     var indexToStart = _currentPageNumber == InventoryPageNumber.FirstPage ? 0 : 10;
 
     ForwardArrow.Text = "";
@@ -73,9 +73,9 @@ public partial class InventoryMenu : Control, IInventoryMenu
     }
 
 
-    for (var i = indexToStart; i < numberOfItemsToDisplay + indexToStart; i++)
+    for (var i = 0; i < numberOfItemsToDisplay; i++)
     {
-      var item = inventory.ElementAt(i);
+      var item = inventory.ElementAt(i + indexToStart);
       var itemScene = GD.Load<PackedScene>(ITEM_SLOT_SCENE);
       var itemSlot = itemScene.Instantiate<IItemSlot>();
       ItemsPage.AddChildEx(itemSlot);
@@ -86,13 +86,30 @@ public partial class InventoryMenu : Control, IInventoryMenu
     }
   }
 
+  public override void _UnhandledInput(InputEvent @event)
+  {
+    var inventory = GameRepo.InventoryItems.Value;
+    if (_currentPageNumber == InventoryPageNumber.FirstPage && inventory.Count > _itemsPerPage && Input.IsActionJustPressed(GameInputs.UiRight))
+    {
+      ClearItems();
+      _currentPageNumber = InventoryPageNumber.SecondPage;
+      PopulateItems();
+    }
+
+    if (_currentPageNumber == InventoryPageNumber.SecondPage && Input.IsActionJustPressed(GameInputs.UiLeft))
+    {
+      ClearItems();
+      _currentPageNumber = InventoryPageNumber.FirstPage;
+      PopulateItems();
+    }
+  }
+
   public void ClearItems()
   {
     var items = ItemsPage.GetChildren().OfType<ItemSlot>();
     foreach (var item in items)
     {
       ItemsPage.RemoveChild(item);
-      CallDeferred(nameof(item.QueueFree));
     }
   }
 }