Added basic inventory system

2025-03-25 19:39:00 +01:00
parent 4f312209b3
commit 959ab68b4d
19 changed files with 298 additions and 1 deletions
@@ -0,0 +1,85 @@
+#nullable enable
+using System;
+using Godot;
+using System.Collections.Generic;
+
+namespace Babushka.scripts.CSharp.Common.Inventory;
+
+public partial class InventoryInstance : Node
+{
+    private List<InventorySlot> _slots = new();
+    public IReadOnlyList<InventorySlot> Slots => _slots;
+
+    [Signal]
+    public delegate void SlotAmountChangedEventHandler();
+    [Signal]
+    public delegate void InventoryContentsChangedEventHandler();
+
+    [Export]
+    public int SlotAmount
+    {
+        get => _slots.Count;
+        set
+        {
+            if (value < _slots.Count)
+            {
+                _slots.RemoveRange(value, _slots.Count - value);
+            }
+            else if (value > _slots.Count)
+            {
+                for (var i = _slots.Count; i < value; i++)
+                {
+                    _slots.Add(new InventorySlot());
+                }
+            }
+            EmitSignal(SignalName.SlotAmountChanged);
+        }
+    }
+    
+    public InventoryActionResult AddItem(ItemInstance newItem, int inventorySlot = -1)
+    {
+        if (inventorySlot < 0)
+        {
+            inventorySlot = _slots.FindIndex(slot => slot.IsEmpty());
+        }
+        
+        if (inventorySlot < 0 || !_slots[inventorySlot].IsEmpty())
+        {
+            return InventoryActionResult.DestinationFull;
+        }
+        
+        if (inventorySlot >= _slots.Count)
+        {
+            return InventoryActionResult.DestinationDoesNotExists;
+        }
+        
+        _slots[inventorySlot].itemInstance = newItem;
+        EmitSignal(SignalName.InventoryContentsChanged);
+        return InventoryActionResult.Success;
+    }
+    
+    public InventoryActionResult RemoveItem(int inventorySlot, out ItemInstance? itemInstance )
+    {
+        if (inventorySlot < 0 || inventorySlot >= _slots.Count)
+        {
+            itemInstance = null;
+            return InventoryActionResult.SourceDoesNotExists;
+        }
+        
+        if (_slots[inventorySlot].IsEmpty())
+        {
+            itemInstance = null;
+            return InventoryActionResult.SourceIsEmpty;
+        }
+        
+        itemInstance = _slots[inventorySlot].itemInstance;
+        _slots[inventorySlot].itemInstance = null;
+        EmitSignal(SignalName.InventoryContentsChanged);
+        return InventoryActionResult.Success;
+    }
+    
+    public InventoryActionResult RemoveItem(int inventorySlot)
+    {
+        return RemoveItem(inventorySlot, out _);
+    }
+}