GuiManager

Assets/Scripts/PlayerController.cs

@@ -35,6 +35,11 @@ public class PlayerController : MonoBehaviour
       }
     }
 
+    if (Input.GetKeyDown(KeyCode.Tab))
+    {
+      GuiManager.Instance.TogglePanel("Inventory");
+    }
+
     //! DEBUG
     if (Input.GetKeyDown(KeyCode.U))
     {

Assets/Scripts/UI/DraggableSlotContentUI.cs

@@ -2,8 +2,6 @@ using UnityEngine;
 using UnityEngine.EventSystems;
 using UnityEngine.UI;
 
-
-
 public class DraggableSlotContentUI : MonoBehaviour, IBeginDragHandler, IDragHandler, IEndDragHandler
 {
   public int slotIndex; // slotIndex is set by SlotUI

Assets/Scripts/UI/GuiManager.cs

@@ -0,0 +1,140 @@
+using System.Collections.Generic;
+using UnityEngine;
+
+public class GuiManager : MonoBehaviour
+{
+
+  private static GuiManager instance;
+
+  public static GuiManager Instance
+  {
+    get
+    {
+      if (instance == null)
+      {
+        instance = FindObjectOfType<GuiManager>();
+        if (instance == null)
+        {
+          Debug.LogError("No GuiManager found in the scene.");
+        }
+      }
+      return instance;
+    }
+  }
+
+
+
+  [SerializeField] private List<GuiPanel> panels = new List<GuiPanel>();
+
+  private void Awake()
+  {
+    if (instance == null)
+    {
+      instance = this;
+    }
+    else
+    {
+      Destroy(gameObject);
+    }
+  }
+
+
+  public void RegisterPanel(GuiPanel panel)
+  {
+    panel.gameObject.SetActive(false);
+    panels.Add(panel);
+  }
+
+  public GuiPanel GetPanelByName(string name)
+  {
+    name = name.ToLower();
+    foreach (GuiPanel panel in panels)
+    {
+      if (panel.GetName().ToLower() == name)
+      {
+        return panel;
+      }
+    }
+    return null;
+  }
+
+  public void OpenPanel(string name)
+  {
+    GuiPanel panel = GetPanelByName(name);
+    if (panel != null)
+    {
+      OpenPanel(panel);
+    }
+  }
+
+  public void OpenPanel(GuiPanel panel)
+  {
+
+    if (!panel.gameObject.activeSelf)
+    {
+      panel.gameObject.SetActive(true);
+      panel.OnClose();
+      Debug.Log("Open Panel");
+      return;
+    }
+    Debug.Log("Panel is already opened");
+  }
+
+
+  public void ClosePanel(string name)
+  {
+    GuiPanel panel = GetPanelByName(name);
+    if (panel != null)
+    {
+      ClosePanel(panel);
+    }
+  }
+
+  public void ClosePanel(GuiPanel panel)
+  {
+    if (panel.gameObject.activeSelf)
+    {
+      panel.gameObject.SetActive(false);
+      panel.OnClose();
+      Debug.Log("Closed Panel");
+      return;
+    }
+    Debug.Log("Panel is already closed");
+  }
+
+
+  public void CloseAllPanels()
+  {
+    foreach (GuiPanel panel in panels)
+    {
+      if (panel.gameObject.activeSelf)
+      {
+        ClosePanel(panel);
+      }
+    }
+  }
+
+  public void TogglePanel(string name)
+  {
+    GuiPanel panel = GetPanelByName(name);
+    if (panel != null)
+    {
+      TogglePanel(panel);
+    }
+  }
+
+  public void TogglePanel(GuiPanel panel)
+  {
+    if (panel != null)
+    {
+      if (panel.gameObject.activeSelf)
+      {
+        ClosePanel(panel);
+      }
+      else
+      {
+        OpenPanel(panel);
+      }
+    }
+  }
+}

Assets/Scripts/UI/GuiManager.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 2ccedadcedce99843833ee718fc06377
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Assets/Scripts/UI/GuiPanel.cs

@@ -0,0 +1,22 @@
+using UnityEngine;
+
+public abstract class GuiPanel : MonoBehaviour
+{
+  [SerializeField] private string panelName;
+
+  public string GetName()
+  {
+    return panelName;
+  }
+
+  private void Awake()
+  {
+    GuiManager.Instance.RegisterPanel(this);
+  }
+
+  public abstract void OnOpen();
+  public abstract void OnClose();
+}
+
+
+

Assets/Scripts/UI/GuiPanel.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 65c73c21bddab2d45b5b2f5a01bc9056
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Assets/Scripts/UI/InventoryUI.cs

@@ -2,7 +2,7 @@ using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 
-public class InventoryUI : MonoBehaviour
+public class InventoryUI : GuiPanel
 {
   [SerializeField] private GameObject slotPrefab;
   [SerializeField] private GameObject slotListObj;
@@ -15,10 +15,16 @@ public class InventoryUI : MonoBehaviour
     playerInventory = GameObject.FindGameObjectWithTag("Player").GetComponent<Inventory>();
     Inventory.OnPlayerInventoryChanged += UpdateSlots;
     CreateSlots();
+  }
+  public override void OnOpen()
+  {
     UpdateSlots();
-
   }
 
+  public override void OnClose()
+  {
+
+  }
   private void CreateSlots()
   {
     playerInventory = GameObject.FindGameObjectWithTag("Player").GetComponent<Inventory>();