first commit

NitroxClient/GameLogic/HUD/NitroxPDATabManager.cs

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+using System.Collections.Generic;
+
+namespace NitroxClient.GameLogic.HUD;
+
+public class NitroxPDATabManager
+{
+    public readonly Dictionary<PDATab, NitroxPDATab> CustomTabs = new();
+    
+    private readonly Dictionary<string, Atlas.Sprite> tabSpritesByName = new();
+    private readonly Dictionary<string, TabSpriteLoadedEvent> spriteLoadedCallbackByName = new();
+
+    public NitroxPDATabManager()
+    {
+        void RegisterTab(NitroxPDATab nitroxTab)
+        {
+            CustomTabs.Add(nitroxTab.PDATabId, nitroxTab);
+        }
+        
+        RegisterTab(new PlayerListTab());
+    }
+
+    public void AddTabSprite(string spriteName, Atlas.Sprite sprite)
+    {
+        tabSpritesByName.Add(spriteName, sprite);
+        if (spriteLoadedCallbackByName.TryGetValue(spriteName, out TabSpriteLoadedEvent spriteLoadedEvent))
+        {
+            spriteLoadedEvent.Invoke(sprite);
+            spriteLoadedCallbackByName.Remove(spriteName);
+        }
+    }
+    
+    public bool TryGetTabSprite(string spriteName, out Atlas.Sprite sprite) => tabSpritesByName.TryGetValue(spriteName, out sprite);
+
+    public delegate void TabSpriteLoadedEvent(Atlas.Sprite sprite);
+    
+    public void SetSpriteLoadedCallback(string tabName, TabSpriteLoadedEvent callback)
+    {
+        if (!spriteLoadedCallbackByName.ContainsKey(tabName))
+        {
+            spriteLoadedCallbackByName.Add(tabName, callback);
+        }
+    }
+}