Add core game components including ConfigFileHandler, GameManager, SaveSystem, and UIManager

Autoloads/UIManager.cs

@@ -0,0 +1,65 @@
+using Godot;
+using Godot.Collections;
+
+namespace Mr.BrickAdventures.Autoloads;
+
+public partial class UIManager : Node
+{
+    [Export] public Array<Control> UiStack { get; set; } = new();
+    
+    [Signal] public delegate void ScreenPushedEventHandler(Control screen);
+    [Signal] public delegate void ScreenPoppedEventHandler(Control screen);
+
+    public void PushScreen(Control screen)
+    {
+        if (screen == null)
+        {
+            GD.PushError($"Cannot push a null screen.");
+            return;
+        }
+        
+        UiStack.Add(screen);
+        screen.Show();
+        screen.SetProcessInput(true);
+        screen.SetFocusMode(Control.FocusModeEnum.All);
+        screen.GrabFocus();
+        EmitSignalScreenPushed(screen);
+    }
+    
+    public void PopScreen()
+    {
+        if (UiStack.Count == 0)
+        {
+            GD.PushError($"Cannot pop screen from an empty stack.");
+            return;
+        }
+        
+        var top = (Control)UiStack[^1];
+        UiStack.RemoveAt(UiStack.Count - 1);
+        top.Hide();
+        top.SetProcessInput(false);
+        EmitSignalScreenPopped(top);
+        top.AcceptEvent();
+
+        if (UiStack.Count > 0) ((Control)UiStack[^1]).GrabFocus();
+    }
+    
+    public Control TopScreen() => UiStack.Count > 0 ? (Control)UiStack[^1] : null;
+    
+    public bool IsScreenOnTop(Control screen) => UiStack.Count > 0 && (Control)UiStack[^1] == screen;
+    
+    public bool IsVisibleOnStack(Control screen) => UiStack.Contains(screen) && screen.Visible;
+    
+    public void CloseAll()
+    {
+        while (UiStack.Count > 0)
+            PopScreen();
+    }
+
+    public static void HideAndDisable(Control screen)
+    {
+        screen.Hide();
+        screen.SetProcessInput(false);
+    }
+
+}