Resizable window

src/Map/MapManager.cs

@@ -12,7 +12,7 @@ public class MapManager
     private readonly MapEffect _mapEffect;
     private readonly MapRenderer _mapRenderer;
 
-    private readonly RenderTarget2D _shadowTarget;
+    private RenderTarget2D _shadowTarget;
 
     private readonly PostProcessRenderer _postProcessRenderer;
 
@@ -701,4 +701,17 @@ public void Draw()
         DrawLand(minTileX, minTileY, maxTileX, maxTileY);
         _mapRenderer.End();
     }
+
+    public void OnWindowsResized(GameWindow window) {
+        _camera.ScreenSize = window.ClientBounds;
+        _camera.Update();
+
+        _shadowTarget = new RenderTarget2D(
+            _gfxDevice,
+            _gfxDevice.PresentationParameters.BackBufferWidth * 2,
+            _gfxDevice.PresentationParameters.BackBufferHeight * 2,
+            false,
+            SurfaceFormat.Single,
+            DepthFormat.Depth24);
+    }
 }

src/UOGame.cs

@@ -26,6 +26,9 @@ public UOGame()
         _gdm.PreparingDeviceSettings += (sender, e) => { e.GraphicsDeviceInformation.PresentationParameters.RenderTargetUsage = RenderTargetUsage.DiscardContents; };
 
         IsMouseVisible = true;
+
+        Window.AllowUserResizing = true;
+        Window.ClientSizeChanged += OnWindowResized;
     }
 
     protected override void Initialize()
@@ -81,4 +84,10 @@ protected override void Draw(GameTime gameTime)
 
         base.Draw(gameTime);
     }
+
+
+    private void OnWindowResized(object? sender, EventArgs e) {
+        if (sender is GameWindow window) 
+            _mapManager.OnWindowsResized(window);
+    }
 }