Fix ASCII rasterizer scaling for CLI

Signed-off-by: Hans Kokx <hans.d.kokx@gmail.com>

apps/wolf_3d_gui/lib/screens/game_screen.dart

@@ -54,6 +54,27 @@ class _GameScreenState extends State<GameScreen> {
               ? WolfAsciiRenderer(engine: _engine)
               : WolfFlutterRenderer(engine: _engine),
 
+          if (!_engine.isInitialized)
+            Container(
+              color: Colors.black,
+              child: const Center(
+                child: Column(
+                  mainAxisSize: MainAxisSize.min,
+                  children: [
+                    CircularProgressIndicator(color: Colors.teal),
+                    SizedBox(height: 20),
+                    Text(
+                      "GET PSYCHED!",
+                      style: TextStyle(
+                        color: Colors.teal,
+                        fontFamily: 'monospace',
+                      ),
+                    ),
+                  ],
+                ),
+              ),
+            ),
+
           // TAB listener
           Focus(
             autofocus: true,