Optimize raycast painter and fix rotation

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

lib/features/renderer/renderer.dart

@@ -183,6 +183,13 @@ class _WolfRendererState extends State<WolfRenderer>
 
     // 2. Explicit State Updates
     player.updateWeaponSwitch();
+
+    player.angle += inputResult.dAngle;
+
+    // Keep the angle neatly clamped between 0 and 2*PI
+    if (player.angle < 0) player.angle += 2 * math.pi;
+    if (player.angle >= 2 * math.pi) player.angle -= 2 * math.pi;
+
     _applyMovementAndCollision(inputResult.movement);
     _updateEntities(elapsed);