feat: Enhance rendering with pushwall and enemy color support in ASCII, Sixel, and Software renderers

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

packages/wolf_3d_dart/test/rendering/map_overlay_renderer_test.dart

@@ -1,6 +1,7 @@
 import 'dart:typed_data';
 
 import 'package:test/test.dart';
+import 'package:wolf_3d_dart/src/entities/entities/enemies/guard.dart';
 import 'package:wolf_3d_dart/wolf_3d_data_types.dart';
 import 'package:wolf_3d_dart/wolf_3d_engine.dart';
 import 'package:wolf_3d_dart/wolf_3d_input.dart';
@@ -11,6 +12,16 @@ void main() {
     test('software renderer draws fullscreen map overlay when enabled', () {
       final engine = _buildEngine();
       engine.init();
+      expect(engine.pushwallManager.pushwalls.containsKey('5,5'), isTrue);
+      engine.entities.add(
+        Guard(
+          x: 8.5,
+          y: 8.5,
+          angle: 0,
+          mapId: MapObject.guardStart,
+          difficulty: Difficulty.medium,
+        ),
+      );
 
       final renderer = SoftwareRenderer();
       final frameNormal = renderer.render(engine);
@@ -28,6 +39,8 @@ void main() {
       }
 
       expect(changedPixels, greaterThan(mapPixels.length ~/ 5));
+      expect(mapPixels.contains(ColorPalette.vga32Bit[6]), isTrue);
+      expect(mapPixels.contains(ColorPalette.vga32Bit[12]), isTrue);
       expect(mapPixels.contains(ColorPalette.vga32Bit[10]), isTrue);
     });
   });
@@ -57,7 +70,9 @@ WolfEngine _buildEngine() {
   _fillBoundaries(wallGrid, 2);
   wallGrid[2][4] = 1;
   wallGrid[2][5] = 90;
+  wallGrid[5][5] = 1;
   objectGrid[2][2] = MapObject.playerEast;
+  objectGrid[5][5] = MapObject.pushwallTrigger;
 
   return WolfEngine(
     data: WolfensteinData(