feat: included FlutterSignPost

lib/game/components/flutter_forest.dart

@@ -43,6 +43,8 @@ class FlutterForest extends Component
   Future<void> onLoad() async {
     gameRef.addContactCallback(DashNestBumperBallContactCallback());
 
+    final signPost = FlutterSignPost()..initialPosition = Vector2(8.35, 58.3);
+
     // TODO(alestiago): adjust positioning once sprites are added.
     final smallLeftNest = SmallDashNestBumper(id: 'small_left_nest')
       ..initialPosition = Vector2(8.95, 51.95);
@@ -52,6 +54,7 @@ class FlutterForest extends Component
       ..initialPosition = Vector2(18.55, 59.35);
 
     await addAll([
+      signPost,
       smallLeftNest,
       smallRightNest,
       bigNest,

packages/pinball_components/lib/src/components/components.dart

@@ -1,5 +1,6 @@
 export 'ball.dart';
 export 'fire_effect.dart';
+export 'flutter_sign_post.dart';
 export 'initial_position.dart';
 export 'layer.dart';
 export 'shapes/shapes.dart';

packages/pinball_components/lib/src/components/flutter_sign_post.dart

@@ -0,0 +1,40 @@
+import 'package:flame/components.dart';
+import 'package:flame_forge2d/flame_forge2d.dart';
+import 'package:flutter/material.dart';
+import 'package:pinball_components/pinball_components.dart';
+
+/// {@template flutter_sign_post}
+/// A sign, found at the FlutterForest.
+/// {@endtemplate}
+// TODO(alestiago): Revisit doc comment if FlutterForest is moved to package.
+class FlutterSignPost extends BodyComponent with InitialPosition {
+  Future<void> _loadSprite() async {
+    final sprite = await gameRef.loadSprite(
+      Assets.images.flutterSignPost.keyName,
+    );
+    final spriteComponent = SpriteComponent(
+      sprite: sprite,
+      size: Vector2(8.8, 16.5),
+      anchor: Anchor.bottomCenter,
+    )..position = Vector2(0.65, 0.45);
+    await add(spriteComponent);
+  }
+
+  @override
+  Future<void> onLoad() async {
+    await super.onLoad();
+    paint = Paint()
+      ..color = Colors.blue.withOpacity(0.5)
+      ..style = PaintingStyle.fill;
+    await _loadSprite();
+  }
+
+  @override
+  Body createBody() {
+    final shape = CircleShape()..radius = 0.25;
+    final fixtureDef = FixtureDef(shape);
+    final bodyDef = BodyDef()..position = initialPosition;
+
+    return world.createBody(bodyDef)..createFixture(fixtureDef);
+  }
+}