feat: implementing GoogleLetter

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

@@ -0,0 +1,70 @@
+import 'package:flame/components.dart';
+import 'package:flame_forge2d/flame_forge2d.dart';
+import 'package:flutter/material.dart';
+import 'package:pinball_components/pinball_components.dart';
+
+class GoogleLetter extends BodyComponent with InitialPosition {
+  late final _GoogleLetterSprite _sprite;
+
+  void activate() => _sprite.activate();
+
+  void deactivate() => _sprite.deactivate();
+
+  @override
+  Future<void> onLoad() async {
+    await super.onLoad();
+    await add(_sprite = _GoogleLetterSprite.letter1());
+  }
+
+  @override
+  Body createBody() {
+    final shape = CircleShape()..radius = 1.85;
+    final fixtureDef = FixtureDef(shape)..isSensor = true;
+
+    final bodyDef = BodyDef()
+      ..position = initialPosition
+      ..userData = this
+      ..type = BodyType.static;
+
+    return world.createBody(bodyDef)..createFixture(fixtureDef);
+  }
+}
+
+class _GoogleLetterSprite extends SpriteComponent with HasGameRef {
+  _GoogleLetterSprite.letter1()
+      : _spritePath = Assets.images.googleWord.letter1.keyName;
+
+  _GoogleLetterSprite.letter2()
+      : _spritePath = Assets.images.googleWord.letter2.keyName;
+
+  _GoogleLetterSprite.letter3()
+      : _spritePath = Assets.images.googleWord.letter3.keyName;
+
+  _GoogleLetterSprite.letter4()
+      : _spritePath = Assets.images.googleWord.letter4.keyName;
+
+  _GoogleLetterSprite.letter5()
+      : _spritePath = Assets.images.googleWord.letter5.keyName;
+
+  final String _spritePath;
+
+  // TODO(alestiago): Correctly implement activate and deactivate once the
+  // assets are provided.
+  void activate() {
+    tint(Colors.green);
+  }
+
+  void deactivate() {
+    tint(Colors.red);
+  }
+
+  @override
+  Future<void> onLoad() async {
+    await super.onLoad();
+
+    final sprite = await gameRef.loadSprite(_spritePath);
+    this.sprite = sprite;
+    size = sprite.originalSize / 5;
+    anchor = Anchor.center;
+  }
+}