refactor: changed shape points

lib/game/components/board.dart

@@ -12,22 +12,15 @@ class Board extends Component {
 
   @override
   Future<void> onLoad() async {
-    // TODO(alestiago): adjust positioning once sprites are added.
-    final bottomGroup = _BottomGroup(
-      position: Vector2(
-        PinballGame.boardBounds.center.dx,
-        PinballGame.boardBounds.bottom + 10,
-      ),
-      spacing: 2,
-    );
+    final bottomGroup = _BottomGroup();
 
     final flutterForest = FlutterForest();
 
     // TODO(alestiago): adjust positioning to real design.
     final dino = ChromeDino()
       ..initialPosition = Vector2(
-        PinballGame.boardBounds.center.dx + 25,
-        PinballGame.boardBounds.center.dy + 10,
+        BoardDimensions.bounds.center.dx + 25,
+        BoardDimensions.bounds.center.dy + 10,
       );
 
     await addAll([
@@ -46,27 +39,15 @@ class Board extends Component {
 // TODO(alestiago): Consider renaming once entire Board is defined.
 class _BottomGroup extends Component {
   /// {@macro bottom_group}
-  _BottomGroup({
-    required this.position,
-    required this.spacing,
-  });
-
-  /// The amount of space between the line of symmetry.
-  final double spacing;
-
-  /// The position of this [_BottomGroup].
-  final Vector2 position;
+  _BottomGroup();
 
   @override
   Future<void> onLoad() async {
-    final spacing = this.spacing + Flipper.size.x / 2;
     final rightSide = _BottomGroupSide(
       side: BoardSide.right,
-      position: position + Vector2(spacing, 0),
     );
     final leftSide = _BottomGroupSide(
       side: BoardSide.left,
-      position: position + Vector2(-spacing, 0),
     );
 
     await addAll([rightSide, leftSide]);
@@ -82,35 +63,28 @@ class _BottomGroupSide extends Component {
   /// {@macro bottom_group_side}
   _BottomGroupSide({
     required BoardSide side,
-    required Vector2 position,
-  })  : _side = side,
-        _position = position;
+  }) : _side = side;
 
   final BoardSide _side;
 
-  final Vector2 _position;
-
   @override
   Future<void> onLoad() async {
     final direction = _side.direction;
+    final centerXAdjustment = _side.isLeft ? 0 : -6.5;
 
     final flipper = ControlledFlipper(
       side: _side,
-    )..initialPosition = _position;
-
+    )..initialPosition = Vector2((11.0 * direction) + centerXAdjustment, -42.4);
     final baseboard = Baseboard(side: _side)
-      ..initialPosition = _position +
-          Vector2(
-            (Baseboard.size.x / 1.6 * direction),
-            Baseboard.size.y - 2,
+      ..initialPosition = Vector2(
+        (25.58 * direction) + centerXAdjustment,
+        -28.69,
       );
-
     final kicker = Kicker(
       side: _side,
-    )..initialPosition = _position +
-        Vector2(
-          (Flipper.size.x) * direction,
-          Flipper.size.y + Kicker.size.y,
+    )..initialPosition = Vector2(
+        (22.0 * direction) + centerXAdjustment,
+        -26,
       );
 
     await addAll([flipper, baseboard, kicker]);

lib/game/components/chrome_dino.dart

@@ -31,7 +31,7 @@ class ChromeDino extends BodyComponent with InitialPosition {
       anchor: anchor,
     );
     final joint = _ChromeDinoJoint(jointDef);
-    world.createJoint2(joint);
+    world.createJoint(joint);
 
     return joint;
   }
@@ -154,15 +154,3 @@ class _ChromeDinoJoint extends RevoluteJoint {
     setMotorSpeed(-motorSpeed);
   }
 }
-
-extension on World {
-  // TODO(alestiago): Remove once Forge2D supports custom joints.
-  void createJoint2(Joint joint) {
-    assert(!isLocked, '');
-
-    joints.add(joint);
-
-    joint.bodyA.joints.add(joint);
-    joint.bodyB.joints.add(joint);
-  }
-}

lib/game/components/components.dart

@@ -1,4 +1,3 @@
-export 'baseboard.dart';
 export 'board.dart';
 export 'bonus_word.dart';
 export 'chrome_dino.dart';

lib/game/components/jetpack_ramp.dart

@@ -13,8 +13,8 @@ class Jetpack extends Forge2DBlueprint {
   @override
   void build(_) {
     final position = Vector2(
-      PinballGame.boardBounds.left + 40.5,
-      PinballGame.boardBounds.top - 31.5,
+      BoardDimensions.bounds.left + 40.5,
+      BoardDimensions.bounds.top - 31.5,
     );
 
     addAllContactCallback([

lib/game/components/launcher_ramp.dart

@@ -13,8 +13,8 @@ class Launcher extends Forge2DBlueprint {
   @override
   void build(_) {
     final position = Vector2(
-      PinballGame.boardBounds.right - 31.3,
-      PinballGame.boardBounds.bottom + 33,
+      BoardDimensions.bounds.right - 31.3,
+      BoardDimensions.bounds.bottom + 33,
     );
 
     addAllContactCallback([
@@ -67,8 +67,8 @@ class LauncherRamp extends BodyComponent with InitialPosition, Layered {
 
     final rightStraightShape = EdgeShape()
       ..set(
-        startPosition..rotate(PinballGame.boardPerspectiveAngle),
-        endPosition..rotate(PinballGame.boardPerspectiveAngle),
+        startPosition..rotate(BoardDimensions.perspectiveAngle),
+        endPosition..rotate(BoardDimensions.perspectiveAngle),
       );
     final rightStraightFixtureDef = FixtureDef(rightStraightShape);
     fixturesDef.add(rightStraightFixtureDef);

lib/game/components/plunger.dart

@@ -1,7 +1,6 @@
 import 'package:flame/components.dart';
 import 'package:flame_forge2d/flame_forge2d.dart';
 import 'package:flutter/services.dart';
-import 'package:pinball/game/game.dart';
 import 'package:pinball_components/pinball_components.dart';
 
 /// {@template plunger}
@@ -26,10 +25,10 @@ class Plunger extends BodyComponent with KeyboardHandler, InitialPosition {
         1.35,
         0.5,
         Vector2.zero(),
-        PinballGame.boardPerspectiveAngle,
+        BoardDimensions.perspectiveAngle,
       );
 
-    final fixtureDef = FixtureDef(shape)..density = 20;
+    final fixtureDef = FixtureDef(shape)..density = 80;
 
     final bodyDef = BodyDef()
       ..position = initialPosition
@@ -50,7 +49,7 @@ class Plunger extends BodyComponent with KeyboardHandler, InitialPosition {
   /// The velocity's magnitude depends on how far the [Plunger] has been pulled
   /// from its original [initialPosition].
   void _release() {
-    final velocity = (initialPosition.y - body.position.y) * 4;
+    final velocity = (initialPosition.y - body.position.y) * 5;
     body.linearVelocity = Vector2(0, velocity);
   }
 
@@ -127,12 +126,12 @@ class PlungerAnchorPrismaticJointDef extends PrismaticJointDef {
       plunger.body,
       anchor.body,
       anchor.body.position,
-      Vector2(18.6, PinballGame.boardBounds.height),
+      Vector2(18.6, BoardDimensions.bounds.height),
     );
     enableLimit = true;
     lowerTranslation = double.negativeInfinity;
     enableMotor = true;
-    motorSpeed = 80;
+    motorSpeed = 1000;
     maxMotorForce = motorSpeed;
     collideConnected = true;
   }

lib/game/components/wall.dart

@@ -44,13 +44,12 @@ class Wall extends BodyComponent {
 
 /// Create top, left, and right [Wall]s for the game board.
 List<Wall> createBoundaries(Forge2DGame game) {
-  final topLeft =
-      PinballGame.boardBounds.topLeft.toVector2() + Vector2(18.6, 0);
-  final bottomRight = PinballGame.boardBounds.bottomRight.toVector2();
+  final topLeft = BoardDimensions.bounds.topLeft.toVector2() + Vector2(18.6, 0);
+  final bottomRight = BoardDimensions.bounds.bottomRight.toVector2();
 
   final topRight =
-      PinballGame.boardBounds.topRight.toVector2() - Vector2(18.6, 0);
-  final bottomLeft = PinballGame.boardBounds.bottomLeft.toVector2();
+      BoardDimensions.bounds.topRight.toVector2() - Vector2(18.6, 0);
+  final bottomLeft = BoardDimensions.bounds.bottomLeft.toVector2();
 
   return [
     Wall(start: topLeft, end: topRight),
@@ -69,8 +68,8 @@ class BottomWall extends Wall {
   /// {@macro bottom_wall}
   BottomWall()
       : super(
-          start: PinballGame.boardBounds.bottomLeft.toVector2(),
-          end: PinballGame.boardBounds.bottomRight.toVector2(),
+          start: BoardDimensions.bounds.bottomLeft.toVector2(),
+          end: BoardDimensions.bounds.bottomRight.toVector2(),
         );
 }
 
@@ -95,65 +94,59 @@ class DinoTopWall extends BodyComponent with InitialPosition {
   List<FixtureDef> _createFixtureDefs() {
     final fixturesDef = <FixtureDef>[];
 
-    final wallPerspectiveAngle =
-        PinballGame.boardPerspectiveAngle + math.pi / 2;
-
-    final bottomCurveControlPoints = [
-      Vector2(-8, 0),
-      Vector2(-9, 1.5),
-      Vector2(-8.5, 4),
-      Vector2(-6.6, 7.5),
-    ];
-    final bottomCurveShape = BezierCurveShape(
-      controlPoints: bottomCurveControlPoints,
-    )..rotate(wallPerspectiveAngle);
-    fixturesDef.add(FixtureDef(bottomCurveShape));
-
-    final mediumCurveControlPoints = [
-      bottomCurveControlPoints.last.clone(),
-      Vector2(-4.3, 7),
-      Vector2(-4.8, 4.2),
-      Vector2(-1, 5),
+    final topStraightControlPoints = [
+      Vector2(29.5, 35.1),
+      Vector2(28.4, 35.1),
     ];
-    final mediumCurveShape = BezierCurveShape(
-      controlPoints: mediumCurveControlPoints,
-    )..rotate(wallPerspectiveAngle);
-    fixturesDef.add(FixtureDef(mediumCurveShape));
+    final topStraightShape = EdgeShape()
+      ..set(
+        topStraightControlPoints.first,
+        topStraightControlPoints.last,
+      );
+    final topStraightFixtureDef = FixtureDef(topStraightShape);
+    fixturesDef.add(topStraightFixtureDef);
 
     final topCurveControlPoints = [
-      mediumCurveControlPoints.last.clone(),
-      Vector2(1, 8.7),
-      Vector2(6, 9.3),
-      Vector2(13.5, 1),
+      Vector2(28.4, 35.1),
+      Vector2(18, 26.38),
+      Vector2(26.6, 20.5),
     ];
     final topCurveShape = BezierCurveShape(
       controlPoints: topCurveControlPoints,
-    )..rotate(wallPerspectiveAngle);
+    );
     fixturesDef.add(FixtureDef(topCurveShape));
 
-    final topStraightPoints = [
-      topCurveControlPoints.last.clone(),
-      Vector2(13.5, 0),
+    final middleCurveControlPoints = [
+      Vector2(26.6, 20.5),
+      Vector2(27.5, 20.1),
+      Vector2(26.6, 18.8),
     ];
-    final topStraightShape = EdgeShape()
-      ..set(
-        topStraightPoints.first.clone()..rotate(wallPerspectiveAngle),
-        topStraightPoints.last.clone()..rotate(wallPerspectiveAngle),
+    final middleCurveShape = BezierCurveShape(
+      controlPoints: middleCurveControlPoints,
     );
-    final topStraightFixtureDef = FixtureDef(topStraightShape);
-    fixturesDef.add(topStraightFixtureDef);
+    fixturesDef.add(FixtureDef(middleCurveShape));
+
+    final bottomCurveControlPoints = [
+      Vector2(26.6, 18.8),
+      Vector2(21.15, 17.1),
+      Vector2(24.6, 15.1),
+    ];
+    final bottomCurveShape = BezierCurveShape(
+      controlPoints: bottomCurveControlPoints,
+    );
+    fixturesDef.add(FixtureDef(bottomCurveShape));
 
-    final wallStraightPoints = [
-      bottomCurveControlPoints.first.clone(),
-      topStraightPoints.last.clone(),
+    final bottomStraightControlPoints = [
+      Vector2(24.6, 15.1),
+      Vector2(31.8, 14.1),
     ];
-    final wallStraightShape = EdgeShape()
+    final bottomStraightShape = EdgeShape()
       ..set(
-        wallStraightPoints.first..rotate(wallPerspectiveAngle),
-        wallStraightPoints.last..rotate(wallPerspectiveAngle),
+        bottomStraightControlPoints.first,
+        bottomStraightControlPoints.last,
       );
-    final wallStraightFixtureDef = FixtureDef(wallStraightShape);
-    fixturesDef.add(wallStraightFixtureDef);
+    final bottomStraightFixtureDef = FixtureDef(bottomStraightShape);
+    fixturesDef.add(bottomStraightFixtureDef);
 
     return fixturesDef;
   }

lib/game/game_assets.dart

@@ -11,6 +11,8 @@ extension PinballGameAssetsX on PinballGame {
       images.load(components.Assets.images.flutterSignPost.keyName),
       images.load(components.Assets.images.flipper.left.keyName),
       images.load(components.Assets.images.flipper.right.keyName),
+      images.load(components.Assets.images.baseboard.left.keyName),
+      images.load(components.Assets.images.baseboard.right.keyName),
       images.load(Assets.images.components.background.path),
     ]);
   }

lib/game/pinball_game.dart

@@ -1,6 +1,5 @@
 // ignore_for_file: public_member_api_docs
 import 'dart:async';
-import 'dart:math' as math;
 
 import 'package:flame/components.dart';
 import 'package:flame/extensions.dart';
@@ -22,15 +21,6 @@ class PinballGame extends Forge2DGame
 
   late final Plunger plunger;
 
-  static final boardSize = Vector2(101.6, 143.8);
-  static final boardBounds = Rect.fromCenter(
-    center: Offset.zero,
-    width: boardSize.x,
-    height: -boardSize.y,
-  );
-  static final boardPerspectiveAngle =
-      -math.atan(18.6 / PinballGame.boardBounds.height);
-
   @override
   void onAttach() {
     super.onAttach();
@@ -83,7 +73,8 @@ class PinballGame extends Forge2DGame
 
   Future<void> _addPlunger() async {
     plunger = Plunger(compressionDistance: 29)
-      ..initialPosition = boardBounds.center.toVector2() + Vector2(41.5, -49);
+      ..initialPosition =
+          BoardDimensions.bounds.center.toVector2() + Vector2(41.5, -49);
     await add(plunger);
   }
 
@@ -91,8 +82,8 @@ class PinballGame extends Forge2DGame
     await add(
       BonusWord(
         position: Vector2(
-          boardBounds.center.dx - 3.07,
-          boardBounds.center.dy - 2.4,
+          BoardDimensions.bounds.center.dx - 3.07,
+          BoardDimensions.bounds.center.dy - 2.4,
         ),
       ),
     );

packages/pinball_components/lib/gen/assets.gen.dart

@@ -13,6 +13,8 @@ class $AssetsImagesGen {
   /// File path: assets/images/ball.png
   AssetGenImage get ball => const AssetGenImage('assets/images/ball.png');
 
+  $AssetsImagesBaseboardGen get baseboard => const $AssetsImagesBaseboardGen();
+
   $AssetsImagesFlipperGen get flipper => const $AssetsImagesFlipperGen();
 
   /// File path: assets/images/flutter_sign_post.png
@@ -28,6 +30,18 @@ class $AssetsImagesGen {
       const AssetGenImage('assets/images/spaceship_saucer.png');
 }
 
+class $AssetsImagesBaseboardGen {
+  const $AssetsImagesBaseboardGen();
+
+  /// File path: assets/images/baseboard/left.png
+  AssetGenImage get left =>
+      const AssetGenImage('assets/images/baseboard/left.png');
+
+  /// File path: assets/images/baseboard/right.png
+  AssetGenImage get right =>
+      const AssetGenImage('assets/images/baseboard/right.png');
+}
+
 class $AssetsImagesFlipperGen {
   const $AssetsImagesFlipperGen();
 

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

@@ -23,13 +23,14 @@ class Ball<T extends Forge2DGame> extends BodyComponent<T>
   }
 
   /// The size of the [Ball]
-  static final Vector2 size = Vector2.all(3);
+  static final Vector2 size = Vector2.all(4.5);
 
   /// The base [Color] used to tint this [Ball]
   final Color baseColor;
 
   double _boostTimer = 0;
   static const _boostDuration = 2.0;
+  late SpriteComponent _spriteComponent;
 
   @override
   Future<void> onLoad() async {
@@ -37,9 +38,9 @@ class Ball<T extends Forge2DGame> extends BodyComponent<T>
     final sprite = await gameRef.loadSprite(Assets.images.ball.keyName);
     final tint = baseColor.withOpacity(0.5);
     await add(
-      SpriteComponent(
+      _spriteComponent = SpriteComponent(
         sprite: sprite,
-        size: size,
+        size: size * 1.15,
         anchor: Anchor.center,
       )..tint(tint),
     );
@@ -88,6 +89,8 @@ class Ball<T extends Forge2DGame> extends BodyComponent<T>
 
       unawaited(gameRef.add(effect));
     }
+
+    _rescale();
   }
 
   /// Applies a boost on this [Ball].
@@ -95,4 +98,18 @@ class Ball<T extends Forge2DGame> extends BodyComponent<T>
     body.applyLinearImpulse(impulse);
     _boostTimer = _boostDuration;
   }
+
+  void _rescale() {
+    final boardHeight = BoardDimensions.size.y;
+    const maxShrinkAmount = BoardDimensions.perspectiveShrinkFactor;
+
+    final adjustedYPosition = body.position.y + (boardHeight / 2);
+
+    final scaleFactor = ((boardHeight - adjustedYPosition) /
+            BoardDimensions.shrinkAdjustedHeight) +
+        maxShrinkAmount;
+
+    body.fixtures.first.shape.radius = (size.x / 2) * scaleFactor;
+    _spriteComponent.scale = Vector2.all(scaleFactor);
+  }
 }

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

@@ -1,5 +1,6 @@
 import 'dart:math' as math;
 
+import 'package:flame/components.dart';
 import 'package:flame_forge2d/flame_forge2d.dart';
 import 'package:pinball_components/pinball_components.dart';
 
@@ -12,9 +13,6 @@ class Baseboard extends BodyComponent with InitialPosition {
     required BoardSide side,
   }) : _side = side;
 
-  /// The size of the [Baseboard].
-  static final size = Vector2(24.2, 13.5);
-
   /// Whether the [Baseboard] is on the left or right side of the board.
   final BoardSide _side;
 
@@ -24,50 +22,55 @@ class Baseboard extends BodyComponent with InitialPosition {
     final arcsAngle = -1.11 * direction;
     const arcsRotation = math.pi / 2.08;
 
+    final pegBumperShape = CircleShape()..radius = 0.7;
+    pegBumperShape.position.setValues(11.11 * direction, 7.15);
+    final pegBumperFixtureDef = FixtureDef(pegBumperShape);
+    fixturesDef.add(pegBumperFixtureDef);
+
     final topCircleShape = CircleShape()..radius = 0.7;
-    topCircleShape.position.setValues(11.39 * direction, 6.05);
+    topCircleShape.position.setValues(9.71 * direction, 4.95);
     final topCircleFixtureDef = FixtureDef(topCircleShape);
     fixturesDef.add(topCircleFixtureDef);
 
     final innerEdgeShape = EdgeShape()
       ..set(
-        Vector2(10.86 * direction, 6.45),
-        Vector2(6.96 * direction, 0.25),
+        Vector2(9.01 * direction, 5.35),
+        Vector2(5.29 * direction, -0.95),
       );
     final innerEdgeShapeFixtureDef = FixtureDef(innerEdgeShape);
     fixturesDef.add(innerEdgeShapeFixtureDef);
 
     final outerEdgeShape = EdgeShape()
       ..set(
-        Vector2(11.96 * direction, 5.85),
-        Vector2(5.48 * direction, -4.85),
+        Vector2(10.41 * direction, 4.75),
+        Vector2(3.79 * direction, -5.95),
       );
     final outerEdgeShapeFixtureDef = FixtureDef(outerEdgeShape);
     fixturesDef.add(outerEdgeShapeFixtureDef);
 
     final upperArcShape = ArcShape(
-      center: Vector2(1.76 * direction, 3.25),
+      center: Vector2(0.09 * direction, 2.15),
       arcRadius: 6.1,
       angle: arcsAngle,
       rotation: arcsRotation,
     );
-    final upperArcFixtureDefs = FixtureDef(upperArcShape);
-    fixturesDef.add(upperArcFixtureDefs);
+    final upperArcFixtureDef = FixtureDef(upperArcShape);
+    fixturesDef.add(upperArcFixtureDef);
 
     final lowerArcShape = ArcShape(
-      center: Vector2(1.85 * direction, -2.15),
+      center: Vector2(0.09 * direction, -3.35),
       arcRadius: 4.5,
       angle: arcsAngle,
       rotation: arcsRotation,
     );
-    final lowerArcFixtureDefs = FixtureDef(lowerArcShape);
-    fixturesDef.add(lowerArcFixtureDefs);
+    final lowerArcFixtureDef = FixtureDef(lowerArcShape);
+    fixturesDef.add(lowerArcFixtureDef);
 
     final bottomRectangle = PolygonShape()
       ..setAsBox(
-        7,
+        6.8,
         2,
-        Vector2(-5.14 * direction, -4.75),
+        Vector2(-6.3 * direction, -5.85),
         0,
       );
     final bottomRectangleFixtureDef = FixtureDef(bottomRectangle);
@@ -76,11 +79,31 @@ class Baseboard extends BodyComponent with InitialPosition {
     return fixturesDef;
   }
 
+  @override
+  Future<void> onLoad() async {
+    await super.onLoad();
+
+    final sprite = await gameRef.loadSprite(
+      (_side.isLeft)
+          ? Assets.images.baseboard.left.keyName
+          : Assets.images.baseboard.right.keyName,
+    );
+
+    await add(
+      SpriteComponent(
+        sprite: sprite,
+        size: Vector2(27.5, 17.9),
+        anchor: Anchor.center,
+        position: Vector2(_side.isLeft ? 0.4 : -0.4, 0),
+      ),
+    );
+
+    renderBody = false;
+  }
+
   @override
   Body createBody() {
-    // TODO(allisonryan0002): share sweeping angle with flipper when components
-    // are grouped.
-    const angle = math.pi / 5;
+    const angle = 37.1 * (math.pi / 180);
 
     final bodyDef = BodyDef()
       ..position = initialPosition

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

@@ -0,0 +1,29 @@
+import 'dart:math' as math;
+
+import 'package:flame/extensions.dart';
+
+/// {@template board_dimensions}
+/// Contains various board properties and dimensions for global use.
+/// {@endtemplate}
+// TODO(allisonryan0002): consider alternatives for global dimensions.
+class BoardDimensions {
+  /// Width and height of the board.
+  static final size = Vector2(101.6, 143.8);
+
+  /// [Rect] for easier access to board boundaries.
+  static final bounds = Rect.fromCenter(
+    center: Offset.zero,
+    width: size.x,
+    height: -size.y,
+  );
+
+  /// 3D perspective angle of the board in radians.
+  static final perspectiveAngle = -math.atan(18.6 / bounds.height);
+
+  /// Factor the board shrinks by from the closest point to the farthest.
+  static const perspectiveShrinkFactor = 0.63;
+
+  /// Board height based on the [perspectiveShrinkFactor].
+  static final shrinkAdjustedHeight =
+      (1 / (1 - perspectiveShrinkFactor)) * size.y;
+}

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

@@ -1,4 +1,6 @@
 export 'ball.dart';
+export 'baseboard.dart';
+export 'board_dimensions.dart';
 export 'board_side.dart';
 export 'fire_effect.dart';
 export 'flipper.dart';

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

@@ -68,7 +68,7 @@ class Flipper extends BodyComponent with KeyboardHandler, InitialPosition {
       anchor: anchor,
     );
     final joint = _FlipperJoint(jointDef);
-    world.createJoint2(joint);
+    world.createJoint(joint);
     unawaited(mounted.whenComplete(joint.unlock));
   }
 
@@ -219,15 +219,3 @@ class _FlipperJoint extends RevoluteJoint {
     setLimits(-angle, angle);
   }
 }
-
-// TODO(alestiago): Remove once Forge2D supports custom joints.
-extension on World {
-  void createJoint2(Joint joint) {
-    assert(!isLocked, '');
-
-    joints.add(joint);
-
-    joint.bodyA.joints.add(joint);
-    joint.bodyB.joints.add(joint);
-  }
-}

packages/pinball_components/pubspec.yaml

@@ -26,6 +26,7 @@ flutter:
   generate: true
   assets:
     - assets/images/
+    - assets/images/baseboard/
     - assets/images/flipper/
 
 flutter_gen:

packages/pinball_components/sandbox/lib/main.dart

@@ -6,7 +6,6 @@
 // https://opensource.org/licenses/MIT.
 import 'package:dashbook/dashbook.dart';
 import 'package:flutter/material.dart';
-import 'package:sandbox/stories/effects/effects.dart';
 import 'package:sandbox/stories/spaceship/spaceship.dart';
 import 'package:sandbox/stories/stories.dart';
 
@@ -18,5 +17,6 @@ void main() {
   addEffectsStories(dashbook);
   addFlipperStories(dashbook);
   addSpaceshipStories(dashbook);
+  addBaseboardStories(dashbook);
   runApp(dashbook);
 }

packages/pinball_components/sandbox/lib/stories/baseboard/baseboard.dart

@@ -0,0 +1,15 @@
+import 'package:dashbook/dashbook.dart';
+import 'package:flame/game.dart';
+import 'package:sandbox/common/common.dart';
+import 'package:sandbox/stories/baseboard/basic.dart';
+
+void addBaseboardStories(Dashbook dashbook) {
+  dashbook.storiesOf('Baseboard').add(
+        'Basic',
+        (context) => GameWidget(
+          game: BasicBaseboardGame(),
+        ),
+        codeLink: buildSourceLink('baseboard/basic.dart'),
+        info: BasicBaseboardGame.info,
+      );
+}

packages/pinball_components/sandbox/lib/stories/baseboard/basic.dart

@@ -0,0 +1,26 @@
+import 'package:flame_forge2d/flame_forge2d.dart';
+import 'package:pinball_components/pinball_components.dart';
+import 'package:sandbox/common/common.dart';
+
+class BasicBaseboardGame extends BasicGame {
+  static const info = '''
+      Basic example of how a Baseboard works.
+''';
+
+  @override
+  Future<void> onLoad() async {
+    await super.onLoad();
+
+    final center = screenToWorld(camera.viewport.canvasSize! / 2);
+
+    final leftBaseboard = Baseboard(side: BoardSide.left)
+      ..initialPosition = center - Vector2(25, 0);
+    final rightBaseboard = Baseboard(side: BoardSide.right)
+      ..initialPosition = center + Vector2(25, 0);
+
+    await addAll([
+      leftBaseboard,
+      rightBaseboard,
+    ]);
+  }
+}

packages/pinball_components/sandbox/lib/stories/stories.dart

@@ -1,3 +1,5 @@
 export 'ball/ball.dart';
+export 'baseboard/baseboard.dart';
+export 'effects/effects.dart';
 export 'flipper/flipper.dart';
 export 'layer/layer.dart';

packages/pinball_components/test/src/components/ball_test.dart

@@ -86,7 +86,7 @@ void main() {
 
           final fixture = ball.body.fixtures[0];
           expect(fixture.shape.shapeType, equals(ShapeType.circle));
-          expect(fixture.shape.radius, equals(1.5));
+          expect(fixture.shape.radius, equals(2.25));
         },
       );
 

packages/pinball_components/test/src/components/baseboard_test.dart

@@ -3,13 +3,16 @@
 import 'package:flame_forge2d/flame_forge2d.dart';
 import 'package:flame_test/flame_test.dart';
 import 'package:flutter_test/flutter_test.dart';
-import 'package:pinball/game/game.dart';
 import 'package:pinball_components/pinball_components.dart';
 
+import '../../helpers/helpers.dart';
+
 void main() {
   group('Baseboard', () {
+    // TODO(allisonryan0002): Add golden tests.
+
     TestWidgetsFlutterBinding.ensureInitialized();
-    final flameTester = FlameTester(Forge2DGame.new);
+    final flameTester = FlameTester(TestGame.new);
 
     flameTester.test(
       'loads correctly',
@@ -62,14 +65,14 @@ void main() {
 
     group('fixtures', () {
       flameTester.test(
-        'has six',
+        'has seven',
         (game) async {
           final baseboard = Baseboard(
             side: BoardSide.left,
           );
           await game.ensureAdd(baseboard);
 
-          expect(baseboard.body.fixtures.length, equals(6));
+          expect(baseboard.body.fixtures.length, equals(7));
         },
       );
     });

packages/pinball_components/test/src/components/board_dimensions_test.dart

@@ -0,0 +1,27 @@
+import 'package:flame/extensions.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:pinball_components/pinball_components.dart';
+
+void main() {
+  group('BoardDimensions', () {
+    test('has size', () {
+      expect(BoardDimensions.size, equals(Vector2(101.6, 143.8)));
+    });
+
+    test('has bounds', () {
+      expect(BoardDimensions.bounds, isNotNull);
+    });
+
+    test('has perspectiveAngle', () {
+      expect(BoardDimensions.perspectiveAngle, isNotNull);
+    });
+
+    test('has perspectiveShrinkFactor', () {
+      expect(BoardDimensions.perspectiveShrinkFactor, equals(0.63));
+    });
+
+    test('has shrinkAdjustedHeight', () {
+      expect(BoardDimensions.shrinkAdjustedHeight, isNotNull);
+    });
+  });
+}