feat: added spaceship drop ramp to board

lib/game/components/components.dart

@@ -16,4 +16,5 @@ export 'ramp_opening.dart';
 export 'round_bumper.dart';
 export 'score_points.dart';
 export 'spaceship.dart';
+export 'spaceship_drop_ramp.dart';
 export 'wall.dart';

lib/game/components/layer.dart

@@ -58,6 +58,9 @@ enum Layer {
 
   /// Collide only with Spaceship group elements.
   spaceship,
+
+  /// Collide only with Spaceship drop group elements.
+  spaceship_drop,
 }
 
 /// {@template layer_mask_bits}
@@ -86,6 +89,8 @@ extension LayerMaskBits on Layer {
         return 0x0005;
       case Layer.spaceship:
         return 0x000A;
+      case Layer.spaceship_drop:
+        return 0x0004;
     }
   }
 }

lib/game/components/spaceship_drop_ramp.dart

@@ -0,0 +1,72 @@
+import 'dart:math' as math;
+import 'dart:ui';
+
+import 'package:flame/components.dart';
+import 'package:flame_forge2d/flame_forge2d.dart';
+import 'package:pinball/flame/blueprint.dart';
+import 'package:pinball/game/game.dart';
+
+class SpaceshipDropRamp extends Forge2DBlueprint {
+  @override
+  void build() {
+    final position = Vector2(
+      PinballGame.boardBounds.left + 23,
+      PinballGame.boardBounds.center.dy + 25,
+    );
+
+    addAllContactCallback([
+      SpaceshipHoleBallContactCallback(),
+      SpaceshipEntranceBallContactCallback(),
+    ]);
+
+    final curvedPath = Pathway.bezierCurve(
+      color: Color.fromARGB(255, 226, 226, 218),
+      width: 5,
+      rotation: 230 * math.pi / 180,
+      controlPoints: [
+        Vector2(0, 0),
+        Vector2(0, 30),
+        Vector2(30, 0),
+        Vector2(30, 30),
+      ],
+    )..layer = Layer.spaceship_drop;
+
+    addAll([
+      curvedPath..initialPosition = position,
+    ]);
+  }
+}
+
+class SpaceshipRampEntrance extends RampOpening {
+  /// {@macro spaceship_ramp_entrance}
+  SpaceshipRampEntrance()
+      : super(
+          pathwayLayer: Layer.spaceship_drop,
+          orientation: RampOrientation.up,
+        ) {
+    layer = Layer.spaceship_drop;
+  }
+
+  @override
+  Shape get shape {
+    const radius = Spaceship.radius * 2;
+    return PolygonShape();
+  }
+}
+
+class SpaceshipRampExit extends RampOpening {
+  /// {@macro spaceship_ramp_entrance}
+  SpaceshipRampExit()
+      : super(
+          pathwayLayer: Layer.spaceship_drop,
+          orientation: RampOrientation.down,
+        ) {
+    layer = Layer.spaceship_drop;
+  }
+
+  @override
+  Shape get shape {
+    const radius = Spaceship.radius * 2;
+    return PolygonShape();
+  }
+}

lib/game/pinball_game.dart

@@ -83,6 +83,8 @@ class PinballGame extends Forge2DGame
   }
 
   Future<void> _addPaths() async {
+    unawaited(addFromBlueprint(SpaceshipDropRamp()));
+
     final jetpackRamp = JetpackRamp(
       position: Vector2(
         PinballGame.boardBounds.left + 40.5,