Support for nested inputs.

lib/src/core/core.dart

@@ -17,6 +17,7 @@ export 'package:rive/src/core/importers/keyed_object_importer.dart';
 export 'package:rive/src/core/importers/keyed_property_importer.dart';
 export 'package:rive/src/core/importers/layer_state_importer.dart';
 export 'package:rive/src/core/importers/linear_animation_importer.dart';
+export 'package:rive/src/core/importers/nested_state_machine_importer.dart';
 export 'package:rive/src/core/importers/state_machine_importer.dart';
 export 'package:rive/src/core/importers/state_machine_layer_importer.dart';
 export 'package:rive/src/core/importers/state_machine_listener_importer.dart';

lib/src/core/importers/nested_state_machine_importer.dart

@@ -0,0 +1,21 @@
+import 'package:rive/src/core/importers/artboard_import_stack_object.dart';
+import 'package:rive/src/rive_core/animation/nested_input.dart';
+import 'package:rive/src/rive_core/animation/nested_state_machine.dart';
+
+class NestedStateMachineImporter extends ArtboardImportStackObject {
+  final NestedStateMachine stateMachine;
+  NestedStateMachineImporter(this.stateMachine);
+
+  final List<NestedInput> _inputs = [];
+  void addNestedInput(NestedInput nestedInput) {
+    _inputs.add(nestedInput);
+  }
+
+  @override
+  bool resolve() {
+    for (final input in _inputs) {
+      input.parent = stateMachine;
+    }
+    return super.resolve();
+  }
+}

lib/src/generated/animation/nested_bool_base.dart

@@ -0,0 +1,44 @@
+/// Core automatically generated
+/// lib/src/generated/animation/nested_bool_base.dart.
+/// Do not modify manually.
+
+import 'package:rive/src/generated/component_base.dart';
+import 'package:rive/src/rive_core/animation/nested_input.dart';
+
+abstract class NestedBoolBase extends NestedInput {
+  static const int typeKey = 123;
+  @override
+  int get coreType => NestedBoolBase.typeKey;
+  @override
+  Set<int> get coreTypes =>
+      {NestedBoolBase.typeKey, NestedInputBase.typeKey, ComponentBase.typeKey};
+
+  /// --------------------------------------------------------------------------
+  /// NestedValue field with key 238.
+  static const bool nestedValueInitialValue = false;
+  bool _nestedValue = nestedValueInitialValue;
+  static const int nestedValuePropertyKey = 238;
+  bool get nestedValue => _nestedValue;
+
+  /// Change the [_nestedValue] field value.
+  /// [nestedValueChanged] will be invoked only if the field's value has
+  /// changed.
+  set nestedValue(bool value) {
+    if (_nestedValue == value) {
+      return;
+    }
+    bool from = _nestedValue;
+    _nestedValue = value;
+    if (hasValidated) {
+      nestedValueChanged(from, value);
+    }
+  }
+
+  void nestedValueChanged(bool from, bool to);
+
+  @override
+  void copy(covariant NestedBoolBase source) {
+    super.copy(source);
+    _nestedValue = source._nestedValue;
+  }
+}

lib/src/generated/animation/nested_input_base.dart

@@ -0,0 +1,43 @@
+/// Core automatically generated
+/// lib/src/generated/animation/nested_input_base.dart.
+/// Do not modify manually.
+
+import 'package:rive/src/rive_core/component.dart';
+
+abstract class NestedInputBase extends Component {
+  static const int typeKey = 121;
+  @override
+  int get coreType => NestedInputBase.typeKey;
+  @override
+  Set<int> get coreTypes => {NestedInputBase.typeKey, ComponentBase.typeKey};
+
+  /// --------------------------------------------------------------------------
+  /// InputId field with key 237.
+  static const int inputIdInitialValue = -1;
+  int _inputId = inputIdInitialValue;
+  static const int inputIdPropertyKey = 237;
+
+  /// Identifier used to track the actual backing state machine input.
+  int get inputId => _inputId;
+
+  /// Change the [_inputId] field value.
+  /// [inputIdChanged] will be invoked only if the field's value has changed.
+  set inputId(int value) {
+    if (_inputId == value) {
+      return;
+    }
+    int from = _inputId;
+    _inputId = value;
+    if (hasValidated) {
+      inputIdChanged(from, value);
+    }
+  }
+
+  void inputIdChanged(int from, int to);
+
+  @override
+  void copy(covariant NestedInputBase source) {
+    super.copy(source);
+    _inputId = source._inputId;
+  }
+}

lib/src/generated/animation/nested_linear_animation_base.dart

@@ -3,6 +3,7 @@
 /// Do not modify manually.
 
 import 'package:rive/src/generated/component_base.dart';
+import 'package:rive/src/generated/container_component_base.dart';
 import 'package:rive/src/rive_core/animation/linear_animation.dart';
 import 'package:rive/src/rive_core/nested_animation.dart';
 
@@ -15,6 +16,7 @@ abstract class NestedLinearAnimationBase
   Set<int> get coreTypes => {
         NestedLinearAnimationBase.typeKey,
         NestedAnimationBase.typeKey,
+        ContainerComponentBase.typeKey,
         ComponentBase.typeKey
       };
 

lib/src/generated/animation/nested_number_base.dart

@@ -0,0 +1,47 @@
+/// Core automatically generated
+/// lib/src/generated/animation/nested_number_base.dart.
+/// Do not modify manually.
+
+import 'package:rive/src/generated/component_base.dart';
+import 'package:rive/src/rive_core/animation/nested_input.dart';
+
+abstract class NestedNumberBase extends NestedInput {
+  static const int typeKey = 124;
+  @override
+  int get coreType => NestedNumberBase.typeKey;
+  @override
+  Set<int> get coreTypes => {
+        NestedNumberBase.typeKey,
+        NestedInputBase.typeKey,
+        ComponentBase.typeKey
+      };
+
+  /// --------------------------------------------------------------------------
+  /// NestedValue field with key 239.
+  static const double nestedValueInitialValue = 0;
+  double _nestedValue = nestedValueInitialValue;
+  static const int nestedValuePropertyKey = 239;
+  double get nestedValue => _nestedValue;
+
+  /// Change the [_nestedValue] field value.
+  /// [nestedValueChanged] will be invoked only if the field's value has
+  /// changed.
+  set nestedValue(double value) {
+    if (_nestedValue == value) {
+      return;
+    }
+    double from = _nestedValue;
+    _nestedValue = value;
+    if (hasValidated) {
+      nestedValueChanged(from, value);
+    }
+  }
+
+  void nestedValueChanged(double from, double to);
+
+  @override
+  void copy(covariant NestedNumberBase source) {
+    super.copy(source);
+    _nestedValue = source._nestedValue;
+  }
+}

lib/src/generated/animation/nested_remap_animation_base.dart

@@ -3,6 +3,7 @@
 /// Do not modify manually.
 
 import 'package:rive/src/generated/component_base.dart';
+import 'package:rive/src/generated/container_component_base.dart';
 import 'package:rive/src/generated/nested_animation_base.dart';
 import 'package:rive/src/rive_core/animation/nested_linear_animation.dart';
 
@@ -15,6 +16,7 @@ abstract class NestedRemapAnimationBase extends NestedLinearAnimation {
         NestedRemapAnimationBase.typeKey,
         NestedLinearAnimationBase.typeKey,
         NestedAnimationBase.typeKey,
+        ContainerComponentBase.typeKey,
         ComponentBase.typeKey
       };
 

lib/src/generated/animation/nested_simple_animation_base.dart

@@ -3,6 +3,7 @@
 /// Do not modify manually.
 
 import 'package:rive/src/generated/component_base.dart';
+import 'package:rive/src/generated/container_component_base.dart';
 import 'package:rive/src/generated/nested_animation_base.dart';
 import 'package:rive/src/rive_core/animation/nested_linear_animation.dart';
 
@@ -15,6 +16,7 @@ abstract class NestedSimpleAnimationBase extends NestedLinearAnimation {
         NestedSimpleAnimationBase.typeKey,
         NestedLinearAnimationBase.typeKey,
         NestedAnimationBase.typeKey,
+        ContainerComponentBase.typeKey,
         ComponentBase.typeKey
       };
 

lib/src/generated/animation/nested_state_machine_base.dart

@@ -3,6 +3,7 @@
 /// Do not modify manually.
 
 import 'package:rive/src/generated/component_base.dart';
+import 'package:rive/src/generated/container_component_base.dart';
 import 'package:rive/src/rive_core/animation/state_machine.dart';
 import 'package:rive/src/rive_core/nested_animation.dart';
 
@@ -14,6 +15,7 @@ abstract class NestedStateMachineBase extends NestedAnimation<StateMachine> {
   Set<int> get coreTypes => {
         NestedStateMachineBase.typeKey,
         NestedAnimationBase.typeKey,
+        ContainerComponentBase.typeKey,
         ComponentBase.typeKey
       };
 }

lib/src/generated/animation/nested_trigger_base.dart

@@ -0,0 +1,18 @@
+/// Core automatically generated
+/// lib/src/generated/animation/nested_trigger_base.dart.
+/// Do not modify manually.
+
+import 'package:rive/src/generated/component_base.dart';
+import 'package:rive/src/rive_core/animation/nested_input.dart';
+
+abstract class NestedTriggerBase extends NestedInput {
+  static const int typeKey = 122;
+  @override
+  int get coreType => NestedTriggerBase.typeKey;
+  @override
+  Set<int> get coreTypes => {
+        NestedTriggerBase.typeKey,
+        NestedInputBase.typeKey,
+        ComponentBase.typeKey
+      };
+}

lib/src/generated/nested_animation_base.dart

@@ -1,15 +1,20 @@
 /// Core automatically generated lib/src/generated/nested_animation_base.dart.
 /// Do not modify manually.
 
-import 'package:rive/src/rive_core/component.dart';
+import 'package:rive/src/generated/component_base.dart';
+import 'package:rive/src/generated/container_component_base.dart';
+import 'package:rive/src/rive_core/container_component.dart';
 
-abstract class NestedAnimationBase extends Component {
+abstract class NestedAnimationBase extends ContainerComponent {
   static const int typeKey = 93;
   @override
   int get coreType => NestedAnimationBase.typeKey;
   @override
-  Set<int> get coreTypes =>
+  Set<int> get coreTypes => {
-      {NestedAnimationBase.typeKey, ComponentBase.typeKey};
+        NestedAnimationBase.typeKey,
+        ContainerComponentBase.typeKey,
+        ComponentBase.typeKey
+      };
 
   /// --------------------------------------------------------------------------
   /// AnimationId field with key 198.

lib/src/generated/rive_core_context.dart

@@ -10,6 +10,7 @@ import 'package:rive/src/generated/animation/blend_animation_base.dart';
 import 'package:rive/src/generated/animation/cubic_interpolator_base.dart';
 import 'package:rive/src/generated/animation/keyframe_base.dart';
 import 'package:rive/src/generated/animation/listener_input_change_base.dart';
+import 'package:rive/src/generated/animation/nested_input_base.dart';
 import 'package:rive/src/generated/animation/nested_linear_animation_base.dart';
 import 'package:rive/src/generated/animation/state_machine_component_base.dart';
 import 'package:rive/src/generated/animation/transition_condition_base.dart';
@@ -52,9 +53,12 @@ import 'package:rive/src/rive_core/animation/linear_animation.dart';
 import 'package:rive/src/rive_core/animation/listener_bool_change.dart';
 import 'package:rive/src/rive_core/animation/listener_number_change.dart';
 import 'package:rive/src/rive_core/animation/listener_trigger_change.dart';
+import 'package:rive/src/rive_core/animation/nested_bool.dart';
+import 'package:rive/src/rive_core/animation/nested_number.dart';
 import 'package:rive/src/rive_core/animation/nested_remap_animation.dart';
 import 'package:rive/src/rive_core/animation/nested_simple_animation.dart';
 import 'package:rive/src/rive_core/animation/nested_state_machine.dart';
+import 'package:rive/src/rive_core/animation/nested_trigger.dart';
 import 'package:rive/src/rive_core/animation/state_machine.dart';
 import 'package:rive/src/rive_core/animation/state_machine_bool.dart';
 import 'package:rive/src/rive_core/animation/state_machine_layer.dart';
@@ -140,6 +144,8 @@ class RiveCoreContext {
         return NestedSimpleAnimation();
       case AnimationStateBase.typeKey:
         return AnimationState();
+      case NestedTriggerBase.typeKey:
+        return NestedTrigger();
       case KeyedObjectBase.typeKey:
         return KeyedObject();
       case BlendAnimationDirectBase.typeKey:
@@ -170,6 +176,8 @@ class RiveCoreContext {
         return CubicInterpolator();
       case StateTransitionBase.typeKey:
         return StateTransition();
+      case NestedBoolBase.typeKey:
+        return NestedBool();
       case KeyFrameDoubleBase.typeKey:
         return KeyFrameDouble();
       case KeyFrameColorBase.typeKey:
@@ -188,6 +196,8 @@ class RiveCoreContext {
         return NestedStateMachine();
       case ExitStateBase.typeKey:
         return ExitState();
+      case NestedNumberBase.typeKey:
+        return NestedNumber();
       case BlendAnimation1DBase.typeKey:
         return BlendAnimation1D();
       case BlendState1DBase.typeKey:
@@ -522,6 +532,11 @@ class RiveCoreContext {
           object.animationId = value;
         }
         break;
+      case NestedInputBase.inputIdPropertyKey:
+        if (object is NestedInputBase && value is int) {
+          object.inputId = value;
+        }
+        break;
       case KeyedObjectBase.objectIdPropertyKey:
         if (object is KeyedObjectBase && value is int) {
           object.objectId = value;
@@ -652,6 +667,11 @@ class RiveCoreContext {
           object.exitTime = value;
         }
         break;
+      case NestedBoolBase.nestedValuePropertyKey:
+        if (object is NestedBoolBase && value is bool) {
+          object.nestedValue = value;
+        }
+        break;
       case KeyFrameDoubleBase.valuePropertyKey:
         if (object is KeyFrameDoubleBase && value is double) {
           object.value = value;
@@ -662,6 +682,11 @@ class RiveCoreContext {
           object.value = value;
         }
         break;
+      case NestedNumberBase.nestedValuePropertyKey:
+        if (object is NestedNumberBase && value is double) {
+          object.nestedValue = value;
+        }
+        break;
       case BlendAnimation1DBase.valuePropertyKey:
         if (object is BlendAnimation1DBase && value is double) {
           object.value = value;
@@ -1158,6 +1183,7 @@ class RiveCoreContext {
       case LinearAnimationBase.workEndPropertyKey:
       case ListenerInputChangeBase.inputIdPropertyKey:
       case AnimationStateBase.animationIdPropertyKey:
+      case NestedInputBase.inputIdPropertyKey:
       case KeyedObjectBase.objectIdPropertyKey:
       case BlendAnimationBase.animationIdPropertyKey:
       case BlendAnimationDirectBase.inputIdPropertyKey:
@@ -1222,6 +1248,7 @@ class RiveCoreContext {
       case CubicInterpolatorBase.x2PropertyKey:
       case CubicInterpolatorBase.y2PropertyKey:
       case KeyFrameDoubleBase.valuePropertyKey:
+      case NestedNumberBase.nestedValuePropertyKey:
       case BlendAnimation1DBase.valuePropertyKey:
       case NestedRemapAnimationBase.timePropertyKey:
       case LinearGradientBase.startXPropertyKey:
@@ -1293,6 +1320,7 @@ class RiveCoreContext {
       case LinearAnimationBase.enableWorkAreaPropertyKey:
       case NestedSimpleAnimationBase.isPlayingPropertyKey:
       case KeyFrameBoolBase.valuePropertyKey:
+      case NestedBoolBase.nestedValuePropertyKey:
       case StateMachineBoolBase.valuePropertyKey:
       case ShapePaintBase.isVisiblePropertyKey:
       case StrokeBase.transformAffectsStrokePropertyKey:
@@ -1369,6 +1397,8 @@ class RiveCoreContext {
         return (object as ListenerInputChangeBase).inputId;
       case AnimationStateBase.animationIdPropertyKey:
         return (object as AnimationStateBase).animationId;
+      case NestedInputBase.inputIdPropertyKey:
+        return (object as NestedInputBase).inputId;
       case KeyedObjectBase.objectIdPropertyKey:
         return (object as KeyedObjectBase).objectId;
       case BlendAnimationBase.animationIdPropertyKey:
@@ -1501,6 +1531,8 @@ class RiveCoreContext {
         return (object as CubicInterpolatorBase).y2;
       case KeyFrameDoubleBase.valuePropertyKey:
         return (object as KeyFrameDoubleBase).value;
+      case NestedNumberBase.nestedValuePropertyKey:
+        return (object as NestedNumberBase).nestedValue;
       case BlendAnimation1DBase.valuePropertyKey:
         return (object as BlendAnimation1DBase).value;
       case NestedRemapAnimationBase.timePropertyKey:
@@ -1647,6 +1679,8 @@ class RiveCoreContext {
         return (object as NestedSimpleAnimationBase).isPlaying;
       case KeyFrameBoolBase.valuePropertyKey:
         return (object as KeyFrameBoolBase).value;
+      case NestedBoolBase.nestedValuePropertyKey:
+        return (object as NestedBoolBase).nestedValue;
       case StateMachineBoolBase.valuePropertyKey:
         return (object as StateMachineBoolBase).value;
       case ShapePaintBase.isVisiblePropertyKey:
@@ -1814,6 +1848,11 @@ class RiveCoreContext {
           object.animationId = value;
         }
         break;
+      case NestedInputBase.inputIdPropertyKey:
+        if (object is NestedInputBase) {
+          object.inputId = value;
+        }
+        break;
       case KeyedObjectBase.objectIdPropertyKey:
         if (object is KeyedObjectBase) {
           object.objectId = value;
@@ -2134,6 +2173,11 @@ class RiveCoreContext {
           object.value = value;
         }
         break;
+      case NestedNumberBase.nestedValuePropertyKey:
+        if (object is NestedNumberBase) {
+          object.nestedValue = value;
+        }
+        break;
       case BlendAnimation1DBase.valuePropertyKey:
         if (object is BlendAnimation1DBase) {
           object.value = value;
@@ -2489,6 +2533,11 @@ class RiveCoreContext {
           object.value = value;
         }
         break;
+      case NestedBoolBase.nestedValuePropertyKey:
+        if (object is NestedBoolBase) {
+          object.nestedValue = value;
+        }
+        break;
       case StateMachineBoolBase.valuePropertyKey:
         if (object is StateMachineBoolBase) {
           object.value = value;

lib/src/rive_core/animation/nested_bool.dart

@@ -0,0 +1,10 @@
+import 'package:rive/src/generated/animation/nested_bool_base.dart';
+export 'package:rive/src/generated/animation/nested_bool_base.dart';
+
+class NestedBool extends NestedBoolBase {
+  @override
+  void nestedValueChanged(bool from, bool to) => updateValue();
+
+  @override
+  void updateValue() => nestedStateMachine?.setInputValue(inputId, nestedValue);
+}

lib/src/rive_core/animation/nested_input.dart

@@ -0,0 +1,32 @@
+import 'package:rive/src/core/core.dart';
+import 'package:rive/src/generated/animation/nested_input_base.dart';
+import 'package:rive/src/rive_core/animation/nested_state_machine.dart';
+
+export 'package:rive/src/generated/animation/nested_input_base.dart';
+
+abstract class NestedInput extends NestedInputBase {
+  @override
+  void inputIdChanged(int from, int to) {}
+
+  NestedStateMachine? get nestedStateMachine => parent as NestedStateMachine?;
+
+  @override
+  bool validate() => super.validate() && nestedStateMachine != null;
+
+  void updateValue();
+
+  @override
+  void update(int dirt) {}
+
+  @override
+  bool import(ImportStack importStack) {
+    var importer = importStack
+        .latest<NestedStateMachineImporter>(NestedStateMachineBase.typeKey);
+    if (importer == null) {
+      return false;
+    }
+    importer.addNestedInput(this);
+
+    return super.import(importStack);
+  }
+}

lib/src/rive_core/animation/nested_number.dart

@@ -0,0 +1,10 @@
+import 'package:rive/src/generated/animation/nested_number_base.dart';
+export 'package:rive/src/generated/animation/nested_number_base.dart';
+
+class NestedNumber extends NestedNumberBase {
+  @override
+  void nestedValueChanged(double from, double to) => updateValue();
+
+  @override
+  void updateValue() => nestedStateMachine?.setInputValue(inputId, nestedValue);
+}

lib/src/rive_core/animation/nested_state_machine.dart

@@ -1,4 +1,5 @@
 import 'package:flutter/foundation.dart';
+import 'package:rive/src/core/core.dart';
 import 'package:rive/src/generated/animation/nested_state_machine_base.dart';
 import 'package:rive/src/rive_core/math/vec2d.dart';
 import 'package:rive/src/rive_core/nested_artboard.dart';
@@ -16,6 +17,8 @@ abstract class NestedStateMachineInstance {
   void pointerDown(Vec2D position);
 
   void pointerUp(Vec2D position);
+
+  void setInputValue(int id, dynamic value);
 }
 
 class NestedStateMachine extends NestedStateMachineBase {
@@ -45,6 +48,12 @@ class NestedStateMachine extends NestedStateMachineBase {
     to?.isActiveChanged.addListener(_isActiveChanged);
   }
 
+  void setInputValue(int id, dynamic value) {
+    int inputId = id;
+
+    _stateMachineInstance?.setInputValue(inputId, value);
+  }
+
   void pointerMove(Vec2D position) =>
       _stateMachineInstance?.pointerMove(position);
 

lib/src/rive_core/animation/nested_trigger.dart

@@ -0,0 +1,7 @@
+import 'package:rive/src/generated/animation/nested_trigger_base.dart';
+export 'package:rive/src/generated/animation/nested_trigger_base.dart';
+
+class NestedTrigger extends NestedTriggerBase {
+  @override
+  void updateValue() {}
+}

lib/src/rive_core/assets/asset.dart

@@ -2,7 +2,7 @@ import 'package:rive/src/generated/assets/asset_base.dart';
 
 export 'package:rive/src/generated/assets/asset_base.dart';
 
-class Asset extends AssetBase {
+abstract class Asset extends AssetBase {
   @override
   void nameChanged(String from, String to) {}
 
@@ -11,6 +11,4 @@ class Asset extends AssetBase {
 
   @override
   void onAddedDirty() {}
-
-  bool get isUsable => false;
 }

lib/src/rive_core/assets/drawable_asset.dart

@@ -1,9 +1,9 @@
 import 'package:rive/src/generated/assets/drawable_asset_base.dart';
+
 export 'package:rive/src/generated/assets/drawable_asset_base.dart';
 
 abstract class DrawableAsset extends DrawableAssetBase {
-  @override
+  DrawableAsset();
-  bool get isUsable => width != 0 && height != 0;
 
   @override
   void heightChanged(double from, double to) {}

lib/src/rive_core/assets/image_asset.dart

@@ -21,6 +21,7 @@ class ImageAsset extends ImageAssetBase {
     if (_image == image) {
       return;
     }
+
     _image = image;
   }
 
@@ -28,7 +29,7 @@ class ImageAsset extends ImageAssetBase {
   Future<void> decode(Uint8List bytes) {
     final completer = Completer<void>();
     ui.decodeImageFromList(bytes, (value) {
-      _image = value;
+      image = value;
       completer.complete();
     });
     return completer.future;

lib/src/rive_core/transform_component.dart

@@ -33,6 +33,17 @@ abstract class TransformComponent extends TransformComponentBase {
   final List<Constraint> _constraints = [];
   Iterable<Constraint> get constraints => _constraints;
 
+  bool get isConstrained {
+    Component? component = this;
+    while (component != null) {
+      if (component is TransformComponent && component.constraints.isNotEmpty) {
+        return true;
+      }
+      component = component.parent;
+    }
+    return false;
+  }
+
   double _renderOpacity = 1;
   double get renderOpacity => _renderOpacity;
 

lib/src/rive_file.dart

@@ -19,6 +19,7 @@ import 'package:rive/src/rive_core/animation/keyed_object.dart';
 import 'package:rive/src/rive_core/animation/keyed_property.dart';
 import 'package:rive/src/rive_core/animation/layer_state.dart';
 import 'package:rive/src/rive_core/animation/linear_animation.dart';
+import 'package:rive/src/rive_core/animation/nested_state_machine.dart';
 import 'package:rive/src/rive_core/animation/state_machine.dart';
 import 'package:rive/src/rive_core/animation/state_machine_layer.dart';
 import 'package:rive/src/rive_core/animation/state_machine_listener.dart';
@@ -163,6 +164,10 @@ class RiveFile {
           stackObject =
               StateMachineListenerImporter(object as StateMachineListener);
           break;
+        case NestedStateMachineBase.typeKey:
+          stackObject =
+              NestedStateMachineImporter(object as NestedStateMachine);
+          break;
         case EntryStateBase.typeKey:
         case AnyStateBase.typeKey:
         case ExitStateBase.typeKey:

lib/src/runtime_nested_artboard.dart

@@ -124,6 +124,14 @@ class RuntimeNestedStateMachineInstance extends NestedStateMachineInstance {
 
   @override
   void pointerUp(Vec2D position) => stateMachineController.pointerUp(position);
+
+  @override
+  void setInputValue(int id, dynamic value) {
+    var inputs = stateMachineController.stateMachine.inputs;
+    if (id < inputs.length && id >= 0) {
+      stateMachineController.setInputValue(inputs[id].id, value);
+    }
+  }
 }
 
 class RuntimeMountedArtboard extends MountedArtboard {