2 files changed, 20 insertions, 0 deletions

diff --git a/source/blender/depsgraph/intern/builder/deg_builder_relations.cc b/source/blender/depsgraph/intern/builder/deg_builder_relations.cc
index 14f9db767a9..525f9e304cb 100644
--- a/source/blender/depsgraph/intern/builder/deg_builder_relations.cc
+++ b/source/blender/depsgraph/intern/builder/deg_builder_relations.cc
@@ -1252,6 +1252,7 @@ void DepsgraphRelationBuilder::build_animdata(ID *id)
     ComponentKey animation_key(id, NodeType::ANIMATION);
     ComponentKey parameters_key(id, NodeType::PARAMETERS);
     add_relation(animation_key, parameters_key, "Animation -> Parameters");
+    build_animdata_force(id);
   }
 }
 
@@ -1396,6 +1397,24 @@ void DepsgraphRelationBuilder::build_animation_images(ID *id)
   }
 }
 
+void DepsgraphRelationBuilder::build_animdata_force(ID *id)
+{
+  if (GS(id->name) != ID_OB) {
+    return;
+  }
+
+  const Object *object = (Object *)id;
+  if (object->pd == nullptr || object->pd->forcefield == PFIELD_NULL) {
+    return;
+  }
+
+  /* Updates to animation data (in the UI, for example by altering FCurve Modifier parameters
+   * animating force field strength) may need to rebuild the rigid body world. */
+  ComponentKey animation_key(id, NodeType::ANIMATION);
+  OperationKey rigidbody_key(&scene_->id, NodeType::TRANSFORM, OperationCode::RIGIDBODY_REBUILD);
+  add_relation(animation_key, rigidbody_key, "Animation -> Rigid Body");
+}
+
 void DepsgraphRelationBuilder::build_action(bAction *action)
 {
   if (built_map_.checkIsBuiltAndTag(action)) {
diff --git a/source/blender/depsgraph/intern/builder/deg_builder_relations.h b/source/blender/depsgraph/intern/builder/deg_builder_relations.h
index 39768b9fdb6..7f5e4cafeea 100644
--- a/source/blender/depsgraph/intern/builder/deg_builder_relations.h
+++ b/source/blender/depsgraph/intern/builder/deg_builder_relations.h
@@ -241,6 +241,7 @@ class DepsgraphRelationBuilder : public DepsgraphBuilder {
                                                OperationNode *operation_from,
                                                ListBase *strips);
   virtual void build_animdata_drivers(ID *id);
+  virtual void build_animdata_force(ID *id);
   virtual void build_animation_images(ID *id);
   virtual void build_action(bAction *action);
   virtual void build_driver(ID *id, FCurve *fcurve);