Add find function to actor list

Docs/python_api.md

@@ -78,6 +78,7 @@
 
 ## `carla.ActorList`
 
+- `find(id)`
 - `filter(wildcard_pattern)`
 - `__getitem__(pos)`
 - `__len__()`

LibCarla/source/carla/client/ActorList.cpp

@@ -20,12 +20,9 @@ namespace client {
     : _episode(std::move(episode)),
       _actors(std::make_move_iterator(actors.begin()), std::make_move_iterator(actors.end())) {}
 
-  SharedPtr<Actor> ActorList::GetActor(actor_id_type const actor_id) const
-  {
-    for (auto &actor: _actors)
-    {
-      if (actor_id == actor.GetId())
-      {
+  SharedPtr<Actor> ActorList::Find(actor_id_type const actor_id) const {
+    for (auto &actor : _actors) {
+      if (actor_id == actor.GetId()) {
         return actor.Get(_episode, shared_from_this());
       }
     }

LibCarla/source/carla/client/ActorList.h

@@ -27,6 +27,9 @@ namespace client {
 
   public:
 
+    /// Find an actor by id.
+    SharedPtr<Actor> Find(actor_id_type actor_id) const;
+
     /// Filters a list of Actor with type id matching @a wildcard_pattern.
     ActorList Filter(const std::string &wildcard_pattern) const;
 
@@ -54,8 +57,6 @@ namespace client {
       return _actors.size();
     }
 
-    SharedPtr<Actor> GetActor(actor_id_type const actor_id) const;
-
   private:
 
     friend class World;

LibCarla/source/carla/client/detail/ActorVariant.cpp

@@ -16,10 +16,10 @@ namespace detail {
   void ActorVariant::MakeActor(EpisodeProxy episode, SharedPtr<const client::ActorList> actor_list) const {
     auto const parent_id = GetParentId();
     SharedPtr<client::Actor> parent = nullptr;
-    if ( (actor_list != nullptr) && (parent_id != 0) )
-    {
-      // in case we have an actor list as context, we are able to actually create the parent actor
-      parent = actor_list->GetActor(parent_id);
+    if ((actor_list != nullptr) && (parent_id != 0)) {
+      // In case we have an actor list as context, we are able to actually
+      // create the parent actor.
+      parent = actor_list->Find(parent_id);
     }
     _value = detail::ActorFactory::MakeActor(
         episode,

PythonAPI/source/libcarla/Blueprint.cpp

@@ -148,8 +148,8 @@ void export_blueprint() {
   class_<cc::BlueprintLibrary, boost::noncopyable, boost::shared_ptr<cc::BlueprintLibrary>>("BlueprintLibrary", no_init)
     .def("find", +[](const cc::BlueprintLibrary &self, const std::string &key) -> cc::ActorBlueprint {
       return self.at(key);
-    })
-    .def("filter", &cc::BlueprintLibrary::Filter)
+    }, (arg("id")))
+    .def("filter", &cc::BlueprintLibrary::Filter, (arg("wildcard_pattern")))
     .def("__getitem__", +[](const cc::BlueprintLibrary &self, size_t pos) -> cc::ActorBlueprint {
       return self.at(pos);
     })

PythonAPI/source/libcarla/World.cpp

@@ -64,7 +64,8 @@ void export_world() {
   ;
 
   class_<cc::ActorList, boost::shared_ptr<cc::ActorList>>("ActorList", no_init)
-    .def("filter", &cc::ActorList::Filter)
+    .def("find", &cc::ActorList::Find, (arg("id")))
+    .def("filter", &cc::ActorList::Filter, (arg("wildcard_pattern")))
     .def("__getitem__", &cc::ActorList::at)
     .def("__len__", &cc::ActorList::size)
     .def("__iter__", range(&cc::ActorList::begin, &cc::ActorList::end))