Process Event Calls On Components?

[reepblue]

I was wondering if it's possible or will be possible to have components listen to events. I've made custom events for changes to the settings, and I want my camera component to apply the settings whenever the event is emitted.

For example, I emit the event with this function.

	void Settings::SetFov(const float value)
	{
		UpdateSettingsFile();
		auto data = std::make_shared<SettingsData>();
		data->float_value = value;
		settingstable["fov"] = value;
		EmitEvent(EVENT_SETTINGS_FOV, data);
	}

And then in the Component, I want something like this.

virtual void ProcessEvent(const Event& e)
{
    auto camera = entity->As<Camera>();
    if (camera)
    {
      if (e.id == EVENT_SETTINGS_FOV) camera->SetFov(e.data);
    }
}

From my understanding, there's no ProcessEvent virtual function in the current Component class, but I recall this being possible in earlier builds. 

[Josh]

class ListenerComponent : public Component
{
    virtual void Start()
    {
        ListenEvent(EVENT_NONE, NULL, ProcessEvent, Self());// don't call Self() in a constructor
    }

    bool ProcessEvent(const Event& e)
    {
        switch (e.id)
        {
        case EVENT_WINDOWCLOSe:
            break;
        }
        return true;
    }

    static bool callback(const Event& e, shared_ptr<Object> extra)
    {
        return extra->As<EventListener>()->ProcessEvent(e);
    }
}

auto c = entity->AddComponent<ListenerComponent>();

 

[reepblue]

Ok, it's possible just with elbow grease. I was expecting a virtual function to override but I'll give this a shot. Thanks.