WEBVTT 00:00.470 --> 00:01.760 Welcome back. 00:01.760 --> 00:04.610 It's time for your next challenge. 00:04.790 --> 00:09.110 Now you're going to make a new widget controller for the Attribute menu. 00:09.200 --> 00:17.060 Call this attribute menu, widget controller and base this off of our base class or a widget controller. 00:17.060 --> 00:23.060 So make sure that you do that so you can inherit a couple of functions that are important. 00:23.060 --> 00:24.770 You're going to override those. 00:24.770 --> 00:30.260 You can go ahead and leave them empty for now, but override them so you have them in your class. 00:30.260 --> 00:32.300 This is all stuff that you're familiar with. 00:32.330 --> 00:35.060 You should be able to do this without any problems. 00:35.060 --> 00:38.870 So pause the video and make your widget controller now. 00:42.870 --> 00:43.560 All right. 00:43.560 --> 00:44.610 Welcome back. 00:44.610 --> 00:46.440 Now, I just opened my editor. 00:46.470 --> 00:52.050 There's my attribute info data asset, but I'm done with it for now. 00:52.050 --> 00:53.540 I know it's all filled out. 00:53.550 --> 00:54.420 It's all looking good. 00:54.420 --> 00:55.260 I'm going to close it. 00:55.260 --> 00:59.820 I'm going to close project settings and we're going to make our widget controller class. 00:59.820 --> 01:04.430 So I'm going to go into C plus plus classes Aura public. 01:04.470 --> 01:08.550 This will go into UI and I have a widget controller folder. 01:08.550 --> 01:12.390 I'm going to put it here and this will be based on Aura widget controller. 01:12.390 --> 01:18.420 So I'm going to right click on that, make a class derived from it that saves me some searching there. 01:18.420 --> 01:22.470 And this will be called my attribute Menu Widget Controller. 01:22.470 --> 01:26.070 So attribute Menu Widget controller. 01:26.070 --> 01:27.870 Let's create that class. 01:28.020 --> 01:34.740 I'm going to go ahead and let the editor close and I'm going to get that open so I don't need these 01:34.740 --> 01:35.100 files. 01:35.100 --> 01:38.580 I'm going to close all tabs and open my widget controller. 01:38.580 --> 01:43.330 There's my CP, here's my header file and we have it. 01:43.360 --> 01:49.270 Now I want a public section and we're going to override a couple of important functions. 01:49.270 --> 01:54.520 As we've mentioned, we want to override bind callbacks to dependencies. 01:54.520 --> 01:57.190 So we're going to say virtual void bind. 01:57.490 --> 02:00.250 Go ahead and let writer fill that out for me. 02:00.250 --> 02:04.960 And virtual void broadcast broadcast initial values. 02:04.960 --> 02:09.850 So we have those two very important functions and that's looking great. 02:09.850 --> 02:18.430 We can go ahead and generate the definitions for these both and we don't need the call to super because 02:18.430 --> 02:21.850 if we open aura widget controller, we see that those are empty, right? 02:21.850 --> 02:25.150 So no need to really call super in these cases. 02:25.150 --> 02:27.790 We're going to go ahead and not do that. 02:28.940 --> 02:34.370 We'll just have to remember, if we put something in the parent class that we want called, then we'll 02:34.370 --> 02:35.720 come back and call super. 02:35.720 --> 02:42.080 When we add that if we do so, now that we have bind callbacks to dependencies and broadcast initial 02:42.080 --> 02:51.020 values and we have our widget controller class, this is great because this will be used by our attribute 02:51.020 --> 02:57.980 menu, which means our attribute menu needs to have its widget controller set, or at least find a way 02:57.980 --> 03:00.890 to set the widget controller itself. 03:00.890 --> 03:05.570 And we need a place that this widget controller should be constructed. 03:05.600 --> 03:13.100 Now if you'll recall, our other widget controller overlay widget controller is constructed in Orerokpe. 03:13.400 --> 03:20.690 It's constructed with the get overlay widget controller function, which requires widget controller 03:20.690 --> 03:21.230 params. 03:21.230 --> 03:29.070 Right now, widget controllers have those four key variables that can be packaged up into widget controller 03:29.070 --> 03:29.790 params. 03:29.790 --> 03:36.540 So our aura HUD is probably a good place to construct and store all of these as the aura. 03:36.570 --> 03:41.940 HUD class itself has an overlay widget controller variable. 03:41.940 --> 03:43.470 Now it's private. 03:43.500 --> 03:49.920 We have to go through the getter to get it, and if the getter sees that this hasn't been constructed 03:49.920 --> 03:54.300 yet, it will construct one for the first time and return it right? 03:54.300 --> 04:01.170 So this is the pattern that I'd like to follow for our new attribute menu Widget Controller. 04:01.170 --> 04:03.150 We're going to set all of that up. 04:03.150 --> 04:04.830 I'd like to do that next. 04:04.830 --> 04:13.260 And I'd also like a way for us to easily get the widget controller without having to go through a bunch 04:13.260 --> 04:16.440 of classes in order to find the widget controller. 04:16.440 --> 04:22.950 Because if we'd like a widget to set its own widget controller, I don't want it to have to find the 04:22.950 --> 04:27.540 HUD class and ask the HUD class for a widget controller. 04:27.540 --> 04:34.920 I'd like just some really easy to use blueprint function that we can use to access the widget controller. 04:34.920 --> 04:42.630 And this is a perfect use case for creating a blueprint function library. 04:42.630 --> 04:49.860 If we create a blueprint function library, we can create some blueprint callable static functions perhaps, 04:49.860 --> 04:55.680 and we can use those functions to access things in an easy manner in blueprint. 04:55.680 --> 04:58.770 So that's one of the things I'd like to do next. 04:58.800 --> 05:06.510 We'll have a nice blueprint function library that we can use to access the widget controllers, of which 05:06.540 --> 05:13.200 our project should only have one for the overlay widget controller and only one for the attribute menu 05:13.200 --> 05:14.490 widget controller as well. 05:14.490 --> 05:17.820 So we'll do those things next and I'll see you soon.