WEBVTT 00:06.950 --> 00:08.000 Welcome back. 00:08.000 --> 00:10.610 So we have the ability to fade things out. 00:10.610 --> 00:13.360 And that's because we made a fade actor. 00:13.370 --> 00:19.580 If we call fade out and fade in, we'll see that we fade out and fade in, and that's great. 00:19.580 --> 00:22.870 But now we need to know when we should fade out, right? 00:22.880 --> 00:25.220 So we're going to handle that in this video. 00:25.250 --> 00:31.760 Now, one thing I'd like to do is just really quick make sure that my fireballs will explode on our 00:31.760 --> 00:37.190 fade actor and that our mouse click is not going to hit our fade. 00:37.190 --> 00:43.100 Actor So we're going to take our mesh and we're going to make sure to set its collision presets. 00:43.100 --> 00:45.050 So we're going to change it to custom. 00:45.140 --> 00:51.500 It's going to be blocking the projectile and ignoring visibility and camera. 00:51.500 --> 00:58.340 And that way if we click on our Fade Actor, we'll just go behind it or go up to it, right? 00:58.340 --> 01:02.120 But if we launch a fireball, it'll blast it. 01:03.420 --> 01:09.090 Okay, so we want our fade actor to fade out when we're behind it. 01:09.180 --> 01:16.530 Essentially, when it's blocking our view of aura, we don't want to see it when it's in the way. 01:16.620 --> 01:23.360 And by the way, I think I'm actually setting it to block visibility when it fades back in. 01:23.370 --> 01:24.660 So that's fine. 01:24.810 --> 01:32.490 But we want a way to call these events in our fade actor fade out and fade in. 01:32.490 --> 01:38.100 And I want to do that from our character because it's our character that's going to go behind it. 01:38.220 --> 01:46.770 Now, I don't want my character to be dependent on the fade actor, so a good way to avoid that dependency 01:46.800 --> 01:49.070 is to make an interface. 01:49.080 --> 01:52.560 So I'm going to actually browse to my fade actor. 01:53.840 --> 01:57.430 And right next to it, I'm going to make a blueprint interface. 01:57.440 --> 02:05.420 So we'll go to Blueprint, Choose Blueprint Interface, and we're going to call this B, I underscore 02:05.420 --> 02:08.630 fade for a fade interface. 02:09.020 --> 02:16.760 We can even call it fade interface if we like and fade interface will have two functions fade out and 02:16.760 --> 02:17.660 one more. 02:18.740 --> 02:19.650 Fade in. 02:19.670 --> 02:22.910 So all we do is just add two functions here and that's it. 02:22.910 --> 02:25.780 And we need our fade actor to implement it. 02:25.790 --> 02:31.610 So we do that by going to class settings under interfaces and implemented interfaces. 02:31.610 --> 02:32.810 We have a dropdown. 02:32.810 --> 02:35.270 Here's by fade interface. 02:35.540 --> 02:40.970 Now that we implement it, I'm going to hit compile and now we see found more than one function with 02:40.970 --> 02:45.380 the same node because we have these custom events fade out and fade in. 02:45.410 --> 02:50.480 We're going to delete those because now we're going to have our own fade out and fade in that we're 02:50.480 --> 02:53.090 inheriting from the fade interface. 02:53.090 --> 02:57.980 So we're going to right click type fade out and we're going to get our event fade out. 02:57.980 --> 03:04.790 That's our interface and we're going to right click, get Fade In and there's our event fade in. 03:04.790 --> 03:07.400 We're going to put that into the reverse, right? 03:07.670 --> 03:13.430 And now we have these interface functions and we need to call these when something is blocking our view 03:13.430 --> 03:14.340 of aura. 03:14.360 --> 03:19.340 So for that reason, I'm going to go ahead and close everything else except for my fade actor and I'm 03:19.340 --> 03:20.630 going to open Aura. 03:20.630 --> 03:22.700 So we're going to go to blueprints. 03:24.000 --> 03:26.940 Character or a BP or a character. 03:26.940 --> 03:28.650 And we're going to add something here. 03:29.040 --> 03:34.410 So I'd like a blocking volume, something right here between the camera and aura. 03:34.410 --> 03:39.060 And we can use this to know when we should fade in and out. 03:39.270 --> 03:45.760 So I'm going to have this attached to my spring arm, and that way it'll be oriented correctly. 03:45.780 --> 03:52.530 So with my spring arm selected, I'm going to search for box, get a box collision, and here's my box 03:52.530 --> 03:55.320 collision and I'm going to drag it down a bit. 03:55.320 --> 04:01.320 So it's kind of in between about like this and I can change the box extent. 04:01.620 --> 04:03.930 So here is the length of it. 04:03.930 --> 04:05.700 I'm going to make it a bit longer. 04:06.530 --> 04:09.170 Turning off, snapping so I can move it around. 04:09.530 --> 04:19.130 And I'm going to go to perspective and front because I want this box to be less wide than my capsule. 04:19.160 --> 04:25.250 That way, if I'm right up against a wall, this box won't be fading that wall out. 04:25.250 --> 04:28.970 But as soon as I go behind the wall, that's when I want to fade out. 04:28.970 --> 04:33.140 So it's going to be slightly less wide than my capsule. 04:33.970 --> 04:35.950 Going back to perspective mode. 04:36.100 --> 04:43.450 And if I'm looking at my character from the camera's point of view, as soon as something obstructs 04:43.450 --> 04:49.150 the character from the top or the bottom, that's when I want to fade it out. 04:49.510 --> 04:56.200 So of course this will probably take a little bit of tweaking, but I'm going to make my geometry look 04:56.200 --> 04:57.430 about like that. 04:57.850 --> 05:01.540 And now I have something that I can use to fade things out. 05:01.540 --> 05:03.400 So I'm going to go to my event graph. 05:04.160 --> 05:08.630 And down here, I'm going to move unused nodes out of the way. 05:09.620 --> 05:15.650 And I'm going to take my box right click and use on component began overlap. 05:17.420 --> 05:24.490 And on overlap, I want to check the other actor to see if it implements the interface that fade interface. 05:24.490 --> 05:26.000 So I'm going to say implements. 05:27.090 --> 05:32.220 And choose does implement interface searching for by fade interface. 05:32.890 --> 05:34.770 And if we do, we'll have a branch. 05:34.780 --> 05:42.970 If we do get that interface, then we're going to right click and call Fade out. 05:45.080 --> 05:46.970 And we'll just fade out that actor. 05:46.970 --> 05:52.340 So we're going to have to bring that other actor straight into that fade out function call. 05:53.680 --> 05:54.010 Mike. 05:54.010 --> 05:54.490 So. 05:55.700 --> 06:01.790 Now, what does our famed actor Mash have as its object type, its world dynamic? 06:01.790 --> 06:02.420 Really? 06:02.420 --> 06:03.770 This could be world static. 06:03.800 --> 06:05.180 We're going to change it to that. 06:05.180 --> 06:11.000 And here in Aura Character, we're going to take our box and ignore everything except for world static. 06:11.000 --> 06:17.300 So we're going to change it to custom ignore all and we're going to overlap with world static and make 06:17.300 --> 06:19.880 sure we're generating overlap events which we are. 06:19.910 --> 06:25.280 The box should be query only and the box itself can be world dynamic as it will be moving around with 06:25.280 --> 06:28.880 aura and the fade actor is world static. 06:28.910 --> 06:35.570 It is set to generate overlap events and it blocks all but visibility and camera, so that'll work. 06:36.150 --> 06:38.340 So that's for begin overlap. 06:38.340 --> 06:40.140 But what about end overlap? 06:40.140 --> 06:46.620 So we're going to use on component end overlap with our box selected and we're going to copy does implement 06:46.620 --> 06:49.260 interface using the other actor. 06:49.260 --> 06:51.060 We're going to have a branch for that. 06:51.060 --> 06:54.840 And if it does implement the interface, we're going to call fade in. 06:54.990 --> 06:59.130 So fade in and then we'll reverse that timeline. 06:59.310 --> 07:02.040 And of course, we have to take that other actor. 07:04.850 --> 07:06.350 And hook it on in. 07:08.540 --> 07:09.920 Like so. 07:11.640 --> 07:12.090 Okay. 07:12.090 --> 07:19.080 So the last thing to do is test out how this all works and to make things easier, I'm going to take 07:19.080 --> 07:24.690 this fade actor and blow it up to a bigger size and press play. 07:25.630 --> 07:27.490 And we can run behind it. 07:27.940 --> 07:28.840 There it goes. 07:28.840 --> 07:31.330 It fades out, comes back in. 07:35.100 --> 07:41.190 And I think I don't really want to block visibility, right, because now I can't really go behind it. 07:41.190 --> 07:47.970 So what I'm going to do is actually go into our fade finished function and remove this function call 07:47.970 --> 07:53.760 to set collision response to channel as we should just ignore visibility. 07:53.760 --> 07:58.620 So we're going to go ahead and just leave it at ignore and remove those function calls. 08:01.350 --> 08:02.670 Pressing play. 08:02.820 --> 08:05.610 Now we can move behind it and it fades out. 08:07.120 --> 08:07.750 Great. 08:11.910 --> 08:14.370 Okay, so this is looking pretty good. 08:14.400 --> 08:18.300 One issue that I don't like is the shadows look a little weird. 08:18.330 --> 08:24.150 They can kind of flicker a bit so shadows don't really play nice with this whole fade out mechanic when 08:24.150 --> 08:26.280 we're using a masked material. 08:26.280 --> 08:30.810 So for that reason, I'd like all my fade actors to not cast shadows. 08:30.810 --> 08:35.880 So I'm going to take my mesh search for cast and uncheck cast shadow. 08:35.880 --> 08:40.950 And now this is going to look a lot better when it fades out and it's going to look like it doesn't 08:40.950 --> 08:41.640 exist. 08:42.820 --> 08:46.020 And we can always tweak this timeline. 08:46.030 --> 08:50.590 I kind of like a shorter fade out, like 0.4 seconds. 08:50.590 --> 08:57.340 So I'm going to take my second key and set its time to 0.4 and set my length to 0.4 for my timeline. 08:57.340 --> 08:59.560 Not four, but 0.4. 09:00.520 --> 09:03.340 And see how this looks with a faster fade out. 09:04.300 --> 09:05.440 I like that better. 09:07.990 --> 09:12.850 And now we can make all of our other actors in our world fade actors. 09:12.970 --> 09:20.290 So instead of using a regular SM tile, three by three by nine, I'm going to right click and select 09:20.290 --> 09:23.890 edit it, and notice that this one has two materials. 09:23.890 --> 09:28.870 So we're going to have to make those fade materials and material instances for both of these. 09:28.870 --> 09:36.850 So I'm going to browse to tile set one right, click on it, duplicate it, call this tile set one underscore 09:36.880 --> 09:43.510 F, I'm going to open it up and we need that material parameter I can hold s and left click to get a 09:43.510 --> 09:46.330 material parameter and call it fade. 09:46.870 --> 09:48.580 And we need to run this. 09:48.580 --> 09:55.360 I'm going to set its default value to one and we need to run this through a dither temporal AA and hook 09:55.390 --> 09:55.810 that in. 09:55.810 --> 10:01.900 But we have to change this material type to masked in order to get that opacity mask. 10:02.490 --> 10:08.640 Now we can apply that and we can go ahead and make ourselves a material instance from it. 10:09.180 --> 10:12.900 And now that we have that, we can use those in a new fade actor. 10:12.900 --> 10:17.850 But before we do that, I'm going to do the same thing for the second material, so I'll browse to it. 10:18.470 --> 10:20.150 Go ahead and duplicate it. 10:20.180 --> 10:23.840 Call this tile set two Underscore f. 10:23.930 --> 10:25.190 Open it up. 10:25.900 --> 10:33.730 And I'm going to take these two nodes from my tile set, one F, copy them over here, change this material 10:33.730 --> 10:43.900 to masked and hook that into opacity mask and apply save and we can make this into a material instance. 10:44.230 --> 10:52.450 So now that we've done those steps, we can make a new fade actor and the fade actor is what I'm going 10:52.450 --> 10:55.540 to use as our base class for all fade actors. 10:55.540 --> 11:02.380 We're going to create a child class based on this so we can browse to it and we can right click on it 11:02.380 --> 11:04.780 and create a child blueprint class. 11:04.780 --> 11:09.070 And I can prefix our fade actors with f A So look at that. 11:09.070 --> 11:12.280 We're creating our own custom prefixes. 11:12.280 --> 11:13.270 How fancy. 11:13.270 --> 11:17.170 And I'm going to use the same naming conventions as our static meshes. 11:17.170 --> 11:22.840 I'm just replacing them with f A So we'll have a tile three by three by two. 11:22.870 --> 11:24.460 That's now a fade actor. 11:24.460 --> 11:34.520 So we're going to say SM tile underscore 3X3X2, and that way it'll be the same as this one. 11:34.520 --> 11:36.800 So I'm going to open up my new fade actor. 11:36.920 --> 11:43.490 I'm going to close my old fade actor for now, and with my new fade actor, I need to change some things. 11:43.730 --> 11:50.660 I'm going to go to the mesh and change it to this mesh that I want to use so I can browse to this one. 11:50.690 --> 11:53.060 Make sure it's selected in the Outliner. 11:53.090 --> 11:56.120 Go back to my new fade actor, hit the left arrow. 11:56.120 --> 11:58.970 So now we're using this mesh. 12:00.920 --> 12:08.450 Which is using these two materials and we need to go down into original materials or actually our fade 12:08.450 --> 12:10.460 material instances actually. 12:10.460 --> 12:18.260 And I need to hit the trashcan and instead use the two material instances that we created. 12:18.380 --> 12:22.610 Now one of them is Tileset one F, and these have to be in order. 12:22.610 --> 12:25.370 So Tileset one F first. 12:26.050 --> 12:31.000 As that's the first material here, so I'm going to add that to the array. 12:31.210 --> 12:34.990 So tile set one F, we have to use the instance. 12:34.990 --> 12:38.950 So making sure the instance is selected, add that to the array. 12:38.950 --> 12:44.350 And now the second one that's tile set to F, but the instance. 12:44.350 --> 12:48.670 So I need to browse to it and select the instance and add that to the array. 12:48.670 --> 12:49.930 So we have those two. 12:50.380 --> 12:51.010 Okay. 12:51.010 --> 12:56.260 So now that we have our fade material instances set, we can bring in one of these. 12:56.260 --> 13:03.630 I'm going to take the actual static mesh and delete it and bring in our new tile. 13:04.120 --> 13:06.220 I'm going to browse to it and bring it in. 13:09.850 --> 13:14.920 Put it in place and delete the others and replace them with the new one. 13:14.920 --> 13:21.310 And of course we can flip it around if we don't want to have these all look the same. 13:21.310 --> 13:25.390 So I'm going to go ahead and duplicate them, flip them around a bit. 13:28.840 --> 13:32.020 And make sure these are all paid actors. 13:34.500 --> 13:36.570 So flipping them around. 13:37.640 --> 13:41.000 And replacing old ones. 13:42.620 --> 13:43.640 Like so. 13:46.570 --> 13:52.500 Okay, so we have these fade actors and I'd like to put all my fade actors into the same folder. 13:52.510 --> 13:59.230 So I'm going to select my fade actors right click move to create new folder, and I'm just going to 13:59.230 --> 14:03.880 click the folder, click it again and rename it to Fade actors. 14:04.780 --> 14:08.830 So now I'll have fade actors and they're different than my dungeon meshes. 14:09.490 --> 14:14.070 Now that I have made actors for these, I can test this out. 14:15.590 --> 14:16.400 Saving all. 14:16.400 --> 14:17.150 First. 14:17.450 --> 14:19.160 I can run beneath here. 14:20.470 --> 14:22.010 And they fade out. 14:22.030 --> 14:22.930 Look at that. 14:25.850 --> 14:27.500 How cool is that? 14:28.660 --> 14:32.740 And you can also just change the size of that box whenever you want to. 14:38.020 --> 14:38.970 Excellent. 14:38.980 --> 14:40.400 Really nice. 14:40.420 --> 14:42.880 This is such a good touch. 14:42.900 --> 14:45.520 Now, of course, these aren't fade actors, right? 14:45.520 --> 14:48.010 So we can easily change that. 14:48.010 --> 14:52.470 This one is three by three, three by three by two. 14:52.480 --> 14:56.920 So I can delete that and just replace it with one of my fade actors. 14:58.730 --> 15:02.120 And then we can make a fade actor for the stairs. 15:02.390 --> 15:05.330 So I'd like you to do this on your own. 15:05.600 --> 15:08.630 Go ahead and make a fade actor for the stairs. 15:08.660 --> 15:10.490 It's got multiple materials. 15:10.490 --> 15:13.610 If you right click and edit it, you'll see that it has four. 15:13.640 --> 15:19.730 So pause the video here, make a fade actor for the stairs and then come back and we'll do it together. 15:22.950 --> 15:26.310 Okay, so we need an A stairs, right? 15:26.310 --> 15:30.600 So I'm going to go browse to my fade actor folder. 15:30.630 --> 15:34.740 Right click on BP Fade Actor, Create a child blueprint class. 15:34.740 --> 15:37.890 Call this FA underscore stairs. 15:39.890 --> 15:42.440 Open that up and we're going to change the mesh. 15:42.680 --> 15:44.500 So we need some stairs. 15:44.510 --> 15:45.920 Browse to it. 15:45.950 --> 15:47.250 Change the mesh. 15:47.270 --> 15:48.680 That's step one. 15:48.680 --> 15:53.630 And we also need dynamic materials for all four of these. 15:53.630 --> 15:55.210 So we'll start with the rail. 15:55.220 --> 15:56.540 We'll browse to it. 15:56.570 --> 15:58.130 We'll duplicate it. 15:58.160 --> 16:01.220 We'll call this rail underscore F. 16:02.490 --> 16:05.130 Change this to a masked material. 16:07.070 --> 16:11.700 Let's see if I still have these nodes copied and I still do, which is amazing. 16:11.720 --> 16:18.800 Stick those into opacity mask and apply and just make a material instance out of it and we're done for 16:18.830 --> 16:19.590 that one. 16:19.610 --> 16:20.960 So that's rail. 16:20.990 --> 16:28.460 Now we have the column, so we'll do the same thing, duplicate, make the fade version. 16:29.180 --> 16:30.800 Change it to masked. 16:34.050 --> 16:36.630 Hook up these nodes to opacity mask. 16:36.930 --> 16:37.920 Apply. 16:38.730 --> 16:40.140 Make an instance. 16:41.590 --> 16:44.770 There's two now for the pillars. 16:45.130 --> 16:46.600 Duplicating it. 16:47.830 --> 16:49.030 Renaming. 16:49.690 --> 16:51.490 Changing to masked. 16:53.210 --> 16:54.560 Adding our nodes. 16:56.170 --> 16:57.130 Apply. 16:57.940 --> 16:59.830 Create a material instance. 17:00.010 --> 17:03.610 And then finally, our fourth material, the steps. 17:04.290 --> 17:05.820 We're going to duplicate. 17:09.170 --> 17:11.210 Rename to underscore f. 17:11.240 --> 17:13.580 Change it to masked. 17:14.330 --> 17:18.470 Paste in those nodes for the opacity mask. 17:19.810 --> 17:23.080 Create a material instance and I'm going to click Save All. 17:23.700 --> 17:25.230 And save all that work. 17:26.520 --> 17:33.900 So now I have material instances that I need to set in the order of rail columns, rims, pillars and 17:33.900 --> 17:34.560 steps. 17:34.560 --> 17:44.040 So here in my fade actor, I can go down to my fade material instances and add four elements. 17:44.890 --> 17:48.160 And we have again, order matters here. 17:48.160 --> 17:50.020 So we need the rail first. 17:50.320 --> 17:52.210 So rail inst. 17:53.280 --> 17:54.300 First. 17:54.990 --> 17:57.890 Next, we need columns, rims. 17:57.900 --> 17:59.340 We'll use the insert. 18:02.830 --> 18:03.310 Next. 18:03.310 --> 18:05.110 We need our pillars. 18:08.360 --> 18:11.030 So we'll choose that, set that. 18:11.120 --> 18:13.580 And finally, we need our stairs. 18:15.320 --> 18:17.990 So setting that material instance as well. 18:18.680 --> 18:22.400 And now we have a stairs fade actor So kind of a lot of steps. 18:22.400 --> 18:26.390 It's kind of a pain because of what we're using for our materials. 18:26.390 --> 18:33.650 But once you got the process down, it's pretty easy to get a new fade actor and we can take this stairs. 18:33.650 --> 18:37.220 Actor I'm actually going to copy its transform. 18:38.040 --> 18:39.030 Its location. 18:39.030 --> 18:40.980 I'm going to copy that and then delete. 18:41.780 --> 18:45.880 And then bring in my new fade actor for stairs. 18:45.890 --> 18:52.520 I'm going to browse to it, bring it in, and then right click on its location and paste so it's right 18:52.520 --> 18:53.690 there in place. 18:54.500 --> 18:55.700 I'm going to save all. 18:55.700 --> 18:58.280 And now let's see if it fades out. 19:02.550 --> 19:03.660 And it does. 19:03.900 --> 19:07.180 And of course, we have one more thing, the rail. 19:07.200 --> 19:07.800 Right. 19:07.800 --> 19:11.340 So let's just make a corner railing fade actor really quick. 19:11.340 --> 19:13.050 I'm going to time lapse this one. 19:38.070 --> 19:41.220 Okay, so I've made a fade actor for this one. 19:41.430 --> 19:45.870 So I'm going to take this actor and copy its location. 19:45.990 --> 19:48.210 It has a rotation of zero. 19:48.300 --> 19:57.390 I can delete that and I can bring in my new fade actor and right click on location and paste and it's 19:57.390 --> 20:00.570 there and we can test it out. 20:02.880 --> 20:04.800 So pressing play. 20:05.100 --> 20:10.440 Let's go behind some things and they fade out. 20:10.680 --> 20:13.140 They fade in and out. 20:26.160 --> 20:34.080 So I'd like them to fade back in as soon as I'm just about above it so I can just really quickly adjust 20:34.080 --> 20:38.700 my characters box so it doesn't have to be quite so low. 20:39.670 --> 20:41.020 I'm going to bring it up a little bit. 20:41.050 --> 20:41.560 Turning off. 20:41.560 --> 20:42.460 Snapping. 20:44.230 --> 20:48.070 And let's see if we can zero in on the right dimensions. 20:48.070 --> 20:50.440 This doesn't have to be that large. 21:04.300 --> 21:04.990 There we go. 21:04.990 --> 21:08.890 And as soon as I get just obstructed, it fades out. 21:08.890 --> 21:12.000 And as soon as I'm no longer obstructed, it fades back in. 21:12.010 --> 21:18.100 So a smaller box can give you a sort of tighter window for fading in and out. 21:21.730 --> 21:24.460 So right here is the rail. 21:25.390 --> 21:29.500 And as soon as it obstructs me, then it fades out. 21:30.520 --> 21:34.270 And as soon as it's no longer obstructing, it fades back in. 21:34.300 --> 21:35.890 That's the behavior I want. 21:41.360 --> 21:42.230 Perfect. 21:42.920 --> 21:43.460 Excellent. 21:43.460 --> 21:45.050 This is a really nice effect. 21:45.050 --> 21:48.740 So it's a really good feature to have for a top down game. 21:48.740 --> 21:50.270 And now we have it. 21:50.420 --> 21:51.350 Awesome. 21:51.500 --> 21:53.740 This isn't a fade actor, is it? 21:53.750 --> 21:55.790 But it could easily be one. 21:56.820 --> 21:58.530 We can just take one of these. 21:59.440 --> 22:01.000 And bring it on over. 22:04.000 --> 22:10.060 Now, one last thing I'd like is to be able to choose whether or not my fade actor blocks visibility 22:10.060 --> 22:13.260 as I don't want these pillars to block visibility. 22:13.270 --> 22:15.070 I want to be able to run around them. 22:15.070 --> 22:20.800 But I do want to be able to click on the staircase and we can't really run to it. 22:20.800 --> 22:25.030 I mean, we can, but it's acting like we're clicking behind it. 22:25.030 --> 22:33.340 So I'd like to have like a boolean that we can set that allows us to block visibility at least when 22:33.340 --> 22:33.970 visible. 22:33.970 --> 22:38.590 So back to our parent blueprint in Actor. 22:39.310 --> 22:39.910 Fade. 22:39.910 --> 22:40.510 Actor. 22:41.050 --> 22:41.800 Fade Actor. 22:41.800 --> 22:49.930 I'm going to go back into fade finished and replace that call that we had where we took our mesh and 22:49.930 --> 22:55.660 we called set collision response to channel choosing our visibility channel. 22:55.660 --> 23:02.560 So if we're finishing our fade and our fade is greater than or equal to one, that means we just faded 23:02.560 --> 23:03.640 back in. 23:03.640 --> 23:07.300 So I'd like to block visibility in that case. 23:07.300 --> 23:15.040 And if we're fading out, if our fade amount is zero, then we're going to ignore visibility. 23:16.430 --> 23:20.720 But I only want to do this if we have a boolean set. 23:20.720 --> 23:24.350 So otherwise we don't want to ever block it. 23:24.350 --> 23:32.810 So what we can do is we can have a branch here and promote the boolean to a variable called block visibility 23:33.920 --> 23:36.320 and we'll block visibility. 23:36.350 --> 23:43.550 If that's true, and we don't need to check it when we're setting it to not block visibility. 23:43.550 --> 23:47.090 But if you don't want to make that unnecessary function call, you could check it. 23:47.090 --> 23:48.470 So we could just have it there. 23:51.160 --> 23:59.560 So as long as my stairs themselves have their default for their mesh set to block visibility, we're 23:59.560 --> 24:00.250 good. 24:00.250 --> 24:05.640 And I'd like this piece of geometry here to also block visibility. 24:05.650 --> 24:08.050 So we're going to go to this one. 24:08.050 --> 24:10.750 I'm going to go ahead and browse to the asset. 24:11.420 --> 24:12.530 Open it up. 24:13.120 --> 24:19.240 We're going to set block visibility to true for this and make sure the mesh is set to block visibility 24:19.240 --> 24:20.470 by default. 24:20.770 --> 24:22.030 And it is. 24:24.530 --> 24:28.640 Okay, so if we click on the stairs, we go on to the stairs. 24:28.640 --> 24:31.190 If we click up here, we go up there. 24:33.520 --> 24:36.490 And we can still fade these things out. 24:40.920 --> 24:46.620 And it looks like I don't want these to block visibility, so I'm going to select them. 24:47.940 --> 24:50.910 Make sure that their meshes don't block visibility. 24:58.420 --> 25:02.020 And I want my boolean here to be exposed. 25:03.230 --> 25:06.980 And I'm going to uncheck that and I'll just duplicate this. 25:14.050 --> 25:15.550 So these other. 25:16.720 --> 25:20.170 Blocks also don't block visibility. 25:22.640 --> 25:23.570 There we go. 25:27.130 --> 25:27.820 Okay. 25:27.820 --> 25:35.230 And these two also should not block visibility, so they won't. 25:43.210 --> 25:45.520 And they still block the fireball, of course. 25:46.340 --> 25:47.210 Perfect. 25:48.280 --> 25:50.280 All right, So things are looking good. 25:50.290 --> 25:54.250 I don't feel like I need this extra aura mesh in there. 25:54.250 --> 25:57.130 And with that, we're ready to continue. 25:57.160 --> 25:59.890 I'll see you in the next video.