WEBVTT 00:07.200 --> 00:08.340 Welcome back. 00:08.850 --> 00:12.630 In this section we're concerned with map entrances. 00:12.900 --> 00:18.030 Really, map entrances and map exits are the same thing because they take you somewhere else. 00:18.030 --> 00:19.230 Some other map. 00:19.560 --> 00:25.260 What I'm interested in is creating some kind of actor that once we reach it, it'll take us into another 00:25.260 --> 00:25.920 map. 00:26.280 --> 00:32.790 Now this is going to involve several different things, but the most basic of these things is I'd like 00:32.790 --> 00:38.790 to know when we're highlighting a certain actor, if I hover over a map entrance, I want to see it 00:38.790 --> 00:39.750 highlighted. 00:40.640 --> 00:45.680 It would be nice if we could highlight dungeon entrances the same way we could highlight enemies. 00:46.250 --> 00:49.730 Now, if I highlight an enemy, then it becomes red. 00:49.730 --> 00:55.280 But if I highlight, say, a dungeon entrance or another map entrance, I want to highlight it, but 00:55.280 --> 00:56.060 not red. 00:56.090 --> 00:57.980 I like it to be a different color. 00:57.980 --> 01:03.920 So how do we get this functionality, this highlighting, but different colors depending on what we're 01:03.920 --> 01:04.730 highlighting? 01:05.090 --> 01:10.640 Well, first we have to go to the material that's giving us this highlight effect. 01:11.270 --> 01:15.950 That's our post process material that we have in our post-process volume. 01:15.950 --> 01:21.770 If we select our post-process volume and in the details panel, search for material. 01:21.800 --> 01:26.600 Here's the array of post-process materials used in this post-process volume. 01:26.600 --> 01:33.230 And if we browse to px highlight, here is our post-process material that's giving us the highlight 01:33.230 --> 01:33.980 effect. 01:35.100 --> 01:39.030 Now, we don't have to understand all of the inner workings of this material. 01:39.030 --> 01:42.120 As you can see, there's kind of a lot going on here. 01:42.480 --> 01:46.170 The important part is right here where we have these colors. 01:46.200 --> 01:48.420 Now we're only using red. 01:48.420 --> 01:53.370 And for that reason, this material only has the ability to highlight red. 01:53.370 --> 02:01.320 And it's highlighting something if that particular thing is using the custom depth stencil render pass. 02:01.320 --> 02:07.560 And if that thing has its custom stencil value set to 250. 02:07.830 --> 02:14.460 Now this system takes in the scene and checks out the scene's custom stencil values. 02:14.460 --> 02:23.520 And anywhere in the scene where a given texel is using the custom depth render pass that texel, think 02:23.520 --> 02:28.740 of texels as pixels in material space has a numerical value. 02:29.070 --> 02:36.060 So we're getting that numerical value here and for the surrounding texels of the enemy, as long as 02:36.060 --> 02:43.080 it's rendering to custom depth stencil, then these texels around the enemy have the value of 250. 02:43.110 --> 02:48.030 Now let's just say that this wire here carries that value of 250. 02:48.030 --> 02:50.280 It passes it into an if node. 02:50.280 --> 02:59.700 If takes in two inputs A and B scalar values, and if A is 250 and b is 250, then we have three other 02:59.700 --> 03:00.810 nodes here. 03:01.550 --> 03:04.460 That determine what gets returned from this. 03:04.490 --> 03:08.000 If based on A and B's values compared to each other. 03:08.300 --> 03:16.040 If A is greater than B, if A is equal to B, and if A is less than b, all give the same output here, 03:16.340 --> 03:20.930 and that output is what we have passed into these pins, which is the color red. 03:21.470 --> 03:27.800 So we can change this to be more conditional based on that custom depth stencil value. 03:28.220 --> 03:33.950 So let's just say we'd like to have a different color if we're using the custom depth stencil value 03:33.950 --> 03:35.720 251 for instance. 03:36.260 --> 03:43.460 Well, if the value that we're checking here a is greater than 250, we should have a different color 03:43.460 --> 03:44.360 passed in. 03:45.080 --> 03:50.270 We could pass in, say, one of these other colors right into A is greater than B. 03:51.240 --> 03:53.100 So let's do it for a second. 03:53.100 --> 03:57.780 Let me take this blue color here and take its value and plug it in. 03:58.670 --> 03:59.630 Right here to the. 03:59.630 --> 04:03.560 If for A is greater than B, what happens when we do that? 04:03.560 --> 04:09.980 Well, if we apply this material and we come back into the scene and select our goblin, for instance, 04:09.980 --> 04:14.150 we can take this goblin and select its mesh in the details panel. 04:16.400 --> 04:17.450 Here it is. 04:17.450 --> 04:19.160 And for its mesh. 04:20.220 --> 04:22.950 I can search for custom depth. 04:23.890 --> 04:26.230 And here we have render custom depth pass. 04:26.260 --> 04:30.820 Remember we enable or disable this to allow something to be highlighted. 04:30.820 --> 04:34.420 If I enable it and change custom depth stencil value. 04:34.420 --> 04:38.500 First of all before I change it, notice that it's highlighted red, right? 04:38.500 --> 04:47.650 And that's because this if says if this value here is either equal to B which is 250 return red, but 04:47.650 --> 04:51.760 also if it's less than B return red, well zero is the value. 04:51.790 --> 04:54.310 See custom depth stencil value zero. 04:54.340 --> 04:55.450 That's less than b. 04:55.450 --> 04:56.470 So we get red. 04:56.470 --> 04:59.560 But now let's try putting in 251. 05:01.100 --> 05:05.360 Oh, and I it worked, but I was actually selecting this ground tile here. 05:05.390 --> 05:11.870 Notice the ground tile is now outlined in blue, so I'm going to have to uncheck that for the ground 05:11.870 --> 05:14.690 tile and select the enemy. 05:14.690 --> 05:19.010 And with the enemies mesh selected now I can enter 251. 05:19.010 --> 05:22.190 And now we see that the enemy is highlighted blue. 05:23.030 --> 05:29.570 So now we have the capability of highlighting things blue if they're custom depth stencil value is 251. 05:29.870 --> 05:32.330 Well let's say we'd like more colors than that. 05:32.420 --> 05:40.160 Well we have this other if here and this other if is checking that custom depth stencil value against 05:40.160 --> 05:41.330 251. 05:41.330 --> 05:45.320 And it has a case for when A is greater than B. 05:45.320 --> 05:50.150 So if we have a value greater than 251 we're passing in something else. 05:50.150 --> 05:53.810 If it's equal to 251, we're passing in the color blue. 05:53.840 --> 05:58.250 And if it's less than 251 we're passing in the color blue. 05:58.250 --> 06:04.070 So what happens if we take this which could potentially be blue and hook this into A is greater than 06:04.100 --> 06:04.850 B here. 06:05.830 --> 06:11.470 Well, now we have the capability of read for 250 and blue for 251. 06:11.470 --> 06:19.330 If we apply this and take our goblin with its mesh selected and change it back to 250, we get red and 06:19.330 --> 06:22.090 changing it to 251 we get blue. 06:22.090 --> 06:29.020 Now, going back to this material, what we have for A is greater than B is an if and this if. 06:29.570 --> 06:36.140 Checks the value against 251 if it's equal or less than we get blue, but if it's greater, we get the 06:36.140 --> 06:37.160 result of this other. 06:37.160 --> 06:43.970 If here, which is checking the value against 252, and if it's greater than or equal to 252, we get 06:43.970 --> 06:44.690 tan. 06:44.690 --> 06:51.140 So for that reason, if we take our goblin and select its mesh and set the custom depth stencil value 06:51.140 --> 06:52.520 to 252. 06:53.410 --> 06:56.200 Well, now we get this tan color. 06:56.590 --> 07:01.480 So we have three custom depth stencil values 250 which corresponds to red. 07:01.510 --> 07:07.630 251 which corresponds to blue, and 252 which corresponds to tan. 07:07.930 --> 07:15.880 So now that we've enhanced or upgraded this post-process highlight material, we can now use blue and 07:15.880 --> 07:17.860 tan for anything we like. 07:18.310 --> 07:19.990 So this is pretty cool. 07:20.290 --> 07:29.560 And remember that in our IDE we went into aura dot h, our project header file, and we defined custom 07:29.560 --> 07:31.360 depth red to be 250. 07:31.600 --> 07:35.470 We can also define our blue and tan as well. 07:35.470 --> 07:51.310 And I'd like to do that I'd like to pound define custom Depth blue as 251 and define custom depth tan 07:52.720 --> 07:54.340 as 250. 07:56.500 --> 08:04.090 And now with this we can set the custom depth stencil values to anything to 251 or 250. 08:04.090 --> 08:11.230 As long as we enable that custom depth stencil pass render custom depth stencil pass this right here. 08:11.230 --> 08:18.370 And by the way, I've mentioned this when we first did this highlight material way back at the beginning 08:18.370 --> 08:18.970 of the course. 08:18.970 --> 08:21.220 That's quite a long time ago. 08:21.220 --> 08:26.830 So I'm going to refresh your memory on something we had to do to make this all work, because you may 08:26.830 --> 08:32.800 add this to another project, and it's not going to work unless you go into project settings and you 08:32.800 --> 08:39.580 search for custom depth, and you make sure that custom Depth stencil pass is enabled with stencil, 08:39.580 --> 08:42.850 not just enabled by default, it just says enabled. 08:42.850 --> 08:47.380 So you might check this and see enabled and think, well, we can use the custom depth stencil. 08:47.380 --> 08:54.160 Well we have to use custom Depth stencil pass, which means we need this enabled with stencil to use 08:54.160 --> 08:55.180 this feature. 08:55.180 --> 08:57.490 So make sure that that is set there. 08:57.490 --> 09:02.380 Otherwise you'll be very frustrated and not know why this isn't working for you. 09:03.030 --> 09:04.620 Okay, so this is great. 09:04.650 --> 09:08.190 Now I can leave this as tan. 09:08.190 --> 09:13.470 It doesn't matter because if I come back and hover over the enemy, it'll set this back to red. 09:13.950 --> 09:20.820 And in addition to that, if I unhighlight it sets that render custom depth pass boolean back to false. 09:20.820 --> 09:23.340 So we're not actually rendering it anymore. 09:23.490 --> 09:27.270 And this comes back to what we're doing when we cursor trace. 09:27.870 --> 09:33.240 Now I'd like to be able to cursor trace over multiple types of objects, not just enemies. 09:33.240 --> 09:36.120 And I'd like to be able to highlight multiple things. 09:36.450 --> 09:40.590 Now our highlight code is an interface function. 09:40.590 --> 09:44.040 We have an highlight and a Unhighlight interface function. 09:44.040 --> 09:49.800 And we put that in the combat interface because thus far we've only needed to highlight enemies. 09:49.800 --> 09:52.410 But now we need to highlight non enemies. 09:52.410 --> 09:59.040 And for that reason I'd like to make a new interface a highlight interface specific to highlighting 09:59.040 --> 10:03.180 that we can add to any actor and give it the ability to highlight. 10:03.180 --> 10:08.640 So for that reason, we're going to make a new interface and we're going to do that in the next video. 10:08.820 --> 10:09.900 I'll see you soon.