1 00:00:04,360 --> 00:00:05,410 ‫Hello and welcome. 2 00:00:05,410 --> 00:00:10,570 ‫In this lecture, we are going to be making moving platforms that look a little bit more visually appealing 3 00:00:10,570 --> 00:00:15,700 ‫like this by using blueprint child classes of a C++ class. 4 00:00:15,700 --> 00:00:17,710 ‫Let's dive in and see how it works. 5 00:00:18,430 --> 00:00:21,100 ‫So enough with this white cube. 6 00:00:21,100 --> 00:00:24,370 ‫Let's start using some of the assets from our asset pack. 7 00:00:24,370 --> 00:00:30,670 ‫Now, with these moving platforms, we don't want to be reconfiguring them every single time that we 8 00:00:30,670 --> 00:00:31,180 ‫create them. 9 00:00:31,180 --> 00:00:35,110 ‫So this is where blueprint classes come in handy. 10 00:00:35,110 --> 00:00:39,520 ‫We can put a lot of the configuration into our blueprints. 11 00:00:39,520 --> 00:00:44,650 ‫So what I'm going to do is I'm actually going to delete out of the seen a current moving platform because 12 00:00:44,650 --> 00:00:48,880 ‫I want to show you how we can create a new blueprint base class for these. 13 00:00:49,180 --> 00:00:55,390 ‫So we've done this very similar process with the third person character that we're using. 14 00:00:55,390 --> 00:00:59,560 ‫This is a blueprint class based off of another class. 15 00:00:59,560 --> 00:01:03,370 ‫Now we can do this based off of our C++ classes. 16 00:01:03,370 --> 00:01:08,830 ‫So we go to our content draw and there's a few ways of doing this, but this is one of them. 17 00:01:08,830 --> 00:01:14,830 ‫We can go to the C++ classes, go to Obstacle Assault, and right click on the moving platform class 18 00:01:14,830 --> 00:01:19,810 ‫that we've got in here and go create Blueprint Class based on moving platform. 19 00:01:19,840 --> 00:01:21,040 ‫So go ahead and do that. 20 00:01:21,490 --> 00:01:27,910 ‫I'm going to call it BP, underscore moving platform and put it in the route of content and hit create 21 00:01:27,910 --> 00:01:28,930 ‫blueprint class. 22 00:01:28,930 --> 00:01:33,520 ‫And then it's going to pop open the Blueprint editor that we are now familiar with. 23 00:01:33,520 --> 00:01:40,750 ‫So I'm going to close my content browser and here you can see that we've got the details pane with all 24 00:01:40,780 --> 00:01:47,850 ‫of the settings that we have for our moving platform and including the move distance, etc. We've also 25 00:01:48,070 --> 00:01:54,310 ‫added in a default scene route component because we didn't have a component within here. 26 00:01:54,310 --> 00:01:58,300 ‫So an actor needs to have some sort of component, otherwise it's not got a location, which that's 27 00:01:58,300 --> 00:02:01,390 ‫why we had to add our cube component in the previous instance. 28 00:02:01,630 --> 00:02:08,020 ‫So what I'm wanting to do here is actually bring in some of the assets from our learning kit. 29 00:02:08,020 --> 00:02:13,340 ‫So if we go to our content draw to the content folder, we'll go to the learning kit and then have a 30 00:02:13,340 --> 00:02:16,750 ‫look at assets and let's have a look if props. 31 00:02:16,750 --> 00:02:18,640 ‫Well, there's lots of things, lots of folders in here. 32 00:02:18,640 --> 00:02:27,490 ‫So what I'm actually going to do is filter go to the filter button and look for the static mesh filter. 33 00:02:27,490 --> 00:02:31,810 ‫And that's going to show us all of the static meshes down under the learning kit. 34 00:02:32,080 --> 00:02:35,110 ‫And in my case, I want to make a kind of stone pillar. 35 00:02:35,110 --> 00:02:43,480 ‫So there's a few ways I could go about this, but I think this kit floor is one possible avenue to explore. 36 00:02:43,690 --> 00:02:47,830 ‫And the other way to have a look at this, of course, is we've got the assets in our scene. 37 00:02:47,830 --> 00:02:53,980 ‫So let's go and fly over to this other platform here, go over to the floating island and we can have 38 00:02:53,980 --> 00:02:55,510 ‫a look at what assets are available. 39 00:02:55,510 --> 00:02:58,270 ‫I can see that there's a stone floor that I'm liking the look of. 40 00:02:58,300 --> 00:03:04,360 ‫If I click on that and have a look at the static mesh in use, you can see it's this static mesh kit, 41 00:03:04,360 --> 00:03:05,320 ‫floor mesh. 42 00:03:05,320 --> 00:03:10,280 ‫Okay, so that's what I'm looking for in the content draw and I could remove the filter if I want to 43 00:03:10,280 --> 00:03:15,550 ‫do it that way and I could look for the kit underscore flaw I think it was. 44 00:03:16,060 --> 00:03:17,230 ‫And that's the one that we want. 45 00:03:17,230 --> 00:03:21,220 ‫There's two versions, actually, so let's have a look at the differences between them. 46 00:03:21,220 --> 00:03:23,980 ‫It looks like the second one is a bit more fleshed out. 47 00:03:23,980 --> 00:03:26,260 ‫There's certainly more properties when I'm hovering over it. 48 00:03:26,260 --> 00:03:28,690 ‫In fact, there's even some levels of detail. 49 00:03:28,690 --> 00:03:31,180 ‫There's four levels of detail where there's only one for the other. 50 00:03:31,180 --> 00:03:35,890 ‫So I'm going to go for the second one and I'm going to drag it in to the viewport. 51 00:03:35,890 --> 00:03:42,220 ‫And you can see it gets added in as a component underneath this default scene route component, which 52 00:03:42,220 --> 00:03:42,820 ‫is just fine. 53 00:03:42,820 --> 00:03:47,800 ‫We don't have to make this kit the absolute center of the whole class. 54 00:03:47,800 --> 00:03:49,570 ‫It doesn't have to be the root component. 55 00:03:49,570 --> 00:03:56,530 ‫We can attach it to the route and that actually allows us to move the center of the platform so that 56 00:03:56,530 --> 00:04:03,220 ‫the center is in the actual middle of the platform rather than being at wherever the center is for this 57 00:04:03,220 --> 00:04:04,540 ‫particular static mesh. 58 00:04:04,540 --> 00:04:05,470 ‫So that's what I've done. 59 00:04:05,470 --> 00:04:09,280 ‫I've moved my platform over to be a little bit off center. 60 00:04:09,800 --> 00:04:12,130 ‫I'm also going to make this into a platform that goes up and down. 61 00:04:12,130 --> 00:04:18,940 ‫So selecting the actor in the components panel or clicking on class defaults in the toolbar, I'm going 62 00:04:18,940 --> 00:04:24,280 ‫to go and change some of the properties in the moving platform section. 63 00:04:24,280 --> 00:04:27,280 ‫So our platform velocity is going to make it go up and down. 64 00:04:27,280 --> 00:04:33,940 ‫So I'm going to give it 200 velocity going up, zero going across, and I'm going to give it a move 65 00:04:33,940 --> 00:04:36,310 ‫distance of 500 to start off with. 66 00:04:36,310 --> 00:04:38,350 ‫And let's see how that looks. 67 00:04:38,350 --> 00:04:41,290 ‫I'm going to bring a moving platform actually into my scene. 68 00:04:41,290 --> 00:04:49,480 ‫So let's go to the scene, go to the outline of search for the third person character and double click 69 00:04:49,480 --> 00:04:51,820 ‫on him to bring us back to this other island. 70 00:04:51,970 --> 00:04:58,360 ‫Then I'm going to go to the content draw, go to the root of content, cancel out my search and drag 71 00:04:58,360 --> 00:05:00,250 ‫in our BP moving platform. 72 00:05:00,250 --> 00:05:00,700 ‫So there we go. 73 00:05:00,700 --> 00:05:03,310 ‫We've got a moving platform in here. 74 00:05:03,610 --> 00:05:08,920 ‫And if I hit play, you can see that it is going indeed up and down like this. 75 00:05:08,920 --> 00:05:16,030 ‫And if I put two of them in the scene so I drag in another one, you'll see that they both react in 76 00:05:16,030 --> 00:05:21,520 ‫the same way and they both are linked because of that blueprint class that they both share. 77 00:05:21,520 --> 00:05:24,700 ‫So let's challenge you to customize your own platform here. 78 00:05:24,700 --> 00:05:29,350 ‫You may choose to go with the approach I'm going with, or you may go entirely different. 79 00:05:29,350 --> 00:05:35,110 ‫You can also create more than one blueprint variant class so that you're moving platforms. 80 00:05:35,110 --> 00:05:39,370 ‫Could be some that float, some that goes outside, some that are pillars coming out of the ground. 81 00:05:39,370 --> 00:05:45,430 ‫I'm going to go for the rock pillar coming out of the ground as the idiom so make. 82 00:05:45,430 --> 00:05:49,330 ‫And if you want to follow along, that's your challenge as well to make it a pillar emerging from the 83 00:05:49,330 --> 00:05:49,900 ‫floor. 84 00:05:49,900 --> 00:05:53,830 ‫What we're going to do is look for some appropriate components from the kit that could be the sides 85 00:05:53,830 --> 00:05:54,610 ‫of the pillar. 86 00:05:54,640 --> 00:05:58,660 ‫And then we're going to drag them into the blueprint class and we're going to position them in place 87 00:05:58,660 --> 00:06:03,220 ‫so that they form the base underneath that floor component that we've already put in. 88 00:06:03,400 --> 00:06:07,660 ‫So pause video and have a go at making your own rising pillar. 89 00:06:10,440 --> 00:06:10,890 ‫Okay. 90 00:06:10,890 --> 00:06:11,610 ‫Welcome back. 91 00:06:11,610 --> 00:06:14,250 ‫So let's stop playing with our rising pillar. 92 00:06:14,250 --> 00:06:19,560 ‫I'm going to go over to the BP moving platform and in fact, I'm going to go over into the scene view 93 00:06:19,560 --> 00:06:25,680 ‫first of all, and I'm going to travel over to the other island here by right clicking on it and going 94 00:06:25,680 --> 00:06:27,180 ‫snap view to object. 95 00:06:27,180 --> 00:06:32,430 ‫So I snap right to that island and then we're going to look for different walls that I could use. 96 00:06:32,460 --> 00:06:37,110 ‫Okay, so there's a few rocky walls here that I'm seeing that could be a good component. 97 00:06:37,140 --> 00:06:40,980 ‫You could also put little holes in the wall if you wanted to. 98 00:06:41,010 --> 00:06:47,520 ‫There's some kind of sloping roof, but that's kind of already at an angle that might not be the ideal. 99 00:06:47,520 --> 00:06:50,640 ‫There's also we could use these upturned islands. 100 00:06:50,640 --> 00:06:54,810 ‫These could be used as part of a more rocky and craggy base if we wanted to. 101 00:06:54,810 --> 00:07:00,690 ‫But I'm going to go for a slightly more boring wall, so I'm just going to use the kit wall. 102 00:07:01,410 --> 00:07:02,860 ‫Let's go over to the moving platform. 103 00:07:02,860 --> 00:07:09,570 ‫I'm going to open up the content drawer and look for kit and score wall and then using let's find which 104 00:07:09,570 --> 00:07:11,100 ‫element is the most appropriate. 105 00:07:11,100 --> 00:07:12,060 ‫I think it's this one here. 106 00:07:12,060 --> 00:07:13,710 ‫It's got four levels of detail. 107 00:07:13,710 --> 00:07:19,320 ‫So that's the one I want and I'm going to drag it in to the world and I'm going to need a couple of 108 00:07:19,320 --> 00:07:19,680 ‫them. 109 00:07:19,680 --> 00:07:22,410 ‫But let's start off with just the one. 110 00:07:22,470 --> 00:07:31,260 ‫So I'm going to position it down and across from our platform like so, and then I'm going to duplicate 111 00:07:31,260 --> 00:07:37,080 ‫it with just a control C, control V, and then I can rotate using the rotate tool. 112 00:07:37,110 --> 00:07:37,530 ‫There it go. 113 00:07:37,530 --> 00:07:40,080 ‫It's made the other side automatically. 114 00:07:40,080 --> 00:07:42,300 ‫Now let's go and paste it again. 115 00:07:42,300 --> 00:07:46,320 ‫Use the move tool to just flip it over to the other side here. 116 00:07:46,350 --> 00:07:50,130 ‫And I'm not being too careful with positioning because I think it's rocky. 117 00:07:50,130 --> 00:07:51,840 ‫It can be a little bit haphazard. 118 00:07:51,960 --> 00:07:58,350 ‫Then I'm going to copy the one side that's already aligned and bring it over to the other. 119 00:07:58,350 --> 00:08:03,090 ‫So in total we have about four wall elements like so. 120 00:08:03,270 --> 00:08:09,480 ‫And then what we're going to do is we're going to take all four of them and we're going to copy them 121 00:08:09,480 --> 00:08:16,650 ‫and paste them and we're going to drag them on down to be the elements down below as well, so that 122 00:08:16,650 --> 00:08:21,120 ‫this is a nice, tall, rocky pillar that should allow us to pop out of the ground. 123 00:08:21,120 --> 00:08:27,240 ‫And I'm just going to do one more level down so that we can use it in particularly tool situations. 124 00:08:27,390 --> 00:08:30,750 ‫And then we're going to go and save go back over to the main level. 125 00:08:30,750 --> 00:08:35,220 ‫We're going to go double click on our third person character to zoom us back and hit play. 126 00:08:35,220 --> 00:08:41,250 ‫And now these two rocky pillars that I've got are popping in and out of the ground just fine. 127 00:08:41,250 --> 00:08:43,110 ‫You can see they're going in sync with each other. 128 00:08:43,110 --> 00:08:49,710 ‫We could work on changing that if we wanted to, but they are going up and down and both have sides 129 00:08:49,710 --> 00:08:55,530 ‫to them so I can't get trapped underneath and also gives them a bit of a sense of grounding rather than 130 00:08:55,530 --> 00:08:58,560 ‫looking like magical, floaty platforms. 131 00:08:58,560 --> 00:08:59,040 ‫Great stuff. 132 00:08:59,040 --> 00:09:04,830 ‫So we've learnt about how we can create blueprint child classes off of C++ classes. 133 00:09:04,830 --> 00:09:06,750 ‫I'll see you in the next lecture.