1 00:00:00,000 --> 00:00:03,510 Hey, welcome back, my fellow game developers. 2 00:00:03,510 --> 00:00:05,880 So as you can see what I've promised you 3 00:00:05,880 --> 00:00:08,550 that we are going to make it a little bit better. 4 00:00:08,550 --> 00:00:10,470 I've delivered on my promise. 5 00:00:10,470 --> 00:00:11,880 Now when we run the game, 6 00:00:11,880 --> 00:00:16,410 you'll notice that there are no blue spots, no blue lines. 7 00:00:16,410 --> 00:00:17,610 And if I walked through, 8 00:00:17,610 --> 00:00:18,830 I tried to walk through this. 9 00:00:18,825 --> 00:00:21,435 It's a wall. If I walk up, It's a wall. 10 00:00:21,435 --> 00:00:24,255 Obviously, we have a couple of things that we can change. 11 00:00:24,255 --> 00:00:25,895 If you look closely in Scene mode, 12 00:00:25,890 --> 00:00:28,200 obviously, it's not perfect yet, 13 00:00:28,200 --> 00:00:30,000 but you can see when I shoot a wall, 14 00:00:30,000 --> 00:00:31,710 it is a wall from the back, 15 00:00:31,710 --> 00:00:34,490 from the front, and the enemy still chases us. 16 00:00:34,485 --> 00:00:37,215 Everything is good, everything works fine. 17 00:00:37,215 --> 00:00:41,995 So let's not waste any more time and let's get started. 18 00:00:41,990 --> 00:00:44,200 Oh, case. 19 00:00:44,200 --> 00:00:50,530 So now that we have set up everything time to use it in a proper way. 20 00:00:50,530 --> 00:00:53,800 So the first thing that we need to understand is 21 00:00:53,800 --> 00:00:57,990 the tile map and what the inspector of that tile map does. 22 00:00:57,985 --> 00:01:00,945 So we've created the walls, the ground, 23 00:01:00,940 --> 00:01:03,690 and you can see that they also have, 24 00:01:03,685 --> 00:01:08,715 each one of them has a tile map component and a tile map renderer. 25 00:01:08,710 --> 00:01:13,180 Because the tile map renderer works just like the sprite renderer, 26 00:01:13,180 --> 00:01:14,950 we can also choose a layer. 27 00:01:14,950 --> 00:01:19,500 So for example, I can go to the ground and choose the layer background, 28 00:01:19,495 --> 00:01:21,835 the walls, the layer background. 29 00:01:21,835 --> 00:01:23,325 And I can make, for example, 30 00:01:23,320 --> 00:01:27,080 the walls one and the Ground Zero. 31 00:01:27,080 --> 00:01:28,610 You can play around if you want. 32 00:01:28,610 --> 00:01:31,670 You can even create your own sorting layer depending on 33 00:01:31,670 --> 00:01:35,210 how many things you want to be in the foreground or background. 34 00:01:35,210 --> 00:01:37,640 So I'm going to, first of all, 35 00:01:37,640 --> 00:01:41,150 delete everything or erase everything, should I say? 36 00:01:41,150 --> 00:01:46,670 So I erase everything and you can see why is this not getting erased. 37 00:01:46,670 --> 00:01:49,310 So let me just make the screen bigger. 38 00:01:49,310 --> 00:01:51,610 Why is this not getting a raise? 39 00:01:51,605 --> 00:01:55,705 Well, because we are using where is it? 40 00:01:55,700 --> 00:01:57,620 The active tile map is the ground. 41 00:01:57,620 --> 00:02:00,850 So we can only delete things that are on the ground. 42 00:02:00,845 --> 00:02:02,485 If I choose the walls. 43 00:02:02,480 --> 00:02:09,020 There you go. I can now delete it because when I created this, I used walls. 44 00:02:09,020 --> 00:02:11,110 So let's just do a little test. 45 00:02:11,105 --> 00:02:13,835 Now that we have the sorting layers setup, 46 00:02:13,835 --> 00:02:16,675 I'm going to create this big square right here, 47 00:02:16,670 --> 00:02:18,790 which is, oops, not the ground, 48 00:02:18,785 --> 00:02:20,585 excuse me, the ground. 49 00:02:20,585 --> 00:02:25,525 And now I'm going to create this little ground right here. 50 00:02:25,520 --> 00:02:30,650 And now if I go into the walls and let's go ahead and add this one. 51 00:02:30,650 --> 00:02:34,310 So you remember why did we have the blue lines before? 52 00:02:34,310 --> 00:02:36,650 Because we had these outlines right here. 53 00:02:36,650 --> 00:02:38,380 You can see that they are transparent, 54 00:02:38,375 --> 00:02:41,045 so they only reflect what was behind. 55 00:02:41,045 --> 00:02:42,985 So now because these are, 56 00:02:42,980 --> 00:02:44,290 let me click on this one. 57 00:02:44,285 --> 00:02:49,135 So now because this is the walls and the walls are rendered in front of the background. 58 00:02:49,130 --> 00:02:51,200 When I put them here, there you go, 59 00:02:51,200 --> 00:02:53,290 you can see that there are no longer 60 00:02:53,285 --> 00:02:58,225 any blue lines behind which represent the color of the background of the camera. 61 00:02:58,220 --> 00:03:00,470 I can also do this right here. 62 00:03:00,470 --> 00:03:01,970 So I'm going to select them. 63 00:03:01,970 --> 00:03:04,210 And you can see because they are walls, 64 00:03:04,205 --> 00:03:07,255 I can immediately draw on top of them. 65 00:03:07,250 --> 00:03:09,730 But you can see right now to inconsistency, 66 00:03:09,725 --> 00:03:11,365 how do I, for example, 67 00:03:11,360 --> 00:03:15,500 drought is to have a continuous third wall and fourth wall. 68 00:03:15,500 --> 00:03:16,990 Well, in that case, 69 00:03:16,985 --> 00:03:19,075 we'll need to select something different, 70 00:03:19,070 --> 00:03:22,540 which is these lines right here. 71 00:03:22,535 --> 00:03:27,785 And now we can add the illusion or create the illusion that we have. 72 00:03:27,785 --> 00:03:32,975 Let me just create the illusion that we have these all connected together. 73 00:03:32,975 --> 00:03:34,555 And if you look in the game, 74 00:03:34,550 --> 00:03:35,740 if I run the game, 75 00:03:35,735 --> 00:03:37,795 Also, it doesn't matter. 76 00:03:37,790 --> 00:03:40,760 Let me just make this game window bigger. There you go. 77 00:03:40,760 --> 00:03:43,280 You can see how all of that looks at, 78 00:03:43,280 --> 00:03:45,890 looks as if we have everything normally 79 00:03:45,890 --> 00:03:49,220 setup and we can just run the game and walk around. 80 00:03:49,220 --> 00:03:53,650 And then you go, you can see that I can walk around on top of this. 81 00:03:53,645 --> 00:03:55,735 Everything works perfectly fine. 82 00:03:55,730 --> 00:03:59,120 But the problem is that now I can walk through 83 00:03:59,120 --> 00:04:02,810 the walls and this is usually not a huge problem, 84 00:04:02,810 --> 00:04:06,260 but having your player leave forever plus, 85 00:04:06,260 --> 00:04:08,260 plus when we are shooting, 86 00:04:08,255 --> 00:04:11,305 you can see that the bullets will keep on going 87 00:04:11,300 --> 00:04:14,570 forever because they are not interacting with anything. 88 00:04:14,570 --> 00:04:16,340 Or we don't have any more walls, 89 00:04:16,340 --> 00:04:18,380 they are not interacting with the walls. 90 00:04:18,380 --> 00:04:21,100 So how are we going to fix this? 91 00:04:21,095 --> 00:04:26,015 Well, we can go ahead and start adding colliders and all of that good stuff. 92 00:04:26,015 --> 00:04:31,325 But obviously this is not the most efficient solution of solving the problem. 93 00:04:31,325 --> 00:04:33,235 What we can do, on the other hand, 94 00:04:33,230 --> 00:04:36,610 add something called a tile map collider. 95 00:04:36,605 --> 00:04:38,245 So if I go onto the walls, 96 00:04:38,240 --> 00:04:40,190 and that is why we've created walls, 97 00:04:40,190 --> 00:04:41,500 not just the ground. 98 00:04:41,495 --> 00:04:43,145 Go to the Inspector. 99 00:04:43,145 --> 00:04:46,195 I can add a component in here which is going to be 100 00:04:46,190 --> 00:04:51,190 the tile map collider 2D. And there you go. 101 00:04:51,185 --> 00:04:57,835 You can see that now everything under the walls has the green collider on him. 102 00:04:57,830 --> 00:04:59,800 And you can see that they are intersecting. 103 00:04:59,795 --> 00:05:02,215 Why? Because we made them just a little bit 104 00:05:02,210 --> 00:05:05,330 bigger than where's the picture? There you go. 105 00:05:05,330 --> 00:05:09,350 We made them just a little bit bigger than 16. We made them 15. 106 00:05:09,350 --> 00:05:15,370 If I make them 16, I think we can start seeing cracks in between each sprite. 107 00:05:15,365 --> 00:05:17,795 Now you know what? It looks good enough. 108 00:05:17,795 --> 00:05:19,915 I think there is no discrepancy in. 109 00:05:19,910 --> 00:05:21,890 Okay, so let's keep it at 16. 110 00:05:21,890 --> 00:05:25,000 So I changed the pixels per unit to 16. 111 00:05:24,995 --> 00:05:26,875 And now if I choose the walls, 112 00:05:26,870 --> 00:05:28,640 there is still an intersection, 113 00:05:28,640 --> 00:05:31,880 but that's okay, that's not a huge problem. 114 00:05:31,880 --> 00:05:33,880 Let me just demonstrate that this works. 115 00:05:33,875 --> 00:05:35,395 So now if I run, 116 00:05:35,390 --> 00:05:39,830 you can see that I hit a wall and I cannot go through it anymore. 117 00:05:39,830 --> 00:05:41,680 Excellent, everything is working. 118 00:05:41,675 --> 00:05:43,315 They are on the default layer. 119 00:05:43,310 --> 00:05:46,940 You can change the layer if you want also of each tile map. 120 00:05:46,940 --> 00:05:49,940 But now there is something that we need to add this, 121 00:05:49,940 --> 00:05:52,490 adding this glider is not enough. 122 00:05:52,490 --> 00:05:56,900 What we do is we need to add something called a composite glider. 123 00:05:56,899 --> 00:06:02,689 Why? Let me show you how that will change everything and you'll understand by yourself. 124 00:06:02,690 --> 00:06:05,910 So now that I've added a composite Collider, 125 00:06:05,914 --> 00:06:09,814 you'll notice that I also added a automatically a rigid body. 126 00:06:09,815 --> 00:06:13,475 So a rigid body is required when you have a composite collider. 127 00:06:13,474 --> 00:06:16,924 And if you look right here in the tile map collider, 128 00:06:16,924 --> 00:06:20,374 you can see that we have something called used by compass. 129 00:06:20,375 --> 00:06:23,185 If I turn this on, there you go. 130 00:06:23,180 --> 00:06:26,900 You see that we no longer have a lot of gliders. 131 00:06:26,900 --> 00:06:28,130 That means just do that again, 132 00:06:28,130 --> 00:06:32,500 uncheck the US by composite will notice that we have a lot of colliders. 133 00:06:32,495 --> 00:06:34,475 When I do use the composite, 134 00:06:34,474 --> 00:06:38,184 we only have one collider on all the shapes. 135 00:06:38,180 --> 00:06:40,640 This is extremely helpful. 136 00:06:40,640 --> 00:06:44,390 I cannot emphasize the fact how much this saves 137 00:06:44,390 --> 00:06:48,740 energy and computational power from our compute. 138 00:06:48,740 --> 00:06:54,800 This will allow us to create a single collider around a lot of entangled gliders. 139 00:06:54,799 --> 00:06:59,809 So make sure that you add a composite collider 2D with that. 140 00:06:59,810 --> 00:07:00,610 Understood. 141 00:07:00,605 --> 00:07:03,545 Now, it's time for a small challenge. 142 00:07:03,545 --> 00:07:04,835 Or before we do that, 143 00:07:04,835 --> 00:07:10,265 I just want to run the game to maybe make you understand what the challenges. 144 00:07:10,265 --> 00:07:11,755 If I run the game. 145 00:07:11,750 --> 00:07:13,400 And there you go, 146 00:07:13,400 --> 00:07:20,720 you can see that something is definitely seriously make this part of your game some, 147 00:07:20,720 --> 00:07:22,400 at some kinds of mechanics of the game. 148 00:07:22,400 --> 00:07:26,050 So the player plays around with the game and with the map. 149 00:07:26,045 --> 00:07:30,445 So hey, the, let me just zoom out a bit so you can see that 150 00:07:30,440 --> 00:07:35,060 the map isn't behaving completely how it should be. 151 00:07:35,060 --> 00:07:36,820 I think that's an understatement. 152 00:07:36,815 --> 00:07:39,895 Let me just try to push that off and there you go. 153 00:07:39,890 --> 00:07:46,010 So now we no longer have a map and it keeps falling so well that understood. 154 00:07:46,010 --> 00:07:51,280 Out of the way, that thing we'd think I'm not fix the problem was the following map. 155 00:07:51,275 --> 00:07:52,795 If you don't want any hints, 156 00:07:52,790 --> 00:07:53,810 you know how to fix this. 157 00:07:53,810 --> 00:07:56,060 Pause the video right now, go to the challenge. 158 00:07:56,060 --> 00:07:59,420 If not, check in the inspector on the tile map, 159 00:07:59,420 --> 00:08:01,100 you'll see a rigid body. 160 00:08:01,100 --> 00:08:04,430 This means that we have a gravity being applied. 161 00:08:04,430 --> 00:08:07,420 Either remove the gravity scale or even better, 162 00:08:07,415 --> 00:08:11,825 you can make the whole object either kinematic or static. 163 00:08:11,825 --> 00:08:15,235 I would recommend static because static means it will never move 164 00:08:15,230 --> 00:08:19,460 and obviously our map shouldn't move unless you want to, 165 00:08:19,460 --> 00:08:22,000 I don't know, add the rotating map. 166 00:08:21,995 --> 00:08:24,325 Weird thing that we just experienced. 167 00:08:24,320 --> 00:08:25,630 So with that done, 168 00:08:25,625 --> 00:08:27,095 pause the video right now, 169 00:08:27,095 --> 00:08:30,005 go do the Chaldean. 170 00:08:30,005 --> 00:08:32,245 Okay, welcome back. 171 00:08:32,240 --> 00:08:34,490 So how did you get on with that? 172 00:08:34,490 --> 00:08:44,680 I'm going to go ahead and whereas the walls rigid body make the static, run the game. 173 00:08:44,675 --> 00:08:48,595 And now we should see that there is nothing falling anymore 174 00:08:48,590 --> 00:08:52,460 and all the colliders work perfectly fine. 175 00:08:52,460 --> 00:08:55,180 Okay, with that done, I hope you enjoy it. 176 00:08:55,175 --> 00:08:56,395 And in the next video, 177 00:08:56,390 --> 00:08:58,610 make sure to create some kind of map. 178 00:08:58,610 --> 00:09:02,950 It should be bigger than the camera because we will be implementing a fall camp. 179 00:09:02,945 --> 00:09:04,435 So why is that? 180 00:09:04,430 --> 00:09:07,810 Well, if I let's say add a bit more ground here, 181 00:09:07,805 --> 00:09:10,015 make sure that we have the ground selected. 182 00:09:10,010 --> 00:09:11,150 I add the ground. 183 00:09:11,150 --> 00:09:13,670 Let's see if I make this a huge ground. 184 00:09:13,670 --> 00:09:18,680 I run the game. I want to be able to walk around our map and runway, 185 00:09:18,680 --> 00:09:20,870 just like the game that we saw in the beginning. 186 00:09:20,870 --> 00:09:23,600 So I want to have the freedom to walk around. 187 00:09:23,600 --> 00:09:26,500 But obviously, if I look in the game menu, 188 00:09:26,495 --> 00:09:28,135 I cannot see anything. 189 00:09:28,130 --> 00:09:29,650 I can see it in the scene mode. 190 00:09:29,645 --> 00:09:32,665 I can not see it in our game. Why? 191 00:09:32,660 --> 00:09:34,280 Because the camera right here, 192 00:09:34,280 --> 00:09:37,640 you can see, let me just this is the camera, 193 00:09:37,640 --> 00:09:39,160 this is the main camera, 194 00:09:39,155 --> 00:09:43,915 so we will have to move it around so we can always follow the player. 195 00:09:43,910 --> 00:09:48,250 And that is something that we'll learn in the next video when it comes to cinema cine, 196 00:09:48,245 --> 00:09:49,615 I hope you are enjoying, 197 00:09:49,610 --> 00:09:52,830 I hope you are always committing your changes. 198 00:09:52,834 --> 00:09:57,294 And I hope you've left a review because it helps me out a lot. 199 00:09:57,290 --> 00:09:59,760 See you in the next video.