1 00:00:00,000 --> 00:00:03,800 Welcome back, My favorite game developers. 2 00:00:03,795 --> 00:00:06,105 In this video, we are going to be not 3 00:00:06,105 --> 00:00:08,865 only transitioning to the next level, 4 00:00:08,865 --> 00:00:11,285 we are also going to be transitioning. 5 00:00:11,280 --> 00:00:13,340 They're in a much cooler way. 6 00:00:13,335 --> 00:00:15,215 So now when we walk through the portal, 7 00:00:15,210 --> 00:00:16,320 we don't go immediately. 8 00:00:16,320 --> 00:00:19,580 We wait two seconds and then we go and we can even 9 00:00:19,575 --> 00:00:23,315 adjust this from the level manager as much as we want. 10 00:00:23,310 --> 00:00:24,620 So you can see we have 11 00:00:24,615 --> 00:00:27,585 a central figure now which is the level manager. 12 00:00:27,585 --> 00:00:29,505 We are going to use coroutines, 13 00:00:29,505 --> 00:00:32,735 scene manager, and all of that good stuff. 14 00:00:32,730 --> 00:00:37,390 So let's not waste any more time and let's get started. 15 00:00:37,389 --> 00:00:43,759 Oh, okay, so now we need a level manager because, 16 00:00:43,760 --> 00:00:45,680 okay, It's all fun and games 17 00:00:45,680 --> 00:00:48,250 when the portal is transitioning us. 18 00:00:48,245 --> 00:00:50,695 But when it comes to big games, 19 00:00:50,690 --> 00:00:53,630 we don't want this particular object to be in 20 00:00:53,630 --> 00:00:57,710 control of the way we move through scenes. 21 00:00:57,710 --> 00:01:01,580 It's much better to have the swan determine which level 22 00:01:01,580 --> 00:01:03,350 we want to move through and then 23 00:01:03,350 --> 00:01:05,660 have a more central object, 24 00:01:05,660 --> 00:01:08,390 which is the level manager that will handle 25 00:01:08,390 --> 00:01:11,500 the process of moving us from level to level. 26 00:01:11,495 --> 00:01:13,675 This later on as you grow. 27 00:01:13,670 --> 00:01:16,420 For now, it doesn't have to be like this. 28 00:01:16,415 --> 00:01:18,455 You can simply just use the portal. 29 00:01:18,455 --> 00:01:20,575 The game will work forever. 30 00:01:20,570 --> 00:01:22,450 When it comes to big games, 31 00:01:22,445 --> 00:01:25,225 the actual object doesn't do the job. 32 00:01:25,220 --> 00:01:26,570 You have a more, 33 00:01:26,570 --> 00:01:28,550 let's say a bigger authority, 34 00:01:28,550 --> 00:01:29,930 a bigger head, which is the level 35 00:01:29,930 --> 00:01:31,690 manager that handles that. 36 00:01:31,685 --> 00:01:33,775 So I'm going to right-click create an 37 00:01:33,770 --> 00:01:35,860 empty, reset its position. 38 00:01:35,855 --> 00:01:39,685 And this is going to be the level manager. 39 00:01:39,680 --> 00:01:42,610 You can satisfy wherever you want. 40 00:01:42,605 --> 00:01:44,455 And you can go into the scripts right 41 00:01:44,450 --> 00:01:46,220 here and to the managers, 42 00:01:46,220 --> 00:01:49,130 right-click create C-sharp script. 43 00:01:49,130 --> 00:01:52,010 The level manager. 44 00:01:52,010 --> 00:01:55,780 Hit Enter and wait for it just a little bit 45 00:01:55,775 --> 00:01:57,805 for it to compile 46 00:01:57,800 --> 00:02:00,550 the goal level manager at the scripting here. 47 00:02:00,545 --> 00:02:02,665 And let's go ahead and open it up. 48 00:02:02,660 --> 00:02:05,440 Now, first thing we want to do 49 00:02:05,435 --> 00:02:08,435 is make this level manager and instance. 50 00:02:08,434 --> 00:02:10,074 What is an instance? 51 00:02:10,070 --> 00:02:13,220 The instance will allow us to call upon 52 00:02:13,220 --> 00:02:16,310 this level manager wherever we are and use 53 00:02:16,310 --> 00:02:18,170 what ever valuable as 54 00:02:18,170 --> 00:02:20,290 public and whatever method is 55 00:02:20,285 --> 00:02:22,675 public available to us are created, 56 00:02:22,670 --> 00:02:24,610 make it an instance and then call it, 57 00:02:24,605 --> 00:02:26,995 and you will understand how that works. 58 00:02:26,990 --> 00:02:29,750 So what we can do is first of all, 59 00:02:29,750 --> 00:02:35,450 we're going to make a public static level manager 60 00:02:35,450 --> 00:02:37,480 of that means this variable will be 61 00:02:37,475 --> 00:02:41,135 off type level manager and call this instance. 62 00:02:41,135 --> 00:02:42,805 And then in start, 63 00:02:42,800 --> 00:02:48,670 we are going to set the instance equal to this saved. 64 00:02:48,665 --> 00:02:52,795 Okay, so what is happening right now? 65 00:02:52,790 --> 00:02:54,580 First of all, public, 66 00:02:54,575 --> 00:02:56,945 we know what public is static. 67 00:02:56,945 --> 00:02:58,675 What is static? 68 00:02:58,670 --> 00:03:01,910 Static means that through all of the code, 69 00:03:01,910 --> 00:03:04,120 we will have this the sink. 70 00:03:04,115 --> 00:03:08,095 So whether we call it from the player controller, 71 00:03:08,090 --> 00:03:09,710 from the bullet impact, 72 00:03:09,710 --> 00:03:11,830 from the room manager. 73 00:03:11,825 --> 00:03:14,965 The level manager instance is always 74 00:03:14,960 --> 00:03:17,990 the same throughout when we instantiate the book, 75 00:03:17,990 --> 00:03:21,070 for example, every single bullet is a clone. 76 00:03:21,065 --> 00:03:23,045 Do you remember? So if I run the game, 77 00:03:23,045 --> 00:03:24,755 let me just show you what I mean. 78 00:03:24,755 --> 00:03:27,505 So I shoot a couple of bullets, pause the game. 79 00:03:27,500 --> 00:03:30,190 You can see that each one of them is a clone. 80 00:03:30,185 --> 00:03:34,225 So if I try to access the player bullet controller, 81 00:03:34,220 --> 00:03:36,140 for example, if it's not static, 82 00:03:36,140 --> 00:03:38,180 some variable it will access, 83 00:03:38,180 --> 00:03:39,440 it will be different than, 84 00:03:39,440 --> 00:03:42,790 for example, a variable which is here or here. 85 00:03:42,785 --> 00:03:47,035 But if I create a static variable on the player bullet, 86 00:03:47,030 --> 00:03:50,510 then whichever bullet I access, 87 00:03:50,510 --> 00:03:52,430 the variable which is static, 88 00:03:52,430 --> 00:03:53,620 will be the same. 89 00:03:53,615 --> 00:03:57,695 So static means it's the same throughout all of the gain, 90 00:03:57,695 --> 00:04:00,715 wherever and whenever you access it. 91 00:04:00,710 --> 00:04:03,620 That is very important when it comes to a static. 92 00:04:03,620 --> 00:04:06,200 So it's of type level manager that's 93 00:04:06,200 --> 00:04:09,320 pretty easy to understand and its name is instance. 94 00:04:09,320 --> 00:04:10,760 We can call it whatever we want. 95 00:04:10,760 --> 00:04:12,190 We can call it Michael if you want, 96 00:04:12,185 --> 00:04:13,565 what will keep it as instance. 97 00:04:13,565 --> 00:04:17,485 And then we have this ironically pun intended and what? 98 00:04:17,480 --> 00:04:20,480 We have instance equal this. 99 00:04:20,480 --> 00:04:23,090 This means the actual class. 100 00:04:23,090 --> 00:04:24,320 So we are using 101 00:04:24,320 --> 00:04:26,560 the instance as soon as we start the game. 102 00:04:26,555 --> 00:04:28,985 Instance is this. 103 00:04:28,985 --> 00:04:31,645 So now wherever we are in the code, 104 00:04:31,640 --> 00:04:35,530 we can go ahead and write level manager dot instance, 105 00:04:35,525 --> 00:04:39,275 and access whichever variable which is public obviously, 106 00:04:39,275 --> 00:04:41,015 or method that we have in here. 107 00:04:41,015 --> 00:04:42,835 So next thing we're going to 108 00:04:42,830 --> 00:04:45,170 do is we'll remove the update for now. 109 00:04:45,170 --> 00:04:47,230 Use it will create it again. 110 00:04:47,225 --> 00:04:49,435 And we need to create something 111 00:04:49,430 --> 00:04:53,180 called a serialized field. 112 00:04:53,180 --> 00:04:58,630 Float. And it's going to be the time to load. 113 00:04:58,625 --> 00:05:01,705 So, and it's going to be equal to 2 f. 114 00:05:01,700 --> 00:05:04,030 Why do we create a font load? 115 00:05:04,025 --> 00:05:05,845 What is actually our goal? 116 00:05:05,845 --> 00:05:07,895 Out of all of this, I forgot to tell you. 117 00:05:07,895 --> 00:05:09,745 What we want to do is we want to 118 00:05:09,740 --> 00:05:12,910 delay the transition to the next level, 119 00:05:12,905 --> 00:05:15,545 so we don't want it to happen instantaneously. 120 00:05:15,545 --> 00:05:17,365 We want to have at least two seconds, 121 00:05:17,360 --> 00:05:18,730 so we get to the portal, 122 00:05:18,725 --> 00:05:20,005 we wait two seconds, and 123 00:05:20,000 --> 00:05:22,240 then we traveled on to the next level. 124 00:05:22,235 --> 00:05:25,295 This will just add a bit of us authenticity as you know, 125 00:05:25,295 --> 00:05:27,315 whenever you are playing a game, you don't. 126 00:05:27,315 --> 00:05:30,895 And to report and then immediately start the next level. 127 00:05:30,895 --> 00:05:32,415 You want to have a bit of time, 128 00:05:32,410 --> 00:05:34,590 two seconds maybe rethink your decision, 129 00:05:34,585 --> 00:05:36,435 but it will be over. 130 00:05:36,430 --> 00:05:38,410 And how are we going to do this? 131 00:05:38,410 --> 00:05:42,090 We'll obviously we are going to be using a coating. 132 00:05:42,085 --> 00:05:44,655 So I'm not going to tell you to create 133 00:05:44,650 --> 00:05:47,560 the quarantine right now because you'll need to do with, 134 00:05:47,560 --> 00:05:49,270 I think I do have a challenge 135 00:05:49,270 --> 00:05:51,370 somewhere where you create the coroutine. 136 00:05:51,370 --> 00:05:54,100 So pay attention very closely. 137 00:05:54,100 --> 00:05:55,330 I know called teens are 138 00:05:55,330 --> 00:05:57,490 very hard to learn in the beginning. 139 00:05:57,490 --> 00:06:00,360 Once you get the hang of it, it's extremely easy. 140 00:06:00,355 --> 00:06:02,295 Let's get started. First of all, 141 00:06:02,290 --> 00:06:03,820 because we will be accessing 142 00:06:03,820 --> 00:06:06,060 this co-routine from a different script. 143 00:06:06,055 --> 00:06:09,965 I'm going to write public eye enumerator. 144 00:06:09,960 --> 00:06:13,030 So the coroutine is of type I and numerator. 145 00:06:13,025 --> 00:06:21,485 And we're going to call it the loading next, next level. 146 00:06:21,550 --> 00:06:25,580 And in here we are going to be taking in an argument. 147 00:06:25,580 --> 00:06:28,160 So it's going to be of type string and it's going to be 148 00:06:28,160 --> 00:06:31,570 the next level, just like that. 149 00:06:31,565 --> 00:06:34,675 And in here what we'll do is we want to wait 150 00:06:34,670 --> 00:06:37,810 for the time to load and then load the scene. 151 00:06:37,805 --> 00:06:41,215 So as we said, yield, 152 00:06:41,210 --> 00:06:46,970 return, new, wait four seconds. 153 00:06:46,970 --> 00:06:48,710 And this wait four seconds, 154 00:06:48,710 --> 00:06:53,030 we are going to use the time to load. 155 00:06:53,030 --> 00:06:54,370 How great is that? 156 00:06:54,365 --> 00:06:57,025 And finally, after we wait 42 seconds, 157 00:06:57,020 --> 00:07:02,030 we are going to go into the scene manager. 158 00:07:02,030 --> 00:07:05,720 We add the scene management in 159 00:07:05,720 --> 00:07:09,200 here and now we can access the scene manager. 160 00:07:09,199 --> 00:07:11,529 So did you notice what happened right now? 161 00:07:11,525 --> 00:07:14,755 It didn't allow me to use the scene manager until I 162 00:07:14,750 --> 00:07:18,250 had the criteria telling unity that we are using this. 163 00:07:18,245 --> 00:07:21,395 So Scene Manager, not Unity, excuse me, 164 00:07:21,395 --> 00:07:23,165 the script right here, 165 00:07:23,165 --> 00:07:27,415 this entire file that we are using, seen management. 166 00:07:27,410 --> 00:07:30,520 So Scene Manager, dot load seen. 167 00:07:30,515 --> 00:07:34,595 And as the next scene that we are going to 0 or I mean, 168 00:07:34,595 --> 00:07:38,075 next level that we are going too low. Okay, great. 169 00:07:38,075 --> 00:07:39,985 Now the next thing that we need to do 170 00:07:39,980 --> 00:07:42,140 is we need to go into level exit. 171 00:07:42,140 --> 00:07:44,960 And instead of using the Scene Manager here, 172 00:07:44,960 --> 00:07:49,130 we simply use the instance to start the co-routine. 173 00:07:49,130 --> 00:07:51,980 And honestly, I'm already very tired, 174 00:07:51,980 --> 00:07:55,460 so I think it's better for you to do this instead of me. 175 00:07:55,460 --> 00:07:58,180 So go ahead, start the co-routine. 176 00:07:58,175 --> 00:08:00,755 First of all, from the level of exit script, 177 00:08:00,755 --> 00:08:05,695 Kali, call the level manager and move to the next level. 178 00:08:05,690 --> 00:08:09,350 There is a small trickier you'll need to watch out for. 179 00:08:09,350 --> 00:08:11,380 I'm going to give you a small hint, 180 00:08:11,375 --> 00:08:14,615 which is you can't simply call a co-routine. 181 00:08:14,615 --> 00:08:17,725 You need to start a quality. 182 00:08:17,720 --> 00:08:22,070 So pause the video right now and go start the co-routine. 183 00:08:22,070 --> 00:08:24,170 Oh, okay, welcome back. 184 00:08:24,170 --> 00:08:26,810 So how did you get on with that? 185 00:08:26,810 --> 00:08:29,570 And here I'm going to remove this. 186 00:08:29,570 --> 00:08:31,460 And instead I'm going to say that I'm 187 00:08:31,460 --> 00:08:33,860 going to start a co-routine. 188 00:08:33,860 --> 00:08:37,390 I'm going to use the level manager. 189 00:08:37,385 --> 00:08:40,255 I hope this was not the hardest part if you 190 00:08:40,250 --> 00:08:42,810 did manage to use instance, 191 00:08:42,814 --> 00:08:44,694 I congratulate you, you move 192 00:08:44,690 --> 00:08:46,600 to the next level of game development. 193 00:08:46,595 --> 00:08:48,265 If not, don't worry about it, 194 00:08:48,260 --> 00:08:50,270 it's probably my mistake 195 00:08:50,270 --> 00:08:52,870 because I didn't tell you I didn't give you the hint. 196 00:08:52,865 --> 00:08:56,995 But we are going to be loading next level. 197 00:08:56,990 --> 00:08:58,730 So this method in loading 198 00:08:58,730 --> 00:09:01,700 next level is actually an eye enumerator from 199 00:09:01,700 --> 00:09:03,560 the level manager and it 200 00:09:03,560 --> 00:09:06,850 requires a next level string right here, 201 00:09:06,845 --> 00:09:08,575 as you can see as an argument. 202 00:09:08,570 --> 00:09:10,580 So I'm going to give it to it. 203 00:09:10,580 --> 00:09:12,070 And what should it be? 204 00:09:12,065 --> 00:09:15,055 It should be the level two lot. 205 00:09:15,050 --> 00:09:17,630 Save that. And one very nice thing. 206 00:09:17,630 --> 00:09:20,680 You can see that when we stopped using the scene manager, 207 00:09:20,675 --> 00:09:23,315 the using Unity's engine 208 00:09:23,315 --> 00:09:26,465 is no longer as wide as the Unity engine alone. 209 00:09:26,465 --> 00:09:30,565 So the things that we don't use are a bit grayed out. 210 00:09:30,560 --> 00:09:32,930 So I can actually remove this, 211 00:09:32,930 --> 00:09:34,460 save a bit of memory. 212 00:09:34,460 --> 00:09:37,240 And now the level exit just allocates 213 00:09:37,235 --> 00:09:40,255 or calls the level manager the central head, 214 00:09:40,250 --> 00:09:42,430 and tells it to load the level. 215 00:09:42,425 --> 00:09:44,975 This will come in handy when we have multiple portals. 216 00:09:44,975 --> 00:09:46,265 You'll see, trust me, 217 00:09:46,265 --> 00:09:48,865 it's much better to do it this way. 218 00:09:48,860 --> 00:09:50,140 So save that. 219 00:09:50,135 --> 00:09:53,335 Go back and to our game right here. 220 00:09:53,330 --> 00:09:56,330 Start the game, walked towards the portal. 221 00:09:56,329 --> 00:09:57,619 I'm playing in the scene mode. 222 00:09:57,620 --> 00:09:59,360 So now when I hit the portal, 223 00:09:59,360 --> 00:10:01,880 we should have two seconds before we vote. 224 00:10:01,880 --> 00:10:03,500 And we can see it right here in 225 00:10:03,500 --> 00:10:05,330 London manager time to load two seconds. 226 00:10:05,330 --> 00:10:07,390 So there we go. Here goes nothing. 227 00:10:07,385 --> 00:10:10,985 112 up. 228 00:10:10,985 --> 00:10:11,575 There we go. 229 00:10:11,570 --> 00:10:14,000 So now we are in the level 1 230 00:10:14,000 --> 00:10:16,810 and we didn't go to there immediately. 231 00:10:16,805 --> 00:10:18,295 So I hope you enjoy it. 232 00:10:18,290 --> 00:10:21,010 Make sure to state and all of your changes. 233 00:10:21,005 --> 00:10:23,395 And in the next video we are going to make 234 00:10:23,390 --> 00:10:25,870 the transitions even cooler. 235 00:10:25,865 --> 00:10:28,105 Can you imagine that even cooler than this? 236 00:10:28,100 --> 00:10:30,900 Make sure to leave a review for the cool transitions. 237 00:10:30,904 --> 00:10:32,494 I'll see you then.