WEBVTT 00:00.000 --> 00:00.450 Hello guys. 00:00.450 --> 00:01.410 Welcome to the video. 00:01.410 --> 00:04.770 In this one we have to do a couple of more changes to the player manager. 00:04.770 --> 00:08.730 And I want to make on player join functionality. 00:08.730 --> 00:14.370 As of now when we join the player he just chooses the position and somehow it is placed at the starting 00:14.370 --> 00:15.720 point where it's supposed to be. 00:15.720 --> 00:21.150 But we may move the start point, or we may update the checkpoint position and then we need to be sure 00:21.150 --> 00:24.240 player is created at the position we want it to be. 00:24.840 --> 00:29.940 Also, we need to have skins for each player and also which is most important. 00:29.940 --> 00:34.290 We need to remember which player uses which device, right? 00:35.560 --> 00:40.780 And before we do all of that, I want to be able to kill the player just to check some functionality. 00:40.810 --> 00:45.730 So we need to do a bit of a change that we're going to upgrade later on. 00:46.060 --> 00:48.820 As of now, we need to go to the player script. 00:49.960 --> 00:54.340 And over here we have this functionality where we restart the game. 00:54.340 --> 00:55.570 That's not what I want to do. 00:55.570 --> 01:00.790 I want to comment this out and I want to comment this out here as well. 01:00.880 --> 01:03.550 I think we are starting the game from somewhere else. 01:03.550 --> 01:06.820 So I want to double check that by going to Game Manager. 01:09.400 --> 01:12.400 Let me find this restart game method. 01:15.560 --> 01:16.190 Where is it? 01:16.190 --> 01:17.300 Restart level. 01:17.300 --> 01:19.100 It has zero references. 01:19.100 --> 01:19.490 Okay. 01:19.490 --> 01:21.140 It is not used anywhere for now. 01:21.140 --> 01:21.830 Very good. 01:21.830 --> 01:23.060 So now the player dies. 01:23.060 --> 01:24.530 We don't need to restart the game. 01:24.530 --> 01:28.550 Also, I want player to die no matter how many fruits he has. 01:28.550 --> 01:33.110 So I'm going to go to prefab of a player and I'm going to choose difficulty hard. 01:33.110 --> 01:39.200 And on the managers over here on difficulty manager, I'm going to choose hard difficulty as well just 01:39.200 --> 01:39.950 in case. 01:40.280 --> 01:41.300 Very nice. 01:41.300 --> 01:44.450 Now let's go to Player Manager script. 01:45.290 --> 01:47.210 We need to do a couple of changes here. 01:47.900 --> 01:53.300 Uh, first of all, we want to know when player joined the game so we can give it some default variables, 01:53.300 --> 01:55.610 change some maybe position or anything else. 01:55.610 --> 01:57.320 Let me do close all by this. 01:57.440 --> 02:02.210 We can achieve that by, uh, getting component of a player input manager. 02:02.210 --> 02:07.430 And then there is a possibility to subscribe to the event of player joining the game. 02:07.460 --> 02:10.670 Uh, let's go here and let's maybe let's do it above. 02:11.540 --> 02:18.110 I'm going to do public, uh, player input manager, player input manager. 02:18.110 --> 02:23.000 And I'm going to do get private set because we're going to need it in the future from another script. 02:23.210 --> 02:29.450 Now on their wake, let's do player input manager equals to get component of player input manager. 02:29.780 --> 02:31.010 Very nice. 02:31.040 --> 02:33.410 Now we need on enable method. 02:34.430 --> 02:40.820 I'm going to do on enable, and I'm going to do on disable and inside of on enable method we can do 02:40.820 --> 02:47.360 this player input manager on player joined plus equals. 02:47.360 --> 02:50.210 And now we can type name of a method that we want to have. 02:50.240 --> 02:52.820 For example add player. 02:52.820 --> 02:55.040 And then we can uh sorry like that. 02:55.040 --> 02:58.430 And then we can press alt enter or maybe just mouse button. 02:58.430 --> 03:03.050 Quick actions and refactoring generate method add player. 03:03.050 --> 03:06.530 So now this method will be called every time player joins the game. 03:06.530 --> 03:11.210 And also it will have information about the input that were used to join the game. 03:11.210 --> 03:16.160 We can get access to the uh input component to the player component. 03:16.160 --> 03:18.980 Everything can be done through this variable over here. 03:18.980 --> 03:20.870 Let's rename it to player. 03:21.170 --> 03:21.980 Sorry. 03:24.040 --> 03:25.990 And let's move this method below. 03:25.990 --> 03:26.890 Over here. 03:27.490 --> 03:28.840 So it's pretty. 03:28.840 --> 03:30.910 Maybe even here like that. 03:30.910 --> 03:31.570 Okay. 03:32.320 --> 03:33.700 Then on disable. 03:33.700 --> 03:35.470 We want to unsubscribe from this event. 03:35.470 --> 03:37.090 So I'm going to duplicate this. 03:37.090 --> 03:39.850 Cut it out paste it in here and do minus. 03:40.670 --> 03:41.570 Like that. 03:41.780 --> 03:42.800 Very good. 03:42.830 --> 03:43.850 I like it. 03:43.880 --> 03:49.340 So now we have method that is called on player joined which basically is a respawn method. 03:49.340 --> 03:55.010 Now that we have it let's take this on player respawn and walk and place it inside of this method. 03:55.010 --> 03:57.830 And this will update the reference to the player. 03:57.830 --> 04:02.270 However, it is not working perfectly because now we're going to have a bunch of players, not just 04:02.270 --> 04:02.690 one. 04:02.690 --> 04:04.670 And if you remember enemy. 04:06.730 --> 04:07.600 There is the enemy. 04:07.600 --> 04:09.190 Enemy over here. 04:10.790 --> 04:16.100 Just updates transform of a first player in the player manager. 04:16.100 --> 04:17.540 Let's not touch it for now. 04:17.540 --> 04:19.040 Let it just do its job. 04:19.040 --> 04:19.730 It's fine. 04:19.730 --> 04:22.940 Let's just go ahead here and maybe you know what? 04:22.940 --> 04:25.040 Maybe, just in case, I'll do this. 04:25.040 --> 04:30.080 If player is equals to null, then player. 04:31.720 --> 04:31.900 Right. 04:31.900 --> 04:37.660 We need to check this this player because we have player variable over here. 04:38.890 --> 04:45.940 So if this player is equals to null, then this player equals to player getcomponent of a player. 04:46.150 --> 04:47.380 This is a placeholder. 04:47.380 --> 04:51.310 I'm going to remove it later on, but for now we just need it so we don't see any errors. 04:51.310 --> 04:51.940 Okay. 04:52.360 --> 04:53.080 Uh very nice. 04:53.080 --> 04:54.430 Let me place it like that. 04:55.300 --> 04:57.970 And we can forget about this now what we want to have. 04:57.970 --> 05:04.090 We want to update the respawn position when player is added, and then we want to place him at respawn 05:04.090 --> 05:04.810 position. 05:06.960 --> 05:10.020 So first of all, I want to take this. 05:10.020 --> 05:11.610 I want to extract method. 05:13.790 --> 05:15.860 Place player. 05:17.010 --> 05:23.370 Place new player at respawn point and this one will require a transform. 05:23.370 --> 05:26.370 So I'm going to pass transform new player. 05:27.240 --> 05:28.950 Then we can remove it from the start. 05:28.950 --> 05:31.530 We're not going to need it in the start. 05:32.810 --> 05:34.160 Then over here. 05:34.160 --> 05:38.120 You remember we just double checking if we have respawn points so we can keep it. 05:38.120 --> 05:45.020 And after that we're going to do new player dot position equals to respawn point dot position just like 05:45.020 --> 05:45.620 that. 05:45.620 --> 05:53.870 And then we can just go ahead over here and do place new player at respawn point. 05:53.870 --> 05:55.910 And we just need to pass it a transform. 05:55.910 --> 05:59.240 And I'm going to pass player transform like that. 06:00.540 --> 06:06.840 Okay, just to clarify things, when we created a player, uh, on player joined, this method will 06:06.840 --> 06:07.350 be called. 06:07.350 --> 06:11.610 And it will have information about player input component on a player game object. 06:13.000 --> 06:16.390 Which is, uh, right here. 06:17.410 --> 06:22.660 And through this component we can get access to any other component on the player game object. 06:22.660 --> 06:24.580 That's why we're doing it this way. 06:25.060 --> 06:27.550 We're not going to change this method in the nearest future. 06:27.550 --> 06:32.260 So I'm going to cut this out from here and place it somewhere below because we can forget about it for 06:32.260 --> 06:32.680 now. 06:33.590 --> 06:37.460 Okay, let's go ahead and just make sure it's all working. 06:37.490 --> 06:39.140 So I'm going to place it here. 06:39.140 --> 06:42.350 And also by the way we don't need this start method anymore. 06:42.350 --> 06:45.470 So I can just clean this like that. 06:48.340 --> 06:48.940 Okay. 06:48.940 --> 06:49.660 Okay, okay. 06:49.660 --> 06:50.650 Very good. 06:52.690 --> 06:55.420 I'm going to show you a wing, just in case if you want to see this. 06:55.570 --> 06:57.250 This is how it looks right now. 06:57.760 --> 07:00.040 And let's go back to unity. 07:00.850 --> 07:05.050 I'm going to keep first player in the game for now, but later on we're going to just join both of the 07:05.050 --> 07:05.800 players. 07:07.820 --> 07:11.240 Okay, so I'm going to use my gamepad to join the game and I'm there. 07:11.240 --> 07:13.040 I don't see any errors. 07:13.040 --> 07:16.130 Let me heal the player from a gamepad. 07:16.730 --> 07:17.150 Done. 07:17.150 --> 07:20.360 And let me change respawn point. 07:21.400 --> 07:23.950 Let's say we have a checkpoint in the game. 07:24.100 --> 07:24.880 Prefab. 07:25.030 --> 07:26.890 Uh, where is it? 07:28.190 --> 07:29.090 Checkpoint. 07:29.390 --> 07:30.650 I don't see anything. 07:33.040 --> 07:35.110 Let's say checkpoint is, um. 07:36.540 --> 07:37.560 It was updated. 07:37.560 --> 07:38.100 Oh, my. 07:38.460 --> 07:39.150 Wait a second. 07:39.150 --> 07:45.060 Let's say checkpoint is over here, and first player from a keyboard jumped to that point to activate 07:45.060 --> 07:46.200 the checkpoint. 07:46.230 --> 07:49.500 Now it's supposed to be updated on the player manager. 07:49.500 --> 07:50.430 Over here it is. 07:50.430 --> 07:51.120 Checkpoint. 07:51.120 --> 07:53.760 And I'm going to use GamePad to create a new player. 07:53.760 --> 07:57.720 And I'm at checkpoint so it works okay. 07:58.140 --> 07:59.070 Very nice. 07:59.070 --> 07:59.790 Love it. 08:00.660 --> 08:03.930 What other things we want to do on player join? 08:03.960 --> 08:10.650 Well, we want to keep track of players that are in the game, so probably it is a good idea to add 08:10.650 --> 08:12.030 a list of players. 08:13.310 --> 08:14.510 Uh, let's make it this way. 08:14.510 --> 08:15.950 Let's do serialize field. 08:15.980 --> 08:17.450 Try what player? 08:17.450 --> 08:20.780 Actually, we're going to do list of player. 08:22.070 --> 08:23.990 It should be as serialized field. 08:25.380 --> 08:27.540 And I'm going to name it as Player list. 08:27.930 --> 08:31.140 And let's make it equals to new list of players by default. 08:31.140 --> 08:32.040 All right. 08:32.520 --> 08:32.940 Um. 08:33.830 --> 08:38.570 I don't remember if we used the list before in this course, but it's pretty simple to understand. 08:38.570 --> 08:43.040 It's just like an array, but the difference is that you can change list dynamically. 08:43.040 --> 08:48.770 You can change content of the list in the script while you playing the game at runtime, and you cannot 08:48.770 --> 08:51.440 do that with an array, but with a list it is possible. 08:51.440 --> 08:52.520 So now. 08:53.380 --> 08:56.020 We can go to add Player method. 08:56.020 --> 08:59.170 And over here we can get component of a player script. 08:59.170 --> 09:00.430 I'm going to do player. 09:02.840 --> 09:03.260 Um. 09:03.260 --> 09:04.190 Player. 09:04.670 --> 09:05.360 Let's do. 09:05.360 --> 09:06.200 Player. 09:06.990 --> 09:08.310 Player script. 09:08.340 --> 09:09.690 Equals to player. 09:09.720 --> 09:11.760 Get component of a player. 09:12.410 --> 09:13.700 And just like that. 09:15.290 --> 09:18.110 And then we're going to do player list. 09:19.010 --> 09:19.820 And. 09:20.470 --> 09:21.790 Player script. 09:22.150 --> 09:22.630 All right. 09:22.630 --> 09:26.050 So now we're going to have reference to the player script in the player list. 09:26.050 --> 09:31.570 And later on if we need to get one of the players from player manager from enemy or any other place, 09:31.570 --> 09:35.230 maybe camera that can be done through this variable. 09:35.230 --> 09:43.150 So I think since we do need this way, it would be a good idea to go here and make it as a get private 09:43.150 --> 09:43.810 set. 09:44.200 --> 09:51.310 So I'm going to do over here, get private set like that might look a bit confusing, but it's very 09:51.310 --> 09:51.580 simple. 09:51.580 --> 09:56.740 We just combined everything that we did before we made it public with a public getter, private setter. 09:56.740 --> 09:59.440 So it can be changed only inside the player manager. 09:59.440 --> 10:04.540 Then we make it a serialized field so it is visible in the inspector, and also we made it equals to 10:04.540 --> 10:05.080 the new list. 10:05.080 --> 10:08.260 So it has a list every time we start the game. 10:09.230 --> 10:11.090 Because we need to initialize the list. 10:11.510 --> 10:12.770 Uh, that's what we need to do. 10:12.800 --> 10:14.180 Okay, okay. 10:15.410 --> 10:21.110 Now let's go and make on player disconnected or on player removed method. 10:21.110 --> 10:24.770 Because when player getting killed we need to remove him from the list. 10:24.770 --> 10:28.070 So I'm going to go here and make player input manager. 10:28.910 --> 10:34.400 On player left plus equals remove player. 10:36.250 --> 10:38.320 Let's generate method as well. 10:38.560 --> 10:40.390 I'm going to take this method. 10:40.930 --> 10:42.850 Place it over here. 10:43.360 --> 10:44.380 Very nice. 10:45.040 --> 10:45.940 Before I forgot. 10:45.940 --> 10:47.950 Let's copy this line of code. 10:47.950 --> 10:49.180 Paste it in here. 10:49.180 --> 10:51.430 Let's do minus here. 10:51.430 --> 10:55.420 And then we can go to Remove player and do something very simple. 10:56.630 --> 10:58.310 Whereas this should be named as player. 10:58.310 --> 11:06.020 And then we're going to do player uh, with the name of player script equals to player Getcomponent 11:06.020 --> 11:07.550 of a player script. 11:08.450 --> 11:10.610 Sorry, we don't need script here, just player. 11:10.610 --> 11:14.090 And then we're going to do player list, remove player script. 11:14.090 --> 11:17.270 So we're going to take it away from the list okay. 11:17.270 --> 11:19.070 Let's go and double check that. 11:20.400 --> 11:21.510 Let's go now. 11:26.240 --> 11:30.770 Uh, I don't see the list, but I made it a serialized field, man. 11:31.580 --> 11:34.610 Uh, should be should be visible. 11:35.980 --> 11:36.520 You know what? 11:36.520 --> 11:37.300 Let's just. 11:38.430 --> 11:40.140 Not over complicated. 11:40.140 --> 11:41.220 I'm sorry guys. 11:43.360 --> 11:48.100 Let's make it as private without this. 11:49.100 --> 11:52.700 And then to get the list, I'm going to make a public method once I need it. 11:52.700 --> 11:57.320 If I need this list from another script, I'm just going to make a method that would return me this 11:57.320 --> 11:58.130 variable. 11:58.670 --> 12:00.470 Okay, let's go back now. 12:02.150 --> 12:05.120 Now we have player list over here that is empty. 12:05.150 --> 12:10.910 We can go to play mode, and this default player will not be in the list because it was there from the 12:10.910 --> 12:12.860 start of the game, but I'm going to kill it. 12:13.400 --> 12:16.910 Okay, now let me join the new player to the game. 12:17.360 --> 12:22.790 There is a player with a keyboard and there is this player clone over here. 12:22.820 --> 12:29.270 Now I'm going to join another one and there is another player in the list and we can keep track of them. 12:29.270 --> 12:32.330 There is also a couple of errors over here in the console. 12:32.330 --> 12:33.110 You can see. 12:33.110 --> 12:35.000 Let's just ignore them for now. 12:35.000 --> 12:39.710 Uh, they're not so important and they're not, you know, interrupting us from the development. 12:39.710 --> 12:42.200 If we have them in the end of the section, I'm going to fix them. 12:42.200 --> 12:45.530 But in my prototype, they just fixed themselves during the development. 12:45.530 --> 12:48.140 So we have no reason to be worried about this right now. 12:48.350 --> 12:50.120 Now, let's take care of something else. 12:50.120 --> 12:51.650 Something very important. 12:51.650 --> 12:57.830 As of now, we can join unlimited number amount of players to the game and we need to limit that. 12:58.040 --> 13:03.500 Uh, this player input manager has a variable that says limit number of players. 13:03.500 --> 13:05.810 If you make it true, you can set the number. 13:05.810 --> 13:09.050 Max player count can be one, two, three or whatever you like. 13:09.630 --> 13:13.650 The problem is that this variable is read only. 13:13.650 --> 13:15.900 You cannot change it in the script. 13:16.780 --> 13:19.420 You can go here and you can go player input. 13:19.420 --> 13:23.110 Manager max player count equals to one. 13:23.110 --> 13:27.340 And you can see it does not work because it will tell you that it is not accessible. 13:27.340 --> 13:28.510 It is read only. 13:28.660 --> 13:29.020 Yeah. 13:29.020 --> 13:33.640 So we'll have to interfere into the script a little bit. 13:33.970 --> 13:36.310 Let's go over here. 13:36.310 --> 13:39.310 Let's click Edit Script. 13:40.550 --> 13:42.290 And this is unity script. 13:42.290 --> 13:45.740 This is what makes player Input manager work. 13:46.040 --> 13:49.550 We're not going to just, you know, we're not going to look at the script. 13:49.550 --> 13:51.620 It doesn't really matter what is written here. 13:51.620 --> 13:55.100 We just need to do one simple adjustment. 13:55.520 --> 13:59.450 I'm going to look for max player count variable. 13:59.450 --> 14:01.100 And you can see there is this. 14:02.270 --> 14:03.110 To me. 14:03.110 --> 14:08.870 Yeah, there is this public integer max player count that we can use to read the value, and it returns 14:08.870 --> 14:12.500 us the max player count, which is private variable. 14:12.710 --> 14:14.000 It may be confusing. 14:14.000 --> 14:14.780 Don't worry about that. 14:14.780 --> 14:15.620 It doesn't matter. 14:15.620 --> 14:18.620 We just need to make a method that will change this variable. 14:18.620 --> 14:22.160 That's it and we need it many times in our custom scripts. 14:22.160 --> 14:31.040 So let's go just somewhere here and let's do public void set maximum. 14:33.080 --> 14:35.000 Layer count. 14:35.060 --> 14:38.750 And we're going to pass int maximum player count. 14:38.750 --> 14:40.640 And it's going to do something very simple. 14:40.640 --> 14:48.260 It's going to do m player count m max player count equals to maximum player count just like that. 14:48.560 --> 14:49.670 Now we're going to save this. 14:49.700 --> 14:51.290 We can close this script. 14:52.740 --> 14:57.540 And then in the player input manager over here, we can do player input manager. 14:58.410 --> 15:00.330 Set maximum player count. 15:00.330 --> 15:04.560 So now we can use this method that we just created to set up a player account. 15:04.590 --> 15:05.910 Why do we need a method. 15:06.000 --> 15:08.190 Actually why do we want to have it right. 15:08.190 --> 15:09.990 We can just change it in the inspector. 15:10.680 --> 15:12.060 Actually we cannot. 15:12.060 --> 15:15.420 Later on in the main menu we're going to have the. 15:16.700 --> 15:20.600 And the buttons that will define how many players will be there in the game. 15:20.600 --> 15:24.770 And as you know, if you want to do something from a button on the UI, you probably should have a method 15:24.770 --> 15:29.810 because you cannot just go from a button to the inspector over here and change value over here. 15:29.840 --> 15:30.770 That's the issue. 15:30.770 --> 15:32.900 So let's enable this. 15:32.900 --> 15:36.110 Let's set max player count to four by default. 15:36.110 --> 15:38.510 And then later on we're going to change it if we want to. 15:38.510 --> 15:42.980 As of now let's just make sure it's working by doing something very simple. 15:42.980 --> 15:47.450 Over here I'm going to do public int max player count. 15:47.450 --> 15:49.760 I'm going to make it equals to one by default. 15:50.480 --> 15:54.200 And then in the week I'm going to do player input manager. 15:54.810 --> 15:58.440 Set maximum player count to max player count again. 15:58.440 --> 16:03.120 Later on, we're going to call this method from a button, but as of now this will just do fine because 16:03.120 --> 16:05.130 we need to make sure it's working. 16:05.220 --> 16:05.850 Okay. 16:05.850 --> 16:06.810 Let's go back. 16:06.810 --> 16:13.020 I'm going to delete this player from here because I want to be able to join the player from the start. 16:13.020 --> 16:15.870 Let's select player manager and let's go to play mode. 16:17.680 --> 16:20.050 So no players. 16:20.050 --> 16:21.730 Maximum player count one is here. 16:21.730 --> 16:24.280 And also it did change variable over here. 16:24.280 --> 16:25.600 So we are fine. 16:25.600 --> 16:27.310 Now I'm going to join the player. 16:27.640 --> 16:28.690 There is one. 16:32.100 --> 16:36.120 And you can see a message that says maximum number of supported players reached one. 16:36.120 --> 16:39.060 If I try to join another one, I cannot. 16:39.390 --> 16:43.140 However, this message may be irritating in the future. 16:43.140 --> 16:44.760 I don't want to see it every time. 16:44.760 --> 16:49.740 So I'm going to go ahead to this message and I'm going to comment out this line of code. 16:49.740 --> 16:51.180 If you want to uncomment this. 16:51.180 --> 16:52.410 It is very easy to find. 16:52.410 --> 16:55.920 It is just very close to the method we created before over here. 16:56.370 --> 16:57.000 Okay. 16:58.330 --> 16:59.170 Good. 16:59.590 --> 17:01.090 Uh, let's save this. 17:01.090 --> 17:02.710 Let's go back to unity. 17:02.710 --> 17:05.020 And now player will not be joining. 17:05.440 --> 17:08.890 If you have set the limit, there's the first player. 17:08.890 --> 17:09.820 It's all fine. 17:09.820 --> 17:12.880 If you click buttons on a keyboard, it doesn't work. 17:12.880 --> 17:16.000 And now we can set the number to bigger value if you want to. 17:16.060 --> 17:19.150 And that is what we're going to do from the UI later on. 17:19.150 --> 17:20.800 As of now, this is just fine. 17:20.800 --> 17:25.870 There are other things we need to do with the player manager, but it may take more than a couple of 17:25.870 --> 17:30.760 minutes, so I think it's better to do it in the next video and I'll see you there.