WEBVTT 00:00.000 --> 00:00.420 Hello guys. 00:00.420 --> 00:01.230 Welcome to the video. 00:01.230 --> 00:04.590 In this section I want to show you how to make local multiplayer. 00:04.590 --> 00:10.230 We're going to make a co-op player mode where two players can play together, and the system works in 00:10.230 --> 00:13.110 a way that if you want, you can make more players. 00:13.110 --> 00:16.410 3 or 4 is fine as long as you have input devices. 00:16.410 --> 00:21.690 As for me, I'm going to use keyboard and gamepad to make the system and to check everything, as I 00:21.690 --> 00:26.640 assume that most of the people who are doing this course are going to have keyboard and one gamepad. 00:26.670 --> 00:29.100 All right, now let me show you what we're going to do here. 00:29.100 --> 00:32.490 I'm going to take my prototype project and enter the play mode. 00:32.490 --> 00:35.010 And I'm going to use gamepad so we can go to new game. 00:35.010 --> 00:39.990 We can choose how many players is going to play, for example two on a normal difficulty. 00:39.990 --> 00:42.420 Now first player is supposed to select the skin. 00:42.420 --> 00:47.400 Let's say first player is a pink man and second player can be a ninja frog. 00:47.400 --> 00:48.720 We're going to click select. 00:48.720 --> 00:50.430 Then we need to select level. 00:51.550 --> 00:56.410 Now over here, we need to display some kind of message that would say press button to join. 00:56.410 --> 00:58.750 And we're going to do that in the end of the section. 00:58.750 --> 01:00.580 Then we're going to press join button. 01:00.580 --> 01:02.680 And there is a player that you can control. 01:02.680 --> 01:07.210 And also you can press any key on the keyboard as a second player to join the game. 01:07.420 --> 01:08.770 And this is what we're going to do. 01:08.770 --> 01:11.410 And both of them are controlled by different devices. 01:11.410 --> 01:17.800 And also, uh, the system we made will remember which player has which skin and controlling device. 01:17.800 --> 01:20.320 So every time player presses input from a gamepad. 01:20.470 --> 01:25.690 So every time player presses input from a gamepad, he's going to have character that he chose, even 01:25.690 --> 01:26.800 if both of them dead. 01:26.800 --> 01:28.480 And now there is no one. 01:28.480 --> 01:31.060 And player from the keyboard will do the input. 01:31.060 --> 01:32.500 Who's supposed to be the second player? 01:32.500 --> 01:34.360 He will be the second player. 01:34.540 --> 01:37.660 All right, so that's the system we're going to make in this section. 01:37.660 --> 01:38.980 And it's going to be a lot. 01:38.980 --> 01:39.760 To be honest. 01:39.760 --> 01:42.700 Till yesterday I was thinking there's going to be very easy. 01:42.700 --> 01:45.010 You just make a couple of prefabs and make it work. 01:45.010 --> 01:49.630 But I learned from experience that I actually have to set up entire system for this, and it took me 01:49.630 --> 01:51.850 maybe 3 or 4 hours to come up with this. 01:51.850 --> 01:53.860 So I hope you will like it. 01:53.860 --> 01:55.450 All right, let's begin. 01:55.510 --> 01:59.710 Uh, first of all, we need to adjust the way how player manager works. 01:59.710 --> 02:04.180 As of now, we have sort of custom player manager that respawns the player. 02:04.690 --> 02:09.670 Uh, let me go to prefabs and take the player manager over here. 02:10.550 --> 02:13.130 So this is the custom player manager we have. 02:13.370 --> 02:20.510 But if you want to have a local multiplayer, it will be easier to use Player Input Manager from unity, 02:20.510 --> 02:26.420 because that one can automatically assign control and devices to the character it creates. 02:26.450 --> 02:31.400 So that's why we need to go here and add component of a player input manager. 02:31.430 --> 02:36.260 Now thanks to this component, unity now can listen to the devices that were used. 02:36.260 --> 02:39.680 And if someone pressed the join button, it's going to make a new player. 02:39.680 --> 02:40.340 For us. 02:40.340 --> 02:44.180 That means we don't need to use prefab on a player manager anymore. 02:44.180 --> 02:47.000 So let's go ahead and clean this up a little bit. 02:48.990 --> 02:54.090 So over here, uh, let's take these, uh, line of code. 02:54.090 --> 02:55.650 I just need it in the future. 02:55.650 --> 02:59.310 So I'm gonna paste it in here and comment this out. 03:00.580 --> 03:05.380 And these two methods can be removed for now because we're going to use different system later on. 03:05.380 --> 03:08.500 So let's just delete these two methods okay. 03:08.500 --> 03:10.750 Now let's go all the way above. 03:10.750 --> 03:17.050 And let's remove player prefab and respawn delay because again we're not going to use them. 03:18.240 --> 03:23.670 I'm going to save the script, and there may be a couple of errors in unity that we need to fix real 03:23.670 --> 03:24.300 quick. 03:25.230 --> 03:29.490 Yeah, there is one on a dead zone that tries to respawn the player. 03:29.490 --> 03:30.750 Let's remove it. 03:32.450 --> 03:34.370 And let's see what else is there. 03:38.020 --> 03:39.730 Um, there is this one. 03:40.500 --> 03:41.940 Action on player respawn. 03:41.940 --> 03:45.510 I guess it says that action is not being invoked anywhere. 03:45.510 --> 03:47.070 Yeah, it's never used. 03:47.100 --> 03:47.970 Okay. 03:48.000 --> 03:48.480 Um. 03:49.770 --> 03:54.240 We're going to use it a bit later on, but for now, let's just use it at the start method so it does 03:54.240 --> 03:55.830 not give us an error message. 03:55.830 --> 03:56.430 All right. 03:56.670 --> 03:57.450 Cool. 03:57.450 --> 04:03.300 So now we don't have a prefab on our player manager, but we need to create player somehow. 04:03.300 --> 04:06.630 Well we're going to do that with the help of player input manager. 04:06.630 --> 04:13.860 First of all let's change send message to invoke events because we're going to need to check when player 04:13.860 --> 04:19.200 joined the game so we can add some functionality like update skin of the player or update the position 04:19.200 --> 04:19.830 of the player. 04:19.830 --> 04:27.540 Then there is a join behavior and I want to have join action is triggered as a join behavior. 04:27.540 --> 04:28.740 That's what I want to do. 04:29.620 --> 04:35.590 So first we need to go and make the action on the, uh, input action editor. 04:36.100 --> 04:37.150 Over here. 04:37.150 --> 04:40.750 Let's delete the post action. 04:40.840 --> 04:42.610 Actually, we can just use it. 04:42.670 --> 04:47.650 Let's rename this from post to join. 04:48.620 --> 04:51.710 I think I did delete this in the like in one of the videos. 04:51.710 --> 04:52.070 Why? 04:52.070 --> 04:53.510 It's why is it here? 04:53.960 --> 04:55.070 This is so weird. 04:55.070 --> 04:57.230 Okay, I'm going to just delete it in case you don't have it. 04:57.230 --> 04:59.510 And I'm going to show you how to make it from the start. 04:59.510 --> 05:03.860 We're going to click plus over here and we're going to name it as uh join. 05:04.720 --> 05:05.290 Game. 05:05.290 --> 05:05.890 Maybe. 05:07.040 --> 05:13.730 All right then, over here, we need to choose a device that we want to use for joining and also a button. 05:13.880 --> 05:19.370 As for keyboard, let's just find keyboard and find any key. 05:19.370 --> 05:21.830 Or if you want you can use enter key. 05:22.460 --> 05:24.380 Yeah, but I'll use any key. 05:25.890 --> 05:26.970 Any key. 05:27.180 --> 05:27.930 Okay. 05:28.840 --> 05:30.280 You also need another button. 05:30.280 --> 05:35.770 Let's add binding and let's do a gamepad. 05:35.770 --> 05:37.960 I'm going to type start over here. 05:37.960 --> 05:39.430 Start on a gamepad. 05:39.790 --> 05:40.180 Also. 05:40.180 --> 05:45.280 Now we're using start button to pause the game from a gamepad on a UI over here. 05:45.280 --> 05:49.840 And it will pause the game and it will join the player at the same time. 05:49.840 --> 05:55.150 We're going to take care of this later on, but as of now, let's just fix it in a very simple way. 05:55.150 --> 06:02.470 Let's change pause button from start to something else like select for example, select button on a 06:02.470 --> 06:03.190 gamepad. 06:07.260 --> 06:08.970 So it will not interfere. 06:08.970 --> 06:10.860 Let's save the asset. 06:17.090 --> 06:24.410 Now we can, uh, go over here to join behavior, and we're going to change it to join player when join 06:24.410 --> 06:25.730 action is triggered. 06:26.970 --> 06:28.890 And then we need to choose the action. 06:28.890 --> 06:30.780 We're going to click Use Reference. 06:30.780 --> 06:35.790 Then we need to click this dot over here and find this join game action. 06:37.600 --> 06:38.680 This is the one. 06:39.070 --> 06:40.900 Okay, I'm going to choose it. 06:40.900 --> 06:41.920 This is nice. 06:41.920 --> 06:47.080 Now this player input manager want to have a prefab so it knows what the player is. 06:47.530 --> 06:48.970 Uh, we're going to go to. 06:50.160 --> 06:52.200 Asset prefab folders. 06:52.200 --> 06:56.610 There is a player and we're going to drag this over here to the prefab field. 06:56.640 --> 07:00.960 Now this is supposed to work as it is right now, but it will not. 07:00.960 --> 07:02.100 Uh, let's just try it. 07:02.100 --> 07:04.260 Let's see what it's going to show us. 07:04.260 --> 07:06.000 And I want you to know about this. 07:06.000 --> 07:09.210 I'm going to use my gamepad, and I'm going to press the start button. 07:09.210 --> 07:11.100 And you can see we have a message. 07:11.100 --> 07:15.390 The game object does not have a player input component on it. 07:16.400 --> 07:23.090 Because of that player input manager cannot recognize this player prefab as a player, and that's what 07:23.090 --> 07:24.500 we need to fix right now. 07:26.960 --> 07:29.330 Um, let's go to player prefab. 07:29.330 --> 07:35.870 Actually, we have it over here and we need to go ahead and add. 07:36.770 --> 07:38.660 Player input component. 07:39.250 --> 07:45.160 Now, later on, we're going to need to use this player input component to assign actions. 07:45.160 --> 07:48.460 So two player is going to be controlled by two different devices. 07:48.460 --> 07:51.850 So we're going to need to type get component of a player input. 07:51.850 --> 07:57.160 But I was smart enough to and that is a sarcastic comment. 07:57.160 --> 08:00.160 That was a very uh bad decision. 08:00.160 --> 08:03.550 I named player input as player input. 08:04.790 --> 08:06.830 As well as the script player input. 08:06.830 --> 08:13.400 And now if you try to get a component of a player input over here, it might search for this script 08:13.400 --> 08:16.700 of a player input because it has the very same name. 08:16.700 --> 08:18.800 The solution here is very simple. 08:18.800 --> 08:21.200 First of all, let's take this player input. 08:21.200 --> 08:23.480 Let's rename it to Player Input set. 08:25.210 --> 08:26.080 Oh, no. 08:26.080 --> 08:27.880 It created another script. 08:27.880 --> 08:28.390 It's okay. 08:28.390 --> 08:29.980 I'm going to delete it from here. 08:31.320 --> 08:32.460 Let me delete it. 08:34.670 --> 08:35.480 It's fine. 08:35.480 --> 08:36.110 No worries. 08:36.110 --> 08:38.870 And then let's go to this player input script. 08:38.900 --> 08:41.150 We're gonna take the name. 08:44.560 --> 08:46.660 And we're going to rename this to. 08:47.390 --> 08:48.410 Player. 08:49.100 --> 08:56.540 Input set and before you confirm it, make sure you have checked rename symbols file so it will rename 08:56.540 --> 08:58.040 file in unity as well. 08:58.070 --> 08:59.810 Now I'm going to press enter. 09:02.210 --> 09:04.700 It's going to change the name everywhere. 09:05.000 --> 09:07.700 And if I close Visual Studio. 09:08.360 --> 09:13.850 I'm going to have player input set over here with this name as well as in the script over here. 09:13.850 --> 09:14.630 Right. 09:14.630 --> 09:18.710 And because of that, now we can get component freely on a player in the future. 09:18.710 --> 09:22.940 This was a very bad decision that I did and I'm sorry I did that. 09:22.940 --> 09:23.480 All right. 09:23.480 --> 09:26.420 Now we need to assign actions over here. 09:26.420 --> 09:28.340 Let's assign it like that. 09:29.480 --> 09:31.010 Over here we can choose default scheme. 09:31.010 --> 09:36.110 I'm going to choose keyboard and I want to disable auto switch and default map will be player. 09:36.110 --> 09:36.980 Nice. 09:36.980 --> 09:38.360 Now we have this. 09:38.360 --> 09:41.450 Let's take overrides and let's apply them. 09:41.450 --> 09:43.550 Let's double check player manager. 09:43.550 --> 09:46.490 It has a prefab and everything should be ready. 09:47.000 --> 09:48.260 Let's go to player mode. 09:48.260 --> 09:50.870 And now I'm going to try to join new player. 09:50.870 --> 09:52.580 There's the one with the keyboard. 09:52.580 --> 09:56.690 Now I'm going to press start button on a gamepad and I join the player. 09:56.690 --> 10:01.160 The only problem now is that we can control both players with one device. 10:01.160 --> 10:05.840 Both of them can be controlled with the gamepad right now, and if I put my gamepad down and use my 10:05.840 --> 10:08.570 keyboard, both of them are controlled as well. 10:08.570 --> 10:10.610 So that's the fix we need to apply right now. 10:10.610 --> 10:12.920 And actually it's not that difficult to do. 10:12.950 --> 10:15.110 We just need to do one simple change. 10:15.500 --> 10:21.740 Uh, on the player script, we created this new instance of a player input. 10:22.970 --> 10:24.020 Uh, right here. 10:24.020 --> 10:25.430 This is what we do, right? 10:25.850 --> 10:34.220 And when player input manager creates a prefab with a player input component, with this component, 10:34.220 --> 10:37.940 it automatically gives it a device to control the player. 10:37.940 --> 10:45.590 And now instead of creating new player input, uh, instance, just like we do now in the script, we 10:45.590 --> 10:52.040 need to get access to this component, and then we need to get access to exactly this action map that 10:52.040 --> 10:56.000 is under this component in this field of actions over here. 10:56.000 --> 10:58.010 This is what we need to use for the input. 10:58.010 --> 11:01.220 So each player will be recognized as a different one. 11:01.310 --> 11:01.640 Right. 11:01.640 --> 11:07.130 That's what we need to do because as of now when we have two players, we create a new instance of controls 11:07.130 --> 11:08.930 for uh, each of them. 11:08.930 --> 11:16.190 But each of them, even with the new one, are controlled by, um, one device or two devices. 11:16.190 --> 11:19.400 It's just like one player that has two input devices. 11:19.400 --> 11:20.300 That's what it does. 11:20.300 --> 11:25.580 And this is how it works in a version of the game for a single player, which is totally fine because 11:25.580 --> 11:29.090 you can take the keyboard, you can play the game, then you can change your mind. 11:29.090 --> 11:31.670 You can switch to gamepad and use gamepad to play the game. 11:31.670 --> 11:34.040 So in that case, that is just what we need. 11:34.040 --> 11:37.610 But in this case, each player should be controlled by different device. 11:37.610 --> 11:40.250 That's why we're going to go ahead to the script. 11:41.040 --> 11:47.040 And change the system a little bit from create a new instance in the code over here, we're going to 11:47.040 --> 11:47.790 change it. 11:48.750 --> 11:51.270 To the variable of input action asset. 11:51.270 --> 11:57.600 And then we're going to get component of the player input and then get this input action asset. 11:57.600 --> 11:58.620 That's the goal. 11:59.560 --> 12:01.390 Yeah, I hope that makes sense. 12:01.510 --> 12:02.860 Let's go back to script. 12:04.580 --> 12:05.330 Over here. 12:05.330 --> 12:11.300 I want to remove this line of code and this, um, player input. 12:11.300 --> 12:17.090 I'll just brutally remove it, and instead we're going to make public input. 12:18.970 --> 12:27.820 Input action asset, and it shows me an underlined error message because we do not use Unity's engine 12:27.820 --> 12:28.840 input system. 12:28.840 --> 12:33.970 Let's go all the way above and type using unity engine input system. 12:34.450 --> 12:40.090 Okay, now it's fine and I want to give it the same name as I had before, so I'm going to name it as 12:40.090 --> 12:41.380 player input. 12:41.830 --> 12:44.980 Let's do get private set so we can use it in the future. 12:44.980 --> 12:51.010 So we just basically changed the variable from a player input set to input action asset. 12:51.010 --> 12:54.940 Now this one is like an empty variable of a type input action asset. 12:54.940 --> 12:57.250 And we need to give it some value. 12:57.250 --> 12:58.960 We need to assign it somewhere. 13:00.220 --> 13:02.890 We're going to go to the awake method over here. 13:02.890 --> 13:06.640 And instead of this we're going to do player input. 13:07.640 --> 13:10.940 Equals to get component of a player input. 13:12.640 --> 13:13.690 Actions. 13:14.400 --> 13:15.090 All right. 13:15.090 --> 13:20.880 So if you remember, actions over here is the same thing as action over here. 13:20.880 --> 13:23.610 And the same thing is an action over here. 13:23.610 --> 13:25.680 So that's basically what we're doing here. 13:25.680 --> 13:31.530 We're just getting component of a player input that is used for player input manager to create players. 13:31.530 --> 13:35.670 And then we get in this action asset from the component. 13:36.520 --> 13:37.240 Okay. 13:38.280 --> 13:42.240 And now what we need to do is change code over here. 13:42.240 --> 13:46.110 And fortunately, now we have to look for action with a string. 13:46.110 --> 13:48.600 And I don't really like it, but it does work. 13:48.600 --> 13:54.630 So I guess I'll have to accept it because it works very well and it allows me to control different players 13:54.630 --> 13:55.920 with different devices. 13:55.920 --> 14:00.180 So instead of all of this, I'm going to go ahead over here. 14:01.260 --> 14:05.610 And I'm going to type dot find action. 14:06.580 --> 14:08.530 And now we need to give it name of the action. 14:08.530 --> 14:10.690 And we know that action is named jump. 14:10.690 --> 14:12.460 So I'm going to use jump over here. 14:12.550 --> 14:14.590 Close the parentheses dot performed. 14:14.590 --> 14:16.510 So that's the only change we need to do. 14:16.510 --> 14:21.370 And if you change name of the actions in your input action asset make sure you change it in the script 14:21.370 --> 14:22.120 as well. 14:22.120 --> 14:25.960 Now we need to replace it here as well but not with a jump. 14:25.960 --> 14:30.700 It should be movement and then over here as well. 14:31.490 --> 14:32.720 But not with a jump. 14:32.720 --> 14:34.490 It should be movement. 14:34.490 --> 14:35.780 That's what we need to do. 14:35.900 --> 14:38.330 Now I'm going to take this over here. 14:39.490 --> 14:41.560 Remove it because I feel a bit lazy. 14:41.560 --> 14:43.750 And I'm going to take these three lines of code. 14:44.580 --> 14:51.060 Copy them, go here, paste them in and I'm going to change from plus to minus. 14:51.960 --> 14:52.680 Minus. 14:52.680 --> 14:53.520 Over here. 14:53.520 --> 14:54.420 Very nice. 14:54.420 --> 14:56.310 Now let's save this. 14:57.600 --> 14:59.610 And let's go back to unity. 15:01.960 --> 15:03.550 I'm going to go to play mode. 15:04.470 --> 15:06.960 And I have a player that is controlled by the keyboard. 15:06.960 --> 15:11.040 And also I can press start button on a game, but and I'm going to have a player that is controlled 15:11.040 --> 15:14.970 by the gamepad, and both of them are controlled by different devices. 15:15.000 --> 15:15.990 Isn't it cool? 15:16.410 --> 15:17.520 Very very cool. 15:17.520 --> 15:18.690 I love it so much, man. 15:19.500 --> 15:20.250 Ta da! 15:20.820 --> 15:21.540 Yes. 15:21.540 --> 15:24.900 So we did a lot and yet we did a little bit. 15:24.900 --> 15:29.550 I mean, like, there was not much of a change, but we made a huge change for the game. 15:29.550 --> 15:30.000 Right. 15:30.000 --> 15:30.990 Very cool one. 15:30.990 --> 15:33.600 So I think I'm going to end the video with this. 15:33.600 --> 15:39.450 Let's just apply overrides over here and let's apply overrides on the player. 15:39.450 --> 15:40.800 Oh we don't need to do that. 15:40.800 --> 15:42.390 And let's go to the next video. 15:42.390 --> 15:45.000 We still have to do lots of changes for the system. 15:45.000 --> 15:46.590 Okay, I'll see you there.