WEBVTT 00:00.020 --> 00:00.560 Hello guys. 00:00.560 --> 00:01.520 Welcome to the video. 00:01.520 --> 00:05.360 In this one I want to show you how to make checkpoints okay. 00:05.360 --> 00:09.980 So let's go to the graphics item checkpoint. 00:09.980 --> 00:11.180 Checkpoint. 00:11.390 --> 00:13.220 Let's take this, uh. 00:14.290 --> 00:18.610 Actually, we need to take all of them and do pixel per unit 16. 00:18.910 --> 00:19.510 Okay. 00:20.790 --> 00:24.870 Now we have animation of checkpoint being activated. 00:25.290 --> 00:29.730 Then we have animation for checkpoint, like, you know, being active. 00:31.640 --> 00:34.130 And we have animation of an idle checkpoint. 00:34.430 --> 00:36.920 I'm going to take the sprite of an idle checkpoint. 00:37.920 --> 00:40.980 Let's switch sorting layer to items. 00:43.840 --> 00:44.980 Just like that. 00:45.280 --> 00:46.210 Uh, yeah. 00:46.210 --> 00:48.100 Let's do minus one over here. 00:49.500 --> 00:52.740 And let's name it as checkpoint. 00:53.560 --> 00:54.430 And just checkpoint. 00:54.430 --> 00:54.850 Yeah. 00:55.180 --> 01:00.640 Now I think we can place animator controller on the same game object, so it is easier to control with 01:00.640 --> 01:01.450 the script. 01:02.280 --> 01:07.230 And let's just go to scripts and make new C sharp script. 01:07.500 --> 01:08.730 Checkpoint. 01:10.990 --> 01:14.680 Now I'm going to open it and I'm going to do close all by this. 01:17.400 --> 01:26.430 Now over here, what we need is private animator animation, and I think we need a boolean that would 01:26.430 --> 01:29.940 say if checkpoint can be activated again. 01:29.940 --> 01:32.730 So we actually need to make a decision here. 01:33.060 --> 01:35.250 Uh, let's say you have a level like. 01:36.650 --> 01:37.250 This. 01:37.250 --> 01:40.670 And you have checkpoint here and checkpoint here. 01:40.670 --> 01:44.420 When player goes to the first checkpoint, it is activated. 01:45.800 --> 01:49.460 Then player goes to the second checkpoint and it is activated. 01:49.670 --> 01:57.500 Then let's say player jumps and dies somewhere here and where we're going to respawn the player on the 01:57.500 --> 02:00.140 last checkpoint or on the closest one. 02:00.140 --> 02:03.140 It is purely up to your decision, I think. 02:03.140 --> 02:08.000 Uh, to keep it simple, I will just respawn him at the last checkpoint activated. 02:08.000 --> 02:12.980 So we're going to need private bool can be activated. 02:14.610 --> 02:15.630 And also we need. 02:15.660 --> 02:16.020 Private. 02:16.020 --> 02:16.530 Bool. 02:16.530 --> 02:17.400 Active. 02:18.440 --> 02:21.800 Then we're going to make Ontriggerenter 2D. 02:22.190 --> 02:25.130 And over here we're going to get player player. 02:26.730 --> 02:29.670 Collision getcomponent of a player. 02:29.970 --> 02:31.650 And then we're going to need a method. 02:33.030 --> 02:38.700 Activate checkpoint, which will do one simple thing. 02:38.700 --> 02:42.030 It would say, uh enum. 02:42.030 --> 02:43.440 Set bool. 02:45.950 --> 02:49.010 Active to the Boolean of active. 02:49.770 --> 02:53.070 Actually, we could use trigger as well, I think. 02:53.070 --> 02:56.790 And actually we don't need this second boolean. 02:56.940 --> 02:58.200 I have a better idea. 02:59.760 --> 03:00.060 Yeah. 03:00.060 --> 03:01.830 So this is what it's going to do. 03:01.920 --> 03:08.430 Then over here we're going to do if player not equals to null then activate. 03:10.690 --> 03:11.590 Checkpoint. 03:12.040 --> 03:15.880 And over here at the start we're going to do. 03:18.430 --> 03:24.640 If active, then return so we cannot activate checkpoint again if it is already active. 03:24.640 --> 03:27.340 And also of course I forgot to do it here. 03:27.340 --> 03:29.410 We need to do active equals to true. 03:29.410 --> 03:30.310 I'm sorry. 03:30.310 --> 03:32.290 So yeah how it's going to work. 03:33.310 --> 03:36.550 We have animator and we have Boolean checkpoint active. 03:37.250 --> 03:41.690 Once player enters the trigger, we check if it is active now. 03:41.690 --> 03:47.750 If it's not, then we can proceed with trying to get component of a player and then if player is not 03:47.750 --> 03:50.930 equals to null means player entered the trigger. 03:50.930 --> 03:55.910 And because of that we're going to call the method activate checkpoint which would set active boolean 03:55.910 --> 03:56.510 to true. 03:56.510 --> 04:01.760 Because of that, this would not be able to activate itself again. 04:02.150 --> 04:05.000 And then we would take animator and set. 04:05.590 --> 04:08.860 Value of the parameter to the value of the boolean we have. 04:09.220 --> 04:10.930 So we can play animations. 04:11.880 --> 04:12.510 Yeah. 04:12.510 --> 04:13.980 Let's save this. 04:13.980 --> 04:15.150 Let's go back. 04:16.350 --> 04:17.460 We need to find a checkpoint. 04:17.460 --> 04:19.920 We need to put checkpoint script on it. 04:22.630 --> 04:27.730 And then we need to add a box Collider 2D make it is trigger. 04:27.730 --> 04:31.150 Let's adjust the collider to something like. 04:31.940 --> 04:33.350 So maybe. 04:35.150 --> 04:37.460 Yeah, this should be just fine, I guess. 04:38.670 --> 04:40.740 Then we need animator controller. 04:40.740 --> 04:44.430 Let's go to animations and let's make new one. 04:46.360 --> 04:48.070 Check point. 04:48.310 --> 04:53.440 AC then we're going to take Checkpoint Drug Animator controller over here. 04:53.650 --> 04:56.740 And then we're going to create new clip. 04:56.740 --> 04:57.280 For this. 04:57.280 --> 05:00.610 Make sure you select checkpoint click create. 05:01.380 --> 05:01.830 Over here. 05:01.830 --> 05:02.970 I'm going to do a check. 05:03.760 --> 05:05.950 Check point idol. 05:10.900 --> 05:12.910 And let's go to graphics. 05:13.530 --> 05:15.390 Item checkpoint. 05:16.100 --> 05:20.840 Checkpoint, and let's just drag it here as an idle. 05:20.840 --> 05:22.130 Then let's make. 05:23.610 --> 05:26.610 Checkpoint activated. 05:26.610 --> 05:30.240 And for this one we're going to use this animation over here. 05:30.900 --> 05:32.400 Let's just drag it like so. 05:32.400 --> 05:34.230 Make sample rate 20. 05:36.140 --> 05:38.300 And then we're going to make new clip. 05:39.370 --> 05:40.870 Checkpoint. 05:44.710 --> 05:46.120 Idle active. 05:46.750 --> 05:51.130 And for this one we're going to use this checkpoint with a flag like that. 05:51.130 --> 05:52.750 Sample rate 20. 05:53.080 --> 05:54.820 Now let's go to animator. 05:56.700 --> 05:58.650 Let's select checkpoint. 05:58.650 --> 06:01.590 And over here we want to have checkpoint idle. 06:02.010 --> 06:05.550 Then we need checkpoint activated. 06:06.030 --> 06:08.310 Then checkpoint idle active. 06:08.340 --> 06:10.800 We're going to make one transition here. 06:10.800 --> 06:16.080 If Boolean is true active it should be used. 06:16.080 --> 06:17.370 Trigger parameter. 06:20.390 --> 06:21.830 Because we're not going to transfer back. 06:21.830 --> 06:25.040 So we don't have a reason to check boolean all the time, right? 06:25.040 --> 06:25.550 Yeah. 06:25.550 --> 06:26.990 Let's let's do it. 06:28.030 --> 06:30.580 Let's do trigger activate. 06:30.970 --> 06:31.690 Okay. 06:32.020 --> 06:35.800 So over here we're going to add condition activate. 06:37.010 --> 06:38.390 Let's uncheck exit time. 06:38.390 --> 06:40.250 Transition duration zero. 06:41.560 --> 06:44.950 Then we're going to make another transition to idle active. 06:44.950 --> 06:51.580 And here we're not going to need any condition, but we need exit time one and transition duration zero 06:51.580 --> 06:52.690 just like that. 06:52.690 --> 06:56.110 And then it's going to use this animation and there is no exit from it. 06:57.640 --> 07:04.030 Okay, let's go back and change the parameter to activate. 07:09.140 --> 07:11.000 Okay, I'm going to save it. 07:13.570 --> 07:15.970 And then we're going to try it out. 07:15.970 --> 07:17.290 Let's go to the scene. 07:17.290 --> 07:18.310 To the game. 07:19.570 --> 07:22.390 And I'm going to just try to jump on the checkpoint. 07:28.040 --> 07:28.640 Oh. 07:29.840 --> 07:31.400 Something is wrong. 07:32.680 --> 07:33.100 Let's see. 07:33.100 --> 07:33.820 What is it? 07:36.230 --> 07:36.920 And him. 07:36.920 --> 07:38.570 I did not get animator. 07:39.840 --> 07:40.890 Uh, wake. 07:42.480 --> 07:47.640 Also, you know what this animator is going to be called only once when we activate in checkpoint. 07:48.320 --> 07:54.650 So instead of getting a component, we can do like this get component of animator. 07:54.680 --> 08:00.500 The issue with this is that every time you call an animator, it would try to get component. 08:00.500 --> 08:05.180 And actually when you get in component it takes some, you know, processing power. 08:05.940 --> 08:08.970 And if you just maybe use, uh. 08:10.020 --> 08:17.730 Like for example, if we do random return getcomponent, then every time we use animator in this method, 08:17.730 --> 08:21.810 every time it would get a component every frame, that would be crazy. 08:21.810 --> 08:23.070 That is not okay. 08:23.070 --> 08:27.060 But on a checkpoint when we're doing it only once, I think we can do it this way. 08:27.060 --> 08:27.780 It's fine. 08:28.640 --> 08:30.770 Yeah, and let's save it. 08:37.350 --> 08:38.400 Go to play mode. 08:38.550 --> 08:39.450 Ay yay yay. 08:39.480 --> 08:40.890 We're going to see it now. 08:41.400 --> 08:45.510 I don't know what's up with this, um, error message over here. 08:45.510 --> 08:50.160 I'm getting it only in a new version of unity, and I hope it will be fixed by the time you're doing 08:50.160 --> 08:51.120 this course. 08:53.990 --> 08:55.160 Nice. 08:55.160 --> 08:57.110 Very pretty, I like it. 08:57.170 --> 09:04.790 Now let's actually reassign a position on a game manager when we activate a checkpoint. 09:05.690 --> 09:09.440 So I'm going to go here and I'm going to make. 09:11.070 --> 09:12.360 What we can do here. 09:17.980 --> 09:19.480 I'm going to do public void. 09:20.720 --> 09:24.050 Update respawn position. 09:24.800 --> 09:30.140 And over here, we need to pass a value the same way as we did with a boolean. 09:30.140 --> 09:34.580 We can just make a vector three new position. 09:35.660 --> 09:39.020 And then we would take, uh, sorry, we're not using position. 09:39.020 --> 09:39.860 We're using transform. 09:39.860 --> 09:41.840 So we need to do transform. 09:43.370 --> 09:44.630 Let's do transform. 09:47.180 --> 09:50.510 And let's do a new respawn point. 09:51.080 --> 09:56.570 Then we don't need curly brackets over here because we can do lambda expression and type. 09:56.570 --> 10:01.610 Respawn point is equals to new respawn point just like that. 10:01.880 --> 10:04.070 Now on the checkpoint itself. 10:06.610 --> 10:09.760 When we activate in checkpoint, we're going to call Game Manager. 10:09.790 --> 10:14.470 Game manager dot instance update respawn position. 10:14.470 --> 10:17.410 And as a transform we're going to pass checkpoint itself. 10:17.410 --> 10:19.270 So I'm going to just pass transform. 10:19.930 --> 10:21.040 And save it. 10:23.130 --> 10:26.370 Now we go back and it's supposed to be cool. 10:26.370 --> 10:27.300 Let's go. 10:27.300 --> 10:29.850 Sorry, I got a bit sleepy to do. 10:29.850 --> 10:32.610 Let's go and activate checkpoint. 10:34.040 --> 10:38.840 And we're going to see on the game Manager we've got respawn point checkpoint. 10:39.860 --> 10:41.930 Okay, now let me try to. 10:43.230 --> 10:45.330 Jump into the pit and. 10:45.990 --> 10:47.130 Yes. 10:47.130 --> 10:48.120 Okay. 10:48.390 --> 10:52.590 Now, if you have a couple of them, only the latest one will work. 10:54.370 --> 10:57.910 Let me quickly try that out and we're going to go to the next video. 10:59.670 --> 11:00.630 Um, yeah. 11:01.710 --> 11:02.940 Just like that. 11:05.440 --> 11:06.370 Now it is activated. 11:06.370 --> 11:07.120 I'm going to die. 11:07.120 --> 11:07.990 And. 11:08.900 --> 11:09.350 Here, am I? 11:09.380 --> 11:10.040 Okay. 11:17.680 --> 11:18.520 Very cool. 11:22.950 --> 11:23.730 Okay. 11:23.730 --> 11:26.010 And you cannot activate these checkpoints. 11:26.010 --> 11:27.000 So yeah. 11:27.000 --> 11:27.540 Sorry. 11:27.540 --> 11:30.930 If you want to activate these checkpoints you have to do something about it. 11:30.930 --> 11:31.920 Maybe. 11:32.850 --> 11:34.710 You know, let me just show you the functionality. 11:34.710 --> 11:35.310 Why not? 11:36.250 --> 11:38.260 Let's make a serialized field. 11:38.290 --> 11:42.640 Private bool can be reactivated. 11:42.940 --> 11:45.820 If you have a better name, you can use it and. 11:48.990 --> 11:52.890 We're going to do this and can be reactivated equals to false. 11:52.890 --> 11:57.120 So if this one is false then this if statement still will work. 11:57.120 --> 12:00.780 But if you make it true then it doesn't matter if it is active or not. 12:00.780 --> 12:04.980 You're still going to, uh, activate checkpoint on trigger enter. 12:04.980 --> 12:05.640 Yeah. 12:05.730 --> 12:08.250 And let's go ahead and try this. 12:10.410 --> 12:15.930 Maybe we can make some parameter on a game manager that would tell checkpoints can be reactivated, 12:15.930 --> 12:18.180 but that is not as important right now. 12:18.570 --> 12:19.350 And let's go. 12:22.510 --> 12:23.350 My bed. 12:26.450 --> 12:31.580 So now we can see on the game manager we have checkpoint one is active checkpoint. 12:31.580 --> 12:33.410 Then I'm going to jump to second one. 12:34.190 --> 12:35.780 Now on the game manager. 12:35.780 --> 12:38.000 First checkpoint is a checkpoint. 12:38.000 --> 12:41.570 Now I'm going to go back to the one I had before. 12:42.300 --> 12:44.100 And now in a game manager. 12:46.870 --> 12:49.780 Oh didn't work because it cannot be reactivated. 12:49.780 --> 12:52.210 Let's select them and say can be reactivated. 12:52.210 --> 12:55.210 Okay, game manager, I'm going to see it. 12:56.260 --> 12:56.590 Yeah. 12:56.590 --> 12:57.310 We switched. 12:58.570 --> 13:01.510 So if you want to keep this available, you can do that. 13:01.510 --> 13:02.740 That is up to you. 13:03.990 --> 13:06.180 The last checkpoint you touched would be your checkpoint. 13:07.440 --> 13:09.720 Uh, for me, I'm going to switch it off. 13:09.720 --> 13:10.830 I don't want to have it. 13:10.830 --> 13:14.850 So now let me delete the extra and let's go to assets prefab. 13:14.850 --> 13:16.950 Let's make prefab out of this one. 13:17.250 --> 13:22.590 Also let's go to animations and let's make a folder for checkpoints checkpoint. 13:23.910 --> 13:25.680 And let's drag it here. 13:26.720 --> 13:27.470 Hello, guys. 13:27.470 --> 13:29.180 I made a mistake in a script. 13:29.180 --> 13:32.600 Uh, for some reason, it didn't show me an error, and I did work. 13:32.600 --> 13:33.950 So if you're confused. 13:33.950 --> 13:34.430 Me too. 13:34.430 --> 13:35.360 I'm confused as well. 13:35.360 --> 13:35.570 Why? 13:35.570 --> 13:36.470 It did work. 13:36.470 --> 13:38.330 But anyway, I'm going to show you. 13:38.330 --> 13:39.500 What did I do wrong? 13:39.500 --> 13:41.630 Over here on the animator, we're using trigger. 13:41.630 --> 13:44.330 And in the script I use anim set bool. 13:44.330 --> 13:45.980 And it worked. 13:45.980 --> 13:47.900 So I guess magic. 13:47.900 --> 13:50.060 Nevertheless, I want to be sure it is right. 13:50.060 --> 13:53.990 So I'm going to do set trigger and I'm going to just. 13:54.920 --> 13:55.850 Leave it at that. 13:55.850 --> 13:56.180 Okay? 13:56.180 --> 13:57.590 This is how it's supposed to be. 13:57.620 --> 13:59.360 Uh, thank you so much for paying attention. 13:59.360 --> 14:01.010 And let's go to the next video.