WEBVTT 00:00.050 --> 00:00.530 Hello guys. 00:00.530 --> 00:01.580 Welcome to the video. 00:01.580 --> 00:04.280 In this one I want to show you something very important. 00:04.280 --> 00:07.880 I want to show you how to create objects at runtime. 00:07.880 --> 00:13.640 This is very important feature that can help us to respawn player when he dies, or maybe respawn enemies 00:13.640 --> 00:18.350 if you want to, or some you know, other things that may be needed in your game in your project. 00:18.350 --> 00:20.660 So to explain how do we create an object? 00:20.660 --> 00:25.700 I want to create a visual effect for the fruit when we picking up the item. 00:26.540 --> 00:29.810 Let's go ahead to the graphics. 00:30.620 --> 00:32.150 Items fruits. 00:32.150 --> 00:35.030 And there is this collected visual effect. 00:35.030 --> 00:40.610 Let's take the first sprite and let's drag it over here I can see we need to do 16. 00:40.610 --> 00:41.150 It's okay. 00:41.150 --> 00:42.380 So we have this. 00:42.440 --> 00:48.380 Let's set it on a items layer and let's do minus one over here. 00:48.380 --> 00:50.810 So it will be behind the fruit itself. 00:50.810 --> 00:55.550 If we set order in layer zero it will always depend on the hierarchy. 00:55.550 --> 00:58.370 If we set it to one it will be always above the fruit. 00:58.370 --> 01:00.020 But we want it to be behind the fruit. 01:00.020 --> 01:01.460 So I'm going to do minus one. 01:01.460 --> 01:02.420 Very well. 01:02.420 --> 01:07.460 Now, uh, I think we do need to make a child object for this one because we're just going to have visual 01:07.460 --> 01:08.300 effect, nothing else. 01:08.300 --> 01:10.580 So we can place animator on the same object. 01:10.580 --> 01:12.260 Let's just name it as pickup. 01:12.260 --> 01:13.100 We fix. 01:13.100 --> 01:15.950 So this is a visual effect for the item pickup. 01:16.370 --> 01:19.340 And let's add an animator. 01:20.200 --> 01:21.130 Uh, controller? 01:21.160 --> 01:23.260 Now we need a controller over here. 01:23.260 --> 01:29.200 So I'm going to go to Assets Animation and create animator controller. 01:29.960 --> 01:32.480 Pick up the fix. 01:32.690 --> 01:37.040 AC okay, now let's drag it on the visual effect over here. 01:37.040 --> 01:38.330 So this is the thing. 01:38.330 --> 01:40.430 That's the only thing we need for now. 01:40.430 --> 01:42.590 Now let's go. 01:43.620 --> 01:48.480 Uh, to the animation, click Create New Clip and we're going to do. 01:49.230 --> 01:49.950 Fruit. 01:50.600 --> 01:52.040 Pick up my fix. 01:52.310 --> 01:53.810 Okay, nice. 01:53.810 --> 01:59.210 And now we need to go back to graphics and grab those sprites. 02:00.090 --> 02:02.160 And put them on the animation. 02:02.160 --> 02:04.050 Sample rate will be 20. 02:05.910 --> 02:07.170 And this is how it looks. 02:08.170 --> 02:08.860 Nice, right? 02:08.860 --> 02:11.110 So this is how it looks when we pick it up the item. 02:12.050 --> 02:17.120 Uh, we also would have to make it transparent once it is done. 02:17.120 --> 02:21.350 Like once we don't have anything to display once animation is over. 02:21.350 --> 02:25.820 And we could disable this visual effect right after the last frame. 02:25.820 --> 02:29.870 But for that, we would have to make a script, which I don't really want to do, because that would 02:29.870 --> 02:30.650 be just for one. 02:30.650 --> 02:34.100 Actually, it would be a good idea because I can show you how to use animation events. 02:34.100 --> 02:35.120 So let's do it. 02:35.420 --> 02:38.240 First, let's create the visual effect. 02:38.480 --> 02:42.860 After we pick up the fruit for that we need to make it as a prefab. 02:42.860 --> 02:44.420 So I'm going to go to prefab folder. 02:44.420 --> 02:46.940 And I'm going to drag this visual effect over here. 02:46.940 --> 02:53.150 Now whenever we want to use a visual effect we can just create this object at runtime. 02:53.800 --> 02:55.270 This is how we do it. 02:55.270 --> 02:57.430 We go to the fruit apple. 02:57.430 --> 02:59.230 Let's go to the script. 02:59.230 --> 03:00.490 Actually, it can be any fruit. 03:00.490 --> 03:02.140 I'm just choosing this one. 03:02.140 --> 03:04.450 And over here we need serialize field. 03:04.630 --> 03:06.220 Private GameObject. 03:07.250 --> 03:10.640 Pick up very fix very well. 03:10.640 --> 03:15.020 So now we have a reference to the object that would serve as a visual effect. 03:15.020 --> 03:17.510 Now once we are. 03:18.170 --> 03:19.130 Done with the fruit. 03:19.130 --> 03:22.970 Once we destroy in it, we can create a visual effect. 03:23.900 --> 03:26.150 For that, we can use instantiate. 03:27.390 --> 03:32.880 And usually I like to get a local variable of the game object in case we need to do some manipulations 03:32.880 --> 03:33.180 with it. 03:33.180 --> 03:34.920 So I'm going to do game object. 03:35.970 --> 03:39.210 New fix equals to instantiate. 03:39.660 --> 03:44.370 Pick up a fix so this one will create object at runtime. 03:44.370 --> 03:48.630 Then if you need to do something with it, you can do a new fix and do some stuff. 03:48.630 --> 03:51.930 For example, I want to destroy this effect after one second. 03:51.930 --> 03:59.460 So I'm going to do destroy a new way fix, and I'm going to give it a delay of maybe even 0.5 seconds. 03:59.460 --> 04:00.420 So that's it. 04:00.420 --> 04:02.400 So now this will create an object. 04:02.880 --> 04:05.700 And I think we can go ahead and just see how does this work. 04:07.130 --> 04:08.720 Let's go to unity. 04:10.130 --> 04:13.850 Now we would have to assign this visual effect to all of the prefabs we have. 04:13.850 --> 04:16.010 So I'm going to go to prefab folder. 04:16.900 --> 04:20.710 Select all of the fruits and just drag this effect over here. 04:20.980 --> 04:21.850 Very well. 04:21.850 --> 04:25.390 Now these all have in their visual effect. 04:25.390 --> 04:28.390 And I'm going to go ahead and try to pick up the items. 04:29.720 --> 04:32.720 Now we can see what is happening there if you don't destroy the object. 04:32.720 --> 04:34.640 So I'm going to just switch it off for now. 04:35.290 --> 04:36.550 And let's go. 04:41.370 --> 04:43.320 And we created a visual effect. 04:43.320 --> 04:46.470 The only problem is it is created over here. 04:48.190 --> 04:50.320 Not at the position of the fruit. 04:50.320 --> 04:52.540 To fix that, we need to go to the script. 04:52.540 --> 04:58.240 And over here in the parenthesis we can pass a transform position. 04:58.240 --> 05:03.160 And because we type transform position over here, it will take position of the fruit. 05:04.820 --> 05:07.970 Because we instantiate an object inside of a fruit script. 05:07.970 --> 05:13.970 So transform position of a fruit script is a position of the object right position of the fruit. 05:13.970 --> 05:16.040 So we type here transform position. 05:16.040 --> 05:18.590 And now we need to pass here a rotation. 05:18.590 --> 05:20.570 That is how it's supposed to be. 05:20.570 --> 05:26.810 So I'm going to type quaternion identity which basically means do not change the rotation. 05:26.810 --> 05:27.920 This is how it is. 05:28.340 --> 05:29.840 So I'm going to save this. 05:30.880 --> 05:31.840 Going to go back. 05:34.800 --> 05:37.890 Go to play mode and I'm going to pick up the. 05:37.890 --> 05:39.420 Let me switch off this one. 05:40.940 --> 05:45.950 I'm going to pick up the fruit and we can see visual effect was created and the fruit itself. 05:45.950 --> 05:48.950 The only issue is it was played a couple of times. 05:48.950 --> 05:49.580 Here. 05:49.580 --> 05:51.380 We have a couple of ways to solve it. 05:51.380 --> 05:53.720 One of them we can go to asset. 05:54.410 --> 06:02.420 Animations, find the pickup animation through the pickup wave fix, and we can uncheck loop time over 06:02.420 --> 06:02.990 here. 06:02.990 --> 06:05.480 Because of that, it will be played only once. 06:05.480 --> 06:06.110 Let's go ahead. 06:06.110 --> 06:07.640 I'm going to show you how does it look. 06:08.120 --> 06:09.470 So here it is. 06:10.350 --> 06:17.160 It will stop at the last frame, and we could find an empty sprite somewhere and put it in the end of 06:17.160 --> 06:21.510 the animation so it will become invisible once visual effect is played. 06:21.960 --> 06:24.240 That is one of the ways to do it. 06:24.240 --> 06:30.420 Let me go ahead and quickly find some empty sprite I think we can just go to. 06:31.500 --> 06:32.580 Let's go to items. 06:32.580 --> 06:33.180 Fruits. 06:33.210 --> 06:34.590 Let's take this collected. 06:34.590 --> 06:36.660 I'm going to duplicate it. 06:36.960 --> 06:39.270 Let's just do copy paste. 06:39.390 --> 06:41.460 I'm going to name it as empty. 06:41.640 --> 06:47.550 And in the sprite editor over here, instead of all of this, we can simply. 06:48.390 --> 06:52.740 Take this area where we have nothing. 06:53.100 --> 06:55.320 So now we're going to hit apply. 06:55.350 --> 07:00.960 This will be an empty sprite over here, and we can go to the end of the animation and place an empty 07:00.960 --> 07:02.340 sprite over here. 07:02.460 --> 07:06.540 So now it will play the animation and then it will become invisible. 07:06.540 --> 07:09.720 And then we can destroy it whenever we are ready. 07:09.720 --> 07:11.700 And this is how it would look. 07:16.920 --> 07:18.960 Yeah, and this works pretty well. 07:18.960 --> 07:24.120 And to be honest, if I would just be making projects for myself, I would do it this way because I 07:24.120 --> 07:25.590 kind of like how tricky it is. 07:25.590 --> 07:30.630 We don't need to do anything extra, but this is a great chance for me to show you how to work with 07:30.630 --> 07:33.150 animation events, and that's what I'm going to do. 07:33.570 --> 07:36.720 Let's go to the scripts and let's make. 07:37.410 --> 07:38.850 Uh C sharp script. 07:39.610 --> 07:40.150 Road. 07:40.150 --> 07:42.520 Pick up the fix. 07:43.940 --> 07:44.810 Just like that. 07:45.280 --> 07:52.840 And over here we're going to make a method public void destroy me, in which we're going to just type 07:52.840 --> 07:56.050 destroy game object just like that. 07:56.050 --> 07:57.640 That's all that we need. 08:00.620 --> 08:05.090 And then if we go to pick up visual effect over here and put the script. 08:05.880 --> 08:08.190 On the GameObject over here. 08:08.190 --> 08:15.060 Then in the animation over here, we can go to the frame after the last frame over here. 08:15.910 --> 08:19.210 And over here we can click Add Event. 08:19.920 --> 08:23.880 We added an event and over here for this event we can choose function. 08:23.880 --> 08:29.040 And because we have this fruit pickup visual effect script, we can go to methods over here and find 08:29.040 --> 08:31.770 Destroy Me method that we just created. 08:31.770 --> 08:33.450 This can be useful for many cases. 08:33.450 --> 08:35.520 This is just an example on how to use events. 08:35.520 --> 08:37.170 This function can say anything. 08:37.170 --> 08:38.850 You can update the variables. 08:38.850 --> 08:40.980 You know so many things can be done here. 08:40.980 --> 08:44.070 So we're going to assign this method over here. 08:44.070 --> 08:48.390 And because of that this method will be called exactly at this frame. 08:48.390 --> 08:53.580 And because of that fruits will be destroyed even if we don't set timer. 08:54.120 --> 08:58.800 Uh, over here, let me just set five for example. 08:58.800 --> 09:03.450 So it should be destroyed after five seconds, but you'll see it will be destroyed once animation is 09:03.450 --> 09:04.140 over. 09:06.340 --> 09:08.500 And there it goes. 09:08.770 --> 09:09.910 Works like a charm. 09:17.300 --> 09:18.260 Yeah, we need to. 09:21.160 --> 09:24.730 We need to do apply overrides to everything. 09:24.730 --> 09:31.600 So this, uh, change will be applied to all of the visual effects, even in the prefab folder over 09:31.600 --> 09:34.390 here, because this one had none. 09:34.390 --> 09:38.860 So over here we can see we have an event and it is assigned okay. 09:40.020 --> 09:40.860 Now let's go back. 09:40.860 --> 09:42.180 We can delete this one. 09:43.310 --> 09:47.030 We can clear the console and let's go to game window. 09:47.330 --> 09:52.100 And I'm going to pick up fruit and visual effect played and destroyed. 09:53.350 --> 09:55.240 So I showed you two approaches. 09:55.240 --> 09:56.020 How we can do it. 09:56.020 --> 09:57.460 Which one to choose is up to you. 09:57.460 --> 10:00.760 I just want to teach you as many things as possible. 10:00.760 --> 10:01.270 All right. 10:01.270 --> 10:05.800 For educational purpose, I'm going to keep this script in the script folder. 10:05.800 --> 10:10.420 Let it be there and let's use animation event because it doesn't really matter what we choose here. 10:12.610 --> 10:19.660 But you should know that we could just use a delay over here and empty sprite in the end of the animation. 10:19.660 --> 10:22.780 Yeah, well, for now, I'm just going to remove it. 10:23.770 --> 10:25.600 Like so and I guess that's it. 10:25.600 --> 10:27.820 So this is how you use instantiate. 10:27.820 --> 10:31.450 And we're going to use it to respawn the player in a couple of videos. 10:31.450 --> 10:33.610 So yeah, I guess this is it. 10:33.610 --> 10:35.290 Thank you so much for paying attention. 10:35.290 --> 10:37.000 And I'll see you in the next video.