1 00:00:00,000 --> 00:00:00,000 Hello, guys. 2 00:00:00,000 --> 00:00:02,000 In this video, we're going to make a coin for our game. 3 00:00:02,000 --> 00:00:04,000 It's going to be very simple task, honestly. 4 00:00:04,000 --> 00:00:07,000 And we're going to begin with adding graphics to the coin. 5 00:00:07,000 --> 00:00:10,000 We already have an object in the game, this one, but it's empty. 6 00:00:10,000 --> 00:00:13,000 So what we can do is to add Sprite Renderer. 7 00:00:15,000 --> 00:00:16,000 Sprite renderer. 8 00:00:17,000 --> 00:00:18,000 Oh, wait a second. 9 00:00:18,000 --> 00:00:19,000 Mouse highlight. 10 00:00:21,000 --> 00:00:23,000 So we have Sprite Renderer. 11 00:00:23,000 --> 00:00:26,000 Now we can go to graphics, find coin. 12 00:00:26,000 --> 00:00:29,000 Make sure we have pixels per unit 16. 13 00:00:29,000 --> 00:00:32,000 All right, now let's select coin and drag Sprite over here. 14 00:00:32,000 --> 00:00:36,000 Now we need to change certain layer and we can choose collectible. 15 00:00:37,000 --> 00:00:38,000 All right. 16 00:00:38,000 --> 00:00:40,000 Now, let's close this. 17 00:00:40,000 --> 00:00:43,000 We can go to assets animations. 18 00:00:43,000 --> 00:00:47,000 I'm going to create a folder for player animations layer. 19 00:00:51,000 --> 00:00:56,000 Then I'm going to drag all of this inside and I can create new animator controller. 20 00:00:56,000 --> 00:00:59,000 Over here going a C. 21 00:01:00,000 --> 00:01:02,000 Let's drag it to the coin like that. 22 00:01:02,000 --> 00:01:09,000 Then we can go to animation window and create new clip that's going to be just coin idle. 23 00:01:10,000 --> 00:01:14,000 We're not going to have any other animations for COIN, but it's kind of a good practice to give an 24 00:01:14,000 --> 00:01:15,000 understandable name. 25 00:01:15,000 --> 00:01:20,000 Let's go to graphics now and just take all of the sprites of the coin and drag it inside to coin idle. 26 00:01:20,000 --> 00:01:24,000 And I want to change sample rate to something like six. 27 00:01:25,000 --> 00:01:25,000 Let's see. 28 00:01:27,000 --> 00:01:28,000 Can this. 29 00:01:29,000 --> 00:01:34,000 I also think we could make this coin a bit smaller because it's kind of bigger than even the head of 30 00:01:34,000 --> 00:01:35,000 the player. 31 00:01:35,000 --> 00:01:37,000 So we can do maybe. 32 00:01:38,000 --> 00:01:39,000 Point eight. 33 00:01:41,000 --> 00:01:41,000 Let's see. 34 00:01:43,000 --> 00:01:44,000 I think it's okay. 35 00:01:44,000 --> 00:01:46,000 If not, we can change it later. 36 00:01:46,000 --> 00:01:48,000 So now we have a coin. 37 00:01:49,000 --> 00:01:53,000 Now let's go to a script of the coin, and I'm going to explain how it's going to work. 38 00:01:54,000 --> 00:01:55,000 So we can delete this. 39 00:01:55,000 --> 00:01:59,000 And we need one function that you've seen already in this project. 40 00:01:59,000 --> 00:02:03,000 And if you have some experience with unity, you've probably seen this function before and you used 41 00:02:03,000 --> 00:02:09,000 it on trigger enter two D, So on trigger enter is called whenever something enters the trigger. 42 00:02:09,000 --> 00:02:11,000 Now how do you create the trigger? 43 00:02:11,000 --> 00:02:12,000 Also, very simple. 44 00:02:12,000 --> 00:02:15,000 Let's go back to Unity and add Collider. 45 00:02:15,000 --> 00:02:17,000 I'm going to choose Box Collider. 46 00:02:18,000 --> 00:02:23,000 I know it's a coin and we could use Circle Collider, but I think it's nothing bad if you make Collider 47 00:02:23,000 --> 00:02:27,000 a bit bigger than the coin is, so it's easier to pick up for the player. 48 00:02:27,000 --> 00:02:30,000 So we kind of help the player without even him knowing it. 49 00:02:31,000 --> 00:02:33,000 So let's adjust the size. 50 00:02:33,000 --> 00:02:35,000 Just approximately bigger. 51 00:02:35,000 --> 00:02:36,000 Nothing special. 52 00:02:36,000 --> 00:02:37,000 And then we can check. 53 00:02:37,000 --> 00:02:40,000 This box is trigger, which is important. 54 00:02:41,000 --> 00:02:41,000 Click. 55 00:02:42,000 --> 00:02:43,000 Now it is a trigger. 56 00:02:43,000 --> 00:02:48,000 And now whenever something enters the trigger, we can do something again. 57 00:02:48,000 --> 00:02:54,000 But I want to do something specific because at the moment, anything that will enter the trigger will 58 00:02:54,000 --> 00:02:55,000 trigger it. 59 00:02:55,000 --> 00:02:59,000 But we need to be sure that it's triggered only when player enters the trigger. 60 00:02:59,000 --> 00:03:01,000 There are a couple of options to do that. 61 00:03:02,000 --> 00:03:05,000 First, I'm going to show you what mostly people use. 62 00:03:05,000 --> 00:03:07,000 It's a tag comparing so you can do. 63 00:03:07,000 --> 00:03:14,000 If collision collision means the object that collided, the tag equals equals two and you give a name 64 00:03:14,000 --> 00:03:16,000 of a tag, for example player. 65 00:03:17,000 --> 00:03:18,000 Then debug log. 66 00:03:18,000 --> 00:03:18,000 Coin. 67 00:03:18,000 --> 00:03:19,000 Right. 68 00:03:19,000 --> 00:03:22,000 How you assign a tag, you're going back to unity. 69 00:03:22,000 --> 00:03:29,000 Select the object tag and you can choose player here you can see or you can add another new one that 70 00:03:29,000 --> 00:03:29,000 you want. 71 00:03:31,000 --> 00:03:32,000 And it's going to work. 72 00:03:33,000 --> 00:03:36,000 It's going to work for sure, But I want to use a different way. 73 00:03:37,000 --> 00:03:39,000 And just make sure it's working. 74 00:03:40,000 --> 00:03:44,000 So I'm entering the trigger boom coin. 75 00:03:44,000 --> 00:03:44,000 All right. 76 00:03:45,000 --> 00:03:46,000 Let's go back. 77 00:03:46,000 --> 00:03:49,000 I want to use component because I. 78 00:03:49,000 --> 00:03:51,000 This is not my first course. 79 00:03:51,000 --> 00:03:52,000 And even this course. 80 00:03:52,000 --> 00:03:53,000 Exactly. 81 00:03:53,000 --> 00:03:54,000 I'm reworking to make it better. 82 00:03:54,000 --> 00:03:59,000 I'm trying to and I've had issue with the students who couldn't get the name right, like they could 83 00:03:59,000 --> 00:04:06,000 use small p or mix sub the name, misspell whatever, and it causes some confusion and frustration situations, 84 00:04:06,000 --> 00:04:06,000 I would say. 85 00:04:06,000 --> 00:04:11,000 So what I want to do here is not compare in a tag, but to check if object has a component which is 86 00:04:11,000 --> 00:04:13,000 as easy to do as this one. 87 00:04:13,000 --> 00:04:16,000 We can do collision dot get component. 88 00:04:17,000 --> 00:04:24,000 So we check if collision get component of player not equals to null. 89 00:04:26,000 --> 00:04:30,000 Which means there is a player component, which means it is a player. 90 00:04:30,000 --> 00:04:36,000 Then we can do some action and instead of debug this time, let's do game manager dot instance, dot 91 00:04:36,000 --> 00:04:38,000 coins plus plus. 92 00:04:39,000 --> 00:04:43,000 And right after we added a coin, we can destroy the coin as well. 93 00:04:43,000 --> 00:04:49,000 So destroy the game object and it's going to destroy a game object with this script. 94 00:04:49,000 --> 00:04:50,000 And let's go and test this. 95 00:04:50,000 --> 00:04:52,000 I'm going to save the script, go back to Unity. 96 00:04:52,000 --> 00:04:55,000 So my game manager has zero coins. 97 00:04:55,000 --> 00:04:57,000 I'll place coin in a way and I'll try to pick it up. 98 00:04:58,000 --> 00:05:00,000 Boom coin was picked up, It was destroyed. 99 00:05:00,000 --> 00:05:03,000 And my game manager has one coin now. 100 00:05:03,000 --> 00:05:04,000 Perfect. 101 00:05:04,000 --> 00:05:09,000 Now let's select Project folder prefab and drag this coin over here. 102 00:05:10,000 --> 00:05:15,000 After you did this, you can delete Coyne from the hierarchy, and whenever you need to place a new 103 00:05:15,000 --> 00:05:20,000 coin, you can do it just like this or you can place it on a level part. 104 00:05:20,000 --> 00:05:26,000 You can choose level part and just drag coin over here and it's going to be there whenever you instantiate 105 00:05:26,000 --> 00:05:26,000 new level bar. 106 00:05:26,000 --> 00:05:28,000 But we're not going to do it like that. 107 00:05:28,000 --> 00:05:31,000 We're going to create a coin generator right in the next video. 108 00:05:31,000 --> 00:05:32,000 So let's go and do that.