1 00:00:00,000 --> 00:00:00,000 Hello, guys. 2 00:00:00,000 --> 00:00:04,000 In this video, we're going to make a move and trap the trap that is kind of patrolling from left to 3 00:00:04,000 --> 00:00:05,000 right. 4 00:00:05,000 --> 00:00:09,000 Or if I could say it in another words, moving from one move point to another. 5 00:00:09,000 --> 00:00:10,000 Let's do this. 6 00:00:10,000 --> 00:00:17,000 Let's create two D sprites and I want to choose Hexagon pointer top. 7 00:00:17,000 --> 00:00:25,000 Yeah, this one let's name is moving Trap I guess certain layer platform minus one. 8 00:00:26,000 --> 00:00:29,000 And let's reset position to zero. 9 00:00:31,000 --> 00:00:34,000 And color should be red because it's dangerous. 10 00:00:35,000 --> 00:00:37,000 Now we have visuals for this trap. 11 00:00:37,000 --> 00:00:40,000 What I want to do next is create a script. 12 00:00:40,000 --> 00:00:43,000 And I'm going to name it as moving track. 13 00:00:44,000 --> 00:00:47,000 Now, what would be your first instinct to make this trap? 14 00:00:47,000 --> 00:00:48,000 I guess you need to make a damage. 15 00:00:48,000 --> 00:00:52,000 And for that you could go and create on trigger enter. 16 00:00:53,000 --> 00:00:53,000 Right? 17 00:00:53,000 --> 00:00:55,000 Yes, that is absolutely correct. 18 00:00:55,000 --> 00:00:58,000 But we use an object oriented programming. 19 00:00:59,000 --> 00:01:04,000 And for there, we need to reuse code as much as possible. 20 00:01:04,000 --> 00:01:10,000 We can copy code from here, just copy and paste like this. 21 00:01:10,000 --> 00:01:15,000 But it's not a good practice If you can make it in a different way and you can make it in a different 22 00:01:15,000 --> 00:01:18,000 way, you can use inheritance. 23 00:01:18,000 --> 00:01:23,000 It's one of the main principles of object oriented programming, inheritance, how you do it. 24 00:01:23,000 --> 00:01:29,000 So as of now, this script is inherited from a behavior, and this script is inherited from monarch 25 00:01:29,000 --> 00:01:29,000 behavior. 26 00:01:30,000 --> 00:01:35,000 But we can go here and instead of modern behavior, we can just type trap. 27 00:01:36,000 --> 00:01:42,000 And now whatever information is in the trap can be passed to move in trap. 28 00:01:42,000 --> 00:01:48,000 For example, I'm going to create public float damage. 29 00:01:48,000 --> 00:01:49,000 All right. 30 00:01:50,000 --> 00:01:57,000 Now I have here variable damage and if in the start I would like to assign it to like 50 or something 31 00:01:57,000 --> 00:01:57,000 day much 50. 32 00:01:57,000 --> 00:02:00,000 I could and I could go to move in trap. 33 00:02:02,000 --> 00:02:05,000 Create the start function and assign damage to 50. 34 00:02:05,000 --> 00:02:09,000 And move in trap would have its own variable damage. 35 00:02:09,000 --> 00:02:10,000 Not like in the trap. 36 00:02:10,000 --> 00:02:16,000 So basically it's another object with the properties and functions of this object. 37 00:02:16,000 --> 00:02:18,000 But what if we don't want to make it public? 38 00:02:18,000 --> 00:02:19,000 We want to make it private. 39 00:02:19,000 --> 00:02:20,000 There is a way to do that. 40 00:02:20,000 --> 00:02:28,000 But this time, instead of private, you type protected and now it is available only to this script 41 00:02:28,000 --> 00:02:32,000 or for any script that is inherited from the script. 42 00:02:32,000 --> 00:02:35,000 But if you make it private, you can see in the movie Trap. 43 00:02:35,000 --> 00:02:37,000 Now I don't have access to damage. 44 00:02:39,000 --> 00:02:41,000 It shows me an error. 45 00:02:41,000 --> 00:02:43,000 All right, so what are we going to do here? 46 00:02:43,000 --> 00:02:45,000 We're going to delete this. 47 00:02:45,000 --> 00:02:52,000 And instead of private void, we're going to do protected virtual void on trigger enter, blah blah. 48 00:02:53,000 --> 00:02:57,000 And I guess I want to make it a bit prettier like this. 49 00:02:57,000 --> 00:02:58,000 I like it more. 50 00:02:58,000 --> 00:03:03,000 Now we go to move in trap, delete this, and I'm going to type override. 51 00:03:04,000 --> 00:03:09,000 And I can choose from the list on trigger enter to the. 52 00:03:09,000 --> 00:03:17,000 So this one line of code contains all of the stuff that is written here and you can adjust it and add 53 00:03:17,000 --> 00:03:18,000 some other stuff. 54 00:03:18,000 --> 00:03:21,000 So you would get damage and you would debug a message and so on. 55 00:03:21,000 --> 00:03:23,000 Let's try and do that. 56 00:03:23,000 --> 00:03:26,000 Divide log damaged by moving trap. 57 00:03:28,000 --> 00:03:31,000 And here I would write the backlog. 58 00:03:33,000 --> 00:03:35,000 Damaged by regular trop. 59 00:03:37,000 --> 00:03:38,000 And I need the curly brackets for that. 60 00:03:38,000 --> 00:03:39,000 Sorry. 61 00:03:43,000 --> 00:03:45,000 Okay, let's go and see the difference. 62 00:03:45,000 --> 00:03:46,000 Going to enter play mode. 63 00:03:46,000 --> 00:03:51,000 And now look, if I'll enter my player into the regular trap. 64 00:03:51,000 --> 00:03:52,000 I'll see. 65 00:03:52,000 --> 00:03:54,000 Message damaged by regular trap. 66 00:03:54,000 --> 00:03:55,000 All right. 67 00:03:55,000 --> 00:03:56,000 Let's try again. 68 00:04:01,000 --> 00:04:03,000 And this time I'll use moving trap. 69 00:04:05,000 --> 00:04:05,000 And wait. 70 00:04:05,000 --> 00:04:09,000 We need on trigger enter right circle Collider. 71 00:04:10,000 --> 00:04:11,000 Is trigger. 72 00:04:11,000 --> 00:04:12,000 So. 73 00:04:12,000 --> 00:04:13,000 Boom. 74 00:04:13,000 --> 00:04:14,000 Damaged by regular chop. 75 00:04:14,000 --> 00:04:16,000 And damaged by moving. 76 00:04:16,000 --> 00:04:16,000 Chop. 77 00:04:16,000 --> 00:04:17,000 So you got the idea. 78 00:04:17,000 --> 00:04:19,000 Now let's actually give it a collider. 79 00:04:20,000 --> 00:04:23,000 And I want to make it a bit smaller than it should be. 80 00:04:25,000 --> 00:04:27,000 Again, just to make it fair game. 81 00:04:27,000 --> 00:04:28,000 Yeah. 82 00:04:30,000 --> 00:04:31,000 And let's go back. 83 00:04:31,000 --> 00:04:33,000 So now you have the idea how it works. 84 00:04:35,000 --> 00:04:37,000 Can I delete the bug from here? 85 00:04:41,000 --> 00:04:43,000 And in the moving trap, I'm going to delete the. 86 00:04:43,000 --> 00:04:46,000 And now we're going to make functionality of the moving trap. 87 00:04:46,000 --> 00:04:47,000 Exactly. 88 00:04:47,000 --> 00:04:48,000 How are we going to move it? 89 00:04:48,000 --> 00:04:49,000 Very simple. 90 00:04:49,000 --> 00:04:51,000 First, we need a speed. 91 00:04:51,000 --> 00:04:56,000 How fast is going to move So serialize field private float speed. 92 00:04:58,000 --> 00:04:59,000 Also in the rotated crop. 93 00:04:59,000 --> 00:05:00,000 So it looks pretty. 94 00:05:00,000 --> 00:05:05,000 So I'm going to create serialize field, private float rotation speed. 95 00:05:06,000 --> 00:05:09,000 And now we need a position where are we going to move to? 96 00:05:09,000 --> 00:05:14,000 So the destination for us for this trap, how are we going to create it? 97 00:05:14,000 --> 00:05:22,000 With the help of transform, serialize, field, private transform, move point. 98 00:05:22,000 --> 00:05:23,000 Right. 99 00:05:23,000 --> 00:05:32,000 So if you would like to have a couple of move points, you could do like move .1. to 1.3, but that 100 00:05:32,000 --> 00:05:34,000 is actually a wrong way to do that. 101 00:05:34,000 --> 00:05:37,000 What you can do is use an array. 102 00:05:38,000 --> 00:05:46,000 So after type of variable, you just put square brackets and now it will be an array of transforms. 103 00:05:46,000 --> 00:05:47,000 Let me show you. 104 00:05:48,000 --> 00:05:51,000 We actually did this with a little part, right? 105 00:05:51,000 --> 00:05:54,000 I forgot, so I didn't have to really explain again. 106 00:05:54,000 --> 00:05:56,000 So now I have more endpoints. 107 00:05:56,000 --> 00:05:56,000 Zero. 108 00:05:57,000 --> 00:06:00,000 If I'll create a couple of them move point. 109 00:06:01,000 --> 00:06:03,000 I'll give it the gizmos over a dot. 110 00:06:04,000 --> 00:06:06,000 I'll duplicate it a couple of times. 111 00:06:06,000 --> 00:06:07,000 And now. 112 00:06:08,000 --> 00:06:11,000 One, two, three. 113 00:06:12,000 --> 00:06:15,000 I move points and I can get access to that move points with a number. 114 00:06:15,000 --> 00:06:24,000 So I'm going to create an int for the number private int and I'll just give it a name of an I. 115 00:06:24,000 --> 00:06:30,000 And then in the update I'm going to move transform of my trap with the help of Vector Tree move towards. 116 00:06:30,000 --> 00:06:32,000 So we do this transform position. 117 00:06:33,000 --> 00:06:35,000 Equals to vector three. 118 00:06:35,000 --> 00:06:36,000 Move towards. 119 00:06:36,000 --> 00:06:42,000 And it allows us to move from current position to target position by choosing vector three. 120 00:06:42,000 --> 00:06:48,000 We're going to choose from current position, transform position to move point with the I. 121 00:06:50,000 --> 00:06:51,000 That position. 122 00:06:52,000 --> 00:06:53,000 And now we need to choose speed. 123 00:06:53,000 --> 00:06:56,000 And I want to type speed multiplied by time. 124 00:06:57,000 --> 00:06:59,000 Don at the time. 125 00:06:59,000 --> 00:07:03,000 So it will move, not accordingly to the frame update, but accordingly to time the delta time. 126 00:07:03,000 --> 00:07:05,000 Let's go and see this first. 127 00:07:06,000 --> 00:07:10,000 So currently my eye is zero by default, so it's going to choose zero. 128 00:07:10,000 --> 00:07:11,000 Move point. 129 00:07:11,000 --> 00:07:12,000 First one. 130 00:07:13,000 --> 00:07:15,000 Let me take it and move it away. 131 00:07:16,000 --> 00:07:17,000 Just like this. 132 00:07:17,000 --> 00:07:20,000 I'm going to set speed for. 133 00:07:20,000 --> 00:07:21,000 I'm going to play mode. 134 00:07:23,000 --> 00:07:25,000 We can see it's moving there. 135 00:07:27,000 --> 00:07:27,000 Let's click. 136 00:07:27,000 --> 00:07:28,000 This is Trigger then. 137 00:07:28,000 --> 00:07:29,000 Now it's not here. 138 00:07:30,000 --> 00:07:38,000 Now how we could change that, how we could make it move between points, we could just change the number 139 00:07:38,000 --> 00:07:39,000 of the AI. 140 00:07:39,000 --> 00:07:47,000 So let's check this if vector to the distance and it allows us to check distance between two objects. 141 00:07:47,000 --> 00:07:57,000 So if distance between transform position and move point with the eye position is less than let's try 142 00:07:57,000 --> 00:08:02,000 point 25 F, then we're going to do a plus plus. 143 00:08:02,000 --> 00:08:06,000 So we're going to do plus one and we're going to check if I. 144 00:08:07,000 --> 00:08:12,000 Is bigger than 1.. lengths. 145 00:08:13,000 --> 00:08:17,000 Then we're going to do I equals to zero so it won't exceed the limit. 146 00:08:17,000 --> 00:08:18,000 Let's go and see that. 147 00:08:19,000 --> 00:08:23,000 I'm going to place this more points in the different places just like that. 148 00:08:28,000 --> 00:08:30,000 Boom cycling between them. 149 00:08:30,000 --> 00:08:31,000 Oh, an exit bounce. 150 00:08:31,000 --> 00:08:32,000 One, three. 151 00:08:33,000 --> 00:08:34,000 Wait a second. 152 00:08:34,000 --> 00:08:34,000 Why is that? 153 00:08:35,000 --> 00:08:36,000 Oh, yeah. 154 00:08:36,000 --> 00:08:38,000 Let's put bigger or equals here. 155 00:08:38,000 --> 00:08:38,000 Yeah. 156 00:08:42,000 --> 00:08:44,000 And cycling between. 157 00:08:45,000 --> 00:08:45,000 Very cool. 158 00:08:46,000 --> 00:08:48,000 Now I want to make it rotate. 159 00:08:49,000 --> 00:08:54,000 How we could do a rotation, we could change Z with the time on Delta time, so our rotation on the 160 00:08:54,000 --> 00:08:58,000 Z would be like that and it will behave like it's rotating. 161 00:08:59,000 --> 00:09:01,000 Let's put zero here. 162 00:09:01,000 --> 00:09:03,000 Go back to script. 163 00:09:03,000 --> 00:09:05,000 Over here in the update. 164 00:09:05,000 --> 00:09:09,000 We can check if our position is bigger than destination on the X. 165 00:09:09,000 --> 00:09:17,000 If transform position that x is bigger than move point a dot position means. 166 00:09:17,000 --> 00:09:22,000 We are from the left of the moving point means we move into the right. 167 00:09:22,000 --> 00:09:24,000 And actually, it doesn't matter. 168 00:09:24,000 --> 00:09:25,000 We can just rotate to any side. 169 00:09:25,000 --> 00:09:26,000 It will look pretty. 170 00:09:26,000 --> 00:09:27,000 Transform. 171 00:09:27,000 --> 00:09:28,000 Rotate. 172 00:09:29,000 --> 00:09:31,000 And we need an oiler here. 173 00:09:31,000 --> 00:09:34,000 I'll just do a new vector 300. 174 00:09:34,000 --> 00:09:39,000 And for the Z, it's going to be rotation speed multiplied by time, dot, delta time. 175 00:09:41,000 --> 00:09:50,000 Position that X and let's do another one else transform rotate new vector 300 minus. 176 00:09:50,000 --> 00:09:55,000 So it's going to be another side rotation speed multiplied by time to time. 177 00:09:55,000 --> 00:09:59,000 Let's save it all and go set some rotation speed. 178 00:10:00,000 --> 00:10:01,000 Let's try to 100. 179 00:10:04,000 --> 00:10:04,000 Look. 180 00:10:05,000 --> 00:10:07,000 Let's see the unemployment actually. 181 00:10:08,000 --> 00:10:10,000 Can I move them here? 182 00:10:11,000 --> 00:10:12,000 Oh, my God. 183 00:10:13,000 --> 00:10:14,000 It looks pretty, right? 184 00:10:15,000 --> 00:10:16,000 I like it. 185 00:10:16,000 --> 00:10:18,000 You can place as many move points as you like. 186 00:10:18,000 --> 00:10:23,000 What I want to do here is kind of inconvenient to drag four objects together. 187 00:10:23,000 --> 00:10:26,000 What I want to do here is to create an empty pattern for them. 188 00:10:27,000 --> 00:10:30,000 And I'm going to name it as moving up again. 189 00:10:32,000 --> 00:10:35,000 So now they are all together and I can move them like this. 190 00:10:35,000 --> 00:10:38,000 I also want to delete one of the move points. 191 00:10:38,000 --> 00:10:39,000 I don't like it. 192 00:10:40,000 --> 00:10:42,000 So just two of them. 193 00:10:43,000 --> 00:10:47,000 And I'll place one I know here and one here. 194 00:10:48,000 --> 00:10:49,000 Kind of last touch here. 195 00:10:49,000 --> 00:10:56,000 I want to set position of the trap equals to first move point so it will be spawned on the move point. 196 00:10:57,000 --> 00:11:00,000 And it will look pretty and kind of predictable. 197 00:11:00,000 --> 00:11:09,000 So just in the start, I can return just one line of code transform position equals to move .0. position. 198 00:11:11,000 --> 00:11:14,000 So now, no matter what, it's going to be found at first position. 199 00:11:15,000 --> 00:11:16,000 Let's go and test. 200 00:11:16,000 --> 00:11:17,000 First point. 201 00:11:17,000 --> 00:11:18,000 Second point. 202 00:11:18,000 --> 00:11:19,000 And. 203 00:11:20,000 --> 00:11:20,000 Yeah. 204 00:11:22,000 --> 00:11:25,000 But it's not necessarily honestly, just something I want to do. 205 00:11:25,000 --> 00:11:26,000 All right. 206 00:11:26,000 --> 00:11:27,000 Good enough. 207 00:11:27,000 --> 00:11:29,000 I think it takes long to make this video. 208 00:11:29,000 --> 00:11:30,000 So let's go to prefab. 209 00:11:30,000 --> 00:11:33,000 I kinda carry the weight by explanation of different points. 210 00:11:34,000 --> 00:11:39,000 Let's just drag moving track to the prefab folder and we almost there in the next video, we're going 211 00:11:39,000 --> 00:11:42,000 to change colors of the platform and then we can build level parts. 212 00:11:42,000 --> 00:11:42,000 See you there.