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These are the user uploaded subtitles that are being translated: 1 1 00:00:00,000 --> 00:00:04,105 [MUSIC] 2 2 00:00:04,105 --> 00:00:07,438 In this video, we're gonna shift the movement speed and 3 3 00:00:07,438 --> 00:00:11,395 the wave configuration that has its waypoints in it off the enemy and 4 4 00:00:11,395 --> 00:00:16,250 have all that information within the enemy spawner and the waves themselves. 5 5 00:00:16,250 --> 00:00:20,490 So the enemy is clever in knowing what path to follow, without us having to go 6 6 00:00:20,490 --> 00:00:24,540 and link all of those things onto a particular enemy prefab itself. 7 7 00:00:24,540 --> 00:00:25,230 Why do this? 8 8 00:00:25,230 --> 00:00:26,010 Well this is so 9 9 00:00:26,010 --> 00:00:29,520 we can have this particular enemy come in at different speeds and 10 10 00:00:29,520 --> 00:00:33,944 go on different paths and not always have to go on the same path every single time. 11 11 00:00:33,944 --> 00:00:36,100 I think that's gonna give us a lot more creativity. 12 12 00:00:36,100 --> 00:00:41,200 So what we'll start off with is jumping over into the enemy pathing script. 13 13 00:00:41,200 --> 00:00:43,130 We haven't used that for a lecture or two. 14 14 00:00:43,130 --> 00:00:45,078 Enemy pathing is what we will be looking at. 15 15 00:00:45,078 --> 00:00:48,952 And I'm gonna start here by highlighting the fact that we need to or 16 16 00:00:48,952 --> 00:00:51,592 we can remove some of our SerializedFields. 17 17 00:00:51,592 --> 00:00:54,412 So we still need to have our WaveConfig variable but 18 18 00:00:54,412 --> 00:00:56,452 we don't need access to it anymore. 19 19 00:00:56,452 --> 00:00:59,536 So that will no longer show up on the enemy in the inspector. 20 20 00:00:59,536 --> 00:01:02,217 And likewise, this float moveSpeed, 21 21 00:01:02,217 --> 00:01:07,100 we're going to remove completely and replace it with something else. 22 22 00:01:07,100 --> 00:01:08,240 And what'll we replace it with? 23 23 00:01:08,240 --> 00:01:10,270 Well, here's a little challenge for you. 24 24 00:01:10,270 --> 00:01:14,560 I want you to get the speed for the enemies from the WaveConfig data 25 25 00:01:14,560 --> 00:01:17,248 instead of using moveSpeed, which I just deleted. 26 26 00:01:17,248 --> 00:01:21,220 So find where moveSpeed is, or in my case was, and 27 27 00:01:21,220 --> 00:01:27,440 instead of using that moveSpeed variable, get the information from the WaveConfig. 28 28 00:01:27,440 --> 00:01:29,010 Okay, so there's your challenge. 29 29 00:01:29,010 --> 00:01:30,558 Pause the video and jump into that now. 30 30 00:01:33,073 --> 00:01:33,680 Welcome back. 31 31 00:01:33,680 --> 00:01:35,460 Hopefully you are taking on the challenges. 32 32 00:01:35,460 --> 00:01:39,110 They are the absolute number one best way to learn. 33 33 00:01:39,110 --> 00:01:41,864 That's why you're taking this course and 34 34 00:01:41,864 --> 00:01:45,315 not just watching along some random YouTube videos. 35 35 00:01:45,315 --> 00:01:48,782 This is the process of learning cuz you're taking on the challenges, 36 36 00:01:48,782 --> 00:01:50,321 I hope as the best way to learn. 37 37 00:01:50,321 --> 00:01:53,849 So you can see now cuz I've delayed moveSpeed, got the squiggly red line. 38 38 00:01:53,849 --> 00:02:00,170 Instead of moveSpeed, we need to access our waveConfig., what's its gonna be? 39 39 00:02:00,170 --> 00:02:03,380 GetMoveSpeed, it's highlighted already, GetMoveSpeed and 40 40 00:02:03,380 --> 00:02:06,300 then we need our parentheses cuz it is a method. 41 41 00:02:06,300 --> 00:02:11,324 So, now it's going to go into our waveConfig, get the particular 42 42 00:02:11,324 --> 00:02:17,076 movement speed that we've set for this wave and then use that for our enemy. 43 43 00:02:17,076 --> 00:02:21,423 Now, in terms of the wave configuration, to know which wave to follow, so 44 44 00:02:21,423 --> 00:02:24,117 that we don't have to connect it up manually. 45 45 00:02:24,117 --> 00:02:28,738 We're going to add ourselves a new public method that, in here, 46 46 00:02:28,738 --> 00:02:33,290 has the information that we feed into our particular waypoint. 47 47 00:02:33,290 --> 00:02:37,669 So you can see this is following our path, we need to know which path to follow. 48 48 00:02:37,669 --> 00:02:42,168 And to do that, we want something else to be telling us that from another script. 49 49 00:02:42,168 --> 00:02:46,198 So what we'll do is we'll create ourselves a public method, 50 50 00:02:46,198 --> 00:02:50,325 say public void, set, we'll call this SetWaveConfig. 51 51 00:02:50,325 --> 00:02:53,432 Now we've been doing, I'm just going to leave that midway through, 52 52 00:02:53,432 --> 00:02:55,075 just remind you in our waveConfigs. 53 53 00:02:55,075 --> 00:02:59,554 We've been doing these get methods where we say hey, return me a value and 54 54 00:02:59,554 --> 00:03:02,961 that value we've established in our waveConfig file. 55 55 00:03:02,961 --> 00:03:07,528 In this instance, we're gonna say hey, set the particular thing for me. 56 56 00:03:07,528 --> 00:03:12,042 So it's a public method that something else can be feeding into 57 57 00:03:12,042 --> 00:03:13,922 a value into this script. 58 58 00:03:13,922 --> 00:03:16,282 So it's a set method, if you will. 59 59 00:03:16,282 --> 00:03:20,332 And in here, we put inside the parentheses, what is it? 60 60 00:03:20,332 --> 00:03:23,789 What's the information that we need to have when this is called? 61 61 00:03:23,789 --> 00:03:28,634 So as soon as we have parameters in our signature here, SetWaveConfig. 62 62 00:03:28,634 --> 00:03:33,236 As soon as we put something in here and I'm gonna put in waveConfig, so it's of 63 63 00:03:33,236 --> 00:03:37,862 type waveConfig, we'll call it waveConfig cuz that's what we need to know. 64 64 00:03:37,862 --> 00:03:42,033 We want to know what is the waveConfig that we should be following for 65 65 00:03:42,033 --> 00:03:44,608 this current enemy on this current path. 66 66 00:03:44,608 --> 00:03:48,862 And so, when anything calls this public method, 67 67 00:03:48,862 --> 00:03:52,724 it has to also tell us what the waveConfig is. 68 68 00:03:52,724 --> 00:03:58,578 If it doesn't do that, if in another script if we just say SetWaveConfig and 69 69 00:03:58,578 --> 00:04:01,601 open close parentheses, semicolon. 70 70 00:04:01,601 --> 00:04:02,771 If we just do that, 71 71 00:04:02,771 --> 00:04:07,600 then we're going to get an error because we've constructed our method here, 72 72 00:04:07,600 --> 00:04:12,600 saying you have to give me, thou shall give me the waveConfig information. 73 73 00:04:12,600 --> 00:04:15,750 So when we are calling our method from another place, which we'll do in just 74 74 00:04:15,750 --> 00:04:19,740 a moment, we actually have to put in there what the waveConfig is. 75 75 00:04:19,740 --> 00:04:24,160 So that this waveConfig is getting fed into here. 76 76 00:04:24,160 --> 00:04:27,050 So we know that this becomes a container for 77 77 00:04:27,050 --> 00:04:31,410 whatever it was that this waveConfig is in the other file. 78 78 00:04:31,410 --> 00:04:34,100 Okay, just going nice and slow on that because I know it puzzled me for 79 79 00:04:34,100 --> 00:04:37,760 a long time in terms of what's this stuff inside the brackets? 80 80 00:04:37,760 --> 00:04:42,230 Well the main thing to know is that we are wanting information from 81 81 00:04:42,230 --> 00:04:43,280 whoever called this. 82 82 00:04:43,280 --> 00:04:46,500 Now, this part is going to blow your mind if you're not paying attention. 83 83 00:04:46,500 --> 00:04:48,880 So, get ready to pay some attention. 84 84 00:04:48,880 --> 00:04:54,397 What we need to do here is to set the waveConfig variable in this class, 85 85 00:04:54,397 --> 00:04:58,336 which is up here, we've set this as waveConfig. 86 86 00:04:58,336 --> 00:05:01,896 And we're using this waveConfig variable in a number of spots down here to say 87 87 00:05:01,896 --> 00:05:03,334 okay, what I'm I following? 88 88 00:05:03,334 --> 00:05:06,927 What I'm I heading towards in terms of my waveConfig? 89 89 00:05:06,927 --> 00:05:12,445 But then we also this concept of the waveConfig local variable to this method, 90 90 00:05:12,445 --> 00:05:14,630 which is being passed back in. 91 91 00:05:14,630 --> 00:05:19,180 Now we could call this something different like waveConfigToSet. 92 92 00:05:19,180 --> 00:05:21,770 We could do that but at the end of the day, it's a waveConfig. 93 93 00:05:21,770 --> 00:05:27,048 So we're gonna use the same word, waveConfig but it has two slightly 94 94 00:05:27,048 --> 00:05:32,056 different meanings or they're slightly different variables. 95 95 00:05:32,056 --> 00:05:37,515 So what I'm going to say in here is this.Wave, 96 96 00:05:37,515 --> 00:05:43,799 sorry, little w, waveConfig = waveConfig, okay? 97 97 00:05:43,799 --> 00:05:45,920 And again, I'm gonna go slow on this so it's super duper clear, 98 98 00:05:45,920 --> 00:05:47,362 I'll just get rid of some of my white space. 99 99 00:05:47,362 --> 00:05:51,043 Super clear, when we say this in front of waveConfig, 100 100 00:05:51,043 --> 00:05:55,374 we're referring to this in the class, the instance variable. 101 101 00:05:55,374 --> 00:06:00,019 So at the top here, this variable can be used throughout our entire class, 102 102 00:06:00,019 --> 00:06:01,432 our entire instance. 103 103 00:06:01,432 --> 00:06:06,358 Therefore, it is this, this is the thing that we're on, this is the script, 104 104 00:06:06,358 --> 00:06:08,085 the class, the document. 105 105 00:06:08,085 --> 00:06:11,186 When we use this, referring to this whole thing. 106 106 00:06:11,186 --> 00:06:16,492 So this.waveConfig is referring to this particular waveConfig and 107 107 00:06:16,492 --> 00:06:21,614 then it equals the waveConfig that we receive when something calls 108 108 00:06:21,614 --> 00:06:26,744 the public method SetWaveConfig and passes to us the waveConfig. 109 109 00:06:26,744 --> 00:06:29,566 Okay, I'm gonna save up this and then go to the spot where we are. 110 110 00:06:29,566 --> 00:06:32,133 I'm going to call the waveConfig and I'll show you what I mean. 111 111 00:06:32,133 --> 00:06:37,670 So over into EnemySpawner, instead of just instantiating, 112 112 00:06:37,670 --> 00:06:42,779 we're gonna create a new variable, which we'll say var 113 113 00:06:42,779 --> 00:06:48,750 newEnemy = Instantiate and then what and where and the rotation. 114 114 00:06:48,750 --> 00:06:52,861 So now we're storing this new enemy each time we create an enemy, 115 115 00:06:52,861 --> 00:06:54,216 it will be newEnemy. 116 116 00:06:54,216 --> 00:06:57,494 And that allows us to grab the component, so 117 117 00:06:57,494 --> 00:07:02,457 if we give ourselves a line between the end of our instantiation and 118 118 00:07:02,457 --> 00:07:06,140 before the yield, we'll type in newEnemy. 119 119 00:07:06,140 --> 00:07:09,370 So, we're referring to this newEnemy we've just created dot. 120 120 00:07:09,370 --> 00:07:11,867 So there's something within the newEnemy that we're looking for. 121 121 00:07:11,867 --> 00:07:16,744 GetComponent, With our angle braces cuz 122 122 00:07:16,744 --> 00:07:20,823 when we create this game object, we're looking for a particular thing. 123 123 00:07:20,823 --> 00:07:24,097 The component we're looking for is the enemy pathing. 124 124 00:07:24,097 --> 00:07:25,744 So that's the enemy pathing script. 125 125 00:07:25,744 --> 00:07:29,674 Then when we have a look at our enemy, you can see, if I find an enemy, you can see 126 126 00:07:29,674 --> 00:07:33,550 it has a script and the script is also a component that's sitting on the enemy, 127 127 00:07:33,550 --> 00:07:36,045 that's how we can access it using getComponent. 128 128 00:07:36,045 --> 00:07:39,087 Then we need to add our parentheses after 129 129 00:07:39,087 --> 00:07:43,209 enemy pathing.SetWaveConfig that we just created. 130 130 00:07:43,209 --> 00:07:44,696 And what do we need to feed into that? 131 131 00:07:44,696 --> 00:07:47,665 We need to feed in, you guessed it, the waveConfig. 132 132 00:07:47,665 --> 00:07:50,229 And which wave and then put a semicolon on the end. 133 133 00:07:50,229 --> 00:07:51,944 Which waveConfig they're referring to? 134 134 00:07:51,944 --> 00:07:55,713 It's the waveConfig that's locally within the SpawnAllEnemies. 135 135 00:07:55,713 --> 00:08:00,069 So it knows, this is the particular wave that I'm referring to. 136 136 00:08:00,069 --> 00:08:04,014 And then when we call this method, it's going to pass in this waveConfig 137 137 00:08:04,014 --> 00:08:08,230 that we're getting from here into our enemy pathing because it required us. 138 138 00:08:08,230 --> 00:08:12,391 It said, you have to give me this information when you 139 139 00:08:12,391 --> 00:08:17,290 are calling SetWaveConfig and I'm gonna use this information 140 140 00:08:17,290 --> 00:08:21,367 to define my own waveConfig in my particular class. 141 141 00:08:21,367 --> 00:08:25,956 Okay, let's save all of these, I've jumped back over into Unity, click on our enemy. 142 142 00:08:25,956 --> 00:08:27,845 Those extra bits and pieces are no longer there. 143 143 00:08:27,845 --> 00:08:29,054 Let's go find our waves. 144 144 00:08:29,054 --> 00:08:30,781 Click on Wave 1. 145 145 00:08:30,781 --> 00:08:35,572 I'm gonna change the movement speed to 8 and make sure this works. 146 146 00:08:35,572 --> 00:08:36,317 Path zero, which one's path zero? 147 147 00:08:36,317 --> 00:08:37,704 That's that one. 148 148 00:08:37,704 --> 00:08:40,413 Okay, I'll change it to path one for now, 149 149 00:08:40,413 --> 00:08:45,010 on wave one just to check that it works and then click on play. 150 150 00:08:45,010 --> 00:08:47,215 We should have it coming from left to right, is it? 151 151 00:08:47,215 --> 00:08:48,010 Or right to left? 152 152 00:08:48,010 --> 00:08:49,364 Okay and they're going nice and fast, 153 153 00:08:49,364 --> 00:08:51,940 it looks like they're definitely going eight amount of speed. 154 154 00:08:51,940 --> 00:08:55,722 If I was to just change it over to the other path, to check this all works, 155 155 00:08:55,722 --> 00:09:00,064 path zero and make the movement speed, I don't know, 20 just to be ridiculous. 156 156 00:09:00,064 --> 00:09:06,620 Click on play and it should go zing and spawn, one, two, three, four, five. 157 157 00:09:06,620 --> 00:09:07,710 Excellent, okay, there we go. 158 158 00:09:07,710 --> 00:09:12,480 So now we've got more of our information stored on our wave. 159 159 00:09:12,480 --> 00:09:15,750 The value in doing this is now we can create waves where we mix and 160 160 00:09:15,750 --> 00:09:17,530 match the speed, the paths and 161 161 00:09:17,530 --> 00:09:21,570 the enemies to give us a whole ton of variation within our game. 162 162 00:09:21,570 --> 00:09:22,480 So, great work. 163 163 00:09:22,480 --> 00:09:25,580 In the next video, we'll continue on with spawning more waves. 16730