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These are the user uploaded subtitles that are being translated: 1 1 00:00:00,000 --> 00:00:03,917 [MUSIC] 2 2 00:00:03,917 --> 00:00:08,083 Hello again, in this video, we're gonna do a little bit of tidying up of our code, 3 3 00:00:08,083 --> 00:00:12,428 and we're gonna implement a death particle effect when the attackers are smashed into 4 4 00:00:12,428 --> 00:00:13,040 oblivion. 5 5 00:00:13,040 --> 00:00:16,510 So let's start by opening our projectile script. 6 6 00:00:16,510 --> 00:00:19,660 We can see in here that we've got a variable for health, and 7 7 00:00:19,660 --> 00:00:21,430 we've got our health dealing damage. 8 8 00:00:21,430 --> 00:00:26,970 What I'm going to do is create another variable that allows us to have 9 9 00:00:26,970 --> 00:00:31,110 a mechanism to say what is the health, sorry, what is the attacker, I was looking 10 10 00:00:31,110 --> 00:00:34,540 at the one above, we've already got the health, Rick, what are you thinking? 11 11 00:00:34,540 --> 00:00:38,550 We want to be able to reference the attacker, and 12 12 00:00:38,550 --> 00:00:42,460 that's going to equal otherCollider.GetComponent< >, 13 13 00:00:42,460 --> 00:00:46,350 and what do we put within our angle brackets here? 14 14 00:00:46,350 --> 00:00:48,688 We put <Attacker>. 15 15 00:00:48,688 --> 00:00:49,738 You guessed it. 16 16 00:00:49,738 --> 00:00:50,860 Hopefully you guessed it. 17 17 00:00:50,860 --> 00:00:54,104 Yelling out at the screen randomly, attacker. 18 18 00:00:54,104 --> 00:00:58,793 Okay, so now that we have those two I'm gonna create an if statement 19 19 00:00:58,793 --> 00:01:03,073 here where I say if(attacker &&), so double ampersand, 20 20 00:01:03,073 --> 00:01:07,490 that's what that thingy is, the and sign is an ampersand. 21 21 00:01:07,490 --> 00:01:12,688 So &&, say that fast ten times, health. 22 22 00:01:12,688 --> 00:01:16,425 So that's saying that when we're colliding with something, 23 23 00:01:16,425 --> 00:01:20,442 if it has the attacker component, and it has the health component, 24 24 00:01:20,442 --> 00:01:23,767 if both of those are true, then we want to do something. 25 25 00:01:23,767 --> 00:01:24,930 What is it that we wanna do? 26 26 00:01:24,930 --> 00:01:28,470 Well, we want to do our health.DealDamage. 27 27 00:01:28,470 --> 00:01:33,359 That would be the first thing, and then also, I think what we want to do is 28 28 00:01:33,359 --> 00:01:37,298 destroy the projectile so that it's not hanging around. 29 29 00:01:37,298 --> 00:01:39,998 You could have it that when your enemy shoots, 30 30 00:01:39,998 --> 00:01:44,293 you have a slow projectile that goes through and does damage to everyone, 31 31 00:01:44,293 --> 00:01:48,378 one of those like rockets that cannot be destroyed, but for us, or for 32 32 00:01:48,378 --> 00:01:52,980 the zucchini I want it to hit and then to go away, I think that makes more sense. 33 33 00:01:52,980 --> 00:01:57,320 So, what do we type in here if we want to destroy the projectile? 34 34 00:01:57,320 --> 00:01:59,910 We type in Destroy(gameObject). 35 35 00:02:02,150 --> 00:02:05,026 So destroy our cell, save that up. 36 36 00:02:05,026 --> 00:02:07,412 So now, it should only be colliding with the correct things. 37 37 00:02:07,412 --> 00:02:11,164 We probably won't see much of a change, cuz it's not passing through any of 38 38 00:02:11,164 --> 00:02:15,208 the incorrect things, but we know that if there was another cactus in front of it, 39 39 00:02:15,208 --> 00:02:17,219 then it wouldn't bump into that point. 40 40 00:02:17,219 --> 00:02:21,510 Boink, there we go, we hit once, and we hit twice, and it's disappearing. 41 41 00:02:21,510 --> 00:02:22,870 Excelente! 42 42 00:02:22,870 --> 00:02:27,358 The moment of disappearing where the attacker is killed is a little bit bland, 43 43 00:02:27,358 --> 00:02:31,647 so we're gonna spruce that up a little bit by putting in a particle effect. 44 44 00:02:31,647 --> 00:02:36,178 And this where I've got a challenge for you is to create a nifty 45 45 00:02:36,178 --> 00:02:40,984 particle effect and to trigger that when the attacker is killed. 46 46 00:02:40,984 --> 00:02:42,743 So this is code that we've done before. 47 47 00:02:42,743 --> 00:02:47,114 It should be pretty straightforward for you to find where to put that code and 48 48 00:02:47,114 --> 00:02:50,938 say, how do I trigger this particle effect so that it happens, and 49 49 00:02:50,938 --> 00:02:55,677 if you don't wanna create a particle effect, then I've got one that I'm using. 50 50 00:02:55,677 --> 00:02:59,213 Just one of our other projects in this course that I can give to you as 51 51 00:02:59,213 --> 00:03:01,243 downloadable against this lecture. 52 52 00:03:01,243 --> 00:03:06,527 So you can grab that, if you like, as a asset pack or you can make your own. 53 53 00:03:06,527 --> 00:03:08,320 So jump in, take on that challenge. 54 54 00:03:08,320 --> 00:03:10,211 I'll see you back here when you've given it your best shot. 55 55 00:03:12,490 --> 00:03:14,474 Okay, let's go and grab that asset. 56 56 00:03:14,474 --> 00:03:17,110 So I've got ExplosionVFX. 57 57 00:03:17,110 --> 00:03:21,977 When I drag it in anywhere into my Assets folder it asks me whether I'd like 58 58 00:03:21,977 --> 00:03:22,768 to import. 59 59 00:03:22,768 --> 00:03:26,038 Yes, I import, and it brings in the folder structure as well, so 60 60 00:03:26,038 --> 00:03:29,010 I've got this VFX folder down here with the Explosion VFX, 61 61 00:03:29,010 --> 00:03:32,890 [LAUGH] which you might recognize from one of the other sections of the course. 62 62 00:03:32,890 --> 00:03:33,809 I've just gone and grabbed it. 63 63 00:03:33,809 --> 00:03:37,634 You can take plenty of time to finesse with your particle effect but 64 64 00:03:37,634 --> 00:03:41,030 I'm not gonna go through that in too much detail. 65 65 00:03:41,030 --> 00:03:44,544 I just wanted to get something that we could use for now. 66 66 00:03:44,544 --> 00:03:45,941 Let's just have a look, make sure it works. 67 67 00:03:45,941 --> 00:03:46,624 Boink, there we go. 68 68 00:03:46,624 --> 00:03:48,720 It's kind of stars going a bit crazy. 69 69 00:03:48,720 --> 00:03:49,559 Good enough. 70 70 00:03:49,559 --> 00:03:51,042 Job done. 71 71 00:03:51,042 --> 00:03:58,120 Okay, so let's go over into our health script. 72 72 00:03:58,120 --> 00:04:02,200 Above Destroy, we need a notion of calling a method where 73 73 00:04:02,200 --> 00:04:07,196 we're going to say TriggerDeathVFX(). 74 74 00:04:07,196 --> 00:04:11,694 Okay, we wanna trigger the VFX and then we want to destroy it ourselves, 75 75 00:04:11,694 --> 00:04:14,571 in this case it's destroying the lizard, and 76 76 00:04:14,571 --> 00:04:18,578 we want to make sure that the DeathVFX isn't destroyed as well. 77 77 00:04:18,578 --> 00:04:20,410 So that's a little bit trickier. 78 78 00:04:20,410 --> 00:04:25,510 This is why we need to instantiate, rather than just playing a VFX, 79 79 00:04:25,510 --> 00:04:29,990 rather than just playing a particle effect on, where's one of my lizards here? 80 80 00:04:29,990 --> 00:04:34,280 Prefab > Lizard, drag them into the scene so we put him there. 81 81 00:04:34,280 --> 00:04:39,420 So we could have as a child, we could have a particle effect under the lizard. 82 82 00:04:39,420 --> 00:04:42,770 But then when we destroy the lizard, we're also destroying the child, 83 83 00:04:42,770 --> 00:04:44,610 the particle effect underneath that. 84 84 00:04:44,610 --> 00:04:52,633 So we're create ourselves a private void TriggerDeathVFX. 85 85 00:04:52,633 --> 00:04:53,783 What do we want to do in here? 86 86 00:04:53,783 --> 00:04:57,931 Well, first of all I'm gonna say, if we don't have any VFX, then just return, 87 87 00:04:57,931 --> 00:05:00,433 just in case we forget to put something on there, 88 88 00:05:00,433 --> 00:05:03,240 we don't want something to break where it says, hey, 89 89 00:05:03,240 --> 00:05:06,803 trigger a particular particle effect and we've kind of forgotten. 90 90 00:05:06,803 --> 00:05:09,026 I know that you would never forget to do that, but 91 91 00:05:09,026 --> 00:05:10,825 I forget to do these things sometimes. 92 92 00:05:10,825 --> 00:05:13,810 So say, if there is no, what are we going to call this? 93 93 00:05:13,810 --> 00:05:18,482 We'll call this deathvfx, we're going to make that variable in a moment, 94 94 00:05:18,482 --> 00:05:19,655 then just return. 95 95 00:05:19,655 --> 00:05:22,800 Just go about your business, don't worry, don'tdon't stress about it. 96 96 00:05:22,800 --> 00:05:24,566 Unity, everything will be fine. 97 97 00:05:24,566 --> 00:05:28,269 So let's go and serialize ourselves a variable, 98 98 00:05:28,269 --> 00:05:32,591 [SerializeField] GameObject, cuz we want to be able to 99 99 00:05:32,591 --> 00:05:37,371 reference it as a GameObject in a moment, and it's a deathVFX. 100 100 00:05:37,371 --> 00:05:42,239 Okay, so now we have this notion of we're gonna drag in our deathVFX, 101 101 00:05:42,239 --> 00:05:46,390 that we just brought in, the explosion thing I had before. 102 102 00:05:46,390 --> 00:05:49,685 If it doesn't exist, if you don't have one of these then don't worry about it, 103 103 00:05:49,685 --> 00:05:50,369 just return it. 104 104 00:05:50,369 --> 00:05:51,860 Otherwise, what are we gonna do? 105 105 00:05:51,860 --> 00:05:55,324 Well, we'll start off just by saying, instantiate. 106 106 00:05:55,324 --> 00:05:58,590 Instantiate, what do we need to do here? 107 107 00:05:58,590 --> 00:06:00,660 Well, we're gonna instantiate(deathVFX, ). 108 108 00:06:00,660 --> 00:06:02,970 We've done this a bunch of times when instantiating. 109 109 00:06:02,970 --> 00:06:04,717 It should be pretty natural by now. 110 110 00:06:04,717 --> 00:06:05,790 And then where is it? 111 111 00:06:05,790 --> 00:06:12,630 It's transform.position. 112 112 00:06:12,630 --> 00:06:13,772 Had to think for a moment there. 113 113 00:06:13,772 --> 00:06:19,511 And then we can do transform.rotation, or we can do the quotidian.identity. 114 114 00:06:19,511 --> 00:06:24,184 I just like doing transform.rotation when it doesn't really matter what our 115 115 00:06:24,184 --> 00:06:28,926 rotation is, we're just putting it in there so that this instantiates happy, 116 116 00:06:28,926 --> 00:06:32,350 it's not confused saying what's the rotation, Rick? 117 117 00:06:32,350 --> 00:06:34,204 Okay, let's see how this goes, if this works. 118 118 00:06:34,204 --> 00:06:36,540 Jump back over, we need to create that reference. 119 119 00:06:36,540 --> 00:06:43,230 So on Lizard, we should now see, on our health script, 120 120 00:06:43,230 --> 00:06:47,590 we can see it's looking for deathVFX whereas my VFX, 121 121 00:06:47,590 --> 00:06:52,570 I will grab Explosion VFX, drag it on over into there. 122 122 00:06:52,570 --> 00:06:57,153 Click on play just to make sure that this works. 123 123 00:06:57,153 --> 00:07:03,004 He jumps out, shoot, bang, and one more time, shoot, bang, [SOUND]. 124 124 00:07:03,004 --> 00:07:05,084 Okay, we didn't get a VFX, why is that? 125 125 00:07:05,084 --> 00:07:08,362 Well let's go to our Explosion VFX, it's probably, 126 126 00:07:08,362 --> 00:07:12,920 if we scroll down down down to the renderer, we can see, if we look closely, 127 127 00:07:12,920 --> 00:07:16,650 the Order in Layer is 0, so we've gone through that before. 128 128 00:07:16,650 --> 00:07:19,281 I'll put this at 6 so it sits over the top of everything. 129 129 00:07:19,281 --> 00:07:24,620 That's right on the prefab, so that should be applied to what we're calling. 130 130 00:07:24,620 --> 00:07:28,387 Okay, we'll try this again. 131 131 00:07:28,387 --> 00:07:29,510 Okay, it's jumps out. 132 132 00:07:29,510 --> 00:07:30,397 [SOUND] You know what I'm gonna do? 133 133 00:07:30,397 --> 00:07:31,988 This has [LAUGH] been bugging me for awhile. 134 134 00:07:31,988 --> 00:07:33,110 I don't know, I haven't done this. 135 135 00:07:33,110 --> 00:07:34,620 I'm gonna click on my lizard. 136 136 00:07:34,620 --> 00:07:37,940 Go down, instead of 100 health, I'm gonna give you 30 health, so 137 137 00:07:37,940 --> 00:07:39,960 you get shot and killed. 138 138 00:07:39,960 --> 00:07:43,170 I'm gonna click apply, shot and killed with one shot. 139 139 00:07:43,170 --> 00:07:47,820 Now if we want to see how it works with multiple shots then we'll put that back up 140 140 00:07:47,820 --> 00:07:49,100 again, but for now. 141 141 00:07:49,100 --> 00:07:53,203 Kaboom, there we go, nice, and it created a particle effect. 142 142 00:07:53,203 --> 00:07:54,450 Let's have a look in here. 143 143 00:07:54,450 --> 00:07:57,421 We've got this Explosion VFX, now that's gonna 144 144 00:07:57,421 --> 00:08:02,102 stick around forever if we don't take care of it, so let's go take care of it. 145 145 00:08:02,102 --> 00:08:03,100 How do we take care of it? 146 146 00:08:03,100 --> 00:08:05,808 Well, we need to destroy the particle effect and 147 147 00:08:05,808 --> 00:08:07,797 this is why we're instantiating. 148 148 00:08:07,797 --> 00:08:10,989 Sorry, we're instantiating because the lizard gets destroyed, 149 149 00:08:10,989 --> 00:08:14,573 and this creates this whole new game object here, but we need a handle to it, 150 150 00:08:14,573 --> 00:08:16,760 we need a way of referring to this game object. 151 151 00:08:16,760 --> 00:08:23,050 So we'll create ourselves a GameObject type called deathVFXObject, 152 152 00:08:23,050 --> 00:08:27,780 and that's equal to what we've just instantiated. 153 153 00:08:27,780 --> 00:08:33,958 So now we have this notion of there's a deathVFXObject, 154 154 00:08:33,958 --> 00:08:40,395 so on our next line we can say Destroy(deathVFXObject), 155 155 00:08:40,395 --> 00:08:45,560 and we have the option of saying after how long. 156 156 00:08:45,560 --> 00:08:48,170 We don't wanna destroy it straight away, because we need to actually see 157 157 00:08:48,170 --> 00:08:50,980 the particle effects, so we'll say after a second. 158 158 00:08:50,980 --> 00:08:54,280 This is a little bit of a magic number in here, but I'm okay with that. 159 159 00:08:54,280 --> 00:08:59,470 We could put it to 10 and be super safe, but I'll leave it at 1. 160 160 00:08:59,470 --> 00:09:03,380 I'm pretty sure my particle effect is gonna be come and 161 161 00:09:03,380 --> 00:09:06,300 gone in one second no problem. 162 162 00:09:06,300 --> 00:09:10,291 So we'll make sure all that works and is hunky dory. 163 163 00:09:10,291 --> 00:09:14,893 Click on play, watch our hierarchy, lizard's being spawned, blump, 164 164 00:09:14,893 --> 00:09:17,877 explosion, and then the explosion went away. 165 165 00:09:17,877 --> 00:09:23,577 Now, if you look at it closely, I think, here we go, when it hits, 166 166 00:09:23,577 --> 00:09:29,880 when it strikes, boink, the particle effect is a little bit to the right. 167 167 00:09:29,880 --> 00:09:31,387 It looks a little bit off. 168 168 00:09:31,387 --> 00:09:34,479 It's all going pretty quick so you don't really notice it, but 169 169 00:09:34,479 --> 00:09:36,150 there's a few ways to solve this. 170 170 00:09:36,150 --> 00:09:39,700 For now, I'm going to be a little bit cheeky, okay, and for the [LAUGH] 171 171 00:09:39,700 --> 00:09:42,370 experienced programmers out there you're gonna be like,what are you doing? 172 172 00:09:42,370 --> 00:09:45,130 I'm gonna be a little bit cheeky and 173 173 00:09:45,130 --> 00:09:50,190 show you how I will move the particle effect as opposed to trying to 174 174 00:09:50,190 --> 00:09:55,078 reposition it on the lizard, or on the lizard's pivot point. 175 175 00:09:55,078 --> 00:09:57,530 So you see the pivot point there. 176 176 00:09:57,530 --> 00:10:01,041 Instead of trying to change where we instantiate it I'm just gonna change 177 177 00:10:01,041 --> 00:10:02,694 the particle effect a little bit. 178 178 00:10:02,694 --> 00:10:07,634 So forgive me on this that it's not perfect, but sometimes I think it's good 179 179 00:10:07,634 --> 00:10:11,130 to do these little tweaks so that we can keep on moving. 180 180 00:10:11,130 --> 00:10:16,790 So let's find our VFX > Explosion VFX, Drag one of those into the scene. 181 181 00:10:16,790 --> 00:10:19,303 You can see here is the particle effect. 182 182 00:10:19,303 --> 00:10:22,144 If we zoom in, this little symbol is showing it, and 183 183 00:10:22,144 --> 00:10:25,450 that represents where the middle of the particle effect is. 184 184 00:10:25,450 --> 00:10:31,050 If I scroll down on my particle effect, and find let's see, Shape, and on Shape, 185 185 00:10:31,050 --> 00:10:35,850 I've got position on my X coordinate, if I drag that over a little bit, 186 186 00:10:35,850 --> 00:10:40,490 you can see that this is where the origin, or the basis of the particle 187 187 00:10:40,490 --> 00:10:45,131 effect is gonna be, and this is where spawning the actual particle. 188 188 00:10:45,131 --> 00:10:47,860 So, if I click play, that's a little bit to the left. 189 189 00:10:47,860 --> 00:10:51,840 I know this is a little bit hacky, but I think this is a great quick solution to 190 190 00:10:51,840 --> 00:10:54,960 the fact that it's not quite lining up the way we want it to line up. 191 191 00:10:54,960 --> 00:10:57,390 Instead of having to go and mess around with the lizard, 192 192 00:10:57,390 --> 00:10:59,250 and the lizards animation we can do that later on. 193 193 00:10:59,250 --> 00:11:01,610 We'll tidy that later on, but this is just a quickie. 194 194 00:11:01,610 --> 00:11:04,463 We'll apply this back to the prefab. 195 195 00:11:04,463 --> 00:11:06,660 Just remove that from our scene. 196 196 00:11:06,660 --> 00:11:11,016 Let's have our lizard come walking in, walk, walk, walk, walk, and boink, 197 197 00:11:11,016 --> 00:11:14,880 that looked like it landed right over the top, so that's pretty good. 198 198 00:11:14,880 --> 00:11:16,773 Okay, as I said, it's not the best particle effect. 199 199 00:11:16,773 --> 00:11:20,052 Hopefully you've done something a little bit sharper than that, and also, 200 200 00:11:20,052 --> 00:11:22,876 if you've found that it's not spawning quite in the right place, 201 201 00:11:22,876 --> 00:11:26,166 I've given you a bit of a hint there on how you can tweak your particle effect. 202 202 00:11:26,166 --> 00:11:29,792 Okay, so that's all I wanted to do in this video, just tidying thing up and 203 203 00:11:29,792 --> 00:11:32,455 getting a little bit of a particle effect triggering. 204 204 00:11:32,455 --> 00:11:37,234 In the next video, we'll do, I'm not sure yet, something cool [LAUGH]. 205 205 00:11:37,234 --> 00:11:38,940 I'll see you in the next video. 20884