WEBVTT 00:00.200 --> 00:02.300 Welcome to your next quest. 00:03.650 --> 00:07.700 In this quest, you're going to spawn the firebolt from the event. 00:07.730 --> 00:12.370 In other words, as soon as the event happens, spawn that firebolt. 00:12.380 --> 00:14.270 So this will be a little bit different. 00:14.300 --> 00:16.520 Now we're no longer spawning a firebolt. 00:16.520 --> 00:21.140 As soon as we activate the ability, we're waiting for that event to happen. 00:21.290 --> 00:24.630 And in response to that we'll spawn the firebolt. 00:24.650 --> 00:27.890 So there are a couple of things you'll have to do. 00:27.920 --> 00:32.480 I'm going to leave it up to you to figure it out, and then we'll go over the solution together. 00:32.480 --> 00:35.690 So pause the video and conquer this quest now. 00:38.710 --> 00:44.020 Okay, so I'm in my aura projectile spell and here's activate ability. 00:44.050 --> 00:49.630 Now we know that this is automatically executed when we activate the ability. 00:49.630 --> 00:53.020 And what we're doing here is we're spawning a projectile. 00:53.230 --> 00:58.630 Well, now we're going to need to spawn the projectile a little bit later on. 00:58.630 --> 01:01.960 So activate ability isn't the greatest place to do it. 01:02.320 --> 01:08.650 What I'm going to do is make a blueprint callable function so we can do this in response to waiting 01:08.650 --> 01:10.180 for a gameplay event. 01:10.390 --> 01:18.610 So I'm going to go into my Aura projectile spell header file and I'm going to close all other tabs and 01:18.610 --> 01:21.910 here I'm going to make a blueprint callable function. 01:21.910 --> 01:24.310 I can let this be a protected function. 01:24.400 --> 01:25.960 We'll put it right here. 01:26.950 --> 01:28.090 It'll be void. 01:28.090 --> 01:31.660 And I'm going to call this spawn projectile. 01:32.200 --> 01:38.140 For now, I'm going to leave it without any input parameters that might be subject to change in the 01:38.140 --> 01:38.890 future. 01:39.550 --> 01:45.190 And I'm going to make this a new function with Blueprint Callable. 01:46.730 --> 01:50.780 We'll give it a category projectile. 01:51.840 --> 01:58.680 So I'm going to go ahead and generate the definition and all I'm going to do is copy the code that I 01:58.680 --> 02:00.660 have and activate ability. 02:00.660 --> 02:05.070 So I'm going to actually control X to cut it, control V to paste it. 02:05.550 --> 02:07.080 Now here's a problem. 02:07.080 --> 02:10.170 We don't have our activation info, right? 02:10.320 --> 02:15.600 But we can always check to see if our avatar actor has authority. 02:15.690 --> 02:24.270 So if we type, get avatar actor from actor info, this will return an actor that is our avatar provided 02:24.270 --> 02:31.230 that we have one and if we have one then we can call has authority from that avatar actor. 02:31.380 --> 02:38.120 So I'm going to use that control X and Replace has authority here with this call. 02:38.130 --> 02:40.410 There are always options, right? 02:40.410 --> 02:44.730 So Spawn Projectile is going to check to see if we're on the server. 02:44.730 --> 02:47.610 If we are, it's going to spawn the projectile. 02:47.610 --> 02:51.970 So this is what I'm going to do in response to the gameplay event. 02:51.970 --> 02:57.370 Now it's blueprint callable, so all I need to do is call it from the blueprint. 02:57.370 --> 02:58.660 So let's do that. 02:58.660 --> 03:00.640 I'm going to run in debug mode. 03:03.210 --> 03:06.360 And I'm going to go ahead and open up my ability. 03:07.330 --> 03:08.770 G a firebolt. 03:08.770 --> 03:15.550 And right here, in response to an event received, I'm going to call the blueprint callable function 03:15.550 --> 03:17.560 spawn projectile. 03:19.270 --> 03:25.660 So right here event received spawn projectile and we can test out how this works. 03:26.500 --> 03:30.820 Saving all first pressing play clicking on an enemy. 03:31.180 --> 03:38.320 And I see that we get that projectile spawned and we don't see it until that anim notify is hit. 03:38.320 --> 03:43.960 And of course, we can always slow that animation down by changing its rate scale. 03:43.960 --> 03:45.550 I changed it to 0.1. 03:47.810 --> 03:50.960 And boom, it spawns right there. 03:51.080 --> 03:54.860 At that point in the animation, which is exactly what I wanted. 03:54.980 --> 03:56.030 Perfect. 03:56.210 --> 04:05.570 So now we know that we can do things at a particular point in an animation montage or really at a particular 04:05.570 --> 04:08.080 point in the game period. 04:08.090 --> 04:10.640 All we have to do is send a gameplay event. 04:10.670 --> 04:18.110 Now, if this particular ability is active, when that event is received, as long as we've reached 04:18.140 --> 04:23.720 wait gameplay event, then the ability can be waiting for a gameplay event to occur. 04:24.080 --> 04:32.240 Now, once we've spawned the projectile, perhaps we can end the ability here with an ability and then 04:32.240 --> 04:35.730 we should be able to activate the ability again. 04:35.750 --> 04:39.800 So now if I spawn a projectile. 04:40.960 --> 04:45.250 And then since I've already spawned one, I can activate it again. 04:46.910 --> 04:49.940 So this is a pretty fast animation. 04:50.820 --> 04:56.010 So if I'm holding my left mouse button down, we'll spam it pretty quickly. 04:58.500 --> 05:03.510 But we're going to soon learn how to implement Cooldowns for abilities. 05:03.510 --> 05:07.710 So spamming abilities is not going to be a problem. 05:08.830 --> 05:09.700 Excellent. 05:10.220 --> 05:16.820 So now that we're spawning the projectile at the correct point in time, it's time to take care of a 05:16.820 --> 05:18.270 few other issues. 05:18.290 --> 05:19.000 Right. 05:19.010 --> 05:24.380 Our character is facing this way and we click and we send the projectile that way. 05:24.380 --> 05:25.500 That's a problem. 05:25.520 --> 05:32.870 We also want to orient our character in the direction that they're launching the projectile too, don't 05:32.870 --> 05:33.320 we? 05:33.620 --> 05:36.470 So we have a number of things that we'd like to do. 05:36.560 --> 05:43.520 For one, we want to know the location in space that we're supposed to launch our projectile towards. 05:44.070 --> 05:47.730 So we're going to learn how to do that in the videos to come. 05:47.760 --> 05:50.010 Great job and I'll see you soon.