WEBVTT 00:07.320 --> 00:12.570 Okay, so we've got some really nice fireballs, and they're causing damage on the way out. 00:12.570 --> 00:13.860 Didn't mean to cast that spell. 00:13.860 --> 00:17.580 I keep hitting the one key instead of the two key, but let's hit the two key. 00:19.640 --> 00:25.610 And of course, our fireballs are a little op, but we can take our ghoul and set its character class 00:25.610 --> 00:28.250 level to something higher, like seven. 00:28.250 --> 00:32.660 And then we shouldn't be causing fatal damage anymore. 00:32.660 --> 00:36.740 But the point here is that we need some explosive damage. 00:36.740 --> 00:43.250 We're going to want these fireballs to blow up and actually blast our enemies away. 00:43.250 --> 00:50.780 And for that reason, I'd like some damage effect parameters specifically on our fireball for radial 00:50.780 --> 00:51.350 damage. 00:51.350 --> 00:51.590 Right. 00:51.590 --> 00:53.270 For explosive damage. 00:53.570 --> 00:57.560 So we're going to close the editor and open up Aura Fireball. 00:58.290 --> 01:01.530 And we're going to add another variable to this. 01:01.560 --> 01:06.120 I'd like this to be specifically for radial damage. 01:06.930 --> 01:09.270 So this could be in the protected section. 01:09.270 --> 01:18.840 It can be an f damage effect params called explosion damage params. 01:19.490 --> 01:23.360 Now explosion damage per rams is going to need to be set. 01:23.360 --> 01:26.390 Of course I'm going to expose it to blueprint. 01:27.470 --> 01:29.510 I'm going to make it blueprint red right. 01:30.860 --> 01:34.670 So we'll have write access to it in blueprint. 01:34.910 --> 01:39.140 And I'd like to be able to apply damage using this from blueprint. 01:39.320 --> 01:43.550 So now we just need to set these explosion damage params. 01:43.550 --> 01:46.550 Now we need to set some things on this. 01:46.550 --> 01:51.620 As soon as we've spawned our fireball in our fire blast. 01:52.100 --> 01:59.780 So what I'm going to do is I'm going to call make damage effect params from class defaults, but I'm 01:59.780 --> 02:11.210 going to make a local f damage effect params called explosion damage effect params and call make damage 02:11.210 --> 02:13.670 effect params from class defaults. 02:13.670 --> 02:16.400 So most of the parameters will be filled in. 02:16.400 --> 02:20.780 But we're going to want to set more of these later, right? 02:20.780 --> 02:25.790 I'd like to be able to set some of those damage params a little bit more easily. 02:26.300 --> 02:33.980 Now it'd be nice if we could just go into aura ability types into our struct f damage effect params 02:33.980 --> 02:39.980 and put some blueprint callable functions like set is radial damage and so on. 02:39.980 --> 02:44.600 But unfortunately we can't put blueprint callable functions into a struct. 02:44.600 --> 02:48.320 What we have to do instead is use other means. 02:48.320 --> 02:55.700 One thing we could do is we could use an aura ability system library function to set some parameters 02:55.700 --> 02:57.560 on our damage effect params. 02:57.860 --> 02:58.940 Let's do that. 02:58.940 --> 03:07.130 I'm going to go to Aura Ability System library and we'll make a couple of static functions. 03:08.170 --> 03:13.720 And this is going to be under the comment damage effect params. 03:17.050 --> 03:22.420 So I'm going to make a static void function called set is radial damage. 03:23.370 --> 03:29.940 Now we already have a set is radial damage I believe, which takes in an effect context handle. 03:31.070 --> 03:36.710 So I'm going to call this set is radial damage effect param. 03:37.130 --> 03:47.810 And this is just going to take in a f damage effect params struct called damage effect params. 03:48.170 --> 03:50.720 And a bool called b is radial. 03:52.580 --> 03:56.810 And this is going to be a blueprint callable function. 04:01.380 --> 04:05.970 And I do need to use my upper ram ref right here. 04:09.890 --> 04:13.640 That way this can be an input parameter even though it's a reference. 04:13.970 --> 04:16.490 Now I'm going to go ahead and generate a definition. 04:16.490 --> 04:24.410 And all I'm going to do is take damage effect params dot is radial damage and set it to be is radial. 04:26.000 --> 04:28.970 Now I'm just going to debug real quick. 04:29.660 --> 04:36.350 And we'll go ahead and get that fireball back and here in the fireball before destroying the actor after 04:36.380 --> 04:41.930 on hit, I'd like to go ahead and get my explosion. 04:43.770 --> 04:45.180 Damage per amps. 04:47.980 --> 04:51.460 And I'm going to call set is radial damage. 04:52.380 --> 04:55.500 Effect Param passing this in. 04:56.320 --> 04:57.970 Checking is radial. 05:01.530 --> 05:08.190 Dragging off and breaking the damage effect params getting that is radial damage. 05:10.240 --> 05:11.620 Using a branch. 05:13.660 --> 05:15.610 And checking is radial damage. 05:15.610 --> 05:16.990 It should be true now. 05:17.140 --> 05:18.610 So I'm going to print. 05:20.600 --> 05:21.710 Is radial. 05:26.480 --> 05:27.890 So saving all. 05:29.270 --> 05:30.590 Pressing two. 05:32.200 --> 05:36.040 And look at all that is radial lots of times. 05:37.960 --> 05:39.940 So we see that that's working. 05:46.410 --> 05:52.620 So rather than creating a whole bunch of functions I'd like to make one called set is radial damage 05:52.620 --> 05:57.390 effect params and pass in a whole bunch of parameters here. 05:57.540 --> 06:04.860 And then we'll have one for knockback force as well, and death impulse as well, because now that we 06:04.860 --> 06:11.640 have this additional explosion damage params, we can cause radial explosive damage with it. 06:11.910 --> 06:14.880 We just have to be able to set some of its params here. 06:15.240 --> 06:16.860 So I'm going to close the editor. 06:18.240 --> 06:22.260 And let's change this function to take in a few more inputs. 06:22.260 --> 06:24.330 We have bool b as radial. 06:24.360 --> 06:31.110 Now we have to remember that our damage effect params are partially being set already, because in aura 06:31.110 --> 06:35.340 fireblast we're calling make damage effect params from class defaults. 06:35.340 --> 06:38.250 Now if we peek that if we go to its definition. 06:40.430 --> 06:43.850 We'll see that we're all ready, setting a lot of things. 06:48.140 --> 06:56.720 But we're not setting these radial damage parameters because is radial damage for our ability is false. 06:56.720 --> 07:01.100 So we need to set the origin inner and outer radius. 07:03.800 --> 07:11.600 So this function can take a float called inner radius, a float called outer radius. 07:13.830 --> 07:17.160 And an F vector called origin. 07:20.310 --> 07:23.760 So we'll add these inputs to our function. 07:28.270 --> 07:31.330 And we'll just set our damage effect parameters. 07:31.690 --> 07:36.460 So we're going to set radial damage inner radius to inner radius. 07:37.060 --> 07:41.290 We'll take the damage effect params dot radial damage outer radius. 07:41.290 --> 07:50.050 Set that to outer radius and take our damage effect params dot origin, radial damage origin that is 07:50.050 --> 07:51.550 and set it to origin. 07:52.450 --> 07:55.960 And so we can set those properties from within blueprint now. 07:55.990 --> 07:57.970 And we can do the same thing for knockback. 07:57.970 --> 08:06.280 So I'm going to go ahead and make a new static void function called set knockback. 08:06.940 --> 08:13.450 And we'll just use set knockback direction because in aura damage gameplay ability. 08:15.150 --> 08:18.960 We are setting the knockback force magnitude already. 08:19.860 --> 08:22.380 As well as death impulse magnitude. 08:22.380 --> 08:24.960 So we just need to set those directions. 08:25.870 --> 08:34.090 So set knockback direction can take an f vector called knockback direction, but it also is going to 08:34.090 --> 08:37.840 need the damage effect params as a u param ref. 08:37.840 --> 08:44.410 So we'll put that in first and we'll give it blueprint callable with a category. 08:44.440 --> 08:48.670 Now in addition to this I'm going to have a set death impulse as well. 08:50.030 --> 08:59.480 So set death impulse and it'll actually be set impulse direction and its input is going to be impulse 08:59.480 --> 09:00.350 direction. 09:04.080 --> 09:06.990 So I'm going to create function definitions for these two. 09:13.380 --> 09:15.420 And they'll be super simple. 09:15.420 --> 09:20.940 This one is going to take damage effect params, and there's really not any point in setting the knockback 09:20.940 --> 09:21.990 force direction. 09:21.990 --> 09:28.920 We just need to take the knockback force and set it equal to knockback force direction times damage 09:28.920 --> 09:31.830 effect params dot, knockback, force magnitude. 09:31.830 --> 09:38.250 It doesn't really matter what we set that direction to, it's the knockback force that's actually used. 09:38.250 --> 09:44.760 But what we can do is take knockback direction and call normalize on it first, just in case we don't 09:44.760 --> 09:46.290 pass in a normal vector. 09:47.130 --> 09:49.440 And we'll do the same thing for impulse direction. 09:49.440 --> 09:52.980 So we'll say impulse direction dot normalize. 09:55.660 --> 10:03.850 And then we'll take damage effect params dot def impulse and set it equal to impulse direction times 10:03.850 --> 10:06.250 death impulse magnitude. 10:06.790 --> 10:09.460 And that's going to be on damage effect params. 10:09.580 --> 10:12.490 So death impulse magnitude. 10:13.120 --> 10:16.990 So now we have two functions to set those parameters as well. 10:17.770 --> 10:21.940 Okay, now we do need one more thing and that's that. 10:21.940 --> 10:27.400 Our knockback force magnitude is zero for this particular fireblast ability. 10:27.400 --> 10:35.470 So if we're going to set the knockback direction, I'd like to have an optional override of the magnitude 10:35.470 --> 10:35.980 itself. 10:35.980 --> 10:43.390 So I'm going to have an additional float parameter called magnitude and set it equal to zero. 10:44.200 --> 10:48.850 And I'll do this for both death impulse and knockback. 10:48.850 --> 10:53.500 So we'll have a float magnitude input parameter that's optional. 10:53.500 --> 11:02.530 And then in these setters we'll only override the magnitudes if this magnitude is not zero. 11:03.070 --> 11:11.050 So what we can do here is we'll check if magnitude is zero. 11:13.750 --> 11:15.430 Then we'll do what we were doing here. 11:15.430 --> 11:19.600 We'll just use the knockback force magnitude that was already there. 11:20.170 --> 11:24.880 Otherwise, we'll override the knockback force magnitude. 11:24.880 --> 11:29.650 We'll multiply knockback direction by the magnitude passed in. 11:31.950 --> 11:35.160 And we'll do this same thing for the death impulse. 11:36.210 --> 11:44.310 We'll say if magnitude is zero, then we'll do what we were doing. 11:45.600 --> 11:46.470 Else? 11:47.450 --> 11:54.350 Will do the same thing, except we're going to use magnitude instead of the damage effect per Ram's 11:54.350 --> 11:55.280 magnitude. 11:56.450 --> 12:02.960 So we can just pass in a zero if we're confident that that magnitude is set in the damage effect params. 12:02.960 --> 12:06.680 Otherwise we can pass in an override for that magnitude. 12:07.070 --> 12:09.530 Okay, let's compile and launch. 12:10.920 --> 12:13.920 Okay, so we're back now. 12:14.530 --> 12:20.380 Here in the fireball on hit, we're going to take our explosion damage params. 12:21.250 --> 12:22.390 Now we're going to set some things. 12:22.390 --> 12:27.220 I want it to be radial, and we'll set an inner and an outer radius. 12:27.220 --> 12:33.190 For this I'll just use 50 and 200 for now, maybe even 300. 12:33.580 --> 12:37.480 And the origin is going to be this fireballs location. 12:37.480 --> 12:39.070 Get actor location. 12:42.770 --> 12:45.620 Now we can also set some additional parameters. 12:48.160 --> 12:49.510 Such as knockback. 12:49.510 --> 12:53.110 So I'm going to say set knockback direction. 12:57.980 --> 13:00.710 And we're also going to set the death impulse direction. 13:06.060 --> 13:08.340 And how are we going to calculate these? 13:08.490 --> 13:14.850 Well, if this is going to be radial damage, then I'd like to get all actors that are alive within 13:14.850 --> 13:15.450 radius. 13:15.450 --> 13:18.780 In other words, get live players within radius. 13:18.810 --> 13:20.730 Well, I have a nice function for that. 13:20.730 --> 13:28.500 Get live players within radius will return an array of actors, and I can even pass in actors to ignore, 13:28.500 --> 13:31.830 such as the owner of this fireball. 13:32.620 --> 13:36.190 Now we are going to want to avoid overlapping aura. 13:36.190 --> 13:38.740 So we could call get owner. 13:38.740 --> 13:40.990 But are we setting the owner? 13:41.260 --> 13:43.570 Well, let's make sure we are. 13:43.600 --> 13:51.250 We'll just close real quick and we'll go back into aura Fireblast when we're spawning the fireball and 13:51.250 --> 13:52.480 we can set the fireballs. 13:52.480 --> 13:52.930 Owner. 13:52.930 --> 13:58.090 We can take fireball and we can call set owner. 13:59.320 --> 14:02.650 Setting it to get avatar actor from actor info. 14:03.920 --> 14:08.420 Now we can be confident that the fireball is going to have its owner set. 14:08.960 --> 14:11.180 So with that, let's go back into the editor. 14:11.210 --> 14:13.190 We'll get our fireball back open. 14:13.190 --> 14:18.470 We'll get our owner and we can plug that in and use make array. 14:18.500 --> 14:23.270 Now we could also take this array and we can add the self to it. 14:23.990 --> 14:25.490 So we can use AD. 14:28.720 --> 14:31.660 Hook that in and we can get a reference to self. 14:33.960 --> 14:38.010 And we can make sure this projectile doesn't overlap with itself either. 14:39.820 --> 14:46.420 So we're getting live players within radius world context object can also be self. 14:51.290 --> 14:52.970 So I'm going to pass that in. 14:54.290 --> 14:58.280 And the radius is going to be the same as our outer radius. 14:58.970 --> 15:01.160 We can make these variables as well. 15:01.160 --> 15:07.940 And the sphere origin is going to be the same as our projectiles location. 15:07.970 --> 15:10.340 So now we have an array to loop over. 15:10.340 --> 15:12.260 So we're going to loop over this. 15:13.110 --> 15:14.400 With for each. 15:18.120 --> 15:22.140 And in our loop body we're going to take our damage effect params. 15:22.410 --> 15:29.130 And for each iteration of the loop we're going to overwrite some properties in our explosion damage 15:29.130 --> 15:34.050 params, namely our knockback direction and our magnitude. 15:34.350 --> 15:37.500 We don't have to set the radial params. 15:37.500 --> 15:39.510 We can do that before the loop. 15:40.930 --> 15:43.030 We can even do it after the loop. 15:43.990 --> 15:47.860 But in the loop body we need to set our knockback directions. 15:47.860 --> 15:51.940 So we need to get our array element and get actor location. 15:53.800 --> 15:57.400 And we need to calculate the direction for the knockback. 15:58.130 --> 16:03.920 So I'm going to get the vector from my projectiles location. 16:05.080 --> 16:07.630 To the victim's location. 16:07.630 --> 16:08.920 The thing we're hitting. 16:09.590 --> 16:12.380 Or almost hitting or getting close to hitting. 16:12.380 --> 16:19.970 So if I want the vector from the fireball to the victim, then I'm going to subtract the destination 16:19.970 --> 16:24.680 from the start point of the vector destination being the actor we're hitting. 16:24.680 --> 16:26.090 So we're going to subtract. 16:26.630 --> 16:28.070 We'll get that direction. 16:29.120 --> 16:30.260 And. 16:31.970 --> 16:37.430 So we can pass this in as the knockback direction and we can give a knockback magnitude. 16:37.460 --> 16:39.590 I'm just going to give it 800 for now. 16:40.900 --> 16:46.360 And I'm going to use the same vector for the death impulse and give it 600. 16:47.850 --> 16:52.170 So for each loop body here, we're setting those parameters. 16:52.170 --> 16:59.880 And if we're going to apply damage to each one we actually need to set the radial damage params as well. 16:59.910 --> 17:04.260 Before we do that so we can set them first. 17:22.120 --> 17:22.900 Like that. 17:22.900 --> 17:27.520 And I'm going to actually promote this array to a variable. 17:27.760 --> 17:31.930 And we'll call this overlapping players. 17:37.190 --> 17:37.790 That way. 17:37.790 --> 17:39.530 We don't need this reroute node. 17:43.350 --> 17:46.230 And we'll hook up overlapping players to the for loop. 17:50.100 --> 17:53.220 So now we have our explosion damaged params. 17:53.220 --> 17:56.490 We're calculating knockback and death impulse. 17:56.490 --> 18:02.730 So for each of these actors I'm going to call apply damage effect. 18:05.040 --> 18:09.210 And hook in my explosion damage params. 18:10.940 --> 18:13.580 And then at the end of this loop. 18:15.750 --> 18:19.290 I'm finally going to destroy the actor. 18:22.900 --> 18:28.480 And we could do on hit there, but it's fine that we're doing it before, so let's test this out. 18:32.800 --> 18:36.100 Okay, so I got a exception. 18:38.320 --> 18:40.540 And apply damage effect. 18:41.250 --> 18:46.080 And my source ability system component is not valid. 18:46.110 --> 18:51.150 Looks like it's a null pointer and I have some empty damage effect params. 18:51.150 --> 18:57.360 Actually, I've just set the death impulse, but nothing else is being set here, just the things we 18:57.360 --> 18:59.040 set in blueprint, right? 18:59.250 --> 19:01.800 So it's not being filled in. 19:02.220 --> 19:05.550 And we need to see why in aura Fireblast. 19:05.940 --> 19:10.980 And sure enough, here's why I never actually set it on my fireball. 19:10.980 --> 19:14.310 I just made a local variable, which makes sense. 19:14.310 --> 19:19.830 So I'm going to go ahead and hit stop and make sure that I'm setting this. 19:19.830 --> 19:22.710 I'm going to go to my fireball. 19:22.710 --> 19:31.590 I'm going to take my fireball and set its explosion damage effect params. 19:31.920 --> 19:33.030 I don't see it here. 19:33.030 --> 19:36.660 So let's go to Aura Fireball and it's protected. 19:36.660 --> 19:38.190 I need to make it public. 19:43.670 --> 19:45.620 And here in aura Fireblast. 19:45.920 --> 19:48.110 I can set it here with that. 19:48.110 --> 19:49.550 Now it should be set. 19:49.670 --> 19:50.930 Let's try this again. 19:52.040 --> 19:55.400 Okay, so I need to go back into my. 19:59.430 --> 20:00.420 Fire, fire! 20:00.420 --> 20:02.550 Blast and open up BP. 20:02.580 --> 20:03.540 Fireball. 20:04.300 --> 20:11.650 And it looks like I have lost some of my progress here because of that exception. 20:14.020 --> 20:15.490 No worries. 20:15.520 --> 20:17.110 After on hit. 20:18.130 --> 20:21.430 I'm going to go ahead and set my radial damage effect params. 20:26.740 --> 20:29.410 And then we'll get live players within radius. 20:34.980 --> 20:39.030 I'm going to take the owner and make an array, passing it in. 20:47.180 --> 20:48.170 Hook that up. 20:48.500 --> 20:51.350 But I'm also going to add the self to this array. 20:52.540 --> 20:53.800 So I'm going to call AD. 20:55.190 --> 20:56.630 Get a reference to self. 20:57.850 --> 20:58.900 Hook that in. 20:59.800 --> 21:01.420 And that's going to go in here. 21:03.050 --> 21:04.100 Right here. 21:16.250 --> 21:19.820 And self is also going to be the world context object. 21:24.440 --> 21:30.800 Now, if I can't help but cross wires, I make sure that the wires are as short as possible so you can 21:30.800 --> 21:31.790 see where they go. 21:33.840 --> 21:36.630 Okay, so I have live players within radius. 21:36.630 --> 21:40.170 I need the sphere origin that's going to be get actor location. 21:41.870 --> 21:43.070 I need my radius. 21:43.070 --> 21:50.180 I'm just going to promote that to a variable and call this radial damage radius. 21:53.710 --> 21:54.250 I'll make it. 21:54.250 --> 21:54.970 Radial damage. 21:54.970 --> 21:57.010 Outer radius. 21:58.770 --> 22:02.550 And I'll compile and set this to a default value of 300. 22:11.680 --> 22:15.820 And I'll use it here when setting my radial damage effect params. 22:17.010 --> 22:19.770 And I'll promote the inner radius to a variable to. 22:21.690 --> 22:23.400 Radial damage. 22:23.400 --> 22:24.930 Inner radius. 22:25.530 --> 22:27.390 That way we have parameters. 22:32.350 --> 22:35.830 This is why I save before play testing. 22:36.430 --> 22:40.630 Usually looks like I forgot this time, but this is why I do it. 22:40.630 --> 22:41.590 Because. 22:43.150 --> 22:47.050 When you crash in debug mode and you haven't saved, you lose progress. 22:48.680 --> 22:52.040 Okay, so we're getting live players within radius. 22:52.040 --> 22:53.990 We're going to do a loop. 22:55.560 --> 22:56.520 For each. 23:00.870 --> 23:04.860 And we need to calculate knockback direction and impulse direction. 23:04.860 --> 23:08.490 So I'm going to use Get actor location. 23:08.580 --> 23:13.290 And I'm also going to get actor location of the array element. 23:13.290 --> 23:18.510 And I want the vector from the fireball to the array element. 23:19.200 --> 23:24.210 In other words, from the fireball to the hit actor. 23:25.620 --> 23:31.710 We always subtract the destination from the starting point of a vector. 23:33.730 --> 23:36.130 And that's going to be our knockback direction. 23:36.580 --> 23:40.060 And we'll just have a knockback magnitude here. 23:40.060 --> 23:41.890 We'll promote this to a variable. 23:41.920 --> 23:45.400 Call it knockback magnitude. 23:47.130 --> 23:48.420 I'll make it 800. 23:50.630 --> 23:53.180 And for the loop body, we'll set this. 23:57.480 --> 24:03.360 And we'll use the same vector for knockback direction as death impulse direction. 24:03.360 --> 24:05.970 So I'm going to promote it. 24:07.050 --> 24:10.020 To a variable and we'll just overwrite it every time. 24:10.020 --> 24:12.600 We'll call this knockback direction. 24:18.740 --> 24:22.250 And I'm going to use it instead of having more than one wire here. 24:22.250 --> 24:25.190 So I'm going to use knockback direction here. 24:27.320 --> 24:30.890 And I'm going to use the same vector for the death impulse. 24:32.860 --> 24:34.120 Knocked back. 24:34.810 --> 24:35.920 Direction. 24:36.580 --> 24:39.070 And I'll just have a knockback magnitude. 24:39.070 --> 24:40.480 So promote to variable. 24:41.510 --> 24:46.910 I said knock back, but I mean death impulse magnitude and death impulse magnitude. 24:47.690 --> 24:50.180 Can be 600. 24:50.360 --> 24:52.970 Okay, now with that. 24:53.700 --> 24:55.590 We have these parameters. 24:56.210 --> 25:04.460 Again, we're going to call apply damage effect and pass in these parameters which should no longer 25:04.460 --> 25:05.450 be empty. 25:06.750 --> 25:08.880 As we're actually setting them. 25:09.860 --> 25:11.690 In our game play ability now. 25:12.080 --> 25:16.400 And with that, when this loop is done, we'll destroy the actor. 25:16.400 --> 25:19.160 Okay, this time I'm going to save all. 25:20.190 --> 25:23.730 And press play and try it out. 25:25.520 --> 25:29.180 Okay, so the target ability system component is null. 25:29.890 --> 25:30.520 So. 25:30.520 --> 25:36.400 Yet one more thing that I haven't set that I need to set in that for loop. 25:36.400 --> 25:40.000 Getting the ability system component from the other actor. 25:40.240 --> 25:40.780 It's okay. 25:40.780 --> 25:43.360 This is sometimes an iterative process. 25:43.720 --> 25:49.720 Sometimes we have to try things and find where they break and fix the issue at hand. 25:49.720 --> 25:53.560 Try them again, see where they break again, and fix the issue again. 25:53.560 --> 25:56.380 Sometimes this is the development process. 25:57.120 --> 25:58.860 But we're getting closer now. 25:58.860 --> 26:03.150 We know that we're getting to just about the end of that function. 26:03.180 --> 26:04.710 Let's go to fireball. 26:04.710 --> 26:12.480 And here in this iteration of the loop, we need to be setting the target ability system component pointer 26:12.480 --> 26:14.520 on our damage effect params. 26:16.100 --> 26:21.440 And we can get our array element and we can call get ability system component. 26:22.990 --> 26:28.660 On the ability system blueprint library and we can take those explosion damage params. 26:29.890 --> 26:33.610 And we can set and we don't have a setter. 26:33.610 --> 26:38.710 So let's just really quickly make one in our ability system library. 26:39.160 --> 26:44.710 So static void set effect params AC. 26:46.190 --> 26:47.870 It's going to take in. 26:51.120 --> 26:59.340 A upper arm ref damage effect params and a new ability system component pointer in ASC. 27:00.600 --> 27:02.700 It's going to be blueprint callable. 27:04.790 --> 27:06.830 We can generate a definition. 27:09.490 --> 27:14.170 We can take the damage effect params dot target ability. 27:14.170 --> 27:15.340 System component. 27:16.700 --> 27:18.650 And set it equal to nasc. 27:19.040 --> 27:23.390 And we should probably specify that this is for the target. 27:23.390 --> 27:28.310 So we're going to say set target effect params asc. 27:29.600 --> 27:34.100 And with that we should be able to set it. 27:35.360 --> 27:37.430 Okay, back into the fireball. 27:37.430 --> 27:39.980 And this should be our last step. 27:39.980 --> 27:42.590 We're going to take the damage params. 27:42.590 --> 27:48.380 We're going to call set target effect params as passing in that ASC. 27:48.770 --> 27:49.970 Looking this up. 27:53.820 --> 27:54.720 Like so. 28:07.680 --> 28:10.020 And with a little slight cleanup. 28:12.250 --> 28:13.750 We can try this out. 28:17.710 --> 28:19.390 All right. 28:23.020 --> 28:27.040 Now they're dying because they can't take that much damage. 28:27.070 --> 28:32.380 So to really test this, we can take our damage. 28:33.650 --> 28:37.280 For Fireblast and we can just scale it by zero. 28:39.950 --> 28:43.310 That way we'll only see the effects of. 28:46.630 --> 28:47.950 Our knockback. 28:55.940 --> 29:01.700 And I'm going to set my knockback magnitude to 2000. 29:01.730 --> 29:03.560 There's no way we can miss that. 29:07.600 --> 29:08.230 All right. 29:08.230 --> 29:12.940 I'm going to have to override that pitch, I think, because it is knocking them back. 29:14.360 --> 29:17.060 But it's not knocking them upward. 29:22.020 --> 29:26.550 So I'm just going to alter my knockback direction. 29:27.470 --> 29:29.570 So I'm going to take knockback direction. 29:29.570 --> 29:33.320 I'm going to make a rotator I can use make wrote from X. 29:36.790 --> 29:38.650 I can break it. 29:39.500 --> 29:41.210 Or split the struct pin. 29:41.210 --> 29:44.360 I can take this and make a new rotator from it. 29:49.450 --> 29:54.580 And I can hook in yaw and roll and override pitch to 45. 29:55.790 --> 29:57.320 And I can make a vector. 30:02.020 --> 30:09.850 So we'll call get forward vector from this rotator and pass this in for the knockback direction. 30:16.130 --> 30:17.720 There we go. 30:17.750 --> 30:20.300 That's what I wanted to see. 30:20.330 --> 30:21.740 Okay. 30:23.410 --> 30:25.690 Kind of a lot of steps to this. 30:28.680 --> 30:30.720 I'm going to collapse this to a function. 30:30.720 --> 30:37.470 I'm going to call it override knockback pitch and I'm going to make it pure. 30:38.530 --> 30:39.700 And hook that in. 30:41.240 --> 30:44.360 And knockback magnitude doesn't have to be 2000. 30:44.390 --> 30:46.160 I'll set it back to 800. 30:52.210 --> 30:54.370 And it's working. 31:04.620 --> 31:05.880 Excellent. 31:05.880 --> 31:07.170 Excellent. 31:07.200 --> 31:07.950 All right. 31:07.950 --> 31:13.140 And I'm going to go ahead and take my fire blast and set its damage scale back to one. 31:13.140 --> 31:18.300 And with that we now have our fire blast ability. 31:20.290 --> 31:22.030 Beautiful. 31:22.690 --> 31:23.800 Excellent job. 31:24.590 --> 31:26.300 I'll see you in the next video.