WEBVTT 00:06.850 --> 00:08.140 Welcome back. 00:08.380 --> 00:14.590 So now that we have an understanding about the order of operations of our modifiers, let's talk a little 00:14.590 --> 00:21.190 bit more about some of these settings, specifically the coefficient and these pre and post multiply 00:21.190 --> 00:22.540 additive values. 00:22.780 --> 00:30.640 You see just being able to multiply, add, subtract or divide an attribute by another attribute isn't 00:30.640 --> 00:31.540 quite enough. 00:31.900 --> 00:40.690 What if you wanted to add to your health a value equal to strength times ten or strength times 0.1 or 00:40.690 --> 00:43.840 strength times 0.1 plus 12. 00:43.870 --> 00:46.720 These are where we can do this kind of thing. 00:46.750 --> 00:49.870 Now I'm going to remove that fourth modifier there. 00:49.870 --> 00:51.280 So we just have the three. 00:51.310 --> 00:56.020 Let's talk about what happens if we start to set those coefficient values. 00:56.200 --> 01:03.220 So the three parameters we're interested in are the coefficient, the pre multiply additive value and 01:03.220 --> 01:05.920 the post multiply additive value. 01:06.280 --> 01:09.560 Let's talk about exactly how these work. 01:09.980 --> 01:12.290 Now we have a modifier. 01:12.320 --> 01:19.850 Let's say it's backed by vigor and its modifier operation is Add and Vigor has a value of nine. 01:19.850 --> 01:24.890 Now an attribute based modifier has these three parameters, right? 01:24.920 --> 01:31.700 Well, the amount added to our health is going to be affected by these three parameters as follows. 01:31.730 --> 01:34.130 Vigor has a value of nine. 01:34.160 --> 01:43.640 We first add the pre multiply additive value, then this result is multiplied by the coefficient and 01:43.640 --> 01:50.600 the result of that has the post multiply additive value added to it, which makes sense. 01:50.630 --> 01:53.750 Vigor is multiplied by a coefficient. 01:53.780 --> 02:01.940 It just happens that we can add a value to vigor before multiplying by that coefficient and then we 02:01.940 --> 02:04.310 can add a value after all that. 02:04.490 --> 02:11.480 So we can add a value before multiplying the coefficient and we can add a value after multiplying the 02:11.480 --> 02:12.500 coefficient. 02:12.530 --> 02:14.600 This gives us some flexibility. 02:14.600 --> 02:17.630 So we have this formula applied right? 02:17.630 --> 02:26.810 And let's say we have a modifier backed by health modifier op add with a coefficient of 0.1, a pre 02:26.840 --> 02:32.740 multiply additive value of two and a post multiply additive value of five. 02:32.750 --> 02:35.420 So what does this modifier return? 02:35.660 --> 02:43.040 Well, first we take the nine and add the pre multiply additive value, which is to the result of that 02:43.040 --> 02:48.250 which is 11 gets multiplied by the coefficient 0.1. 02:48.260 --> 02:52.070 So 11 times 0.1 would give us 1.1. 02:52.610 --> 02:58.240 The result of this then gets the post multiply additive value added to it. 02:58.250 --> 03:03.590 So 1.1 plus five and the result of this is 6.1. 03:03.590 --> 03:05.420 So that's how it works. 03:05.600 --> 03:13.280 So if we have these three modifier hours each with their own modifier operations and backed by different 03:13.280 --> 03:21.800 attributes, all targeting health and we give them each these parameters, then each of them will get 03:21.800 --> 03:28.550 this same formula applied and the result returned from them will be the result of this math. 03:28.910 --> 03:36.380 So let's just say that we want these coefficients and these pre and post multiply additive values for 03:36.380 --> 03:38.180 the modifiers that we have. 03:38.210 --> 03:45.350 If we do have those values and these are the results returned from those modifiers, then we should 03:45.350 --> 03:49.940 expect our health to be added to by 2.2. 03:49.970 --> 03:53.090 The result of this should be multiplied by 19. 03:53.120 --> 03:59.900 The result of this should be divided by resilience, and that should all come out to 7.26. 03:59.930 --> 04:04.760 As long as we use these parameters for each of our modifiers. 04:04.760 --> 04:07.610 So I'd like to make sure that this math checks out. 04:08.000 --> 04:16.560 So as we can see, our first modifier backed by vigor is going to need a coefficient of 0.1, a pre 04:16.610 --> 04:21.300 multiply value of three and a post multiply value of one. 04:21.320 --> 04:23.710 So let's get our first modifier. 04:23.720 --> 04:31.280 We'll expand modifier magnitude, expand attribute based and set the coefficient to 0.1. 04:31.310 --> 04:37.400 The pre multiply additive value to three and the post multiply additive value to one. 04:37.550 --> 04:45.020 Now, according to the math that I did, this should come out to 2.29 plus three is 11. 04:45.170 --> 04:48.110 11 times 0.1 is 1.1. 04:48.110 --> 04:50.960 1.1 plus one is 2.2. 04:50.990 --> 04:54.110 Feel free to double check any of this math if you like. 04:54.710 --> 04:58.250 Now for the next modifier backed by strength. 04:58.280 --> 05:03.550 We want a coefficient of 0.5, a pre value of six and a post value of 11. 05:03.560 --> 05:12.570 So let's open up that second modifier, expand our dropdowns and set the coefficient to 0.5. 05:12.600 --> 05:19.140 Set the pre multiply additive to six and the post multiply additive to 11. 05:19.140 --> 05:21.510 And we see that that should come out to 19. 05:22.020 --> 05:28.770 And for our last modifier, we'll use the values 2.10.5 and 5.7. 05:28.860 --> 05:32.760 So let's expand our dropdowns for our last modifier. 05:33.580 --> 05:42.610 And use 2.1 for the coefficient 0.5 for the pre multiply and 5.7 for the post multiply. 05:42.640 --> 05:49.420 Now as we see the result of all of this should come out to 7.26. 05:49.450 --> 05:51.100 Let's see if that's what we get. 05:51.130 --> 06:00.310 We'll press play, show, debug and overlap and there I get 7.26 just as expected. 06:00.640 --> 06:06.820 So as you can see, we have some freedom when it comes to backing our attributes by other attributes. 06:06.820 --> 06:14.710 And this is quite nice and it gives us a lot of flexibility, although it's not complete flexibility. 06:14.740 --> 06:20.130 We can't just create some arbitrarily complex calculation this way. 06:20.140 --> 06:27.670 To do that, there are other methods available to us in gas that we'll get to soon enough, but this 06:27.670 --> 06:33.280 way, at least we know we can have attributes backed by other attributes, and we're going to learn 06:33.380 --> 06:42.260 in the videos to come how we can have derived attributes which will always be derived from the values 06:42.260 --> 06:43.400 of other attributes. 06:43.400 --> 06:49.700 So when it's backing attributes change, it will change automatically and we'll see how to do that very 06:49.700 --> 06:50.500 shortly. 06:50.510 --> 06:53.480 So excellent job and I'll see you soon.