WEBVTT 00:06.970 --> 00:07.960 Welcome. 00:08.050 --> 00:15.880 So now that we know how we can use modifiers to apply modifications to attributes and that those modifications 00:15.880 --> 00:23.440 themselves can be backed by other attributes, this opens a very important door when it comes to RPG 00:23.590 --> 00:29.520 style attributes, and that is the door to derived attributes. 00:29.530 --> 00:36.490 In other words, attributes that depend either partially or entirely on other attributes. 00:37.030 --> 00:42.850 Now, in our game project, every single one of our attributes is going to be functional. 00:42.850 --> 00:45.910 It's going to affect the game in some way. 00:45.910 --> 00:54.400 That's important and it helps from a game design perspective to lay out what all the attributes in the 00:54.400 --> 00:55.870 game should be doing. 00:55.870 --> 01:02.740 Now, we won't be discussing all of them just yet, but we'll discuss most of them right now because 01:02.740 --> 01:10.040 we're going to design more attributes and decide which attributes are dependent on other attributes. 01:10.130 --> 01:18.050 Now, so far, we've decided to categorize some of our attributes as primary attributes. 01:18.500 --> 01:26.750 And in our game, the primary attributes are going to be the independent attributes that don't depend 01:26.750 --> 01:28.910 on any other attributes. 01:28.910 --> 01:37.520 These are the attributes that are stand alone and we can increase them or reduce them based on various 01:37.520 --> 01:39.350 mechanics in our game. 01:39.350 --> 01:45.980 But it's these attributes that in some way or another, all other attributes depend on. 01:46.340 --> 01:51.980 These are the four primary attributes we've created, starting with strength. 01:52.160 --> 01:59.720 Now, every attribute affects the game in some way, and we need to decide how the attributes affect 01:59.720 --> 02:00.110 the game. 02:00.110 --> 02:03.380 And this is a decision made at the design level. 02:03.380 --> 02:10.010 You could come up with different ways that I come up with and ultimately in a game development team, 02:10.010 --> 02:17.810 there's some sort of design process, some sort of meeting or series of meetings where those in charge 02:17.810 --> 02:24.140 of designing the game agree upon the mechanics of how each attribute affects the game. 02:24.140 --> 02:29.330 And for this game, project decisions had to be made, so I made them. 02:29.330 --> 02:37.490 But I understand that you may have ideas for how you'd like your attributes to affect your game, so 02:37.490 --> 02:40.520 don't take these as chiseled in stone. 02:40.550 --> 02:42.110 Don't take them as gospel. 02:42.110 --> 02:49.370 I've just made some design decisions because they had to be made and you may have other ideas and you'd 02:49.370 --> 02:52.100 like to implement them differently and that's totally fine. 02:52.100 --> 02:58.970 And at this stage as a game developer, I think you're capable of making those decisions and implementing 02:58.970 --> 03:01.970 things in your own way if you so choose. 03:01.970 --> 03:08.360 But do feel free to copy my design and just follow along exactly. 03:08.360 --> 03:14.960 If you don't feel like sitting down and making those design decisions just yet for your own game in 03:14.960 --> 03:18.590 this game, strength is going to increase physical damage. 03:18.830 --> 03:20.960 Now, we haven't gotten to damage yet. 03:20.990 --> 03:26.930 We're not implementing it at this point in the course, but when we do, we'll have different types 03:26.930 --> 03:27.620 of damage. 03:27.620 --> 03:29.330 Physical being one of them. 03:29.330 --> 03:38.810 And strength is going to be an attribute that will add some kind of bonus to attacks which cause physical 03:38.810 --> 03:39.560 damage. 03:39.560 --> 03:45.470 Now, that's not the only thing strength can affect in the game, but this is going to be the defining 03:45.470 --> 03:52.340 characteristic of strength, the description given to strength when you hover over it and your attribute 03:52.340 --> 03:57.200 menu intelligence is going to increase magical damage. 03:57.200 --> 04:01.640 Resilience is going to increase armor and armor penetration. 04:01.640 --> 04:08.270 Now, I know we haven't created those yet, but that's how I'm going to define resilience and vigor 04:08.270 --> 04:13.640 is going to increase health the most vital of all the attributes, perhaps. 04:13.640 --> 04:17.120 So these are the decisions I've made for the primary attributes. 04:17.120 --> 04:18.980 But what about other attributes? 04:18.980 --> 04:21.500 What about secondary attributes? 04:21.500 --> 04:29.150 In this game project secondary attributes are going to more closely affect gameplay mechanics, mostly 04:29.150 --> 04:36.350 combat, and these will be attributes that are derived either partially or wholly from other attributes. 04:36.350 --> 04:40.700 The secondary attributes I've decided to create are as follows. 04:40.730 --> 04:41.780 Armor. 04:41.930 --> 04:44.900 Armor is going to depend on resilience. 04:44.900 --> 04:50.900 As resilience increases, armor is going to increase by a certain amount that we decide. 04:50.930 --> 04:57.500 The definition of armor is that it reduces damage taken and improves block chance. 04:57.530 --> 04:59.930 Next, we'll have armor penetration. 04:59.960 --> 05:06.680 Armor penetration is going to be dependent on resilience and it's going to ignore a percentage of. 05:06.700 --> 05:10.690 Enemy armor and also increase the critical hit chance. 05:10.690 --> 05:19.360 So as we attack an enemy, if we have a high armor penetration, that value is going to cause us to 05:19.360 --> 05:26.620 ignore some of the armor of the enemy we're attacking, allowing us to cause more damage and also increase 05:26.620 --> 05:28.960 the chance to get a critical hit. 05:29.820 --> 05:30.270 Next. 05:30.270 --> 05:33.390 We have blockchains which will be dependent on armor. 05:33.420 --> 05:38.790 Notice this is a secondary attribute that depends on another secondary attribute. 05:38.790 --> 05:43.320 So these don't have to all depend solely on primary attributes. 05:43.350 --> 05:47.220 Blockchains will be the chance to cut incoming damage in half. 05:47.220 --> 05:51.420 So in our damage calculations, we'll take blockchains into account. 05:51.420 --> 05:56.400 And if we get a successful block, we're going to reduce the incoming damage by half. 05:57.380 --> 05:59.180 Next is critical hit chance. 05:59.210 --> 06:02.330 Notice armor penetration increases this. 06:02.510 --> 06:05.390 So this will be dependent on armor penetration. 06:05.390 --> 06:09.470 And as armor penetration increases, so does critical hit chance. 06:09.470 --> 06:14.030 And this will be the chance to double the damage, plus a critical hit bonus. 06:14.030 --> 06:18.830 So if we get a successful critical hit, our damage will be doubled. 06:19.070 --> 06:21.290 Next, we have critical hit damage. 06:21.290 --> 06:24.500 This will also be dependent on armor penetration. 06:24.500 --> 06:28.820 And this is the bonus damage added when a critical hit is scored. 06:29.300 --> 06:31.520 Next is critical hit resistance. 06:31.520 --> 06:37.400 This will be dependent on armor and this will reduce the critical hit chance of attacking enemies. 06:37.400 --> 06:43.850 So as an enemy may have a high critical hit chance if we have a high critical hit resistance, we can 06:43.850 --> 06:45.620 sort of balance that out. 06:46.550 --> 06:48.140 Next is health regeneration. 06:48.140 --> 06:50.500 And this will be dependent on vigor. 06:50.510 --> 06:55.490 So vigor increases health, yes, but it also increases other things. 06:55.490 --> 07:00.050 Health regeneration will be the amount of health regenerated every one second. 07:00.050 --> 07:05.450 So a periodic infinite gameplay effect should come to mind here, right? 07:06.110 --> 07:12.620 Next we'll have mana regeneration and I'll have mana regeneration dependent on intelligence, and this 07:12.620 --> 07:15.620 will be the amount of mana regenerated every second. 07:16.570 --> 07:22.750 Then we'll have our max health, which will be dependent on vigor, and this will be the maximum amount 07:22.750 --> 07:23.950 of health obtainable. 07:23.950 --> 07:25.990 Now, we already have this attribute. 07:26.020 --> 07:28.480 We called it one of our vital attributes. 07:28.480 --> 07:34.540 But I'd like to now consider this to be a secondary attribute, as I'd like it to be dependent on one 07:34.540 --> 07:37.510 of our primary attributes, the vigor attribute. 07:38.470 --> 07:40.600 And finally we'll have Max Mana. 07:40.600 --> 07:43.640 And this will now be dependent on intelligence. 07:43.660 --> 07:46.960 This will be the maximum amount of mana obtainable. 07:46.990 --> 07:50.860 So as our intelligence goes up, so will our max mana. 07:51.130 --> 07:56.770 So as you can see, we have quite a few secondary attributes that we're going to add to our attribute 07:56.770 --> 07:57.520 set. 07:58.060 --> 08:03.930 And adding attributes to an attribute set is something that we now have experience doing. 08:03.940 --> 08:06.670 So this is going to be your quest. 08:06.910 --> 08:12.760 Your quest is to add all the secondary attributes to your attribute set. 08:12.790 --> 08:18.970 Now you can come up with your own or you can use the list that we just went over, complete all the 08:18.970 --> 08:21.580 boilerplate steps for each attribute. 08:21.610 --> 08:28.630 Now, this involves declaring the variable, adding the rep notify and your uproperty and defining that 08:28.630 --> 08:29.320 function. 08:29.320 --> 08:31.110 Make sure it's a new function. 08:31.120 --> 08:38.630 Also adding the attribute accessors macro for each of the attributes and in your rep, notify use the 08:38.630 --> 08:46.910 gameplay attribute rep notify boilerplate macro and also add each attribute to get lifetime replicated 08:46.910 --> 08:51.020 props so you can register it as a replicated variable. 08:51.020 --> 08:56.180 So pause the video and add all of your new secondary attributes now. 08:59.240 --> 08:59.690 Okay. 08:59.690 --> 09:07.580 So since this is mostly boilerplate, in fact, it's all boilerplate, I'm going to add all of the attributes 09:07.730 --> 09:12.570 and time lapse the video as this is all repetition at this point. 09:12.590 --> 09:17.710 So if you like, you can follow along, pause or slow the video down. 09:17.720 --> 09:21.770 But these steps will all be repetition. 11:21.690 --> 11:22.260 Okay. 11:22.260 --> 11:24.360 I think I'm just about done. 11:24.510 --> 11:33.330 And just to recap on all that I did here, I first added our secondary attributes and I made sure to 11:33.330 --> 11:39.060 have a multi-line comment to show where these secondary attributes began. 11:39.210 --> 11:48.900 So I added the secondary attributes here, giving them both the property and attribute accessors, making 11:48.900 --> 11:58.050 sure that the properties have on rep for the rep notify for each of these attributes and that's something 11:58.080 --> 12:03.030 to double check as it's really easy to copy and paste and forget one of these steps. 12:03.030 --> 12:06.540 So I have the on rep rep notifies for each one. 12:06.930 --> 12:12.650 I then declared the rep notifies for each one and defined them. 12:12.660 --> 12:19.890 I also moved my max health and max mana here into the secondary attributes out of the vital attributes. 12:19.890 --> 12:26.560 So now our vital attribute is only consist of health and mana currently and max health and max mana. 12:26.590 --> 12:31.990 I'm going to consider them secondary attributes as they will be dependent on other attributes. 12:32.110 --> 12:38.650 Next, I went into the CPP file and added the definitions for each rep. 12:38.650 --> 12:46.690 Notify using the boilerplate gameplay attribute rep notify so we can inform the ability system of the 12:46.690 --> 12:53.440 replication and of course added each of the secondary attributes here and get lifetime replicated props, 12:53.650 --> 12:56.470 making sure to specify each one. 12:56.470 --> 13:00.970 And now we have those attributes set to replicate. 13:01.000 --> 13:03.400 So really for key steps. 13:03.400 --> 13:04.150 Right? 13:04.150 --> 13:06.430 First declare the variable. 13:06.670 --> 13:11.110 Next use the rep, notify or create one. 13:11.110 --> 13:18.490 Make sure the rep notify has the gameplay attribute rep notify macro and then add that rep notify to 13:18.490 --> 13:20.080 get lifetime replicated props. 13:20.080 --> 13:21.340 So it's replicated. 13:21.340 --> 13:28.600 And now we have our new secondary attributes and these are going to be based on the other attributes. 13:28.600 --> 13:35.920 We know how we can apply an effect that's based on other attributes, but we want these attributes to 13:35.920 --> 13:38.710 always be affected by any other attribute. 13:38.740 --> 13:44.710 We want them to change when they're backing attributes are changed, and we're going to do that next. 13:44.710 --> 13:47.380 So great job and I'll see you soon.