WEBVTT 00:00.020 --> 00:00.560 Hello guys. 00:00.560 --> 00:01.550 Welcome to the video. 00:01.550 --> 00:04.190 In this one I want to add a bit of a functionality. 00:04.190 --> 00:06.590 And what I want to do is something simple. 00:06.590 --> 00:09.560 It is a double jump ability for the player. 00:09.560 --> 00:14.210 First of all, let's balance our gravity scale and jump force just a bit. 00:14.210 --> 00:19.460 Actually, I know what values I want to have and you can just take my values and continue with development. 00:19.460 --> 00:23.390 Or you can try your values and it's going to be just okay as well. 00:23.390 --> 00:28.490 It's all about, you know, balancing the values and finding the right feeling that you want to have. 00:28.490 --> 00:33.800 It's quite difficult to find the sweet spot for it, but I'm pretty satisfied with what I have here. 00:33.800 --> 00:36.590 So I'm going to use Gravity Scale 4.5. 00:36.800 --> 00:40.820 And over here jump four is going to be 14. 00:40.820 --> 00:42.380 Now let me try to jump. 00:42.380 --> 00:43.790 And this is how it feels. 00:43.790 --> 00:45.290 And I think I like it. 00:46.330 --> 00:47.080 Okay. 00:47.080 --> 00:47.710 Very good. 00:47.740 --> 00:50.200 There is also one parameter I want to tell you about. 00:50.200 --> 00:57.610 It is a linear drag, and this one is basically responsible for the air resistance. 00:57.610 --> 01:02.860 If you increase this value, it's going to feel like character is resisting something. 01:02.860 --> 01:04.720 Let's just try to put one over here. 01:04.720 --> 01:09.400 You can see movement feels a bit different now and walking as well. 01:09.400 --> 01:12.340 So here it is up to you if you want to use it or not. 01:12.340 --> 01:13.990 By the way, I like how it feels. 01:13.990 --> 01:15.430 Yeah, I think I like it. 01:15.430 --> 01:16.600 I'm going to keep it. 01:17.020 --> 01:17.860 Why not? 01:20.660 --> 01:21.920 So he can jump. 01:21.920 --> 01:24.200 And I wish we would have a double jump right now. 01:24.200 --> 01:25.640 So that's what we're going to do. 01:25.640 --> 01:34.250 First, let's go out of a play mode, set gravity scale to 4.5, linear drag to one, and jump force 01:34.250 --> 01:35.570 to 14. 01:37.440 --> 01:38.100 Nice. 01:38.100 --> 01:40.500 Now let's go ahead and add double jump. 01:40.530 --> 01:42.510 It's going to be not that difficult to do. 01:43.280 --> 01:43.610 The first. 01:43.610 --> 01:45.590 I want to show you how we're going to make the functionality. 01:45.590 --> 01:46.820 Then we're going to clean it up. 01:46.820 --> 01:50.330 Let's just make a public bool. 01:51.290 --> 01:53.690 Can double jump. 01:53.720 --> 01:55.700 For now, that's all what we're going to have. 01:55.700 --> 02:01.070 And then we're going to go all the way here where we have jump method and handle input. 02:01.070 --> 02:03.410 And I want to change how it's written just a bit. 02:03.410 --> 02:09.230 So as of now when we press on the key, we also check if player is grounded and if he is grounded and 02:09.230 --> 02:10.850 we press the key, we jump. 02:10.850 --> 02:17.240 However, later on we're going to have a double jump and also a wall jump, and I don't want to do conditions 02:17.240 --> 02:19.520 for all of that in one if statement. 02:19.520 --> 02:22.100 That would be a very cluttered if statement. 02:22.100 --> 02:27.380 So instead, I want to make a method that would be something like a jump button, which you're going 02:27.380 --> 02:29.780 to be called every time you press the space key. 02:29.780 --> 02:34.190 And then any checks we want to do for the jump, we're going to do inside of this jump button. 02:34.190 --> 02:35.360 So let's make. 02:36.260 --> 02:39.590 Private void jump button here. 02:39.920 --> 02:46.190 And inside of this method we're going to check if is grounded then jump. 02:46.860 --> 02:54.510 So now, because of that, we can remove this check over here and instead of jump we can call jump button. 02:55.220 --> 02:58.010 So basically it's just like space key is a jump button. 02:58.010 --> 03:02.000 Just call the method and whatever checks we need to do, do it inside of the method. 03:02.030 --> 03:08.180 Now we're going to type here elseif which basically adds another if check if condition for the first 03:08.180 --> 03:11.270 one was not met, then we're going to move to another if check. 03:11.270 --> 03:18.230 And over here we want to check if can double jump true then we're going to do jump. 03:19.270 --> 03:22.240 And we're going to make can double jump equals to false. 03:22.270 --> 03:24.430 And maybe let's open curly brackets over here. 03:24.430 --> 03:25.570 So it's pretty. 03:26.200 --> 03:26.740 Okay. 03:27.100 --> 03:32.170 So this is what we have now when we press in the button we check first if we ground it and we can jump. 03:32.170 --> 03:36.610 If we're not grounded we're going to be in the air and we're going to check the boolean itself. 03:36.970 --> 03:40.720 Let's go ahead back to unity and try this out. 03:41.890 --> 03:43.510 We're going to go to play mode. 03:45.070 --> 03:47.710 And we can see that over here. 03:47.710 --> 03:48.880 Boolean is false. 03:48.880 --> 03:49.810 So I'm going to click it. 03:49.810 --> 03:50.860 So it's true. 03:50.860 --> 03:53.320 And I'm going to jump once and again. 03:53.320 --> 03:55.360 And now I cannot do a double jump. 03:55.360 --> 03:57.070 And we need to fix it right. 03:57.070 --> 03:58.270 That's what we need to do. 03:58.270 --> 03:59.740 How are we going to fix it. 03:59.920 --> 04:05.950 Uh somehow we need to know when player touched the ground so we can reset, can double jump value and 04:05.950 --> 04:06.850 make it true again. 04:06.850 --> 04:11.440 So double jump is available for the next, you know, player's action. 04:11.530 --> 04:13.570 And we're going to go to player script. 04:13.570 --> 04:17.770 And we're going to make some sort of check if player is in the air. 04:17.770 --> 04:22.900 Once he's in the air and he touches the ground, we're going to say, hey, we just landed and we're 04:22.900 --> 04:26.020 going to do some functionality like resetting, double jump and so on. 04:26.020 --> 04:31.540 Let's go above over here and let's add private boolean. 04:33.170 --> 04:36.470 Uays airborne, which means in the air. 04:36.620 --> 04:40.220 And then in the update we're going to do a simple check. 04:40.220 --> 04:47.960 If not is grounded, which says we are not on the ground and Boolean is airborne is not true, then 04:47.960 --> 04:48.980 we're going to make. 04:49.750 --> 04:51.760 Is airborne equals to true. 04:51.760 --> 04:54.370 And this will make character an airborne. 04:54.370 --> 05:00.820 And just before that we want to check if is airborne and. 05:01.910 --> 05:06.200 Is grounded, then is airborne equals to false. 05:06.200 --> 05:10.910 I know it's kind of confusing, but let's just do it and I'll try to explain it as much as I can. 05:10.910 --> 05:14.630 Okay, let's save this and let's go to unity and see it. 05:20.060 --> 05:26.120 I'm going to go to debug mode, and in the play mode we can see his airborne is false. 05:26.120 --> 05:31.010 When I jump becomes true and when I'm on the ground it becomes false again. 05:31.010 --> 05:35.390 Basically we just switching them between is grounded and is airborne. 05:35.600 --> 05:39.710 Of course we could use only one boolean, but we need to do some sort of reset. 05:39.710 --> 05:42.170 And that's why we use the second boolean. 05:42.260 --> 05:44.990 Let's go back to normal mode and play script. 05:44.990 --> 05:50.150 And I'll just try to explain it real quick in case it's confusing, because I think it might be. 05:50.150 --> 05:57.020 And actually maybe it will be a bit easier to understand if we do it like so is grounded and is airborne. 05:57.890 --> 06:02.150 So we update the second boolean according to the first boolean we have. 06:02.150 --> 06:05.090 If we are grounded, then airborne should be false. 06:05.090 --> 06:08.090 If we are not grounded, then airborne should be true. 06:08.090 --> 06:13.340 And the second boolean in this if statement is just there to make it work only once, because we need 06:13.340 --> 06:14.840 to do reset only once. 06:14.840 --> 06:18.170 Simple as that is grounded, then airborne should be false. 06:18.170 --> 06:21.860 If it's a true, then make it false if not grounded. 06:22.830 --> 06:24.630 Then airborne should be true. 06:24.630 --> 06:26.580 If it's not true, then make it true. 06:26.610 --> 06:27.540 This is the logic. 06:27.540 --> 06:30.390 Now I want to take these four lines of code. 06:30.390 --> 06:38.040 Click right button Quick Actions and choose Extract Method and I'm going to name it as update. 06:39.610 --> 06:42.010 Airborne status. 06:43.350 --> 06:45.210 Yeah, this is very useful for us. 06:45.210 --> 06:48.930 We just want to, uh, add a bit more meaning to this. 06:49.440 --> 06:51.720 We're going to do that by making another method. 06:51.720 --> 06:59.670 Let's take this line of code, press alt enter extract method and call it handle Lending. 07:00.470 --> 07:04.580 Now, whenever you need to do something, whenever you need to do something, when character lands on 07:04.580 --> 07:05.720 the ground, you can do it. 07:05.720 --> 07:06.800 Inside of this method. 07:06.800 --> 07:10.550 For example, you can say can double jump equals to true. 07:12.360 --> 07:15.780 Uh, let's go ahead and try this again. 07:22.320 --> 07:23.310 I'm going to jump. 07:23.310 --> 07:24.900 Double jump and I'm landing. 07:24.900 --> 07:26.880 Jump, double jump and I'm landing. 07:29.480 --> 07:30.170 Call rate. 07:31.680 --> 07:35.820 Very simple and very clean logic, I believe. 07:36.060 --> 07:39.030 Although it might be a bit confusing if you see it for the first time. 07:39.030 --> 07:44.580 Also, for better understanding, let's change this method from is airborne true to. 07:46.210 --> 07:47.890 Let's do extract method. 07:48.920 --> 07:51.170 Become airborne. 07:54.500 --> 08:00.170 So whenever you need to do something, when you go off the ground, you can do it over here whenever 08:00.170 --> 08:01.010 you need to do something. 08:01.010 --> 08:03.980 When you're lending, you can do it in this method. 08:03.980 --> 08:04.730 Very nice. 08:04.730 --> 08:06.830 Now let's improve the double jump. 08:07.910 --> 08:08.990 There's going to be closed for now. 08:08.990 --> 08:13.040 We're not going to touch it for a while on the jump button over here. 08:13.040 --> 08:15.590 We're just doing a simple jump just as before. 08:15.590 --> 08:21.050 But actually I want to have a double jump method that will use different jump force. 08:21.050 --> 08:24.170 This will help us to achieve better feeling for the game. 08:24.470 --> 08:29.870 And that's why I want to go over here and make Private Void double jump. 08:30.770 --> 08:37.010 In which we're going to take our velocity equals to a new vector two rb velocity dot x. 08:37.010 --> 08:41.060 And for the jump force we actually need to make a variable that I forgot to do. 08:41.540 --> 08:44.120 Uh, let's go above over here. 08:46.200 --> 08:46.920 Over here. 08:46.920 --> 08:48.690 We can do header. 08:49.520 --> 08:53.180 Double jump and then sterilize field. 08:53.720 --> 08:54.770 Private float. 08:54.770 --> 08:57.680 Double jump horse. 08:58.100 --> 08:58.970 Nice. 08:58.970 --> 09:01.850 Let's save this and let's go back. 09:04.980 --> 09:07.440 And use double jump force for the Y. 09:09.380 --> 09:15.710 And also when we're doing this jump we want to set can double jump to false now because we need it here. 09:15.710 --> 09:17.930 We don't need to type this here anymore. 09:17.930 --> 09:21.500 We can just replace it with a double jump. 09:24.450 --> 09:25.500 Just like that. 09:25.950 --> 09:27.120 Very cool rate. 09:27.150 --> 09:28.410 Yeah, I think so. 09:30.150 --> 09:31.680 Well, I hope you do think so. 09:32.220 --> 09:32.760 Um. 09:34.220 --> 09:36.830 Let's go ahead and see this in the action. 09:36.830 --> 09:40.370 And actually I think I want to remove the linear drag here. 09:40.370 --> 09:41.030 I'm sorry. 09:41.030 --> 09:42.440 Let's make it zero. 09:43.980 --> 09:49.290 Now on the player script, we have jump force and double jump force, and I believe the second jump 09:49.290 --> 09:51.300 should not be as powerful as the first one. 09:51.300 --> 09:53.910 So I'm going to make it maybe 12 or 10. 09:53.910 --> 09:58.710 It should be sort of an extra hop, but not the double jump that you can abuse. 09:58.710 --> 10:02.670 It's just going to be there to save yourself in a tricky situation. 10:02.670 --> 10:04.140 Okay, let's go to play mode. 10:05.290 --> 10:07.540 And I'm going to make another platform. 10:08.910 --> 10:10.110 Can I jump here? 10:10.110 --> 10:13.320 Yes, I can now let me bring this up. 10:13.320 --> 10:14.280 Like so. 10:14.340 --> 10:17.820 Can I jump here now I cannot, but what if I do double jump? 10:19.090 --> 10:20.080 And I'll jump there. 10:21.410 --> 10:22.280 Yay! 10:22.970 --> 10:23.600 Nice. 10:23.600 --> 10:25.400 So I sort of like it. 10:25.400 --> 10:27.530 And of course we can rebalance it later on. 10:27.530 --> 10:29.240 But as of now, I think this is good. 10:29.270 --> 10:32.690 I would only increase the move speed for the player. 10:32.690 --> 10:37.580 Let's make it eight and maybe let's do jump force for double jump 11. 10:39.420 --> 10:40.740 Let me try again. 10:42.030 --> 10:44.370 Yeah, this feels nice, I like it. 10:49.870 --> 10:52.540 Uh, don't worry about player being sticky with the walls. 10:52.540 --> 10:53.890 We're going to fix it later on. 10:55.720 --> 10:56.350 Okay. 10:56.350 --> 10:57.430 Very good. 10:57.580 --> 11:02.440 Now let's go to the player script and do something here. 11:03.950 --> 11:08.240 First of all, I think we can hide this boolean with the need it anymore. 11:08.240 --> 11:15.260 We know it works and I think we can do something like, like double jump details over here and. 11:15.930 --> 11:18.210 Movement details over here. 11:18.210 --> 11:19.260 And. 11:19.830 --> 11:22.110 Should we actually just make one header for this? 11:22.110 --> 11:25.350 Because there's just only one variable I think. 11:25.350 --> 11:25.710 Yeah. 11:25.710 --> 11:29.490 Let's just do it like so let's remove this header. 11:31.380 --> 11:34.500 And yeah, that's probably it for now. 11:34.500 --> 11:35.610 Let me save it. 11:35.610 --> 11:38.460 Let me check these things over here. 11:40.990 --> 11:46.450 We could name it as handle airborne status, but I want to keep the update word because we updating 11:46.450 --> 11:46.840 the value. 11:46.840 --> 11:49.510 So that's my crazy logic. 11:49.540 --> 11:51.190 All right this is good. 11:51.190 --> 11:53.290 Thank you so much for paying attention. 11:53.290 --> 11:55.030 And I'll see you in the next video.