WEBVTT 00:00.050 --> 00:00.560 Hello guys. 00:00.560 --> 00:01.520 Welcome to the video. 00:01.520 --> 00:06.470 So in this one I want to make a buffer jump functionality and to understand it better. 00:06.470 --> 00:09.800 First I want to show you what it does because it's quite confusing actually. 00:09.800 --> 00:11.180 But it is very helpful. 00:11.180 --> 00:15.050 I already made it and I'm going to erase everything and show you how to make it from the start. 00:15.050 --> 00:16.190 But first I want you to see it. 00:16.190 --> 00:17.810 Now look how this works. 00:17.810 --> 00:21.320 I can jump and when I'm falling I can press the jump key. 00:21.320 --> 00:28.280 But if I press the jump key before I land it, this will mean that I pressed the key too early and character 00:28.280 --> 00:30.440 will land on the ground. 00:30.440 --> 00:32.990 He'll lose his velocity and he'll jump again. 00:32.990 --> 00:34.940 Only when we press the jump button again. 00:34.940 --> 00:41.240 But buffer jump allows you to sort of save the input of a space key, and it will bounce off the ground 00:41.240 --> 00:44.510 automatically if you press the button just before you land it. 00:44.510 --> 00:45.920 Something like this will do. 00:46.610 --> 00:49.700 You can see I'm pressing button earlier than I landed. 00:51.080 --> 00:52.820 But I bounced off the ground. 00:53.830 --> 01:01.540 So this one helps to not lose, you know, the velocity and movement and fluent lessness of the movement 01:01.540 --> 01:02.350 of the character. 01:02.350 --> 01:07.630 And also it feels like you are really skilled player and you just press the jump button at the right 01:07.660 --> 01:09.070 time just before you land it. 01:09.070 --> 01:10.600 And that's why you are hopping like that. 01:10.600 --> 01:13.540 But actually it's just a functionality that we made. 01:13.900 --> 01:17.500 You can see how cool it looks and I'm telling you, it feels cool as well. 01:17.500 --> 01:20.890 It feels like I'm doing something right and I just know the character so well. 01:20.890 --> 01:24.520 But actually, it's just, you know, the scripting there helps us do it. 01:24.520 --> 01:30.100 This is how it's going to be if I disable this functionality, you can see how I am not always timing 01:30.100 --> 01:30.940 it, right? 01:32.240 --> 01:37.340 And I'm still a bit running on the ground even I press the button buffer jump allows you to do that. 01:37.340 --> 01:38.630 Hope that I just showed you. 01:38.630 --> 01:39.500 Now let's do it. 01:39.500 --> 01:47.540 So for the buffer jump, we need to know the window during which character still can jump after the 01:47.540 --> 01:48.560 button was pressed. 01:48.560 --> 01:51.890 For that, we need to save the time when button was pressed. 01:51.890 --> 01:58.730 Luckily for us, there is such thing as time dot time, which tells you time in the game and we can 01:58.730 --> 02:04.310 make a variable like a float variable, and then we can save time in the game into that variable. 02:04.310 --> 02:05.720 Let's make a header. 02:06.580 --> 02:08.320 Buffer jump. 02:08.440 --> 02:10.870 And let's make a public for now. 02:10.870 --> 02:11.800 Public float. 02:11.800 --> 02:14.170 Buffer jump pressed. 02:14.350 --> 02:16.510 So when buffer jump was pressed okay. 02:16.810 --> 02:23.620 Now let's go somewhere here I'm going to make a method private void request. 02:25.890 --> 02:32.220 Buffer jump and this method will check if we are in the air is airborne. 02:33.820 --> 02:37.600 Then buffer jump rest equals to time dot time. 02:37.600 --> 02:43.090 If you put your mouse over this time dot time, you can see it says the time at the beginning of the 02:43.090 --> 02:47.320 current frame in seconds since the start of the application. 02:47.320 --> 02:51.880 So basically it's just time in the game and we saving this time to this variable. 02:52.030 --> 02:54.670 Let's go to the space input over here. 02:54.670 --> 02:58.900 And let's request a buffer jump here I'm going to save this. 02:58.900 --> 03:04.150 And we're going to go back to unity and see it in the action okay I'm going to just jump. 03:04.450 --> 03:09.160 And we can see we updating value over here when it was requested. 03:11.120 --> 03:12.170 Here is the value. 03:12.170 --> 03:16.550 So it was requested at 11 seconds of time in the game. 03:17.060 --> 03:20.480 Now we can use this value to activate the buffer jump. 03:20.480 --> 03:23.420 We just need to see if the time that was saved. 03:23.420 --> 03:28.160 Plus the window for the buffer jump is bigger than the current time in the game. 03:28.160 --> 03:32.480 Let's go to the player script and let's make a method. 03:33.190 --> 03:34.330 Private void. 03:35.330 --> 03:36.140 Buffer. 03:37.120 --> 03:38.140 Attempt. 03:39.000 --> 03:41.520 Buffer jump. 03:41.790 --> 03:43.980 Now we need the window. 03:43.980 --> 03:50.070 We need to know for how long we can do the buffer jump, like, during the, uh, couple of seconds 03:50.070 --> 03:51.120 or less than that. 03:51.120 --> 03:52.950 So we're going to do sterilize field. 03:53.780 --> 03:57.170 I'd float buffer, jump window. 03:57.170 --> 04:01.070 And actually I know that good value is point 25. 04:01.070 --> 04:02.570 So I'm going to keep this value. 04:02.570 --> 04:03.980 And this now can be private. 04:03.980 --> 04:05.180 We know what it does. 04:05.180 --> 04:07.760 It's going to have the time when button was pressed. 04:09.490 --> 04:11.020 And now let's go back. 04:11.780 --> 04:12.860 To that method. 04:12.860 --> 04:13.670 Where is it? 04:14.950 --> 04:16.090 Attempt buffer jump. 04:16.090 --> 04:20.440 And here we're going to see if current time in the game is less than time. 04:20.440 --> 04:21.940 When button was pressed. 04:21.940 --> 04:27.040 Plus, the window we created means we still have time to do buffer jump. 04:27.040 --> 04:31.810 And if that's the case, we're going to call jump method and we want to take the buffer jump pressed 04:31.810 --> 04:33.550 and sort of reset it. 04:33.550 --> 04:36.550 We're going to set it to something like zero maybe. 04:36.550 --> 04:40.630 And if we do this then this will not be bigger than time dot time anymore. 04:40.630 --> 04:42.280 And this will work only once. 04:42.280 --> 04:44.020 So it's sort of like a boolean. 04:44.320 --> 04:49.210 Now let's go to the function where we do landing handle landing. 04:49.570 --> 04:53.320 And over here we're going to do attempt buffer jump. 04:53.590 --> 04:57.880 And to make it easier to test I'm going to disable double jump for now okay. 04:58.270 --> 04:59.440 Let's save this. 04:59.440 --> 05:00.520 Let's go back. 05:05.530 --> 05:07.120 Let's go to play mode. 05:08.980 --> 05:10.480 And I'm going to jump. 05:11.230 --> 05:12.910 And I can do the buffer jump. 05:13.770 --> 05:18.810 If you feel like this is too easy to do, you can decrease the value over here to something like 0.1 05:18.810 --> 05:22.950 and it's going to be a bit harder to time the buffer jump, but still possible. 05:24.150 --> 05:25.920 And you can hop like that around. 05:27.150 --> 05:29.280 He doesn't mean you must have this functionality. 05:29.280 --> 05:32.850 It's just one of the ways to improve feeling in the platformer game. 05:33.810 --> 05:34.560 Uh, yeah. 05:34.560 --> 05:36.660 So I'm going to bring back the double jump. 05:40.770 --> 05:41.850 There is this glitch. 05:41.850 --> 05:45.930 When character jumps off the ground right at the start, it is very easy to fix. 05:45.930 --> 05:51.570 We just need to go to the player and make buffer jump activated equals to minus one. 05:51.570 --> 05:52.680 Something like that. 05:54.830 --> 05:57.020 So it will never be true at the start. 05:57.290 --> 06:01.250 Let's make buffer jump window 0.25 and we're good to go. 06:01.280 --> 06:02.540 Thank you for paying attention. 06:02.540 --> 06:04.160 I'll see you in the next video.