WEBVTT 00:00.200 --> 00:00.740 Hello guys. 00:00.740 --> 00:01.730 Welcome to the video. 00:01.730 --> 00:04.460 And finally we have to set up movement of the player. 00:04.460 --> 00:05.990 I'm very happy about it. 00:05.990 --> 00:08.330 Let's do it right now. 00:08.330 --> 00:12.830 It's going to be not that difficult because actually we did something similar in the first section of 00:12.830 --> 00:13.670 this course. 00:13.670 --> 00:15.380 Let's go to player now. 00:17.810 --> 00:24.950 And here we need to save input that we have from a keyboard and then apply it to the movement together 00:24.950 --> 00:26.000 with the move speed. 00:26.030 --> 00:28.160 You can edit input before. 00:28.160 --> 00:32.000 If you remember we typed input dot get axis horizontal. 00:32.000 --> 00:38.510 But now I want to store this input in a variable so I can use it across different places in the script. 00:38.690 --> 00:44.690 Let's make uh, let's make public float first because I want to see the while I'm testing it. 00:44.690 --> 00:46.070 And then we're going to make it private. 00:46.070 --> 00:48.920 So it's going to be private float X input. 00:48.920 --> 00:50.660 And then in the update. 00:51.480 --> 00:54.510 We can do x input equals to. 00:55.280 --> 00:56.090 Input. 00:57.250 --> 00:58.720 Get access. 00:59.870 --> 01:01.340 Horizontal. 01:03.810 --> 01:05.190 Now let's save this. 01:07.110 --> 01:08.550 Go back to unity. 01:10.220 --> 01:18.440 We have x input which is zero, and if we press x input like add or arrow keys, we can see that value 01:18.440 --> 01:22.790 is changing from 0 to 1 or to minus one. 01:22.790 --> 01:26.810 And we can see it slowly grows or slowly decreases to the needed value. 01:26.810 --> 01:30.290 So it's like does not become 1 or -1 immediately. 01:30.290 --> 01:36.890 This will uh, result a movement where player is speeding up slowly, which I don't really want to have. 01:36.890 --> 01:40.190 I want to have quick, snappy, responsive movement. 01:40.340 --> 01:44.810 And because of that we're going to use get axis row over here. 01:44.810 --> 01:46.130 We're going to type row. 01:46.130 --> 01:55.130 And now if you save this and try this again you will see that x input is changing to the -1 or 1 immediately. 01:55.130 --> 01:58.490 Without that gradual change you can see one minus one. 01:58.490 --> 02:04.130 This is very good for us because I want to have snappy, responsive controls on this platformer. 02:04.130 --> 02:06.260 Now let's go back to player. 02:07.110 --> 02:10.590 And use this input to move the character. 02:10.590 --> 02:14.430 I'll just have to make it private because I don't need to see it anymore. 02:14.430 --> 02:15.690 We know how it works. 02:16.050 --> 02:24.870 And in the update we're going to use RB dot velocity equals to new vector two x input. 02:24.870 --> 02:28.890 And for the y we're going to use rb velocity dot y itself. 02:28.890 --> 02:30.390 Let's just try it first. 02:30.390 --> 02:32.400 And then I'm going to explain what we did here. 02:32.400 --> 02:33.660 Let's go to play mode. 02:40.000 --> 02:46.390 And I can move to the left or to the right very slowly, but I'm moving, which is very cool. 02:46.420 --> 02:48.820 Now what actually just happened? 02:49.590 --> 02:53.730 Um, RB is a rigid body component, which we discussed before. 02:53.760 --> 03:01.350 So by getting a component over here, we basically say that this RB is this rigid body over here. 03:01.350 --> 03:07.260 And then when we type in RB in the update, we basically say, hey you rigid body, listen to me. 03:07.260 --> 03:12.210 And then we set dot velocity and we control velocity of that rigid body. 03:12.240 --> 03:15.420 Now why do we set it to vector two. 03:15.450 --> 03:18.780 That is a very simple question with a very simple answer. 03:18.810 --> 03:22.290 Everything in 2D world works with a vector two. 03:22.320 --> 03:26.220 I actually have a good video that explains how vector two is working. 03:26.220 --> 03:30.210 So maybe I will attach link to this lecture and you can just check it. 03:30.210 --> 03:32.040 It's a really nice one I think. 03:32.340 --> 03:38.400 But shortly I'll explain that you can see only two vectors y and x. 03:39.240 --> 03:40.710 And the rule is simple. 03:40.920 --> 03:43.140 You want to move, object to the right. 03:43.140 --> 03:46.050 Change his position on the X, make it bigger. 03:46.050 --> 03:47.340 It will move to the right. 03:47.340 --> 03:48.720 Make it lower. 03:48.720 --> 03:49.740 It will move to the left. 03:49.740 --> 03:52.530 Because this is how vector two is working, right? 03:52.530 --> 03:55.800 We have x y and it goes that side. 03:55.800 --> 04:01.770 So 123 minus one minus two minus three. 04:01.770 --> 04:06.180 Same for the Y123 minus one minus two minus three. 04:06.210 --> 04:07.200 You want character. 04:07.200 --> 04:08.160 Move to the right. 04:08.160 --> 04:13.620 Change his velocity or position and make it x something like a positive value. 04:13.620 --> 04:14.880 You want to move it to the left. 04:14.880 --> 04:18.630 Make it minus x, something like minus four, minus three and so on. 04:18.630 --> 04:24.090 And velocity of the rigid body always wants to know in which direction it's supposed to move. 04:24.210 --> 04:30.840 And by saying that we change only x in the vector two, it knows that we applying. 04:31.840 --> 04:34.330 Vector one over here. 04:34.330 --> 04:37.660 And that's why it moves to the right or minus one over here. 04:37.660 --> 04:39.220 And that's why it moves to the left. 04:39.670 --> 04:45.430 Regarding the Y over here, even though we don't want to change velocity on the Y, we only want to 04:45.430 --> 04:47.050 have horizontal movement. 04:47.080 --> 04:53.920 We cannot type zero here because if you type zero here, it means you're trying to set velocity of the 04:53.920 --> 04:56.500 y to the zero, which we don't really need. 04:56.500 --> 04:59.140 We only want to change one velocity on the x. 04:59.140 --> 05:05.860 Because of that, we type in our velocity dot y because in this way it will take an x input as the x 05:05.860 --> 05:06.610 velocity. 05:06.610 --> 05:11.350 But y velocity will be unchanged because it will take its own velocity. 05:11.380 --> 05:17.290 You can say we python just hey, take the same velocity, don't change anything for the y, but for 05:17.290 --> 05:20.200 the x input use this value over here. 05:20.940 --> 05:22.260 Simple as that. 05:22.410 --> 05:23.160 Yeah. 05:24.540 --> 05:26.910 Well, that's actually was faster than I expected. 05:26.940 --> 05:30.390 Now we want to control speed of the character. 05:30.390 --> 05:35.850 And because of that, we can just take this x input and multiply it by move speed. 05:35.850 --> 05:36.840 We have over there. 05:36.840 --> 05:39.660 Let's do multiply move speed. 05:42.440 --> 05:45.230 Now we can go back to unity and try this out. 05:48.820 --> 05:51.340 Let's just go to play mode. 05:51.340 --> 05:58.120 And now, if you'll try to move, nothing will happen because your move speed is zero and we are multiplying 05:58.120 --> 06:01.900 x input by zero, which results a zero. 06:01.930 --> 06:06.820 Let's go back and change move speed to something like four and try to move now. 06:06.820 --> 06:08.710 And he moves faster. 06:08.710 --> 06:09.640 He's responsible. 06:09.640 --> 06:12.610 He's moving which I really, really like. 06:12.610 --> 06:13.630 Very cool. 06:14.730 --> 06:15.390 Yay! 06:15.480 --> 06:16.710 We can make him faster. 06:16.710 --> 06:19.710 Maybe eight, and this will work as well. 06:20.760 --> 06:21.480 Very nice. 06:21.480 --> 06:27.450 Now there are other things we need to change for the movement, but I think this will be enough for 06:27.450 --> 06:27.960 this video. 06:27.960 --> 06:30.210 I know it was very short and we didn't do much. 06:30.210 --> 06:33.360 Maybe let's do a bit of a clean up and then we're going to jump to the next one. 06:33.360 --> 06:35.400 We're going to set up visuals for the movement. 06:35.400 --> 06:40.830 We can make a method to make our script cleaner from the start. 06:43.340 --> 06:44.900 Okay, so let's make a method. 06:44.900 --> 06:46.460 And this is how you make a method. 06:46.460 --> 06:49.550 You just go outside of a curly brackets of another method. 06:49.550 --> 06:53.270 But be sure you are within curly brackets of the class. 06:53.270 --> 06:56.390 And then you type here private void. 06:56.390 --> 06:57.680 Let's give it a name. 06:57.680 --> 07:00.860 For example handle movement. 07:01.410 --> 07:05.310 And press shift enter and it will open curly brackets for you. 07:05.340 --> 07:07.740 Now we can take this line of code. 07:07.740 --> 07:10.440 Just cut it out and paste it in here. 07:11.010 --> 07:15.810 And this method will now be responsible for the movement of the player. 07:15.840 --> 07:19.200 This will execute this line of code. 07:19.200 --> 07:22.140 But as you can see this method is not highlighted. 07:22.140 --> 07:24.090 So it is not working now. 07:24.090 --> 07:25.290 It will do nothing. 07:25.440 --> 07:26.850 Actually we can try that. 07:26.850 --> 07:28.470 We can go back to player. 07:28.470 --> 07:30.150 We can go back to play mode. 07:30.990 --> 07:35.550 Let's change the mode speed to four and in the play mode. 07:36.520 --> 07:43.510 You'll see he is not moving and we have more speed for that is happening because this function is not 07:43.510 --> 07:44.500 called anywhere. 07:44.500 --> 07:49.870 And to call this function, uh, all the time, because we want to apply movement all the time, we 07:49.870 --> 07:53.560 need to type it in the update like that. 07:53.560 --> 07:55.120 Handle movement. 07:55.120 --> 07:56.650 Now it will work. 07:56.650 --> 07:58.030 Let's go and try again. 08:06.410 --> 08:08.660 And today we can move. 08:08.660 --> 08:11.150 Super cool right now. 08:11.150 --> 08:14.240 Let's go back and see if we can do anything else. 08:14.240 --> 08:16.610 We actually can do something else. 08:16.610 --> 08:22.460 We could make another method for the input to make it even cleaner, but as of now it's not that important. 08:22.460 --> 08:24.650 So let's just leave it as it is. 08:24.650 --> 08:26.690 We're going to take care of it later on. 08:26.690 --> 08:30.410 Let's save the file and let's go to the next video.