1 00:00:03,210 --> 00:00:03,690 Hello again. 2 00:00:03,690 --> 00:00:07,710 In this lecture, we're going to write our first piece of code in Visual Studio code, and we're going 3 00:00:07,710 --> 00:00:12,120 to print it out to the console, a witty, funny statement that our character might be saying in our 4 00:00:12,120 --> 00:00:12,990 platform a game. 5 00:00:12,990 --> 00:00:14,240 So let's get started. 6 00:00:14,250 --> 00:00:20,430 First step in this process is to make sure that Unity knows that the correct ID is the one we're looking 7 00:00:20,430 --> 00:00:20,580 at. 8 00:00:20,580 --> 00:00:25,410 So I'm going to go up to edit and then find preferences down near the bottom, a few up from the bottom. 9 00:00:25,410 --> 00:00:30,720 Actually, in here we're looking for over on the left hand side, you'll see external tools. 10 00:00:30,720 --> 00:00:36,180 Within external tools, you can see the external script editor, the very first option up there. 11 00:00:36,180 --> 00:00:40,020 Make sure it says whichever editor you're using, I'm using Visual Studio code. 12 00:00:40,020 --> 00:00:44,940 That means that any time we say, Hey, open one of our scripts, it will use Visual Studio code to 13 00:00:44,940 --> 00:00:45,330 open it. 14 00:00:45,330 --> 00:00:48,990 So that's what we'll do next in the project area. 15 00:00:48,990 --> 00:00:54,450 So in the project tab down here, this big open space, I'm going to right click and click on Create 16 00:00:54,480 --> 00:00:55,590 C-sharp script. 17 00:00:55,590 --> 00:00:59,640 Now before you click on C-sharp script, just watch what I'm doing here because there's an important 18 00:00:59,640 --> 00:01:00,150 lesson here. 19 00:01:00,150 --> 00:01:01,890 So I'm going to do this watch for a second. 20 00:01:01,890 --> 00:01:06,240 You can see it's highlighted our new behavior, something in there can't see the rest of it. 21 00:01:06,240 --> 00:01:13,350 But before I click anywhere else, I'm going to type in my name, which will be print to console. 22 00:01:13,530 --> 00:01:15,390 That's the name of my script. 23 00:01:15,390 --> 00:01:17,670 So print to console and I'm using camel case. 24 00:01:17,670 --> 00:01:18,510 That's the convention. 25 00:01:18,510 --> 00:01:25,260 So a capital P, capital T, capital C or upper case PTC for print to console and hit enter. 26 00:01:25,500 --> 00:01:28,260 Now if I click on this, my script is here. 27 00:01:28,260 --> 00:01:30,990 You can see we get a little preview within unity. 28 00:01:30,990 --> 00:01:31,890 It's not super useful. 29 00:01:31,890 --> 00:01:33,060 We can't edit it in here. 30 00:01:33,060 --> 00:01:34,320 We can't do anything with it. 31 00:01:34,320 --> 00:01:36,300 That's what we need our ID for. 32 00:01:36,300 --> 00:01:39,120 But this will allow us just to see what's in this script. 33 00:01:39,120 --> 00:01:42,750 And you can see it says public class print to console. 34 00:01:42,750 --> 00:01:46,890 We'll get into what classes are in the future, but for now we just need to know this has printed console. 35 00:01:46,890 --> 00:01:51,720 Let me show you what can go wrong if you click elsewhere while you're doing this so you don't need to 36 00:01:51,720 --> 00:01:53,040 follow along in this particular bit. 37 00:01:53,040 --> 00:01:55,380 Right click Create C-sharp script. 38 00:01:55,380 --> 00:02:00,000 Now if I click to the anywhere else, it will bake in New Behavior script. 39 00:02:00,000 --> 00:02:05,250 And if I go to change this name in the future, so change it to something else. 40 00:02:05,790 --> 00:02:11,610 When I click on my script, see the preview, you can see it says Still Says New Behavior script. 41 00:02:11,610 --> 00:02:16,680 The fact that the class name new behavior script is different from the file name means that we're going 42 00:02:16,680 --> 00:02:18,180 to get all sorts of issues. 43 00:02:18,180 --> 00:02:21,840 I just wanted to show you that whole process because I know sometimes we accidentally click somewhere 44 00:02:21,840 --> 00:02:24,270 else and then you get all these errors and you're not sure why. 45 00:02:24,270 --> 00:02:26,430 So I'm going to delete my something else script. 46 00:02:26,430 --> 00:02:29,220 And if you haven't done so already, create your script. 47 00:02:29,220 --> 00:02:35,040 So right click create C-sharp script and then call it print to console and then just click on it to 48 00:02:35,040 --> 00:02:40,470 double check that the class name print console matches the file name print to console. 49 00:02:40,470 --> 00:02:41,040 Excellent. 50 00:02:41,490 --> 00:02:43,650 Now I'm going to double click on that. 51 00:02:43,650 --> 00:02:48,990 And what that should do is open up Visual Studio code or whichever idea you said you're using. 52 00:02:49,020 --> 00:02:52,710 Let me just rearrange this to get a little bit nicely presented on the screen. 53 00:02:53,160 --> 00:02:53,490 Okay. 54 00:02:53,490 --> 00:02:57,990 You can make your font larger or smaller control minus or control plus. 55 00:02:57,990 --> 00:03:00,600 So I think that's the right size for us together here. 56 00:03:00,600 --> 00:03:04,500 And you can see we've got a whole bunch of stuff over on the left and a bunch of stuff in the middle. 57 00:03:04,500 --> 00:03:07,230 You'll understand a lot of this stuff as time goes on. 58 00:03:07,230 --> 00:03:09,750 For now, I just want to draw your attention to a couple of things. 59 00:03:09,750 --> 00:03:15,540 The first thing for us to use Visual Studio code effectively, we need to add a couple of extensions. 60 00:03:15,540 --> 00:03:21,150 So if you click on this bottom icon on the left hand toolbar here, you can see we've got extensions 61 00:03:21,150 --> 00:03:22,170 we can search for. 62 00:03:22,170 --> 00:03:25,890 I'll give myself a little bit more space by moving this middle line over. 63 00:03:25,890 --> 00:03:29,190 I've already installed the two extensions that we need. 64 00:03:29,190 --> 00:03:33,000 So if you're a bit of a power user, find those, install those and you're good to go. 65 00:03:33,030 --> 00:03:35,640 The way you find them is up in our search box here. 66 00:03:35,640 --> 00:03:39,090 I'm going to search for C sharp and that should show me all my options. 67 00:03:39,090 --> 00:03:40,680 Look for the one that's by Microsoft. 68 00:03:40,680 --> 00:03:41,490 Click on that. 69 00:03:41,490 --> 00:03:43,590 Then over on here you'll see an install button. 70 00:03:43,590 --> 00:03:44,370 I've already installed it. 71 00:03:44,370 --> 00:03:45,810 So mine says uninstall. 72 00:03:45,840 --> 00:03:46,860 You should say install. 73 00:03:46,860 --> 00:03:52,380 So install that it should be a very quick, quick process and then also search for unity. 74 00:03:52,380 --> 00:03:57,690 And that should show us the unity code snippets, this one here by Kleber Silva. 75 00:03:57,690 --> 00:04:00,060 And that once again is a click install. 76 00:04:00,060 --> 00:04:01,710 So I'm going to remove what I've got in my search. 77 00:04:01,710 --> 00:04:04,350 And you can see I've got my two extensions installed here. 78 00:04:04,350 --> 00:04:05,490 Why do we need extensions? 79 00:04:05,490 --> 00:04:11,130 Well, these are the things that give us the cleverness, the autocomplete and the hints and all those 80 00:04:11,130 --> 00:04:14,130 kind of things about what we're doing within our code. 81 00:04:14,130 --> 00:04:15,480 So where is our code gone? 82 00:04:15,480 --> 00:04:19,079 Well, you can see we've got a couple of tabs up here, just like in a browser. 83 00:04:19,079 --> 00:04:23,400 I don't need to have this last tab, so I'm going to find my print to console CSS. 84 00:04:23,430 --> 00:04:25,020 There's a lot more information in here. 85 00:04:25,020 --> 00:04:28,500 There's a lot more heavy lifting or heavy power that we can look at in the future. 86 00:04:28,500 --> 00:04:34,710 For example, if I click on the Explore tab, you can see that print to console is within my project 87 00:04:34,710 --> 00:04:35,220 structure. 88 00:04:35,220 --> 00:04:38,160 I've got my assets directory which matches my assets directory. 89 00:04:38,160 --> 00:04:41,490 You can see underneath here obviously about unity hanging around that you can see. 90 00:04:41,490 --> 00:04:44,790 But we won't worry about looking at all this at the moment because we're just going to be dealing in 91 00:04:44,790 --> 00:04:46,050 pretty simple structures. 92 00:04:46,050 --> 00:04:49,620 So I'm going to click on this one more time, the Explorer, and that will close it up. 93 00:04:49,620 --> 00:04:52,680 So now we can just be paying attention to our code in here. 94 00:04:52,680 --> 00:04:52,950 Okay. 95 00:04:52,950 --> 00:04:56,910 So when we create a new script in Unity, there's some content that's automatically put in there. 96 00:04:56,910 --> 00:04:58,830 For now, we don't need to dig into all of that. 97 00:04:58,830 --> 00:05:01,260 I just want to draw your attention to one important area. 98 00:05:01,260 --> 00:05:02,280 And this is start. 99 00:05:02,280 --> 00:05:02,630 This is. 100 00:05:02,760 --> 00:05:09,060 A function or a method that when we push the play button, let me just pop back to Unity. 101 00:05:09,060 --> 00:05:10,650 This play button just here. 102 00:05:10,650 --> 00:05:16,290 It will say play and do all the things we need to do in our game shows, what's going on through the 103 00:05:16,290 --> 00:05:18,360 main camera into the game window. 104 00:05:18,360 --> 00:05:20,490 And you can see I haven't told it to do anything yet. 105 00:05:20,490 --> 00:05:24,270 I've just kind of got an image and stuff and I've actually got a little bit of an error down here because 106 00:05:24,270 --> 00:05:27,930 I didn't do my layers correctly on my water. 107 00:05:27,930 --> 00:05:29,100 Let me just quickly do that. 108 00:05:29,100 --> 00:05:30,120 We'll put that at five. 109 00:05:30,120 --> 00:05:30,450 Okay. 110 00:05:30,450 --> 00:05:31,170 There we go. 111 00:05:31,170 --> 00:05:33,120 So we talked about layers in the last lecture. 112 00:05:33,120 --> 00:05:35,010 So it was underneath my ground. 113 00:05:35,010 --> 00:05:35,490 But there it is. 114 00:05:35,490 --> 00:05:36,420 We can see it now. 115 00:05:36,420 --> 00:05:41,550 So not much is happening when I click the play button, but when I click the play button, start will 116 00:05:41,550 --> 00:05:42,420 be cold. 117 00:05:42,420 --> 00:05:43,860 So in other words, what will happen? 118 00:05:43,860 --> 00:05:48,930 What we will do is make sure that Unity and Visual Studio Code are talking to each other properly. 119 00:05:48,930 --> 00:05:51,480 So within start, just follow along with me here. 120 00:05:51,480 --> 00:05:52,380 Trust me on this. 121 00:05:52,380 --> 00:05:59,010 We're going to type debug with a capital D dot log log open my parentheses. 122 00:05:59,010 --> 00:06:03,780 So these are the round brackets above the nine and zero on your keyboard. 123 00:06:03,780 --> 00:06:07,410 And then we're going to use quotation marks just to the left of the enter key. 124 00:06:07,410 --> 00:06:11,550 And we can type in here whatever we want to print to the console. 125 00:06:11,550 --> 00:06:13,260 So I'll show you the console in just a moment. 126 00:06:13,260 --> 00:06:14,250 We'll print in here. 127 00:06:14,250 --> 00:06:19,110 I'm printing to the console a very inspired message. 128 00:06:19,110 --> 00:06:23,460 And then down at the end of our statement, this is a statement here we're creating. 129 00:06:23,460 --> 00:06:24,780 We need a semicolon. 130 00:06:24,780 --> 00:06:29,640 Semicolon in C sharp is kind of like putting a full stop or a period when you're writing a sentence. 131 00:06:29,640 --> 00:06:33,210 So we need our semicolon down the end to say, I'm done with this particular thing. 132 00:06:33,210 --> 00:06:37,290 Now you can see there's a round dot up here on our tab print console. 133 00:06:37,290 --> 00:06:43,290 If we do control SX to save now we get our cross mark so it shows we've now saved it. 134 00:06:43,290 --> 00:06:47,220 We have to save it before this takes effect back over into unity. 135 00:06:47,220 --> 00:06:49,860 So I've got my script and I've created my very first statement before. 136 00:06:49,860 --> 00:06:50,850 This will do anything. 137 00:06:50,850 --> 00:06:52,650 I need to put it into my game. 138 00:06:52,650 --> 00:06:56,070 I need to attach it to a game object so that it happens. 139 00:06:56,070 --> 00:06:59,610 Just sitting it down here in the assets directory, this is on the hard drive. 140 00:06:59,610 --> 00:07:01,170 It's like, cool, I'm ready to go. 141 00:07:01,170 --> 00:07:04,920 But for it to get in the game, literally get in the game, we need to put it somewhere. 142 00:07:04,920 --> 00:07:07,740 So I'm going to click on Where's my dude's head? 143 00:07:07,740 --> 00:07:08,460 There it is. 144 00:07:08,490 --> 00:07:09,150 Got circled. 145 00:07:09,150 --> 00:07:12,630 I'm just going to rename this to head just so I remember in the future. 146 00:07:12,630 --> 00:07:14,400 So I just clicked over in the inspector. 147 00:07:14,400 --> 00:07:18,780 Sorry, I did that quickly clicked in the inspector and just changed the name from circle to head. 148 00:07:18,780 --> 00:07:21,840 You don't need to do that, but for me it's just so I remember where it is. 149 00:07:21,840 --> 00:07:28,200 And now I'm going to grab my script and drag it into this big open area underneath the add component 150 00:07:28,200 --> 00:07:28,530 button. 151 00:07:28,530 --> 00:07:35,580 Let go and you can see print to console has now been added as a component to the head game object. 152 00:07:35,580 --> 00:07:38,490 That means that it will run because it's in our scene. 153 00:07:38,490 --> 00:07:39,450 And what is the console? 154 00:07:39,450 --> 00:07:44,580 Well, the console is this tab over here, which allows us to print out information just for us, just 155 00:07:44,580 --> 00:07:45,990 for game developers to look at. 156 00:07:45,990 --> 00:07:50,340 The player will never see this, but it's a great place to show information about what's going on in 157 00:07:50,340 --> 00:07:50,940 our game. 158 00:07:50,940 --> 00:07:55,770 If we now click on the play button, you can see in our console it's going to print. 159 00:07:55,770 --> 00:07:57,540 I'm printing to the console. 160 00:07:57,540 --> 00:07:57,930 Excellent. 161 00:07:57,930 --> 00:08:00,780 We've written some code, but that's a bit dull. 162 00:08:00,780 --> 00:08:01,470 We can do better. 163 00:08:01,470 --> 00:08:04,440 So I'm going to give this to you as a challenge to make sure it's all making sense. 164 00:08:04,440 --> 00:08:09,090 Change the content of your print statement, of our print statement to something that a player might 165 00:08:09,090 --> 00:08:11,520 be saying in your pretend platformer, for example. 166 00:08:11,520 --> 00:08:16,410 For me, I'm going to change it to eight too many donuts to imply that he's not quite able to reach 167 00:08:16,410 --> 00:08:17,010 that rope. 168 00:08:17,010 --> 00:08:18,510 So there's your challenge. 169 00:08:18,540 --> 00:08:21,720 Change the print statement to be something else and print it to the console. 170 00:08:21,720 --> 00:08:24,960 When you've done that, I'll see you back here for my solution. 171 00:08:27,320 --> 00:08:28,220 Okey dokey. 172 00:08:28,220 --> 00:08:31,250 I'm going to find my debug log. 173 00:08:31,250 --> 00:08:37,960 Just highlight all of this in here and say 8...2... many dot dot dot donuts. 174 00:08:37,970 --> 00:08:39,200 Exclamation point. 175 00:08:39,200 --> 00:08:39,890 Just for fun. 176 00:08:39,890 --> 00:08:40,789 Save that. 177 00:08:40,789 --> 00:08:42,440 Remember, you've got to save it for change. 178 00:08:42,440 --> 00:08:43,309 Click back on here. 179 00:08:43,309 --> 00:08:48,290 Sometimes unity is going to do a little bit of re compiling and thinking and updating stuff that's all 180 00:08:48,290 --> 00:08:49,340 pretty normal and natural. 181 00:08:49,340 --> 00:08:50,660 And look down in the console here. 182 00:08:50,660 --> 00:08:55,910 When I click on play, there's not much going on with our game, but our guy is saying eight too many 183 00:08:55,910 --> 00:09:02,060 donuts and that's the foundations of us writing code in Visual Studio code and then having unity, being 184 00:09:02,060 --> 00:09:05,960 able to use that code when it's applied to a game object. 185 00:09:05,960 --> 00:09:06,650 So there we go. 186 00:09:06,680 --> 00:09:09,110 Great work in this lecture and I'll see you in the next one.