1 00:00:03,860 --> 00:00:09,200 In this lecture, we're going to start creating the questions for our quiz using script table objects. 2 00:00:09,770 --> 00:00:14,150 Before we go ahead and start doing that, though, there's a little bit of tidy up that we need to do 3 00:00:14,150 --> 00:00:19,640 in our project because our hierarchy is starting to get a little bit messy and so is our asset folder. 4 00:00:19,880 --> 00:00:23,030 So in our asset folder, let's clean this up first. 5 00:00:23,030 --> 00:00:28,460 And the first thing I want to do is just store away our font assets in the text message folder. 6 00:00:28,670 --> 00:00:35,210 So let's open that up and we're going to drag the font file into the fonts folder and we're going to 7 00:00:35,210 --> 00:00:40,660 drag the font asset into resources, fonts and materials. 8 00:00:41,600 --> 00:00:46,490 We've also got this button prefab, but this button doesn't really tell us what it does. 9 00:00:46,490 --> 00:00:52,310 So let's give that a more descriptive name by just pressing F two and we'll call this the answer button 10 00:00:52,310 --> 00:00:53,030 instead. 11 00:00:54,780 --> 00:00:56,910 I will also create a new folder for that. 12 00:00:56,910 --> 00:01:03,660 So right click create folder and we'll call this prefabs and drag that over into there. 13 00:01:03,930 --> 00:01:06,060 That tidies up our asset folder. 14 00:01:06,210 --> 00:01:09,210 So over in our hierarchy, let's do some work in here. 15 00:01:09,210 --> 00:01:14,190 And I'm not going to worry too much about the pre visualization canvas or the background canvas, but 16 00:01:14,190 --> 00:01:17,700 the children of our quiz canvas could certainly do with some better naming. 17 00:01:17,700 --> 00:01:22,380 So I'm going to rename my text object to the question text. 18 00:01:22,380 --> 00:01:27,600 And under our answer button group, I'm just going to rename our buttons to answer button. 19 00:01:28,710 --> 00:01:32,190 And I'm also going to give it an index that starts at zero. 20 00:01:32,400 --> 00:01:36,990 And since these are all prefabs, I can just go ahead and delete these and then duplicate again. 21 00:01:36,990 --> 00:01:40,140 So we have answer button zero through to answer button three. 22 00:01:40,500 --> 00:01:41,770 With all that set up. 23 00:01:41,790 --> 00:01:46,620 Finally, let's just add a couple of new blank folders to our assets ready for the stuff that we're 24 00:01:46,620 --> 00:01:47,550 about to do. 25 00:01:47,580 --> 00:01:52,800 So the first thing I'm going to do is create a new folder called Script, which will hold all of our 26 00:01:52,800 --> 00:01:54,060 C sharp scripts. 27 00:01:54,480 --> 00:01:56,580 And I'm also going to create a folder. 28 00:01:57,530 --> 00:02:01,070 Called questions which will hold all of our script objects. 29 00:02:01,370 --> 00:02:03,190 Okay, so project all set up. 30 00:02:03,200 --> 00:02:08,479 Let's actually talk about what script will objects are and how they're going to help us with our game. 31 00:02:09,190 --> 00:02:11,710 So what is a script or object? 32 00:02:11,740 --> 00:02:16,770 Well, it's really just a data container, so a way of storing data for our gang. 33 00:02:16,780 --> 00:02:20,800 And they're useful because they keep this data out of our script. 34 00:02:20,800 --> 00:02:25,750 And this helps us to save memory by storing all of that data in a single place that our scripts can 35 00:02:25,750 --> 00:02:26,500 reference. 36 00:02:26,530 --> 00:02:31,870 They also don't need to be attached to game objects like normal mono behavior scripts, and this makes 37 00:02:31,870 --> 00:02:34,360 them very lightweight and convenient to use. 38 00:02:34,600 --> 00:02:40,090 And probably the best way to think of scripts for objects is as a kind of template, so we can use them 39 00:02:40,090 --> 00:02:41,410 as a kind of blueprint. 40 00:02:41,410 --> 00:02:43,690 And this helps with data consistency. 41 00:02:44,020 --> 00:02:49,810 Some examples of where script objects can be useful is for things like storing weapon statistics in 42 00:02:49,810 --> 00:02:54,460 an RPG, so things like the damage and critical charts and things like that. 43 00:02:54,700 --> 00:02:59,950 We could also use them to store card data in a collectible card game, and for our game we're going 44 00:02:59,950 --> 00:03:02,500 to be using them to store question data. 45 00:03:02,500 --> 00:03:08,950 So things like the question, text itself, all of the possible answers to that question and also a 46 00:03:08,950 --> 00:03:10,840 reference to the correct answer. 47 00:03:11,520 --> 00:03:16,860 Now I mentioned that the script objects kind of separate to the mono behavior scripts that you're familiar 48 00:03:16,860 --> 00:03:17,320 with. 49 00:03:17,340 --> 00:03:23,280 So on the one side, we have our code, which might be a mono behavior called quizzes. 50 00:03:23,580 --> 00:03:28,290 And in the script, we might have various methods for displaying the question on screen and checking 51 00:03:28,290 --> 00:03:29,160 the answer. 52 00:03:29,190 --> 00:03:33,150 And we could store all of the question data in this script as well. 53 00:03:33,360 --> 00:03:39,960 However, if we rip this data out of our script and store them in script objects, we could then reference 54 00:03:39,960 --> 00:03:44,420 one of those script will objects when we need to get the question data that we're after. 55 00:03:44,430 --> 00:03:49,620 And this will then just look at the data in the script object without actually copying it anywhere. 56 00:03:50,570 --> 00:03:52,810 Now jumping back over into unity. 57 00:03:52,820 --> 00:03:57,230 Let's actually create some script objects in our scripts folder. 58 00:03:57,260 --> 00:04:03,770 Let's right click and go up to create new C-sharp script and we're going to call this the question. 59 00:04:03,830 --> 00:04:07,730 So for script object, let's go ahead and open this up. 60 00:04:08,580 --> 00:04:14,160 And the first thing I want to do in here is to actually delete the start and update method, because 61 00:04:14,160 --> 00:04:18,540 not only are we not going to need it, we're not actually going to be able to use them with scripts 62 00:04:18,550 --> 00:04:19,470 or objects. 63 00:04:19,470 --> 00:04:24,900 Because if we look at the class declaration at the top here, we can see that it inherits from mono 64 00:04:24,900 --> 00:04:25,800 behavior. 65 00:04:25,800 --> 00:04:30,030 And this will be the case for every script that you've written so far in this course. 66 00:04:30,060 --> 00:04:36,690 However, for script objects, we actually want to change this from mono behavior to script object. 67 00:04:37,430 --> 00:04:43,310 The next thing I want to do to make this script will object usable is to head above this class declaration 68 00:04:43,310 --> 00:04:45,080 and add an attribute. 69 00:04:45,080 --> 00:04:51,260 So let's open up some brackets and we're going to use the Create Asset menu attribute. 70 00:04:51,470 --> 00:04:53,440 Now to explain what this does. 71 00:04:53,450 --> 00:04:55,130 Let's jump back over into unity. 72 00:04:55,130 --> 00:05:00,320 And unfortunately, we will be jumping back and forth between Unity and script quite a bit in this lecture. 73 00:05:00,710 --> 00:05:05,600 But if we wait for this script to compile and then anywhere in the project window, let's go ahead and 74 00:05:05,600 --> 00:05:06,620 right click. 75 00:05:06,830 --> 00:05:12,530 And if we go up to create, we can see we now have a question so at the top of this list. 76 00:05:12,530 --> 00:05:15,050 So that's what that Create Asset menu is doing for us. 77 00:05:15,050 --> 00:05:18,260 It's adding an option to create something in this list. 78 00:05:18,590 --> 00:05:24,170 And if we go ahead and click on this, we'll also notice it brings in a new script or object called 79 00:05:24,170 --> 00:05:25,250 New Question. 80 00:05:25,340 --> 00:05:26,750 So, but. 81 00:05:26,750 --> 00:05:29,540 Question so isn't the most descriptive of names. 82 00:05:29,540 --> 00:05:34,640 So to make this whole thing more usable, let's go ahead and just delete that test script table object 83 00:05:34,640 --> 00:05:41,240 I've just made head back over into our script and within this create asset menu within the parentheses, 84 00:05:41,270 --> 00:05:43,820 let's go ahead and add a menu name. 85 00:05:44,960 --> 00:05:51,950 And I'm going to change this to just be a quiz question and then to change the name of the file that 86 00:05:51,950 --> 00:05:53,150 gets created. 87 00:05:53,180 --> 00:05:58,250 Let's go ahead and use file name and call this a new question. 88 00:05:58,970 --> 00:06:02,510 If we go ahead and save that now and jump back into unity once again. 89 00:06:03,790 --> 00:06:08,950 Now if we right click and go up to our create menu, we now have a quiz question. 90 00:06:09,310 --> 00:06:15,700 If we go ahead and click on our quiz question, we get a script or object called New Question now because 91 00:06:15,700 --> 00:06:17,620 our script doesn't really contain anything. 92 00:06:17,620 --> 00:06:20,860 Our script to object currently does absolutely nothing. 93 00:06:20,860 --> 00:06:23,950 So let's fix that next and start adding some question. 94 00:06:23,950 --> 00:06:25,990 Text to our script to object. 95 00:06:26,920 --> 00:06:29,980 Back in all script within the class itself. 96 00:06:30,220 --> 00:06:37,390 Let's go ahead and add a new variable and this variable is going to be a string and we'll call this 97 00:06:37,390 --> 00:06:44,110 the question then to initialize this question string with some default text, I'm just going to say 98 00:06:44,110 --> 00:06:46,480 enter new question text here. 99 00:06:47,650 --> 00:06:49,480 Cut that off with our semicolon. 100 00:06:50,290 --> 00:06:54,130 Next, we need to think about the access level for this variable. 101 00:06:54,250 --> 00:06:58,150 Now we are going to need to be able to set this in the inspector. 102 00:06:58,150 --> 00:07:04,660 So your first thought might be to make it public, but we don't want this to be changed outside of our 103 00:07:04,660 --> 00:07:10,030 script to object, because if another class comes along and tries to edit our question, it's not going 104 00:07:10,030 --> 00:07:12,250 to be working on a copy of our question. 105 00:07:12,250 --> 00:07:15,040 It's actually going to be working on the question itself. 106 00:07:15,040 --> 00:07:20,380 So the text contained within our script to object will be changed on disk. 107 00:07:20,830 --> 00:07:24,760 So instead, let's make this a serialized field. 108 00:07:25,240 --> 00:07:31,330 This will give us the ability to set our question in the inspector, but not access this variable from 109 00:07:31,330 --> 00:07:32,530 another class. 110 00:07:32,530 --> 00:07:38,200 And we will actually need to be able to at least get the value of this variable from another class, 111 00:07:38,200 --> 00:07:41,560 but we'll worry about that in probably the next lecture. 112 00:07:41,590 --> 00:07:47,110 So with our serialized field in place, let's jump back to Unity to see the fruits of our labor. 113 00:07:47,320 --> 00:07:53,320 We can now see that we've got a new question string on our script to object with our default text already 114 00:07:53,320 --> 00:07:53,950 added. 115 00:07:54,310 --> 00:07:59,860 Now this is all perfectly fine and usable, but we'll find that as our text gets longer. 116 00:07:59,860 --> 00:08:04,870 So if I just add some additional characters here, we'll notice that it just sort of overflows off the 117 00:08:04,870 --> 00:08:05,320 edge. 118 00:08:05,320 --> 00:08:09,910 And so if your question is a little bit longer than just a handful of characters, it's going to be 119 00:08:09,910 --> 00:08:14,290 far more difficult to edit this later on and check it for typos and things like that. 120 00:08:14,470 --> 00:08:19,450 So to go ahead and fix this, let's once again jump back over into our script. 121 00:08:19,450 --> 00:08:23,140 And what we're going to do is add another attribute to our variable. 122 00:08:23,140 --> 00:08:29,320 So just above this, we're going to open some more brackets and I'm going to use the attribute text 123 00:08:29,320 --> 00:08:30,040 area. 124 00:08:30,040 --> 00:08:36,549 Now, what the text area attribute allows us to do is adjust and control the size of that text box in 125 00:08:36,549 --> 00:08:37,480 the inspector. 126 00:08:37,780 --> 00:08:39,460 This requires two parameters. 127 00:08:39,460 --> 00:08:43,870 It requires a minimum and a maximum number of lines that we want to display. 128 00:08:44,049 --> 00:08:51,220 So for our question, I think two would be a nice minimum size and maybe let's go up to six as the maximum 129 00:08:51,220 --> 00:08:56,110 size, because if our question gets any longer than that, it certainly isn't going to fit on the canvas 130 00:08:56,110 --> 00:08:56,860 itself. 131 00:08:56,860 --> 00:09:01,060 So for the last time, let's save our script and jump back into unity. 132 00:09:01,970 --> 00:09:05,030 And now we can see that our question box has now got bigger. 133 00:09:05,420 --> 00:09:11,410 And if we add some more lines, we can see we get a maximum of six lines visible to us at any one time. 134 00:09:11,420 --> 00:09:15,170 And if we shorten this down, we get a minimum of two. 135 00:09:15,740 --> 00:09:18,980 And I think that nicely brings us on to your challenge. 136 00:09:20,150 --> 00:09:26,660 If you haven't done so already, then decide on the topic for your quiz and then think of around five 137 00:09:26,660 --> 00:09:29,180 questions that you want to ask your players. 138 00:09:29,630 --> 00:09:35,000 Once you've got some questions down on paper, then go ahead and create the script objects that will 139 00:09:35,000 --> 00:09:39,830 hold these questions and our script object will only hold the questions at the moment. 140 00:09:39,830 --> 00:09:44,810 So for now, don't worry too much about the answers just yet because we'll get on to those in the next 141 00:09:44,810 --> 00:09:45,380 lecture. 142 00:09:45,410 --> 00:09:48,170 So pause the video now and give that a go. 143 00:09:53,380 --> 00:09:53,800 Okay. 144 00:09:53,800 --> 00:09:54,560 Welcome back. 145 00:09:54,580 --> 00:10:00,040 So hopefully you've now made a final decision on the topic for your quiz and you've created some scriptural 146 00:10:00,070 --> 00:10:02,350 objects to hold your questions here. 147 00:10:02,350 --> 00:10:07,180 I've already created four while you've been away in the questions folder, in my assets folder. 148 00:10:07,330 --> 00:10:13,300 And for the final one, all we need to do is right click, go up to create and then quiz question, 149 00:10:13,600 --> 00:10:14,620 give it a new name. 150 00:10:14,620 --> 00:10:19,660 So let's call this question five and then finally let's add some question text. 151 00:10:19,660 --> 00:10:23,410 So my game is all about helping people learn C-sharp and Unity. 152 00:10:23,410 --> 00:10:27,010 So I'm going to ask the question, what is a variable? 153 00:10:28,510 --> 00:10:32,980 However, since we don't have space to add our answers yet, we're going to leave things there. 154 00:10:32,980 --> 00:10:36,100 And in the next lecture we're going to look at adding this functionality. 155 00:10:36,100 --> 00:10:37,540 So I'll see you there.