WEBVTT 00:01.040 --> 00:07.310 In this lecture we're going to build on what we've learned in the last lecture and really start to design 00:07.310 --> 00:08.660 our game. 00:08.740 --> 00:14.600 I can write any code in this lecture but we will solve the entire problem. 00:15.410 --> 00:22.430 So we know that the players should be prompted to play again once the game is over. 00:22.430 --> 00:30.310 So how would we in just a few kind of lines really solve this problem. 00:30.350 --> 00:38.310 So how I would go about it is say I'm going to write some pseudo code here. 00:39.300 --> 00:51.320 So I say do you know play the game. 00:51.550 --> 00:52.920 And then while 00:56.390 --> 01:00.390 we want us to play again. 01:00.520 --> 01:00.940 Right. 01:03.530 --> 01:10.030 It's a very simple kind of way to solve the problem. 01:10.230 --> 01:18.690 And you may think I'm being a bit cheeky here by just kind of really solving a very high level but you're 01:18.690 --> 01:23.310 going to see in a second why I'm why I'm doing this. 01:23.310 --> 01:30.920 So we've kind of Virdi solve the entire problem but we've really glossed over the real meat of it. 01:30.960 --> 01:37.010 So let's actually break down how we played the game. 01:37.170 --> 01:37.680 Skinner right. 01:37.680 --> 01:39.280 Play the game here. 01:43.300 --> 01:52.690 So we know from the description that we have to set the secret number at the start. 01:52.780 --> 02:04.300 So maybe the very first thing to do one set secret number. 02:04.730 --> 02:14.900 And since we don't know how to kind of choose it or change it every time we're just going to set it 02:14.900 --> 02:19.120 to a known value. 02:19.140 --> 02:19.710 For now 02:27.880 --> 02:35.050 because at least then we'll be able to play the game and make any changes we need to make in order to 02:35.230 --> 02:35.970 play the game. 02:36.000 --> 02:48.060 For so the next step is to watch when we have to actually set the number of guesses. 02:49.630 --> 02:50.120 Right. 02:50.270 --> 02:56.880 And thanks to our understanding of the problem the last lecture we know exactly what to set it to. 02:56.910 --> 03:03.930 So the the log is going to be two of the upper. 03:04.370 --> 03:05.830 Well we know the range. 03:05.840 --> 03:08.600 So is this going to be 100. 03:09.080 --> 03:16.310 And it's probably going to be like this maybe maybe the ceiling of it or something. 03:16.310 --> 03:21.670 If you remember that function in math and go to the next highest integer. 03:21.960 --> 03:22.750 OK. 03:23.000 --> 03:28.940 So that will be that. 03:29.110 --> 03:34.290 And the next thing is to get the yes from where. 03:34.570 --> 03:34.990 Right. 03:35.200 --> 03:37.270 So I start guessing. 03:37.270 --> 03:42.610 So get the yes from the player. 03:43.080 --> 04:01.950 Well really what we need to do is prompt these for really prompt three four prompts the user to make 04:02.130 --> 04:03.160 a guess. 04:03.180 --> 04:11.700 And remember we should output the number of guesses left. 04:12.000 --> 04:12.260 K. 04:15.980 --> 04:33.270 so the next thing is once we get it we should Shak see if the guess is equal to the secret number or. 04:36.870 --> 04:37.620 K. 04:38.110 --> 04:52.750 And this might have a few cases so this is the case where if the guess is not equal to the secret number 04:55.360 --> 05:00.510 and then kind of 5 a 1 05:03.430 --> 05:11.420 it we should decrement each number of guesses left 05:16.470 --> 05:21.720 and then the next thing we should do is 05:24.150 --> 05:36.340 check to see if the class was higher or lower. 05:38.750 --> 05:39.580 And 05:42.730 --> 05:49.060 the secret number 8. 05:49.200 --> 05:51.930 So if it was 05:55.200 --> 06:00.840 OK so safe skewing it silly but 06:04.040 --> 06:08.750 her it's five today OK. 06:08.910 --> 06:19.870 So if it was higher and we print at the guess is too high right. 06:20.960 --> 06:29.650 Otherwise a to b if the guess is lower 06:33.050 --> 06:33.890 than 06:38.640 --> 06:47.030 right that I guess was two. 06:47.130 --> 06:55.620 And if it was exact then it's actually doesn't that doesn't matter too much. 06:56.100 --> 07:00.480 You'll see why in a second so we have to do this multiple times right because what if they didn't guess 07:00.480 --> 07:00.980 the numbers. 07:00.980 --> 07:08.480 So this actually has to be all in the big. 07:08.610 --> 07:10.950 So again use to do while loops. 07:10.960 --> 07:14.600 Notice her using the do while here. 07:15.010 --> 07:17.500 Because we want to do this at least once right. 07:17.710 --> 07:24.880 We want to at least get get to see her number and then make the player guess at least once. 07:25.000 --> 07:25.430 OK. 07:26.610 --> 07:31.350 So while wow wow. 07:31.680 --> 07:32.970 While the game is over 07:36.880 --> 07:37.330 OK. 07:37.400 --> 07:48.430 So and as I'm using English and and sort of a little bit of code so you sort of do our pseudo code here. 07:48.820 --> 07:51.540 So this is really what I call solving the problem. 07:51.590 --> 07:55.880 So let's go through this one more time and see if this really solves the problem. 07:55.880 --> 08:01.350 So we do play the game wow. 08:01.360 --> 08:02.750 We want to play again. 08:02.760 --> 08:03.100 Right. 08:03.130 --> 08:06.290 So we just keep doing this while we keep wanting to play. 08:06.750 --> 08:07.230 OK. 08:07.360 --> 08:18.130 So playing the game then is we have to again loop because it might take multiple tries for the user 08:18.130 --> 08:21.570 to actually get the secret number. 08:21.640 --> 08:27.990 So we set the secret number although this should be not inside. 08:28.140 --> 08:28.700 Right. 08:30.710 --> 08:35.190 So in fact these first steps should not be inside it. 08:39.980 --> 08:45.840 So these steps should be this. 08:46.070 --> 08:47.630 We only want to loop 08:50.740 --> 08:53.360 wow they haven't gotten Yes. 08:56.270 --> 08:57.300 So this 09:02.700 --> 09:11.840 so what we do is we prompt the user to make a guess get guess from the player check to see if that guess 09:11.840 --> 09:13.510 is equal to the secret number. 09:13.640 --> 09:20.870 If it's not equal then more decrement How many guesses we have left and then check to see if it's higher 09:20.870 --> 09:22.700 or lower than the secret number. 09:22.700 --> 09:25.880 And then if it's higher will print that the guess is too high. 09:26.150 --> 09:30.620 And if it's lower the print that the guess is too low. 09:30.620 --> 09:33.250 And while the game is not over. 09:33.300 --> 09:33.840 OK. 09:33.890 --> 09:42.700 And then if the game is over we should then display results of the game. 09:42.710 --> 09:43.100 Right. 09:43.100 --> 09:44.930 So say if he 09:47.510 --> 09:53.100 tell the player if he got it or not. 09:53.190 --> 09:53.630 Right. 09:57.750 --> 10:00.210 So hopefully that makes sense. 10:00.210 --> 10:08.750 So see how it kind of went through a few iterations before before we've even like actually coded anything. 10:08.780 --> 10:15.400 We're solving the problem or make all our mistakes right here so we don't have to have so many mistakes 10:15.580 --> 10:18.230 later when we actually implement the code. 10:18.230 --> 10:25.400 And so I made that mistake of having these two inside that do while loop in me and take it out because 10:25.420 --> 10:27.760 that didn't make any sense. 10:27.920 --> 10:35.970 K so now what do we do. 10:35.990 --> 10:36.370 Right. 10:36.370 --> 10:38.880 Does this solve the entire problem. 10:38.920 --> 10:41.300 I would kind of think so right. 10:41.320 --> 10:51.070 It seems like it does but there are a few things that kind of seem a little bit too big. 10:51.060 --> 10:51.840 Great. 10:51.950 --> 10:54.910 So for example like this. 10:54.920 --> 10:57.150 Play the game thing here right. 10:57.940 --> 11:06.740 And any anything that seems kind of too big we should actually think about making that function. 11:06.740 --> 11:11.390 So play the game. 11:11.590 --> 11:14.680 So to say functions 11:18.160 --> 11:23.390 so play the game will become you know play a game. 11:23.410 --> 11:24.000 Right. 11:25.010 --> 11:31.290 So it's become a play game function so any anything that's really big will make into a function. 11:31.280 --> 11:40.730 So play game is one maybe want to play again should be another one to play again or she's got some thing 11:41.900 --> 11:44.280 to play again. 11:46.460 --> 11:48.950 They will be a function. 11:49.430 --> 11:50.480 You know how to do this. 11:50.480 --> 11:52.700 The secret number is just terrible. 11:52.730 --> 11:53.650 Same with this. 11:53.650 --> 11:55.780 It's going to be almost literally this. 11:55.790 --> 12:01.900 In fact he prompt the user to make a guess and then I'll put them up. 12:01.950 --> 12:08.370 Guesses left and they get the guess from the player could be one function. 12:08.580 --> 12:16.760 So you say get the guess from the player because we've actually made that function before remember we 12:16.760 --> 12:22.030 had the we actually got an integer as a function. 12:22.050 --> 12:24.880 So so sad to say. 12:24.920 --> 12:25.770 Yes. 12:27.600 --> 12:27.960 OK. 12:28.120 --> 12:28.960 That would be a function 12:31.810 --> 12:33.660 and is there any other ones. 12:33.680 --> 12:36.340 Well maybe the game is not over. 12:36.340 --> 12:44.440 So none of these after 5 onwards I think we know how to do that. 12:44.440 --> 12:47.700 These will just be kind of if statements. 12:47.990 --> 12:51.680 And we know how to compare numbers to numbers. 12:51.770 --> 12:57.250 We know how to output whether it's too high or too low and we have to compare. 12:57.320 --> 13:00.200 If you think so we know how do that. 13:00.200 --> 13:08.040 So really this is game is not over. 13:09.870 --> 13:12.770 Just make that into is game over. 13:15.750 --> 13:16.230 OK. 13:16.460 --> 13:20.260 So that be a function and maybe display results 13:23.880 --> 13:29.190 it functions well let's call it like that. 13:32.260 --> 13:32.880 OK. 13:33.400 --> 13:43.290 So we've already done the kind of solving of the play game that's really the core of the game itself 13:43.290 --> 13:44.380 right. 13:44.560 --> 13:50.150 But let's solve the rest of the functions before we even start coding them. 13:50.290 --> 13:55.380 So we again we've done we actually solve these two before. 13:57.020 --> 14:03.550 In one of our input examples is like looping with input and then that function that we did in the practice. 14:03.710 --> 14:10.630 So let's just skip these K because we don't really we don't need to go over that again we're just kind 14:10.630 --> 14:14.250 of do what we did before only maybe slightly modified. 14:14.770 --> 14:20.250 And we were so people trying to solve the is game over. 14:20.270 --> 14:24.770 So it is game over. 14:25.850 --> 14:27.000 When is it over. 14:27.020 --> 14:27.930 Really. 14:27.980 --> 14:36.650 So the game is over when the number of tries left is zero or if the player's gas was equal to the secret 14:36.650 --> 14:37.290 number right. 14:37.340 --> 14:49.480 So really it's just number of guesses left zero or where. 14:49.560 --> 14:50.520 Yes. 14:51.460 --> 14:56.000 Is equal to the seeker number ain't. 14:56.150 --> 15:01.520 That's really there's no nothing else really magical about it. 15:02.850 --> 15:06.450 And so let's move on to the players. 15:06.520 --> 15:09.900 This should be pretty simple to. 15:09.950 --> 15:17.840 So we want to tell the player that they got it if it did tell them they didn't get it if they didn't. 15:17.850 --> 15:18.100 Right. 15:18.140 --> 15:28.240 So even saying like if this pseudocode If player got it then 15:32.190 --> 15:37.100 you know that they got it. 15:37.250 --> 15:46.640 And also when the secret number again just in case that was it was one of our 15:50.380 --> 15:52.290 requirements here. 15:53.690 --> 16:00.340 So as the game ends by saying what the secret number was it rightless if the player gets the right number. 16:00.340 --> 16:00.990 OK. 16:01.250 --> 16:03.790 So when you say it otherwise 16:06.730 --> 16:07.630 we'll say 16:14.240 --> 16:18.420 French. 16:18.600 --> 16:19.750 They didn't get 16:22.500 --> 16:24.970 and also French secret name. 16:30.570 --> 16:33.540 So that's kind of it. 16:33.550 --> 16:37.870 I think we've really solve the problem here. 16:38.810 --> 16:48.240 So in the next lecture we'll actually implement this whole thing and we'll see how well we've really 16:48.300 --> 16:51.550 broken down the problem and understood the problem. 16:51.600 --> 16:55.530 So hopefully we can implement it quite quickly. 16:55.530 --> 16:57.270 So I'll see you in the next lecture.