1 00:00:00,180 --> 00:00:05,160 Hey guys, welcome to Day 22 of 100 Days of Code. Today 2 00:00:05,160 --> 00:00:07,170 we're going to be building the famous pong game, 3 00:00:07,770 --> 00:00:11,610 and you're going to be doing this by using all of the skills that you've learned 4 00:00:11,700 --> 00:00:12,533 up till now. 5 00:00:13,440 --> 00:00:16,800 Pong is a classic arcade game, 6 00:00:17,310 --> 00:00:20,040 probably one of the first arcade games that ever was. 7 00:00:20,670 --> 00:00:25,050 And it has a really simple premise. It's basically just a ball 8 00:00:25,050 --> 00:00:29,760 that's going across a table and two players each control a paddle 9 00:00:29,970 --> 00:00:33,240 bouncing the ball back and forth. If you miss the ball, 10 00:00:33,300 --> 00:00:35,010 then the other player scores a point. 11 00:00:36,000 --> 00:00:39,180 Now the history of pong is itself kind of fascinating. 12 00:00:39,570 --> 00:00:43,350 It was created and written by this guy, Allan Alcorn. 13 00:00:43,860 --> 00:00:47,760 And he was a fresh recruit to the Atari company. 14 00:00:48,450 --> 00:00:50,520 And in order to test his skills, 15 00:00:50,550 --> 00:00:53,580 they decided to get him to create a game, from scratch. 16 00:00:54,180 --> 00:00:56,700 And this game happened to be pong, 17 00:00:57,090 --> 00:01:02,090 which became a huge success selling loads and loads of machines across bars and 18 00:01:02,160 --> 00:01:03,060 pubs in the world. 19 00:01:03,600 --> 00:01:08,600 It eventually became so successful that a lot of these bar owners were calling 20 00:01:08,700 --> 00:01:13,110 up Atari saying, Hey, your machines are braking after only a few days. 21 00:01:13,560 --> 00:01:17,790 And the reason when they investigated was because the machines were chock-a- 22 00:01:17,790 --> 00:01:19,740 block full of money. 23 00:01:20,010 --> 00:01:24,690 People were putting their quarters in to play pong and the machine was getting 24 00:01:24,720 --> 00:01:26,100 full too quickly. 25 00:01:26,430 --> 00:01:30,870 So this is the legendary game that we're going to be building today. As a ways, 26 00:01:30,930 --> 00:01:33,390 the first step is to break down the problem. 27 00:01:33,840 --> 00:01:35,640 And I want you to have a go at this, 28 00:01:35,670 --> 00:01:40,140 think about how you would take this pong game that you've seen here, 29 00:01:40,590 --> 00:01:45,480 and which components would we need to write code for, which components might fit 30 00:01:45,480 --> 00:01:47,430 well in its own separate class, 31 00:01:47,760 --> 00:01:52,740 and how might we break down the logic of this game so that we can solve it piece 32 00:01:52,740 --> 00:01:56,910 by piece. Now, I want you to take a piece of paper, 33 00:01:57,000 --> 00:02:02,000 take a look at the game screen right here and make a note of which components 34 00:02:02,310 --> 00:02:06,990 you think could be separated into their own classes. Briefly, 35 00:02:06,990 --> 00:02:11,280 pause the video and jot down some notes on how you might structure the code for 36 00:02:11,280 --> 00:02:12,113 this game. 37 00:02:15,080 --> 00:02:18,860 Now I've broken this tutorial down into eight pieces. 38 00:02:19,340 --> 00:02:22,910 Keep a piece of paper to hand throughout today so that you can compare your 39 00:02:22,910 --> 00:02:24,770 structure to the sample solution. 40 00:02:25,520 --> 00:02:28,430 Pong is a much more complex game than snake. 41 00:02:28,580 --> 00:02:33,050 So pausing to think about the structure of the code now will help you a lot more 42 00:02:33,260 --> 00:02:37,310 in the upcoming lessons and it'll make it easier for you to see how everything 43 00:02:37,310 --> 00:02:41,900 fits together. First, we're going to figure out how to create the screen, 44 00:02:42,230 --> 00:02:46,400 how to create and move a puddle, and then create another puddle 45 00:02:46,400 --> 00:02:50,840 so we can have a two-player game and then create the ball and make it move 46 00:02:50,900 --> 00:02:55,520 constantly across the screen and figure out when it collides with a wall and 47 00:02:55,520 --> 00:03:00,160 make it bounce back and then detect when there's a collision with the paddle to 48 00:03:00,160 --> 00:03:04,510 know when to bounce it back. Finally, we'll figure out when a user scores, 49 00:03:04,780 --> 00:03:09,370 when the paddle misses the ball, and we'll keep the score using a scoreboard 50 00:03:09,400 --> 00:03:13,150 like before. Now, if you're feeling really confident, 51 00:03:13,510 --> 00:03:16,240 you can, in fact, just create a blank project, 52 00:03:16,510 --> 00:03:21,040 go through these steps one by one and see if you can code up this game by 53 00:03:21,040 --> 00:03:23,860 yourself. But what I recommend though 54 00:03:23,890 --> 00:03:28,810 is to go along with the videos and I'm going to explain each of the problems one 55 00:03:28,810 --> 00:03:32,560 by one, and you can have a go at building it alongside with me. 56 00:03:33,070 --> 00:03:35,050 So if you decide to follow along with me, 57 00:03:35,200 --> 00:03:37,630 head over to the next lesson and we'll get started. 58 00:03:38,050 --> 00:03:40,120 If you decide to create everything from scratch, 59 00:03:40,360 --> 00:03:43,510 then pause the video and start creating the game now.