MIT Explains: How To Make a Video Game - By MITK12Videos
Transcript
| 00:0-1 | it's me , carmelo . Video games are fun to | |
| 00:03 | play . But have you ever wanted to make one | |
| 00:05 | yourself ? How can I make a character run and | |
| 00:08 | jump on the screen just by pressing some keys just | |
| 00:11 | like websites or the apps on your phone . Video | |
| 00:14 | games are just computer programs . We make them by | |
| 00:18 | giving instructions to a computer or to a video game | |
| 00:21 | console and these instructions can be stored in your laptop | |
| 00:26 | hard drive or even in a city Rome . And | |
| 00:30 | there are things like make a character appear in the | |
| 00:33 | middle of the screen or when the player hits the | |
| 00:37 | up arrow key , make the character jump when we | |
| 00:41 | want to give instructions to another person . We use | |
| 00:44 | a human language like english or italian . But unfortunately | |
| 00:48 | we cannot speak to a computer the same way because | |
| 00:50 | for now computers can only understand simple instructions and they're | |
| 00:54 | very picky about the way we were things in order | |
| 00:56 | to give instructions to the computer . We need the | |
| 00:59 | programming language just like human languages . Programming languages can | |
| 01:03 | be very different from each other , many reliant text | |
| 01:06 | so programmers can write words that give instructions to a | |
| 01:10 | computer . Let's say I want to create a very | |
| 01:13 | simple video game where a character moves around the screen | |
| 01:17 | . One of the first things I need to tell | |
| 01:19 | the computer is that when I hit a certain key | |
| 01:21 | , the cat goes up . If I want to | |
| 01:24 | use the python programming language , I could read the | |
| 01:26 | instructions like this . This language looks foreign , but | |
| 01:29 | actually it's not that complicated . For example , here | |
| 01:33 | is where I say that whenever the computer detects any | |
| 01:36 | key , press if the key is the up arrow | |
| 01:39 | key , it needs to move the player , our | |
| 01:41 | cat zero pixels horizontally and five pixels up to understand | |
| 01:46 | the directions . I just gave it in tighten . | |
| 01:48 | The computer translates them into many more simpler instructions . | |
| 01:52 | Eventually , these instructions get translated into machine language alphabet | |
| 01:56 | is made of zeros and ones the processor , which | |
| 01:59 | is the computer brain can understand and execute machine language | |
| 02:03 | sending back the right graphics to the screen . Even | |
| 02:07 | a simple instruction like move up five pixels gets translated | |
| 02:11 | into hundreds or thousands of simpler instructions in machine language | |
| 02:15 | before the computer can understand and respond . And all | |
| 02:18 | this happens in fractions of a second . Other programming | |
| 02:21 | languages like scratch , which is developed here at the | |
| 02:24 | MIT Media Lab are visual programming languages . Instead of | |
| 02:28 | using words in scratch , you can drag and drop | |
| 02:32 | blocks together in order to make something happen on the | |
| 02:36 | screen . For example , if I want to move | |
| 02:39 | a cat around , I would do something like this | |
| 02:43 | . So if I wanted my kids to go up | |
| 02:45 | five pixels and scratch , I would snap together two | |
| 02:48 | blocks like this . And I can do the same | |
| 02:51 | with the left down and right arrow keys . Also | |
| 02:55 | I can play with distractions and I can say that | |
| 02:58 | when I click on the cat , I can change | |
| 03:01 | its color . And also I can make him a | |
| 03:07 | game like space invaders look simple . But it's not | |
| 03:10 | . It includes player movement , like what we program | |
| 03:13 | before , but also characters moving by themselves . Music | |
| 03:17 | and sounds , shooting collisions , keeping score . And | |
| 03:22 | that's where programming gets interesting . Making something move up | |
| 03:25 | . five pixels may not sound very exciting , but | |
| 03:28 | basic instructions like this one are the building blocks you | |
| 03:31 | can use to create your own video games . What | |
| 03:34 | kinds of instructions would you use to create something like | |
| 03:37 | a memory game ? Tetris , Angry Birds , Minecraft | |
| 03:41 | , a professional video game might have millions of instructions | |
| 03:45 | written by lots of people . All working together to | |
| 03:48 | bring the game to life . Human languages have grammar | |
| 03:52 | and basic words . You can combine together to create | |
| 03:55 | things like stories , novels , poems . In the | |
| 03:59 | same way programming languages have grammar and basic instructions you | |
| 04:04 | can combine together to create not only video games but | |
| 04:08 | also animations , simulations and interactive stories . And visual | |
| 04:12 | programming . Languages like scratch , make it easier for | |
| 04:15 | anyone to learn how to program . So instead of | |
| 04:18 | just playing video games now you can make them So | |
| 04:23 | go make one mm . |
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