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Binary Tetris - 140byt.es

Binary Tetris - 140byt.es

A simplified variant of the classic tetris game done in less than 140 bytes of JavaScript.

NEW: A standalone version in 300 bytes: aem1k.com/tetris

Source

```    function(a,b,c,d){d+=c;
return[d<0|a&b<<d?a=
parseInt((a|b<<c)
.toString(d=32,b=new Date&2|1)
.replace('v',''),d):
a|b<<d,a,b,d]}```

Feel free to edit the source and follow me on Twitter (@aemkei).

Example Layout

``````1.       2.       3.       4.       5.

.....    .....    .....    .....    .....
.....    .....    .....    .....    .....
...##    .....    .....    .....    .....
.....    ...##    .....    .....    .....
##...    ##...    ##.##    ##...    .....
###..    ###..    ###..    #####    ##...
``````

The main logic to move blocks, detect collision, assign new blocks, remove full lines and render the layout are included. Excluded are keyboard controls and the final rendering.

This version is heavy based on binary numbers and bit shift operators. I had to limit the board size to 5x6 (30 bits), because JavaScript converts numbers to 32-bit integers when using bitwise operators. The two left bits are later uses to add the correct padding when dealing with numbers that start with "0".

Basic Concept

The Board

``````                  00000         .....
798               11000   =>    ##...
11110         ####.
``````

The Block

``````3                 00011  =>     ...##
``````

Checking for Collision

``````                  00000         .....
798&3 = 2         00000  =>     .....
00010         ...X.
``````

Moving the Block at X Axis

``````3 << 1 = 6        00110   =>    ..##.
``````

Moving the Block at Y Axis

``````                  00011         ...##
3<<10 = 3072      00000   =>    .....
00000         .....
``````

Combining Block and Board

``````                  00011         ...##
798|3072 = 3870   11000   =>    ##...
11110         ####.
``````

Find full line (using base 32)

``````                  00011         3
3999              11100   =>    s
11111         v
``````

See the 140byt.es site for a showcase of entries (built itself using 140-byte entries!), and follow @140bytes on Twitter.

To learn about byte-saving hacks for your own code, or to contribute what you've learned, head to the wiki.

140byt.es is brought to you by Jed Schmidt, with help from Alex Kloss. It was inspired by work from Thomas Fuchs and Dustin Diaz.

 function ( a, // current board b, // current block c, // current position d, // new block offset for position e // placeholder: the layout to return ){ return d += c, // add offset to position e = a | b << d, // render layout based on board and moved block d < 0 | a & b< 1) 3 // double "##" (3 => 111) ), [ // the final return a, // new board b, // new block d, // new position e // final layout to render ] }
 function(a,b,c,d,e){return d+=c,e=a|b<
 DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE Version 2, December 2004 Copyright (C) 2011 YOUR_NAME_HERE Everyone is permitted to copy and distribute verbatim or modified copies of this license document, and changing it is allowed as long as the name is changed. DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION 0. You just DO WHAT THE FUCK YOU WANT TO.
 { "name": "tetris", "description": "A binary variant of the classic Tetris game.", "keywords": [ "tetris", "game", "binary" ] }


tsaniel commented Jan 27, 2012

 Binary Tetris! Once again @aemkei makes amazing stuff! (Sorry that I'm being tired, maybe I'll dig into it tomorrow).

tsaniel commented Jan 27, 2012

 Save 1 byte. `function(a,b,c,d,e){d+=c,e=a|b<

aemkei commented Jan 27, 2012

 Nice reordering! I know about some bugs in the display, when the block moves to far to the left or right. It generates some flickering in the output. Maybe we can save some bytes to get the missing handlers into the 140 bytes! Or did you found some errors in the logic?

tsaniel commented Jan 27, 2012

 No, temporarily just found the bug that you just mentioned.

maettig commented Jan 27, 2012

 I'm looking at the code and ... just wow! Edit: Save 1 byte? `function(a,b,c,d,e){return d+=c,e=a|b<

tsaniel commented Jan 27, 2012

 @maettig: It seems you forget the d in `[a,b,d,e]`.

aemkei commented Jan 27, 2012

 Right, we need to reset d to 32 when a collision was detected. But the reordered version and `new Date&2|1` will save 3 bytes: `function(a,b,c,d,e){d+=c,e=a|b<

Evghenusi commented Jan 28, 2012

 I have not delved into the logic, for which I apologize in advance. `parseInt` can not be replaced by `+`?

xpansive commented Jan 28, 2012

 @Evghenusi It could normally, but it's being parsed in base 32. `""+x` only works for base 10 numbers.

 thanks

tsaniel commented Jan 28, 2012

 Updated: Save 7 bytes by using `?:` instead of `&&()` and reusing variable `c`: `function(a,b,c,d){d+=c;c=d<0|a&b<

tsaniel commented Jan 28, 2012

 Save 11 bytes by reordering variables: `function(a,b,c,d){d+=c;return[d<0|a&b<

aemkei commented Jan 28, 2012

 Nice! So it's down to 128 (2^7) bytes. (Edit: 124 now!) I didn't see the last comment.

tsaniel commented Jan 28, 2012

 So it's 1<<7-1<<2 bytes.

aemkei commented Jan 28, 2012

 How about using the 16 left bytes to fix the wrapping issue when moving to far left / right? Or move the initial board/block state into the core function?

tsaniel commented Jan 29, 2012

 I would like to see both of them even if exceed 140 bytes. (we can shave the bytes off then)

plaes commented Feb 15, 2012

 Just a little inspiration: http://bytex64.net/code/datasnake/

aemkei commented Feb 15, 2012

 @plaes: Have you seen https://gist.github.com/1449250 the 140byt.es version of Snake?

plaes commented Feb 15, 2012

 @aemkei I was hinting that it would be cool to see a data-uri version of this snippet..

tsaniel commented Feb 15, 2012

 @plaes: What about make it an 140bytes entry? (just the logic part fitted in 140 bytes, as "Tweetris")

ghost commented Feb 15, 2012

 Excellent work!

nathanpc commented Feb 15, 2012

 Awesome code mate. Congratulations!

kendhia commented Feb 18, 2012

 Awsome code. you made javascript more beautifull with this game ! Congrats!

interval1066 commented Feb 19, 2012

 Your licensing scheme is too restrictive.

syntacticsugar commented Feb 19, 2012

 Oh Wow wow wow wow wow!!!!! I am shocked, amazed, and laughing my head off! And then I saw the licensing scheme! I am highly offended by the licensing scheme for it is entirely too restrictive! :D :D Why don't you loosen it up and allow me to rip it off and claim it as my own??? <3 <3 <3 <3 <3 love everything! thanks! inspires me to pursue JavaScript!

jazcap53 commented Feb 20, 2012

 Beautiful.

xmxkkk commented Feb 21, 2012

 very awesome

xiangjian commented Feb 21, 2012

 awesome

Gemberkoekje commented Feb 21, 2012

 I found you a bug if you keep holding the key to the left, it crashes, probably because the bits go off top. But other then that silly thing (The fact that I love breaking stuff) I have mad respect for doing it in 140 chars.

johnny-bui commented Feb 21, 2012

 amazing work.

Nushooz commented Feb 21, 2012

 Hey you left out the control and display code. This game is like 900 bytes working. You're a phony! Hey everybody, this guy is a great big phony!

plicaplica commented Feb 22, 2012

 From the license: "0. You just DO WHAT THE FUCK YOU WANT TO." I just wanna fuck.

iznax commented Feb 23, 2012

 I made a version with a larger play field and no edge wrap-around problems, but I can't quite get it down to 140 characters. http://jsbin.com/aparub/3

huipengyu commented Feb 26, 2012

 HAHA, so cute,

iznax commented Feb 27, 2012

 here's my full version of Tetris with rotating pieces, the core function is 255 characters. http://jsbin.com/ujewuk/2 function(p,r,t,g,z){var k,d=z[0];z=((r+z[1])&15)-r;for(k=4;k--;)if(g[p+d+t[r+z+k]]){if(d>1){for(k=4;k--;)g[p+t[r+k]]=1;for(k=0;k

WYH2O commented Aug 29, 2013

 wow .It's good.

viktor-evdokimov commented Nov 19, 2013

 Can you guys please send me examples of small games like this, I want to create collection of links. Thanks. 30lines.info

ewerybody commented Feb 28, 2017

 this 140bytes website... maybe you should remove the link ;]
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