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2048 in 491 bytes of JavaScript and HTML.
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| <body onload="function M(c,d){for(i=H=16;i--;G|=p>>11)for(p=B[m=V(j=i%4+1)];--j?(q=B[n=V(j)])?p-q?0:h=c?0:B[p?S+=B[m]*=2:B[i++,m]=q,n]=d:L=localStorage:0;)R=Math.random}function V(x){if(x)return(D>1?4-x:x-1)<<D%2*2|i-i%4>>D%2*2;for(i=H|R()*H;B[--i%H];);B[i%H]=2<<R()+.1}(onkeyup=function(e){D=e?e.which-37:B=[];D>>2||M()|V(e?h:V());for(D=h=4;D--;)M(1);for(h=(G|h?S+' / '+(L.S>S?L.S:L.S=S):S)+'<table border>';H;P.innerHTML=h+='<th width=50 height=50>'+[B[H]])H--%4?0:h+='<tr>'})(S=G=0)"id=P> |
@veu, I've removed D>>2|G|| part and the code seems to be working correctly: http://jsbin.com/vigohuso/1/
@subzey That works if you don't care that any pressed key moves tiles and the game continues after reaching 2048. Btw, I found a way to use your output loop optimization and it's now 496 bytes.
Oh… Right, sorry.
Btw, original game doesn't end with 2048 tile, you may pick "continue playing" and try to get 4096 or 8192
In that case removing |G might actually be closer to the original as it would update the highscore when you've reached the 2048 tile but would let you keep playing.
Use oninput instead of onkeyup. It’s not shorter but it feels much faster.
Let's golf this: http://243game.com/ :)
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@subzey I tried that before and it doesn't work.
Mdoesn't get called after the game's over leading to an infinite loop over the now always negativeH.