Created
January 14, 2012 17:32
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Chain Reaction in under 1k
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| m=Math;R=m.random;P=m.pow;D=c.width=c.height=600;t=12;T=D-t;O=256;l=e=E=N=0;setInterval(function(){if(!E&&(e>=N||L&&e<N&&l--))e=L=0,A=[],A.length=5*++l,N=l*(l+1)/2;a.fillStyle=e<N?"#778":"#eef";a.fillRect(0,0,D,D);a.strokeText(e+"/"+N,9,9);for(i=A.length;i--;)with(A[i]||(A[i]={s:L,d:L,M:40*R()+20,x:L?L.clientX:R()*T+6,y:L?L.clientY:R()*T+6,v:R()*t-6,z:R()*t-6,C:"rgb("+[R()*O|0,R()*O|0,R()*O|0].join()+")",r:6,t:30/l|0}))!d&&A.some(function(b){return b.d&&P(r+b.r,2)>P(x-b.x,2)+P(y-b.y,2)&&(s=d=1,E++,e++)}),s?t?2==s?t--:++r>M&&(s=2):--r||(A.splice(i,1),E--):(x+=v,y+=z,x<r|x+r>D&&(v=-v),y<r|y+r>D&&(z=-z)),a.beginPath(),a.fillStyle=C,a.arc(x,y,r,0,7),a.fill()},50);c.onclick=function(b){L||(L=b,E++,A.push(0))}; |
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| m = Math, R = m.random, P = m.pow, D = c.width = c.height = 600, t = 12, T = D - t, O = 256, l = e = E = N = 0; | |
| setInterval(function () { | |
| if (!E && (e >= N || (L && e < N && l--))) { | |
| e = L = 0; | |
| A = []; | |
| A.length = ++l * 5; | |
| N = l * (l + 1) / 2; | |
| } | |
| a.fillStyle = e < N ? '#778' : '#eef'; | |
| a.fillRect(0, 0, D, D); | |
| a.strokeText(e + '/' + N, 9, 9); | |
| i = A.length; | |
| while (i--) { | |
| with (A[i] || (A[i] = { | |
| s : L, | |
| d : L, | |
| M : R() * 40 + 20, | |
| x : L ? L.clientX : R() * T + 6, | |
| y : L ? L.clientY : R() * T + 6, | |
| v : R() * t - 6, | |
| z : R() * t - 6, | |
| C : 'rgb(' + [R() * O | 0, R() * O | 0, R() * O | 0].join() + ')', | |
| r : 6, | |
| t : 30 / l | 0 | |
| })) { | |
| !d && A.some(function(o) { | |
| return o.d && P(r + o.r, 2) > P(x - o.x, 2) + P(y - o.y, 2) && (s = d = 1, E++, e++); | |
| }); | |
| if (!s) { | |
| x += v; | |
| y += z; | |
| if (x < r | x + r > D) { | |
| v = -v; | |
| } | |
| if (y < r | y + r > D) { | |
| z = -z; | |
| } | |
| } else if (!t) { | |
| if (!--r) { | |
| A.splice(i, 1); | |
| E--; | |
| } | |
| } else if (s == 2) { | |
| t--; | |
| } else { | |
| if (++r > M) { | |
| s = 2; | |
| } | |
| } | |
| a.beginPath(); | |
| a.fillStyle = C; | |
| a.arc(x, y, r, 0, 7); | |
| a.fill(); | |
| }}; | |
| }, 50); | |
| c.onclick = function(e) { | |
| if (!L) { | |
| L = e; | |
| E++; | |
| A.push(0); | |
| } | |
| }; | |
| //goal: 666 bytes when minified. | |
| //secondary goal: primary file of 1k or less. |
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| <!DOCTYPE html> | |
| <html> | |
| <body> | |
| <canvas id='c'></canvas> | |
| <script> | |
| //taken from http://js1k.com/2011-dysentery/shim.html | |
| var b = document.body; | |
| var c = document.getElementsByTagName('canvas')[0]; | |
| var a = c.getContext('2d'); | |
| document.body.clientWidth; // fix bug in webkit: http://qfox.nl/weblog/218 | |
| </script> | |
| <script src='game.js'></script> | |
| </body> | |
| </html> |
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