Langton's ant! Initial settings (c.widt… by Kalanchoe

function u(t) {

c.width=1920 // clear the canvas
for(i=0;i<9;i++)
x.fillRect(400+i*100+S(t)*300,400,50,200) // draw 50x200 rects

} // 122/140

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    u(t) is called 60 times per second.
    t: Elapsed time in seconds.
    S: Shorthand for Math.sin.
    C: Shorthand for Math.cos.
    T: Shorthand for Math.tan.
    R: Function that generates rgba-strings, usage ex.: R(255, 255, 255, 0.5)
    c: A 1920x1080 canvas.
    x: A 2D context for that canvas.

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Kalanchoe

function u(t) {

g=(j)=>(1-(D&2))*(j^D&1);t?(i=x.getImageData(X+=g(0),Y+=g(1),1,1),D+=(i.data[3]^=255)?1:3,x.putImageData(i,X,Y)):(c.width=198,X=99,Y=56,D=0)

Feb 24 2017 4:41 AM UTC

}// 140/140

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Langton's ant! Initial settings (c.width=198,X=99,Y=56,D=0) can be changed. D%4 = direction where 0,1,2,3 correspond to down,right,up,left.

u/Kalanchoe

Faster version: speed=40;g=(j)=>(1-(D&2))*(j^D&1);while(speed-->0)t?(i=x.getImageData(X+=g(0),Y+=g(1),1,1),D+=(i.data[3]^=255)?1:3,x.putImageData(i,X,Y)):(c.width=198,X=99,Y=56,D=0)
u/donbright

brilliant!


      u(t) is called 60 times per second.
      t: elapsed time in seconds.
      c: A 1920x1080 canvas.
      x: A 2D context for that canvas.
      S: Math.sin
      C: Math.cos
      T: Math.tan
      R: Generates rgba-strings, ex.: R(255, 255, 255, 0.5)

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