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.
not golfed c.width*=1;if(t%8<.2){q=[];for(i=9;i--;)q.push([400+i*100,400,1])} for(i of q)x.fillRect(i[0],(i[1]<880?i[2]+=Math.random():i[2]*=-.9,i[1]+=i[2]),50,200);
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)