tixy.land creative javascript graphic coding game

It’s available here. You can write your own code by adding it to the url like this: https://tixy.land/?code=%27HAVE+FUN%21%27. To help with your memory, I’ve copied out all the possibilities below:

The code returns the visibility for every dot. You can think of the values 0 and 1 representing true (visible) and false (invisible). The values between 0 and 1 represent more or less visible, or you can think of them as the radius of the circle (small radius = smaller circle = less visible). Negative numbers create red dots. Input is limited to 32 characters.

Params:

• Param t represents the time in seconds and allows you to animate.
• Param i is the index of the dot (0..255).
• Param x is the column index (from 1 to 16).
• Param y is the row index (from 1 to 16).

Examples:

• Math.random() < 0.1 (returns 1 or 0)
• Math.random() (returns a value between 0 and 1)
• Math.sin(t) (t is the time in seconds)
• i / 256 (i is the index of the dot - 0..255)
• x / 16 (x is the column index - 1..16)
• y / 16 (y is the row index - 1..16)
• y - 8.5 (negative numbers are red)
• y - t (use time to animate)
• y - t*4 (multiply time to increase speed)
• [1, 0, -1][i%3] (cycle colours / visibility from one dot to the next)
• Math.sin(y/8 + t)
• y - x (simple triangle)
• (y > x) && (16-x < y) (quarter triangle)
• i%4 - y%4 (pattern)
• x%4 && y%4 (grid)
• x>4 & y>4 & x<12 & y<12 (square)
• -(x>t & y>t & x<16-t & y<16-t) (animated square)
• (y-6) * (x-6) (mondrian squares) (see image below)
• (y-4*t|0) * (x-8-t|0) (moving cross)
• 4 * t & i & x & y (sierpinski)
• (t*10) & (1<<x) && y==8 (binary clock)
• Math.random() * 2 - 1 (random noise)
• Math.sin(i ** 2) (smooth noise)
• Math.sin(x/2)-Math.sin(x-t)-y+6 (waves)
• Math.sin(t-Math.sqrt(x*x+y*y)) (ripples by @thespite)
• (x-8)*(y-8) - Math.sin(t) * 64 (bloop bloop bloop by @v21)
• y == x || -(17-x == y) (diagonals)
• (x-y) - Math.sin(t) * 16 (wipe)
• Math.sin(t*5) * Math.tan(t*7) (disco)
• (x-5)**2+(y-5)**2-99*Math.sin(t) (moving circle)

My experiments:

• Math.cos(2*t*((i%2)%25(x*y)))
• Math.sin(10*t*((i%2F256)%25(x*y)))
• [1,%200,%20-1][i%3]-Math.sin(2*t)
• ((Math.sin(x+y)))*Math.sin(t)
• (x*Math.cos(10*t)>0)?-1:0 (flashing light v1)
• (x*Math.cos(10*t)>0)?-1:1 (flashing light v2)
• (x*y*Math.cos(5*t)>8)?-1:1 (encroaching circle)
• (x*y*Math.cos(5*t)>30)?-1:1
• (x*y*Math.cos(5*t)%3E8)?-1:1