Grain Garden

Splashery stretches a drumhead over this Splash's outline, twelve inches across, and finds the ways it can ring. Its lowest is 1596.0 Hz, 231 cents sharp of F6, the nearest tine on the comb. The next fifteen are its overtones, and each one draws its own figure: sand gathers on the lines that stay still.

Pick sand, water, oil, fire, seeds or stone, then hold and move to pour. Press 3D to tip the box.

Every grain here is one splat, moved by a simple rule sixty times a second. Sand falls and slides off a pile at a slant. Water and oil fall and spread sideways to find their level; oil is lighter, so water sinks under it. Fire flickers upward and dies down to smoke, lighting oil, plants and seeds, and water puts it out. A seed resting by water sprouts a plant that grows up toward the light and sometimes flowers. Stone stays where it is put, for ledges and bowls; Erase clears.

The box has depth. In 2D you see it face on and pour through its whole depth; the 3D button tips it round so the grains show in 3D, still running by the same rules (Q and E turn it).

Made in Splashery. Its code is MIT.

This link opens it in the Playground. To put it on your own page, add the element and one script tag. Every option.