Waterfall

Waterfall

Waterfall — impassable animated waterfall. Unlike Water/Ocean this is not AQUATIC: flags are 0, so it blocks everyone, even aquatic agents and water-resistant players (a waterfall is too turbulent for anyone to cross).

Java: 5 symbols, cycles every 3 ticks, full period = 15 (same cadence as Fountain). Uses randomSeed so multiple waterfalls animate independently.