Flowing Water

Makes the connected surface flow like water — the ripples scroll in one direction and the surface swells gently. Pair it with the Water material preset. A shader effect: it composes with other shader effects on the same object.

Since 1.64.

Output: effect (wire into an Object Selector, or leave it in an object's own flow)

Parameters

Parameter	Default	Range
speed	0.1	tiles per second (negative flows backwards)
direction	0	the flow's heading in degrees
swell	0.03	metres the surface rises and falls
swellSize	2	metres per swell
ripples	on	borrow a ripple texture when the material has no normal map of its own

A save writes the surface's own material; the borrowed ripples are only for the running scene.

Practical example

A stream: a long flat box with the Water preset, Flowing Water speed 0.3, direction along the stream.