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1×fixed 60 Hz

RIVER DYNAMICS

Water material

Responsive water for channels, dams, and little experiments.

Material behavior

Viscosity12% · watery Low spreads and turns freely. High resists motion and holds a thicker, fudgier front. Water flow speed1.00× Material-only response speed. World time scale remains a separate playback control. Base transfer10.90 u/s Units offered to neighbors per second at one unit of driving head, before material and force modifiers. Pressure response1.00× How strongly a deeper cell pushes into a shallower neighbor. Slope pull1.84× How strongly the authored river-bed drop pulls water downhill, independently of pressure. Directional carry28% Retains prior motion so established streams prefer to keep moving the same way. Lateral settling1.28× How eagerly uneven free surfaces relax sideways after the directional pass. Surface tension0.0040 u Minimum head difference before water yields; higher values suppress tiny seepage. Outflow safety cap51% Maximum share a cell can give away across all neighbors in one substep.

Base 10.90 × force × speed × mobility

River IN & solver

IN maximum rate30.0 u/s The source may emit less when its outlet reaches target depth. IN target depth1.12 u The source fills toward this local depth instead of creating infinite pressure. Solver substeps3 / tick Accuracy and stability at a fixed 60 Hz lab clock; higher values cost CPU.

Water rendering

Luminous edge100% Topology-aware shoreline catchlight: depth, drop, flow, light direction, and view scale all contribute. Edge width0.058 stud Foam response100% Flow highlights100% Body opacity100%

Velocity erosion

Enable erosion Durability belongs to the material. Only authored bedrock is indestructible. Erosion strength0.10× Scales how quickly hydraulic shear damages the current top plate. Starts at speed3.00 c/s Still or gently settling water cannot chew through the landscape. Speed sensitivity1.50 Higher values make fast chutes and impacts dominate over broad slow water. Minimum wet depth0.060 u Bank impact65% How strongly velocity aimed into a neighboring bank attacks its exposed face. Outer-bend shear45% Uses water-velocity curvature to attack the outside bank of a turning river. Counterflow neck shear18% Opposing currents on both sides of a thin bank accelerate a natural cutoff. Thin-neck reach2 cells Maximum bank thickness across which two reaches can combine their shear.

Discrete plate contractFirst wear splits one whole brick into 3 plates. Damage stays on the top plate; only failure lowers terrain by exactly ⅓ brick.SOIL soft · CLAY medium · STONE / PAVER resistant · BEDROCK indestructible

Settings

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