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Water collision and region data

Water-related collision surfaces have HitMtrlParam classes separate from the materials drawing water. Sekiro’s community names distinguish water puddles, walkable water, diveable water and swimming slopes; Elden Ring’s names include water and several poison or rot surfaces. Sourced · Paramdex

Game Class Community name Confidence
Sekiro 20 Water Puddle Sourced · Sekiro · Paramdex
Sekiro 21 Water (Walkable) Sourced · Sekiro · Paramdex
Sekiro 22 Water (Diveable) Sourced · Sekiro · Paramdex
Sekiro 35 Water Slope Sourced · Sekiro · Paramdex
Sekiro 36 Water Slope (swimming) Sourced · Sekiro · Paramdex
Elden Ring 21 Water Sourced · Elden Ring · Paramdex
Elden Ring 23 / 24 Shallow Poison Swamp / Poison Swamp Sourced · Elden Ring · Paramdex
Elden Ring 46 / 49 Scarlet Swamp / Lake of Rot Sourced · Elden Ring · Paramdex

The fsnp shape-key mapping supplies these IDs per collision triangle where the binding is unambiguous. Observed

How do water regions, collision and the rendered surface join?

A class name does not establish water height, volume extent, flow, shader selection, damage application or the runtime swimming predicate. Collision and region records alone do not yet establish the complete water system.