Is swimming
Whether a player is swimming, flat in the water the way a sprint in water makes them.
A Minecraft element (a check) in Players. Needs the Basic plan or higher to go live; building and testing are free.
Example
When a player moves to another block → If Is swimming → Give a potion effect: minecraft:dolphins_grace.
Also called
swimming, in water swim, crawl swim
Works as a data pack?
Partly. A data pack does most of it, and the editor tells you the difference.
What you give it
- Player