Disable water physics

[SixthEel]

Is there a way to disable water movement for the player? Like have the same movement on land as underwater, thus completely ingoring the water. I have tried a bunch of stuff, and somehow got the exact oposite, but not what i want. Is something like this even possible? Thanks in advance for any answers.

[ChiefArug]

Funnily enough with how borked Mojang's fluid system, this is possible! (Although only globally and non-dynamically, unless you start using mixins.)
All you need to do is remove the water fluids from the water fluid tag, as fluid physics depends on which tag the fluid has (and this is likely how you managed to make air swimmable, adding the empty (minecraft:empty) fluid to the water tag makes it possible to swim in air).

NeoForge adds the ability to remove entries from tags with a remove field, so to remove water from the water tag it would look like this (with a file at data/minecraft/tags/fluid/water.json (for 1.20.1 and below it is fluids though)):

{
  "values": [],
  "remove": [ "minecraft:water", "minecraft:flowing_water" ]
}

[SixthEel]

Thanks for the idea, but this approach lacks the features you mentioned and I need, turning it off dynamically based on certain conditions, and per player. I'm fine with using mixing and that's what I've been using so far since as you said I need to. If you have any other ideas I'm open since I tried all mine and none worked.

[ChiefArug]

Ah, then you will need to look into where water physics are applied and mixin there to pretend they aren't in water.

I'm not sure where that is, I would start at the FluidTags class and find usages of the WATER field. If you need help with the mixins themselves then we have a dedicated channel on the discord or you can ask here again (make sure to provide the target code and the change you are trying to make to it, in addition to your current attempt).