Fluid Physics

This mod blends together vanilla fluid mechanics with something a little more realistic plus some small additions. Fluids flowing horizontally will not be affected by this mod. Fluids flowing down will take the source with them. This is intentionally not a realistic fluid simulation in order to not break too much of the vanilla gameplay. If you want something more realistic look in the "Similar mods" section down below.

There is also a Fabric version

Features

Fluid source blocks can flow down
Removes infinite water sources (Can still be created by placing Spring blocks next to fluid sources)
Pistons can pump fluids
Spring blocks generate under naturally generated springs and prevent them from flowing down
Rain refills lakes and oceans (similar to infinite water sources in vanilla)
Works with vanilla clients (you have to set the config option spring/block to a vanilla block like 'mossy_cobblestone')

Requirements

Minecraft Forge
Scalable Cat's Force
MixinBootstrap (only required on 1.15.2)

Screenshots

Videos

Known issues

Under some circumstances fluids can stop flowing (This is why in the video I have the glass block slowing down the water flowing into the sandstone tank)
There were issues reported when using this mod on 1.16.5 together with ForgeEndertech and Optifine or GraalVM. Please upgrade to Optifine G8 or use another JVM.

Similar mods

If you are looking for a similar mod for fabric with more realism have a look at Dihydrogen Monoxide Reloaded by CoolMineman

Also there is the similarly realistic forge mod PhysEx

License

This project uses the Apache 2.0 License. See the file called LICENSE.