Create the Fluid Representation

Before you can add the fluid, you need to create a Fluid Representation which will allow you to set the properties of the fluid you want to add.
This is where the VanillaFactory comes in:

mods.contenttweaker.VanillaFactory.createFluid(String unlocalizedName, int color);
mods.contenttweaker.VanillaFactory.createFluid(String unlocalizedName, CTColor color);

Import the representation Package

It might be required for you to import the package if you encounter any issues, so better be safe than sorry and add the import.
import mods.contenttweaker.Fluid;

ZenProperties

To get/set the properties you can either use the respecting ZenGetters/Setters or the ZenMethods:

//property name: density
//ZenGetter
print(fluid.density);
//ZenSetter
fluid.density = 500;
//ZenMethods
fluid.getDensity();
fluid.setDensity(1000);

Property Name	Type	Required	Default Value	Description/Notes
Property Name unlocalizedName	Type string	Required Yes	Default Value	Description/Notes Name, should be all lowercase
Property Name density	Type int	Required No	Default Value 1000	Description/Notes How fast you can walk in the fluid
Property Name gaseous	Type boolean	Required No	Default Value false	Description/Notes Is the fluid gaseous (flows upwards instead of downwards)?
Property Name luminosity	Type int	Required No	Default Value 0	Description/Notes The light-level emitted by the fluid
Property Name temperature	Type int	Required No	Default Value 300	Description/Notes The Fluid’s temperature
Property Name color	Type int	Required Yes	Default Value	Description/Notes The Fluid’s color-code
Property Name colorize	Type boolean	Required No	Default Value true	Description/Notes Is the fluid’s color-code applied?
Property Name rarity	Type string	Required No	Default Value COMMON	Description/Notes How rare a fluid is, determines ToolTip color (“COMMON”, “UNCOMMON”, “RARE”, “EPIC”)
Property Name viscosity	Type int	Required No	Default Value 1000	Description/Notes How quickly the fluid spreads
Property Name fillSound	Type ISoundEventDefinition	Required No	Default Value ITEM_BUCKET_FILL	Description/Notes The sound played when the fluid is picked up with a Bucket
Property Name emptySound	Type ISoundEventDefinition	Required No	Default Value ITEM_BUCKET_EMPTY	Description/Notes The sound played when the fluid is placed
Property Name vaporize	Type boolean	Required No	Default Value false	Description/Notes Does vaporize when placed in the Nether?
Property Name stillLocation	Type string	Required No	Default Value contenttweaker /fluid	Description/Notes The Location where to find the texture for the still fluid
Property Name flowingLocation	Type string	Required No	Default Value contenttweaker /fluid_flow	Description/Notes The Location where to find the texture for the flowing fluid
Property Name material	Type IMaterialDefinition	Required No	Default Value WATER	Description/Notes The Material the fluid is made of

Registering the fluid

You need to call this method to register the fluid in the game!
Otherwise nothing will happen!
After you have called this function, you cannot un-register the fluid or change any of it’s properties!

fluid.register();

Example Script

#loader contenttweaker
import mods.contenttweaker.VanillaFactory;
import mods.contenttweaker.Fluid;
import mods.contenttweaker.Color;

var zsFluid = VanillaFactory.createFluid("zs_fluid", Color.fromHex("FF69B4"));
zsFluid.fillSound = <soundevent:block.anvil.place>;
zsFluid.register();

You will need to add fluid.fluidName = Localized Name to the responding language files. Alternatively, you could use CraftTweaker’s localization feature, though it’s recommended using the language files!

Fluid

Create the Fluid Representation

Import the representation Package

ZenProperties

Registering the fluid

Example Script

Localizing the fluid