the images above show fluid overlays for lava and water.

below is my current code for my own fluid:

Spoiler

package me.minioof.minimod.fluid;

import me.minioof.minimod.block.ModBlocks;
import me.minioof.minimod.fluid.custom.OrangeJuice;
import me.minioof.minimod.item.ModItems;
import me.minioof.minimod.minimod;
import net.minecraft.resources.ResourceLocation;
import net.minecraft.sounds.SoundEvents;
import net.minecraft.world.level.block.LiquidBlock;
import net.minecraft.world.level.block.state.BlockBehaviour;
import net.minecraft.world.level.material.FlowingFluid;
import net.minecraft.world.level.material.Fluid;
import net.minecraft.world.level.material.Material;
import net.minecraftforge.eventbus.api.IEventBus;
import net.minecraftforge.fluids.FluidAttributes;
import net.minecraftforge.fluids.ForgeFlowingFluid;
import net.minecraftforge.registries.DeferredRegister;
import net.minecraftforge.registries.ForgeRegistries;
import net.minecraftforge.registries.RegistryObject;

public class ModFluids {
    public static final ResourceLocation WATER_STILL_RL = new ResourceLocation("block/water_still");
    public static final ResourceLocation WATER_FLOWING_RL = new ResourceLocation("block/water_flow");
    public static final ResourceLocation WATER_OVERLAY_RL = new ResourceLocation("block/water_overlay");

    public static final DeferredRegister<Fluid> FLUIDS
            = DeferredRegister.create(ForgeRegistries.FLUIDS, minimod.MOD_ID);

    public static final RegistryObject<FlowingFluid> ORANGE_JUICE_FLUID
            = FLUIDS.register("orange_juice", () -> new OrangeJuice.Source(ModFluids.ORANGE_JUICE_PROPERTIES));

    public static final RegistryObject<FlowingFluid> ORANGE_JUICE_FLOWING
            = FLUIDS.register("orange_juice_flowing", () -> new OrangeJuice.Flowing(ModFluids.ORANGE_JUICE_PROPERTIES));


    public static final ForgeFlowingFluid.Properties ORANGE_JUICE_PROPERTIES = new ForgeFlowingFluid.Properties(
            () -> ORANGE_JUICE_FLUID.get(), () -> ORANGE_JUICE_FLOWING.get(), FluidAttributes.builder(WATER_STILL_RL, WATER_FLOWING_RL)
            .density(15).luminosity(2).viscosity(5).sound(SoundEvents.HONEY_DRINK).overlay(WATER_OVERLAY_RL)
            .color(0xbfffa12c)).slopeFindDistance(3).levelDecreasePerBlock(3)
            .block(() -> ModFluids.ORANGE_JUICE_BLOCK.get()).bucket(() -> ModItems.ORANGE_JUICE_BUCKET.get());

    public static final RegistryObject<LiquidBlock> ORANGE_JUICE_BLOCK = ModBlocks.BLOCKS.register("orange_juice",
            () -> new LiquidBlock(() -> ModFluids.ORANGE_JUICE_FLUID.get(), BlockBehaviour.Properties.of(Material.WATER)
                    .noCollission().strength(100f).noDrops()));


    public static void register(IEventBus eventBus) {
        FLUIDS.register(eventBus);
    }
}

 

How can i make my own fluid overlay? I would like it to recolor stuff, like water, and have high fog level like lava.

Thanks.

Forge added support for this in 1.19 (search for rendering) - https://github.com/MinecraftForge/MinecraftForge/issues/8608

I don't think there is anything for this in 1.18.2, but somebody might correct me?