Java tutorial
/* * Minecraft Forge * Copyright (c) 2016-2019. * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation version 2.1 * of the License. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ package net.minecraftforge.fluids; import net.minecraftforge.fluids.capability.IFluidHandler.FluidAction; import javax.annotation.Nonnull; import javax.annotation.Nullable; /** * This interface represents a Fluid Tank. IT IS NOT REQUIRED but is provided for convenience. * You are free to handle Fluids in any way that you wish - this is simply an easy default way. * DO NOT ASSUME that these objects are used internally in all cases. */ public interface IFluidTank { /** * @return FluidStack representing the fluid in the tank, null if the tank is empty. */ @Nonnull FluidStack getFluid(); /** * @return Current amount of fluid in the tank. */ int getFluidAmount(); /** * @return Capacity of this fluid tank. */ int getCapacity(); /** * @param stack Fluidstack holding the Fluid to be queried. * @return If the tank can hold the fluid (EVER, not at the time of query). */ boolean isFluidValid(FluidStack stack); /** * @param resource FluidStack attempting to fill the tank. * @param action If SIMULATE, the fill will only be simulated. * @return Amount of fluid that was accepted (or would be, if simulated) by the tank. */ int fill(FluidStack resource, FluidAction action); /** * @param maxDrain Maximum amount of fluid to be removed from the container. * @param action If SIMULATE, the drain will only be simulated. * @return Amount of fluid that was removed (or would be, if simulated) from the tank. */ @Nonnull FluidStack drain(int maxDrain, FluidAction action); /** * @param resource Maximum amount of fluid to be removed from the container. * @param action If SIMULATE, the drain will only be simulated. * @return FluidStack representing fluid that was removed (or would be, if simulated) from the tank. */ @Nonnull FluidStack drain(FluidStack resource, FluidAction action); }