AIRobotGotoStationToLoadFluids.java

/**
 * Copyright (c) 2011-2015, SpaceToad and the BuildCraft Team
 * http://www.mod-buildcraft.com
 *
 * BuildCraft is distributed under the terms of the Minecraft Mod Public
 * License 1.0, or MMPL. Please check the contents of the license located in
 * http://www.mod-buildcraft.com/MMPL-1.0.txt
 */
package buildcraft.robotics.ai;

import net.minecraft.tileentity.TileEntity;
import net.minecraftforge.common.util.ForgeDirection;
import net.minecraftforge.fluids.FluidStack;
import net.minecraftforge.fluids.IFluidHandler;
import buildcraft.api.core.IZone;
import buildcraft.api.robots.AIRobot;
import buildcraft.api.robots.DockingStation;
import buildcraft.api.robots.EntityRobotBase;
import buildcraft.core.lib.inventory.filters.IFluidFilter;
import buildcraft.robotics.IStationFilter;
import buildcraft.robotics.statements.ActionRobotFilter;
import buildcraft.robotics.statements.ActionStationProvideFluids;

public class AIRobotGotoStationToLoadFluids extends AIRobot {

	private IZone zone;
	private IFluidFilter filter;

	public AIRobotGotoStationToLoadFluids(EntityRobotBase iRobot) {
		super(iRobot);
	}

	public AIRobotGotoStationToLoadFluids(EntityRobotBase iRobot, IFluidFilter iFiler) {
		this(iRobot);

		filter = iFiler;
	}

	@Override
	public void update() {
		startDelegateAI(new AIRobotSearchAndGotoStation(robot, new StationFilter(), robot.getZoneToLoadUnload()));
	}

	@Override
	public void delegateAIEnded(AIRobot ai) {
		if (ai instanceof AIRobotSearchAndGotoStation) {
			setSuccess(ai.success());
			terminate();
		}
	}

	private class StationFilter implements IStationFilter {

		@Override
		public boolean matches(DockingStation station) {
			if (!ActionRobotFilter.canInteractWithFluid(station, filter, ActionStationProvideFluids.class)) {
				return false;
			}

			for (ForgeDirection dir : ForgeDirection.VALID_DIRECTIONS) {
				TileEntity nearbyTile = robot.worldObj.getTileEntity(station.x() + dir.offsetX, station.y()
						+ dir.offsetY, station.z()
						+ dir.offsetZ);

				if (nearbyTile != null && nearbyTile instanceof IFluidHandler) {
					IFluidHandler handler = (IFluidHandler) nearbyTile;
					FluidStack drainable = handler.drain(station.side, 1, false);

					// TODO: there is no account taken for the filter on the
					// gate here. See LoadFluid, GotoStationToLoad and Load for
					// items as well.
					if (drainable != null
							&& filter.matches(drainable.getFluid())
							&& robot.canFill(ForgeDirection.UNKNOWN, drainable.getFluid())) {
						return true;
					}
				}
			}

			return false;
		}

	}
}