Applied-Energistics-2-tilera-Edition/src/main/java/appeng/tile/networking/TileController.java

/*
 * This file is part of Applied Energistics 2.
 * Copyright (c) 2013 - 2015, AlgorithmX2, All rights reserved.
 *
 * Applied Energistics 2 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, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Applied Energistics 2 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 Applied Energistics 2.  If not, see <http://www.gnu.org/licenses/lgpl>.
 */

package appeng.tile.networking;

import java.util.EnumSet;

import appeng.api.config.Actionable;
import appeng.api.networking.GridFlags;
import appeng.api.networking.events.MENetworkControllerChange;
import appeng.api.networking.events.MENetworkEventSubscribe;
import appeng.api.networking.events.MENetworkPowerStatusChange;
import appeng.api.networking.events.MENetworkPowerStorage;
import appeng.api.networking.events.MENetworkPowerStorage.PowerEventType;
import appeng.api.networking.pathing.ControllerState;
import appeng.api.util.AECableType;
import appeng.me.GridAccessException;
import appeng.tile.grid.AENetworkPowerTile;
import appeng.tile.inventory.AppEngInternalInventory;
import appeng.tile.inventory.InvOperation;
import net.minecraft.inventory.IInventory;
import net.minecraft.item.ItemStack;
import net.minecraftforge.common.util.ForgeDirection;

public class TileController extends AENetworkPowerTile {
    private static final IInventory NULL_INVENTORY = new AppEngInternalInventory(null, 0);
    private static final int[] ACCESSIBLE_SLOTS_BY_SIDE = {};

    private boolean isValid = false;

    public TileController() {
        this.setInternalMaxPower(8000);
        this.setInternalPublicPowerStorage(true);
        this.getProxy().setIdlePowerUsage(3);
        this.getProxy().setFlags(GridFlags.CANNOT_CARRY, GridFlags.DENSE_CAPACITY);
    }

    @Override
    public AECableType getCableConnectionType(final ForgeDirection dir) {
        return AECableType.DENSE;
    }

    @Override
    public void onReady() {
        this.onNeighborChange(true);
        super.onReady();
    }

    public void onNeighborChange(final boolean force) {
        final boolean xx = this.checkController(this.xCoord - 1, this.yCoord, this.zCoord)
            && this.checkController(this.xCoord + 1, this.yCoord, this.zCoord);
        final boolean yy = this.checkController(this.xCoord, this.yCoord - 1, this.zCoord)
            && this.checkController(this.xCoord, this.yCoord + 1, this.zCoord);
        final boolean zz = this.checkController(this.xCoord, this.yCoord, this.zCoord - 1)
            && this.checkController(this.xCoord, this.yCoord, this.zCoord + 1);

        // int meta = world.getBlockMetadata( xCoord, yCoord, zCoord );
        // boolean hasPower = meta > 0;
        // boolean isConflict = meta == 2;

        final boolean oldValid = this.isValid;

        this.isValid = (xx && !yy && !zz) || (!xx && yy && !zz) || (!xx && !yy && zz)
            || ((xx ? 1 : 0) + (yy ? 1 : 0) + (zz ? 1 : 0) <= 1);

        if (oldValid != this.isValid || force) {
            if (this.isValid) {
                this.getProxy().setValidSides(EnumSet.allOf(ForgeDirection.class));
            } else {
                this.getProxy().setValidSides(EnumSet.noneOf(ForgeDirection.class));
            }

            this.updateMeta();
        }
    }

    private void updateMeta() {
        if (!this.getProxy().isReady()) {
            return;
        }

        int meta = 0;

        try {
            if (this.getProxy().getEnergy().isNetworkPowered()) {
                meta = 1;

                if (this.getProxy().getPath().getControllerState()
                    == ControllerState.CONTROLLER_CONFLICT) {
                    meta = 2;
                }
            }
        } catch (final GridAccessException e) {
            meta = 0;
        }

        if (this.checkController(this.xCoord, this.yCoord, this.zCoord)
            && this.worldObj.getBlockMetadata(this.xCoord, this.yCoord, this.zCoord)
                != meta) {
            this.worldObj.setBlockMetadataWithNotify(
                this.xCoord, this.yCoord, this.zCoord, meta, 2
            );
        }
    }

    @Override
    protected double getFunnelPowerDemand(final double maxReceived) {
        try {
            return this.getProxy().getEnergy().getEnergyDemand(8000);
        } catch (final GridAccessException e) {
            // no grid? use local...
            return super.getFunnelPowerDemand(maxReceived);
        }
    }

    @Override
    protected double funnelPowerIntoStorage(final double power, final Actionable mode) {
        try {
            final double ret = this.getProxy().getEnergy().injectPower(power, mode);
            if (mode == Actionable.SIMULATE) {
                return ret;
            }
            return 0;
        } catch (final GridAccessException e) {
            // no grid? use local...
            return super.funnelPowerIntoStorage(power, mode);
        }
    }

    @Override
    protected void PowerEvent(final PowerEventType x) {
        try {
            this.getProxy().getGrid().postEvent(new MENetworkPowerStorage(this, x));
        } catch (final GridAccessException e) {
            // not ready!
        }
    }

    @MENetworkEventSubscribe
    public void onControllerChange(final MENetworkControllerChange status) {
        this.updateMeta();
    }

    @MENetworkEventSubscribe
    public void onPowerChange(final MENetworkPowerStatusChange status) {
        this.updateMeta();
    }

    @Override
    public IInventory getInternalInventory() {
        return NULL_INVENTORY;
    }

    @Override
    public void onChangeInventory(
        final IInventory inv,
        final int slot,
        final InvOperation mc,
        final ItemStack removed,
        final ItemStack added
    ) {}

    @Override
    public int[] getAccessibleSlotsBySide(final ForgeDirection side) {
        return ACCESSIBLE_SLOTS_BY_SIDE;
    }

    /**
     * Check for a controller at this coordinates as well as is it loaded.
     *
     * @return true if there is a loaded controller
     */
    private boolean checkController(final int x, final int y, final int z) {
        if (this.worldObj.getChunkProvider().chunkExists(
                this.xCoord >> 4, this.zCoord >> 4
            )) {
            return this.worldObj.getTileEntity(x, y, z) instanceof TileController;
        }
        return false;
    }
}