Package forestry.farming.triggers

Source Code of forestry.farming.triggers.TriggerLowSoil

/*******************************************************************************
* Copyright (c) 2011-2014 SirSengir.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the GNU Lesser Public License v3
* which accompanies this distribution, and is available at
* http://www.gnu.org/licenses/lgpl-3.0.txt
*
* Various Contributors including, but not limited to:
* SirSengir (original work), CovertJaguar, Player, Binnie, MysteriousAges
******************************************************************************/
package forestry.farming.triggers;

import buildcraft.api.statements.IStatementContainer;
import buildcraft.api.statements.IStatementParameter;
import forestry.api.core.ITileStructure;
import forestry.core.triggers.Trigger;
import forestry.farming.gadgets.TileFarmPlain;
import forestry.farming.gadgets.TileHatch;
import net.minecraft.init.Blocks;
import net.minecraft.item.ItemStack;
import net.minecraft.tileentity.TileEntity;
import net.minecraftforge.common.util.ForgeDirection;

public class TriggerLowSoil extends Trigger {

  private int threshold = 64;

  public TriggerLowSoil(int threshold) {
    super("lowSoil." + threshold, "lowSoil");
    this.threshold = threshold;
  }

  @Override
  public String getDescription() {
    return super.getDescription() + " < " + threshold;
  }

  @Override
  public int maxParameters() {
    return 1;
  }

  @Override
  public int minParameters() {
    return 0;
  }

  /**
   * Return true if the tile given in parameter activates the trigger, given
   * the parameters.
   */
  @Override
  public boolean isTriggerActive(TileEntity tile, ForgeDirection side, IStatementContainer source, IStatementParameter[] parameters) {
    IStatementParameter parameter = null;
    if (parameters.length > 0) {
      parameter = parameters[0];
    }

    if (!(tile instanceof TileHatch))
      return false;

    ITileStructure central = ((TileHatch) tile).getCentralTE();
    if (central == null || !(central instanceof TileFarmPlain))
      return false;

    ItemStack filter;
    if (parameter == null || parameter.getItemStack() == null) {
      filter = new ItemStack(Blocks.bedrock, threshold);
    } else {
      filter = parameter.getItemStack().copy();
      filter.stackSize = threshold;
    }

    return !((TileFarmPlain) central).hasResources(new ItemStack[] { filter });
  }
}
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