org.bukkit.event.block.BlockPistonExtendEvent Maven / Gradle / Ivy

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package org.bukkit.event.block;

import org.bukkit.block.Block;
import org.bukkit.block.BlockFace;
import org.bukkit.event.HandlerList;

import java.util.ArrayList;
import java.util.Collections;
import java.util.List;

/**
 * Called when a piston extends
 */
public class BlockPistonExtendEvent extends BlockPistonEvent {
  private static final HandlerList handlers = new HandlerList();
  private final int length;
  private List blocks;

  @Deprecated
  public BlockPistonExtendEvent(final Block block, final int length, final BlockFace direction) {
    super(block, direction);

    this.length = length;
  }

  public BlockPistonExtendEvent(final Block block, final List blocks, final BlockFace direction) {
    super(block, direction);

    this.length = blocks.size();
    this.blocks = blocks;
  }

  public static HandlerList getHandlerList() {
    return handlers;
  }

  /**
   * Get the amount of blocks which will be moved while extending.
   *
   * @return the amount of moving blocks
   * @deprecated slime blocks make the value of this method
   * inaccurate due to blocks being pushed at the side
   */
  @Deprecated
  public int getLength() {
    return this.length;
  }

  /**
   * Get an immutable list of the blocks which will be moved by the
   * extending.
   *
   * @return Immutable list of the moved blocks.
   */
  public List getBlocks() {
    if (blocks == null) {
      ArrayList tmp = new ArrayList();
      for (int i = 0; i < this.getLength(); i++) {
        tmp.add(block.getRelative(getDirection(), i + 1));
      }
      blocks = Collections.unmodifiableList(tmp);
    }
    return blocks;
  }

  @Override
  public HandlerList getHandlers() {
    return handlers;
  }
}