Package ch.njol.skript.expressions

Source Code of ch.njol.skript.expressions.ExprBlocks

/*
*   This file is part of Skript.
*
*  Skript is free software: you can redistribute it and/or modify
*  it under the terms of the GNU General Public License as published by
*  the Free Software Foundation, either version 3 of the License, or
*  (at your option) any later version.
*
*  Skript 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 General Public License for more details.
*
*  You should have received a copy of the GNU General Public License
*  along with Skript.  If not, see <http://www.gnu.org/licenses/>.
*
*
* Copyright 2011-2014 Peter Güttinger
*
*/

package ch.njol.skript.expressions;

import java.util.ArrayList;
import java.util.Iterator;

import org.bukkit.Location;
import org.bukkit.block.Block;
import org.bukkit.event.Event;
import org.eclipse.jdt.annotation.Nullable;

import ch.njol.skript.Skript;
import ch.njol.skript.SkriptConfig;
import ch.njol.skript.doc.Description;
import ch.njol.skript.doc.Examples;
import ch.njol.skript.doc.Name;
import ch.njol.skript.doc.Since;
import ch.njol.skript.lang.Expression;
import ch.njol.skript.lang.ExpressionType;
import ch.njol.skript.lang.SkriptParser.ParseResult;
import ch.njol.skript.lang.util.SimpleExpression;
import ch.njol.skript.util.BlockLineIterator;
import ch.njol.skript.util.Direction;
import ch.njol.util.Kleenean;
import ch.njol.util.coll.iterator.ArrayIterator;
import ch.njol.util.coll.iterator.IteratorIterable;

/**
* @author Peter Güttinger
*/
@Name("Blocks")
@Description("Blocks relative to other blocks or between other blocks. Can be used to get blocks relative to other blocks or for looping.")
@Examples({"loop blocks above the player:",
    "loop blocks between the block below the player and the targeted block:",
    "set the blocks below the player, the victim and the targeted block to air"})
@Since("1.0")
public class ExprBlocks extends SimpleExpression<Block> {
  static {
    Skript.registerExpression(ExprBlocks.class, Block.class, ExpressionType.COMBINED,
        "[the] blocks %direction% [%locations%]", // TODO doesn't loop all blocks?
        "[the] blocks from %location% [on] %direction%",
        "[the] blocks from %block% to %block%",
        "[the] blocks between %block% and %block%");
  }
 
  @SuppressWarnings("null")
  private Expression<?> from;
  @Nullable
  private Expression<Block> end;
  @Nullable
  private Expression<Direction> direction;
 
  @SuppressWarnings({"unchecked", "null"})
  @Override
  public boolean init(final Expression<?>[] exprs, final int matchedPattern, final Kleenean isDelayed, final ParseResult parser) {
    switch (matchedPattern) {
      case 0:
        direction = (Expression<Direction>) exprs[0];
        from = exprs[1];
        break;
      case 1:
        from = exprs[0];
        direction = (Expression<Direction>) exprs[1];
        break;
      case 2:
      case 3:
        from = exprs[0];
        end = (Expression<Block>) exprs[1];
        break;
      default:
        assert false : matchedPattern;
        return false;
    }
    return true;
  }
 
  @SuppressWarnings("null")
  @Override
  @Nullable
  protected Block[] get(final Event e) {
    final Expression<Direction> direction = this.direction;
    if (direction != null && !from.isSingle()) {
      final Location[] ls = (Location[]) from.getArray(e);
      final Direction d = direction.getSingle(e);
      if (ls.length == 0 || d == null)
        return new Block[0];
      final Block[] bs = new Block[ls.length];
      for (int i = 0; i < ls.length; i++) {
        bs[i] = d.getRelative(ls[i]).getBlock();
      }
      return bs;
    }
    final ArrayList<Block> r = new ArrayList<Block>();
    final Iterator<Block> iter = iterator(e);
    if (iter == null)
      return new Block[0];
    for (final Block b : new IteratorIterable<Block>(iter))
      r.add(b);
    return r.toArray(new Block[r.size()]);
  }
 
  @Override
  @Nullable
  public Iterator<Block> iterator(final Event e) {
    try {
      final Expression<Direction> direction = this.direction;
      if (direction != null) {
        if (!from.isSingle()) {
          return new ArrayIterator<Block>(get(e));
        }
        final Object o = from.getSingle(e);
        if (o == null)
          return null;
        final Location l = o instanceof Location ? (Location) o : ((Block) o).getLocation().add(0.5, 0.5, 0.5);
        final Direction d = direction.getSingle(e);
        if (d == null)
          return null;
        if (l.getBlock() == null)
          return null;
        return new BlockLineIterator(l, o != l ? d.getDirection((Block) o) : d.getDirection(l), SkriptConfig.maxTargetBlockDistance.value());
      } else {
        final Block b = (Block) from.getSingle(e);
        if (b == null)
          return null;
        assert end != null;
        final Block b2 = end.getSingle(e);
        if (b2 == null || b2.getWorld() != b.getWorld())
          return null;
        return new BlockLineIterator(b, b2);
      }
    } catch (final IllegalStateException ex) {
      if (ex.getMessage().equals("Start block missed in BlockIterator"))
        return null;
      throw ex;
    }
  }
 
  @Override
  public Class<? extends Block> getReturnType() {
    return Block.class;
  }
 
  @Override
  public boolean isSingle() {
    return false;
  }
 
  @Override
  public String toString(final @Nullable Event e, final boolean debug) {
    final Expression<Block> end = this.end;
    if (end != null) {
      return "blocks from " + from.toString(e, debug) + " to " + end.toString(e, debug);
    } else {
      final Expression<Direction> direction = this.direction;
      assert direction != null;
      return "block" + (isSingle() ? "" : "s") + " " + direction.toString(e, debug) + " " + from.toString(e, debug);
    }
  }
 
}
TOP

Related Classes of ch.njol.skript.expressions.ExprBlocks

TOP
Copyright © 2018 www.massapi.com. All rights reserved.
All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.