Package ch.njol.skript.expressions

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

/*
*   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 org.bukkit.entity.Entity;
import org.bukkit.event.Event;
import org.eclipse.jdt.annotation.Nullable;

import ch.njol.skript.Skript;
import ch.njol.skript.aliases.Aliases;
import ch.njol.skript.aliases.ItemType;
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.entity.EntityData;
import ch.njol.skript.expressions.base.EventValueExpression;
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.log.RetainingLogHandler;
import ch.njol.skript.log.SkriptLogger;
import ch.njol.util.Kleenean;
import ch.njol.util.StringUtils;

/**
* @author Peter Güttinger
*/
@Name("Creature/Entity/Player/Projectile/Villager/Powered Creeper/etc.")
@Description({"The entity involved in an event (an entity is a player, a creature or an inanimate object like ignited TNT, a dropped item or an arrow).",
    "You can use the specific type of the entity that's involved in the event, e.g. in a 'death of a creeper' event you can use 'the creeper' instead of 'the entity'."})
@Examples({"give a diamond sword of sharpness 3 to the player",
    "kill the creeper",
    "kill all powered creepers in the wolf's world",
    "projectile is an arrow"})
@Since("1.0")
public class ExprEntity extends SimpleExpression<Entity> {
  static {
    Skript.registerExpression(ExprEntity.class, Entity.class, ExpressionType.PATTERN_MATCHES_EVERYTHING, "[the] [event-]<.+>");
  }
 
  @SuppressWarnings("null")
  private EntityData<?> type;
 
  @SuppressWarnings("null")
  private EventValueExpression<Entity> entity;
 
  @Override
  public boolean init(final Expression<?>[] exprs, final int matchedPattern, final Kleenean isDelayed, final ParseResult parseResult) {
    final RetainingLogHandler log = SkriptLogger.startRetainingLog();
    try {
      if (!StringUtils.startsWithIgnoreCase(parseResult.expr, "the ") && !StringUtils.startsWithIgnoreCase(parseResult.expr, "event-")) {
        final ItemType item = Aliases.parseItemType("" + parseResult.regexes.get(0).group());
        log.clear();
        if (item != null) {
          log.printLog();
          return false;
        }
      }
      final EntityData<?> type = EntityData.parseWithoutIndefiniteArticle("" + parseResult.regexes.get(0).group());
      log.clear();
      log.printLog();
      if (type == null || type.isPlural().isTrue())
        return false;
      this.type = type;
    } finally {
      log.stop();
    }
    entity = new EventValueExpression<Entity>(type.getType());
    return entity.init();
  }
 
  @Override
  public boolean isSingle() {
    return true;
  }
 
  @Override
  public Class<? extends Entity> getReturnType() {
    return type.getType();
  }
 
  @Override
  @Nullable
  protected Entity[] get(final Event e) {
    final Entity[] es = entity.getArray(e);
    if (es.length == 0 || type.isInstance(es[0]))
      return es;
    return null;
  }
 
  @Override
  public String toString(final @Nullable Event e, final boolean debug) {
    return "the " + type;
  }
 
}
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