ArrowShootObjective.java

/**
 * BetonQuest - advanced quests for Bukkit
 * Copyright (C) 2016  Jakub "Co0sh" Sapalski
 * 
 * This program 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.
 * 
 * This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package pl.betoncraft.betonquest.objectives;

import org.bukkit.Bukkit;
import org.bukkit.Location;
import org.bukkit.entity.EntityType;
import org.bukkit.entity.Player;
import org.bukkit.entity.Projectile;
import org.bukkit.event.EventHandler;
import org.bukkit.event.HandlerList;
import org.bukkit.event.Listener;
import org.bukkit.event.entity.ProjectileHitEvent;
import org.bukkit.scheduler.BukkitRunnable;

import pl.betoncraft.betonquest.BetonQuest;
import pl.betoncraft.betonquest.Instruction;
import pl.betoncraft.betonquest.InstructionParseException;
import pl.betoncraft.betonquest.QuestRuntimeException;
import pl.betoncraft.betonquest.VariableNumber;
import pl.betoncraft.betonquest.api.Objective;
import pl.betoncraft.betonquest.utils.Debug;
import pl.betoncraft.betonquest.utils.LocationData;
import pl.betoncraft.betonquest.utils.PlayerConverter;

/**
 * Requires the player to shoot a target with a bow
 * 
 * @author Jakub Sapalski
 */
public class ArrowShootObjective extends Objective implements Listener {

	private final LocationData loc;
	private final VariableNumber range;

	public ArrowShootObjective(Instruction instruction) throws InstructionParseException {
		super(instruction);
		template = ObjectiveData.class;
		loc = instruction.getLocation();
		range = instruction.getVarNum();
	}

	@EventHandler
	public void onArrowHit(ProjectileHitEvent event) {
		// check if it's the arrow shot by the player with active objectve
		final Projectile arrow = event.getEntity();
		if (arrow.getType() != EntityType.ARROW) {
			return;
		}
		if (!(arrow.getShooter() instanceof Player)) {
			return;
		}
		final Player player = (Player) arrow.getShooter();
		final String playerID = PlayerConverter.getID(player);
		if (!containsPlayer(playerID)) {
			return;
		}
		try {
			final Location location = loc.getLocation(playerID);
			// check if the arrow is in the right place in the next tick
			// wait one tick, let the arrow land completely
			new BukkitRunnable() {
				@Override
				public void run() {
					Location arrowLocation = arrow.getLocation();
					if (arrowLocation == null) {
						return;
					}
					try {
						double r = range.getDouble(playerID);
						if (arrowLocation.getWorld().equals(location.getWorld())
								&& arrowLocation.distanceSquared(location) < r * r
								&& checkConditions(playerID)) {
							completeObjective(playerID);
						}
					} catch (QuestRuntimeException e) {
						Debug.error("Could not resolve range variable: " + e.getMessage());
					}
				}
			}.runTask(BetonQuest.getInstance());
		} catch (QuestRuntimeException e) {
			Debug.error("Error while handling '" + instruction.getID() + "' objective: " + e.getMessage());
		}
	}

	@Override
	public void start() {
		Bukkit.getPluginManager().registerEvents(this, BetonQuest.getInstance());
	}

	@Override
	public void stop() {
		HandlerList.unregisterAll(this);
	}

	@Override
	public String getDefaultDataInstruction() {
		return "";
	}

}