/*
* 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, 2012 Peter Güttinger
*
*/
package ch.njol.skript.hooks.regions.events;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Set;
import org.bukkit.Bukkit;
import org.bukkit.Location;
import org.bukkit.entity.Player;
import org.bukkit.event.Event;
import org.bukkit.event.EventException;
import org.bukkit.event.Listener;
import org.bukkit.event.player.PlayerMoveEvent;
import org.bukkit.event.player.PlayerPortalEvent;
import org.bukkit.event.player.PlayerTeleportEvent;
import org.bukkit.plugin.EventExecutor;
import org.eclipse.jdt.annotation.Nullable;
import ch.njol.skript.Skript;
import ch.njol.skript.SkriptConfig;
import ch.njol.skript.hooks.regions.RegionsPlugin;
import ch.njol.skript.hooks.regions.classes.Region;
import ch.njol.skript.lang.Literal;
import ch.njol.skript.lang.SelfRegisteringSkriptEvent;
import ch.njol.skript.lang.SkriptParser.ParseResult;
import ch.njol.skript.lang.Trigger;
import ch.njol.skript.registrations.EventValues;
import ch.njol.skript.util.Getter;
import ch.njol.util.Checker;
/**
* @author Peter Güttinger
*/
public class EvtRegionBorder extends SelfRegisteringSkriptEvent {
static {
Skript.registerEvent("Region Enter/Leave", EvtRegionBorder.class, RegionBorderEvent.class,
"(0¦enter[ing]|1¦leav(e|ing)|1¦exit[ing]) [of] ([a] region|[[the] region] %-regions%)",
"region (0¦enter[ing]|1¦leav(e|ing)|1¦exit[ing])")
.description("Called when a player enters or leaves a <a href='../classes/#region'>region</a>.",
"This event requires a supported regions plugin to be installed.")
.examples("on region exit:",
" message \"Leaving %region%.\"")
.since("2.1");
EventValues.registerEventValue(RegionBorderEvent.class, Region.class, new Getter<Region, RegionBorderEvent>() {
@Override
public Region get(final RegionBorderEvent e) {
return e.getRegion();
}
}, 0);
EventValues.registerEventValue(RegionBorderEvent.class, Player.class, new Getter<Player, RegionBorderEvent>() {
@Override
public Player get(final RegionBorderEvent e) {
return e.getPlayer();
}
}, 0);
}
private boolean enter;
@Nullable
private Literal<Region> regions;
@SuppressWarnings("unchecked")
@Override
public boolean init(final Literal<?>[] args, final int matchedPattern, final ParseResult parseResult) {
enter = parseResult.mark == 0;
regions = args.length == 0 ? null : (Literal<Region>) args[0];
return true;
}
@Override
public String toString(final @Nullable Event e, final boolean debug) {
final Literal<Region> r = regions;
return (enter ? "enter" : "leave") + " of " + (r == null ? "a region" : r.toString(e, debug));
}
private final static Collection<Trigger> triggers = new ArrayList<Trigger>();
@Override
public void register(final Trigger t) {
triggers.add(t);
register();
}
@Override
public void unregister(final Trigger t) {
triggers.remove(t);
}
@Override
public void unregisterAll() {
triggers.clear();
}
private boolean applies(final Event e) {
assert e instanceof RegionBorderEvent;
if (enter != ((RegionBorderEvent) e).isEntering())
return false;
final Literal<Region> r = regions;
if (r == null)
return true;
final Region re = ((RegionBorderEvent) e).getRegion();
return r.check(e, new Checker<Region>() {
@Override
public boolean check(final Region r) {
return r.equals(re);
}
});
}
final static void callEvent(final Region r, final PlayerMoveEvent me, final boolean enter) {
final Player p = me.getPlayer();
assert p != null;
final RegionBorderEvent e = new RegionBorderEvent(r, p, enter);
e.setCancelled(me.isCancelled());
for (final Trigger t : triggers) {
if (((EvtRegionBorder) t.getEvent()).applies(e))
t.execute(e);
}
me.setCancelled(e.isCancelled());
}
// even WorldGuard doesn't have events, and this way all region plugins are supported for sure.
private final static EventExecutor ee = new EventExecutor() {
@Nullable
Event last = null;
@SuppressWarnings("null")
@Override
public void execute(final @Nullable Listener listener, final Event event) throws EventException {
if (event == last)
return;
last = event;
final PlayerMoveEvent e = (PlayerMoveEvent) event;
final Location to = e.getTo(), from = e.getFrom();
if (to.equals(from))
return;
final Set<? extends Region> oldRs = RegionsPlugin.getRegionsAt(from), newRs = RegionsPlugin.getRegionsAt(to);
for (final Region r : oldRs) {
if (!newRs.contains(r))
callEvent(r, e, false);
}
for (final Region r : newRs) {
if (!oldRs.contains(r))
callEvent(r, e, true);
}
}
};
private static boolean registered = false;
private final static void register() {
if (registered)
return;
Bukkit.getPluginManager().registerEvent(PlayerMoveEvent.class, new Listener() {}, SkriptConfig.defaultEventPriority.value(), ee, Skript.getInstance(), true);
Bukkit.getPluginManager().registerEvent(PlayerTeleportEvent.class, new Listener() {}, SkriptConfig.defaultEventPriority.value(), ee, Skript.getInstance(), true);
Bukkit.getPluginManager().registerEvent(PlayerPortalEvent.class, new Listener() {}, SkriptConfig.defaultEventPriority.value(), ee, Skript.getInstance(), true);
registered = true;
}
}