/*
* 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.expressions;
import org.bukkit.entity.Entity;
import org.bukkit.event.Event;
import org.bukkit.event.vehicle.VehicleEnterEvent;
import org.bukkit.event.vehicle.VehicleExitEvent;
import org.eclipse.jdt.annotation.Nullable;
import ch.njol.skript.classes.Changer.ChangeMode;
import ch.njol.skript.classes.Converter;
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.effects.Delay;
import ch.njol.skript.entity.EntityData;
import ch.njol.skript.expressions.base.SimplePropertyExpression;
import ch.njol.util.coll.CollectionUtils;
/**
* @author Peter Güttinger
*/
@Name("Vehicle")
@Description({"The vehicle an entity is in, if any. This can actually be any entity, e.g. spider jockeys are skeletons that ride on a spider, so the spider is the 'vehicle' of the skeleton.",
"See also: <a href='#ExprPassenger'>passenger</a>"})
@Examples({"vehicle of the player is a minecart"})
@Since("2.0")
public class ExprVehicle extends SimplePropertyExpression<Entity, Entity> {
static {
register(ExprVehicle.class, Entity.class, "vehicle[s]", "entities");
}
@Override
protected Entity[] get(final Event e, final Entity[] source) {
return get(source, new Converter<Entity, Entity>() {
@Override
@Nullable
public Entity convert(final Entity p) {
if (getTime() >= 0 && e instanceof VehicleEnterEvent && p.equals(((VehicleEnterEvent) e).getEntered()) && !Delay.isDelayed(e)) {
return ((VehicleEnterEvent) e).getVehicle();
}
if (getTime() >= 0 && e instanceof VehicleExitEvent && p.equals(((VehicleExitEvent) e).getExited()) && !Delay.isDelayed(e)) {
return ((VehicleExitEvent) e).getVehicle();
}
return p.getVehicle();
}
});
}
@Override
@Nullable
public Entity convert(final Entity e) {
assert false;
return e.getVehicle();
}
@Override
public Class<? extends Entity> getReturnType() {
return Entity.class;
}
@Override
protected String getPropertyName() {
return "vehicle";
}
@Override
@Nullable
public Class<?>[] acceptChange(final ChangeMode mode) {
if (mode == ChangeMode.SET) {
return new Class[] {Entity.class, EntityData.class};
}
return super.acceptChange(mode);
}
@Override
public void change(final Event e, final @Nullable Object[] delta, final ChangeMode mode) {
if (mode == ChangeMode.SET) {
assert delta != null;
final Entity[] ps = getExpr().getArray(e);
if (ps.length == 0)
return;
final Object o = delta[0];
if (o instanceof Entity) {
((Entity) o).eject();
final Entity p = CollectionUtils.getRandom(ps);
assert p != null;
p.leaveVehicle();
((Entity) o).setPassenger(p);
} else if (o instanceof EntityData) {
for (final Entity p : ps) {
@SuppressWarnings("null")
final Entity v = ((EntityData<?>) o).spawn(p.getLocation());
if (v == null)
continue;
v.setPassenger(p);
}
} else {
assert false;
}
} else {
super.change(e, delta, mode);
}
}
@SuppressWarnings("unchecked")
@Override
public boolean setTime(final int time) {
return super.setTime(time, getExpr(), VehicleEnterEvent.class, VehicleExitEvent.class);
}
}