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AffectEntityEvent.java
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AffectEntityEvent.java
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/*
* This file is part of SpongeAPI, licensed under the MIT License (MIT).
*
* Copyright (c) SpongePowered <https://www.spongepowered.org>
* Copyright (c) contributors
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
package org.spongepowered.api.event.entity;
import org.spongepowered.api.entity.Entity;
import org.spongepowered.api.entity.EntitySnapshot;
import org.spongepowered.api.event.Cancellable;
import org.spongepowered.api.event.Event;
import org.spongepowered.api.event.world.TargetWorldEvent;
import org.spongepowered.api.world.Location;
import org.spongepowered.api.world.World;
import org.spongepowered.api.world.explosion.Explosion;
import java.util.ArrayList;
import java.util.List;
import java.util.function.Predicate;
/**
* An event that affects multiple {@link Entity} instances as a bulk action.
* The constraint is that if an action can be deemed as necessary for selective
* individualized processing, such as {@link DamageEntityEvent},
* the actioned {@link Event} is handled individually. If a bulk of
* {@link Entity} instances are being affected, for example by an
* {@link Explosion} "damaging" a varying amount of {@link Entity} instances.
* Other cases will be included as necessary.
*/
public interface AffectEntityEvent extends TargetWorldEvent, Cancellable {
/**
* Gets an {@link List<EntitySnapshot>} of the entity data
* un-affected by event changes.
*
* @return The ImmutableList
*/
List<EntitySnapshot> getEntitySnapshots();
/**
* Gets the {@link List<Entity>} who will be affected after event
* resolution.
*
* @return The List
*/
List<Entity> getEntities();
/**
* Filters out {@link Location<World>}'s from
* {@link AffectEntityEvent#getEntities()} to be affected by this event.
*
* <p>Locations for which the predicate returns <code>false</code> will
* be removed from {@link #getEntities()}.</p>
*
* @param predicate The predicate to use for filtering
* @return The entities removed from {@link #getEntities()}
*/
default List<Entity> filterEntityLocations(Predicate<Location<World>> predicate) {
List<Entity> removedEntiies = new ArrayList<>();
for (Entity entity : this.getEntities()) {
if (!predicate.test(entity.getLocation())) {
removedEntiies.add(entity);
}
}
return removedEntiies;
}
/**
* Filters out {@link Entity}'s from {@link AffectEntityEvent#getEntities()}
* to be affected by this event.
*
* <p>Entities for which the predicate returns <code>false</code> will
* be removed from {@link #getEntities()}.</p>
*
* @param predicate The predicate to use for filtering
* @return The entities removed from {@link #getEntities()}
*/
default List<? extends Entity> filterEntities(Predicate<Entity> predicate) {
List<Entity> removedEntiies = new ArrayList<>();
for (Entity entity : this.getEntities()) {
if (!predicate.test(entity)) {
removedEntiies.add(entity);
}
}
return removedEntiies;
}
}