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package org.bukkit.potion;
import java.util.Map;
import java.util.NoSuchElementException;
import org.apache.commons.lang.Validate;
import org.bukkit.configuration.serialization.ConfigurationSerializable;
import org.bukkit.configuration.serialization.SerializableAs;
import org.bukkit.entity.LivingEntity;
import com.google.common.collect.ImmutableMap;
/**
* Represents a potion effect, that can be added to a {@link LivingEntity}. A
* potion effect has a duration that it will last for, an amplifier that will
* enhance its effects, and a {@link PotionEffectType}, that represents its
* effect on an entity.
*/
@SerializableAs("PotionEffect")
public class PotionEffect implements ConfigurationSerializable {
private static final String AMPLIFIER = "amplifier";
private static final String DURATION = "duration";
private static final String TYPE = "effect";
private static final String AMBIENT = "ambient";
private static final String PARTICLES = "has-particles";
private final int amplifier;
private final int duration;
private final PotionEffectType type;
private final boolean ambient;
private final boolean particles;
/**
* Creates a potion effect.
* @param type effect type
* @param duration measured in ticks, see {@link
* PotionEffect#getDuration()}
* @param amplifier the amplifier, see {@link PotionEffect#getAmplifier()}
* @param ambient the ambient status, see {@link PotionEffect#isAmbient()}
* @param particles the particle status, see {@link PotionEffect#hasParticles()}
*/
public PotionEffect(PotionEffectType type, int duration, int amplifier, boolean ambient, boolean particles){
Validate.notNull(type, "effect type cannot be null");
this.type = type;
this.duration = duration;
this.amplifier = amplifier;
this.ambient = ambient;
this.particles = particles;
}
/**
* Creates a potion effect. Assumes that particles are visible
*
* @param type effect type
* @param duration measured in ticks, see {@link
* PotionEffect#getDuration()}
* @param amplifier the amplifier, see {@link PotionEffect#getAmplifier()}
* @param ambient the ambient status, see {@link PotionEffect#isAmbient()}
*/
public PotionEffect(PotionEffectType type, int duration, int amplifier, boolean ambient) {
this(type, duration, amplifier, ambient, true);
}
/**
* Creates a potion effect. Assumes ambient is true.
*
* @param type Effect type
* @param duration measured in ticks
* @param amplifier the amplifier for the effect
* @see PotionEffect#PotionEffect(PotionEffectType, int, int, boolean)
*/
public PotionEffect(PotionEffectType type, int duration, int amplifier) {
this(type, duration, amplifier, true);
}
/**
* Constructor for deserialization.
*
* @param map the map to deserialize from
*/
public PotionEffect(Map<String, Object> map) {
this(getEffectType(map), getInt(map, DURATION), getInt(map, AMPLIFIER), getBool(map, AMBIENT, false), getBool(map, PARTICLES, true));
}
private static PotionEffectType getEffectType(Map<?,?> map) {
int type = getInt(map, TYPE);
PotionEffectType effect = PotionEffectType.getById(type);
if (effect != null) {
return effect;
}
throw new NoSuchElementException(map + " does not contain " + TYPE);
}
private static int getInt(Map<?,?> map, Object key) {
Object num = map.get(key);
if (num instanceof Integer) {
return (Integer) num;
}
throw new NoSuchElementException(map + " does not contain " + key);
}
private static boolean getBool(Map<?,?> map, Object key, boolean def) {
Object bool = map.get(key);
if (bool instanceof Boolean) {
return (Boolean) bool;
}
return def;
}
public Map<String, Object> serialize() {
return ImmutableMap.<String, Object>of(
TYPE, type.getId(),
DURATION, duration,
AMPLIFIER, amplifier,
AMBIENT, ambient,
PARTICLES, particles
);
}
/**
* Attempts to add the effect represented by this object to the given
* {@link LivingEntity}.
*
* @see LivingEntity#addPotionEffect(PotionEffect)
* @param entity The entity to add this effect to
* @return Whether the effect could be added
*/
public boolean apply(LivingEntity entity) {
return entity.addPotionEffect(this);
}
@Override
public boolean equals(Object obj) {
if (this == obj) {
return true;
}
if (!(obj instanceof PotionEffect)) {
return false;
}
PotionEffect that = (PotionEffect) obj;
return this.type.equals(that.type) && this.ambient == that.ambient && this.amplifier == that.amplifier && this.duration == that.duration && this.particles == that.particles;
}
/**
* Returns the amplifier of this effect. A higher amplifier means the
* potion effect happens more often over its duration and in some cases
* has more effect on its target.
*
* @return The effect amplifier
*/
public int getAmplifier() {
return amplifier;
}
/**
* Returns the duration (in ticks) that this effect will run for when
* applied to a {@link LivingEntity}.
*
* @return The duration of the effect
*/
public int getDuration() {
return duration;
}
/**
* Returns the {@link PotionEffectType} of this effect.
*
* @return The potion type of this effect
*/
public PotionEffectType getType() {
return type;
}
/**
* Makes potion effect produce more, translucent, particles.
*
* @return if this effect is ambient
*/
public boolean isAmbient() {
return ambient;
}
/**
* @return whether this effect has particles or not
*/
public boolean hasParticles(){
return particles;
}
@Override
public int hashCode() {
int hash = 1;
hash = hash * 31 + type.hashCode();
hash = hash * 31 + amplifier;
hash = hash * 31 + duration;
hash ^= 0x22222222 >> (ambient ? 1 : -1);
hash ^= 0x22222222 >> (particles ? 1 : -1);
return hash;
}
@Override
public String toString() {
return type.getName() + (ambient ? ":(" : ":") + duration + "t-x" + amplifier + (ambient ? ")" : "");
}
}
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