import net.minecraft.server.EntityEnderCrystal; //导入依赖的package包/类
public static boolean handleNonLivingEntityDamageEvent(Entity entity, DamageSource source, double damage, boolean cancelOnZeroDamage) {
    if (entity instanceof EntityEnderCrystal && !(source instanceof EntityDamageSource)) {
        return false;
    }

    final EnumMap<DamageModifier, Double> modifiers = new EnumMap<DamageModifier, Double>(DamageModifier.class);
    final EnumMap<DamageModifier, Function<? super Double, Double>> functions = new EnumMap(DamageModifier.class);

    modifiers.put(DamageModifier.BASE, damage);
    functions.put(DamageModifier.BASE, ZERO);

    final EntityDamageEvent event = handleEntityDamageEvent(entity, source, modifiers, functions);
    if (event == null) {
        return false;
    }
    return event.isCancelled() || (cancelOnZeroDamage && event.getDamage() == 0);
}
 

import net.minecraft.server.EntityEnderCrystal; //导入依赖的package包/类
/**
 * These entities are excluded from Activation range checks.
 *
 * @param entity
 * @param world
 * @return boolean If it should always tick.
 */
public static boolean initializeEntityActivationState(Entity entity, SpigotWorldConfig config)
{
    if ( ( entity.activationType == 3 && config.miscActivationRange == 0 )
            || ( entity.activationType == 2 && config.animalActivationRange == 0 )
            || ( entity.activationType == 1 && config.monsterActivationRange == 0 )
            || entity instanceof EntityHuman
            || entity instanceof EntityProjectile
            || entity instanceof EntityEnderDragon
            || entity instanceof EntityComplexPart
            || entity instanceof EntityWither
            || entity instanceof EntityFireball
            || entity instanceof EntityWeather
            || entity instanceof EntityTNTPrimed
            || entity instanceof EntityEnderCrystal
            || entity instanceof EntityFireworks )
    {
        return true;
    }

    return false;
}
 

import net.minecraft.server.EntityEnderCrystal; //导入依赖的package包/类
public CraftEnderCrystal(CraftServer server, EntityEnderCrystal entity) {
    super(server, entity);
}
 

import net.minecraft.server.EntityEnderCrystal; //导入依赖的package包/类
@Override
public EntityEnderCrystal getHandle() {
    return (EntityEnderCrystal) entity;
}