minecraft-kajetans-mod/src/main/java/me/km/effects/active/Earthquake.java

package me.km.effects.active;

import me.km.effects.ActiveEffectBase;
import me.km.effects.EffectUtils;
import net.minecraft.entity.player.EntityPlayerMP;
import net.minecraft.util.DamageSource;
import net.minecraft.util.EnumParticleTypes;
import net.minecraft.util.math.Vec3d;
import net.minecraft.world.WorldServer;

public class Earthquake extends ActiveEffectBase
{
    @Override
    protected boolean executeEffect(EntityPlayerMP p, int power) 
    {
        int[] data = new int[]{4};
        WorldServer w = p.getServerWorld();
        Vec3d v = p.getPositionVector();
        EffectUtils.playEffectCircleWithData(w, v, EnumParticleTypes.BLOCK_CRACK, 5, 12, data);
        EffectUtils.playEffectCircleWithData(w, v, EnumParticleTypes.BLOCK_CRACK, 4, 12, data);
        EffectUtils.playEffectCircleWithData(w, v, EnumParticleTypes.BLOCK_CRACK, 3, 12, data);
        EffectUtils.playEffectCircleWithData(w, v, EnumParticleTypes.BLOCK_CRACK, 2, 12, data);
        EffectUtils.playEffectCircleWithData(w, v, EnumParticleTypes.BLOCK_CRACK, 1, 12, data);
        DamageSource ds = DamageSource.causeMobDamage(p);
        EffectUtils.getEntsOfNotGuild(p, 5).stream().forEach((m) -> 
        {
            m.attackEntityFrom(ds, power * 4);                           
        });
        return true;
    } 

    @Override
    protected int getManaCost(int manaFactor) 
    {
        return 8 * manaFactor;
    }
}