Entity Wont Attack

So I'm trying to make an biped entity that will fight mobs. It tries to attack the mobs it runs up to them and is colliding with them, but they wont play there attack animation and ultimately wont hit the mobs. When i switched the entity base to a zombie it would play its attack animation, but then it would act to much like a zombie like burning in sunlight and attacking villagers. I was just hoping that somebody would know what I'm missing to allow them to be able to attack. P.s I'm very new to coding so i don't know a lot yet.

Code for my entity

package net.mcreator.biomes.entity;

import net.minecraftforge.fml.relauncher.SideOnly;
import net.minecraftforge.fml.relauncher.Side;
import net.minecraftforge.fml.common.registry.EntityRegistry;
import net.minecraftforge.fml.common.registry.EntityEntryBuilder;
import net.minecraftforge.fml.common.event.FMLPreInitializationEvent;
import net.minecraftforge.fml.common.event.FMLInitializationEvent;
import net.minecraftforge.fml.client.registry.RenderingRegistry;

import net.minecraft.world.biome.Biome;
import net.minecraft.world.World;
import net.minecraft.util.ResourceLocation;
import net.minecraft.util.DamageSource;
import net.minecraft.item.ItemStack;
import net.minecraft.item.Item;
import net.minecraft.inventory.EntityEquipmentSlot;
import net.minecraft.init.Items;
import net.minecraft.entity.passive.EntityVillager;
import net.minecraft.entity.monster.EntityMob;
import net.minecraft.entity.ai.EntityAIWatchClosest;
import net.minecraft.entity.ai.EntityAIWander;
import net.minecraft.entity.ai.EntityAISwimming;
import net.minecraft.entity.ai.EntityAINearestAttackableTarget;
import net.minecraft.entity.ai.EntityAILookIdle;
import net.minecraft.entity.ai.EntityAIHurtByTarget;
import net.minecraft.entity.ai.EntityAIFollow;
import net.minecraft.entity.ai.EntityAIAttackMelee;
import net.minecraft.entity.SharedMonsterAttributes;
import net.minecraft.entity.EnumCreatureType;
import net.minecraft.entity.EnumCreatureAttribute;
import net.minecraft.entity.EntityLivingBase;
import net.minecraft.entity.EntityCreature;
import net.minecraft.entity.Entity;
import net.minecraft.client.renderer.entity.RenderBiped;
import net.minecraft.client.model.ModelBiped;

import net.mcreator.biomes.procedure.ProcedureBarbarianThisEntityKillsAnotherOne;
import net.mcreator.biomes.ElementsBiomes;

import java.util.Iterator;
import java.util.ArrayList;

@ElementsBiomes.ModElement.Tag
public class EntityBarbarian extends ElementsBiomes.ModElement {
    public static final int ENTITYID = 5;
    public static final int ENTITYID_RANGED = 6;
    public EntityBarbarian(ElementsBiomes instance) {
        super(instance, 34);
    }

    @Override
    public void initElements() {
        elements.entities.add(() -> EntityEntryBuilder.create().entity(EntityCustom.class).id(new ResourceLocation("biomes", "barbarian"), ENTITYID)
                .name("barbarian").tracker(64, 3, true).egg(-11062009, -16777216).build());
    }

    @Override
    public void init(FMLInitializationEvent event) {
        Biome[] spawnBiomes = allbiomes(Biome.REGISTRY);
        EntityRegistry.addSpawn(EntityCustom.class, 20, 3, 10, EnumCreatureType.CREATURE, spawnBiomes);
    }

    private Biome[] allbiomes(net.minecraft.util.registry.RegistryNamespaced<ResourceLocation, Biome> in) {
        Iterator<Biome> itr = in.iterator();
        ArrayList<Biome> ls = new ArrayList<Biome>();
        while (itr.hasNext())
            ls.add(itr.next());
        return ls.toArray(new Biome[ls.size()]);
    }

    @SideOnly(Side.CLIENT)
    @Override
    public void preInit(FMLPreInitializationEvent event) {
        RenderingRegistry.registerEntityRenderingHandler(EntityCustom.class, renderManager -> {
            RenderBiped customRender = new RenderBiped(renderManager, new ModelBiped(), 0.5f) {
                protected ResourceLocation getEntityTexture(Entity entity) {
                    return new ResourceLocation("biomes:textures/barb.png");
                }
            };
            customRender.addLayer(new net.minecraft.client.renderer.entity.layers.LayerBipedArmor(customRender) {
                protected void initArmor() {
                    this.modelLeggings = new ModelBiped(0.5f);
                    this.modelArmor = new ModelBiped(1);
                }
            });
            return customRender;
        });
    }
    public static class EntityCustom extends EntityCreature {
        public EntityCustom(World world) {
            super(world);
            setSize(0.6f, 1.8f);
            experienceValue = 5;
            this.isImmuneToFire = false;
            setNoAI(!true);
            this.setItemStackToSlot(EntityEquipmentSlot.MAINHAND, new ItemStack(Items.IRON_SWORD, (int) (1)));
        }

        @Override
        protected void initEntityAI() {
            super.initEntityAI();
            this.tasks.addTask(1, new EntityAIWander(this, 1));
            this.tasks.addTask(2, new EntityAILookIdle(this));
            this.tasks.addTask(3, new EntityAISwimming(this));
            this.targetTasks.addTask(4, new EntityAIHurtByTarget(this, false));
            this.targetTasks.addTask(5, new EntityAINearestAttackableTarget(this, EntityMob.class, false, false));
            this.tasks.addTask(6, new EntityAIAttackMelee(this, 1.2, true));
            this.tasks.addTask(7, new EntityAIFollow(this, (float) 1, 10, 5));
            this.tasks.addTask(8, new EntityAIWatchClosest(this, EntityVillager.class, (float) 6));
        }

        @Override
        public EnumCreatureAttribute getCreatureAttribute() {
            return EnumCreatureAttribute.UNDEFINED;
        }

        @Override
        protected Item getDropItem() {
            return null;
        }

        @Override
        public net.minecraft.util.SoundEvent getAmbientSound() {
            return (net.minecraft.util.SoundEvent) net.minecraft.util.SoundEvent.REGISTRY.getObject(new ResourceLocation(""));
        }

        @Override
        public net.minecraft.util.SoundEvent getHurtSound(DamageSource ds) {
            return (net.minecraft.util.SoundEvent) net.minecraft.util.SoundEvent.REGISTRY.getObject(new ResourceLocation("entity.generic.hurt"));
        }

        @Override
        public net.minecraft.util.SoundEvent getDeathSound() {
            return (net.minecraft.util.SoundEvent) net.minecraft.util.SoundEvent.REGISTRY.getObject(new ResourceLocation("entity.generic.death"));
        }

        @Override
        protected float getSoundVolume() {
            return 1.0F;
        }

        @Override
        public boolean attackEntityFrom(DamageSource source, float amount) {
            if (source == DamageSource.FALL)
                return false;
            return super.attackEntityFrom(source, amount);
        }

        @Override
        public void onKillEntity(EntityLivingBase entity) {
            super.onKillEntity(entity);
            int x = (int) this.posX;
            int y = (int) this.posY;
            int z = (int) this.posZ;
            {
                java.util.HashMap<String, Object> $_dependencies = new java.util.HashMap<>();
                $_dependencies.put("entity", entity);
                ProcedureBarbarianThisEntityKillsAnotherOne.executeProcedure($_dependencies);
            }
        }

        @Override
        protected void applyEntityAttributes() {
            super.applyEntityAttributes();
            if (this.getEntityAttribute(SharedMonsterAttributes.ARMOR) != null)
                this.getEntityAttribute(SharedMonsterAttributes.ARMOR).setBaseValue(0D);
            if (this.getEntityAttribute(SharedMonsterAttributes.MOVEMENT_SPEED) != null)
                this.getEntityAttribute(SharedMonsterAttributes.MOVEMENT_SPEED).setBaseValue(0.3D);
            if (this.getEntityAttribute(SharedMonsterAttributes.MAX_HEALTH) != null)
                this.getEntityAttribute(SharedMonsterAttributes.MAX_HEALTH).setBaseValue(10D);
            if (this.getEntityAttribute(SharedMonsterAttributes.ATTACK_DAMAGE) != null)
                this.getEntityAttribute(SharedMonsterAttributes.ATTACK_DAMAGE).setBaseValue(3D);
        }
    }
}