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Entity AI: Getting Custom Mob to attack vanilla creatures

Posted November 18, 201311 yr

I made a custom mob (called an infected) which is essentially a zombie that does't burn in the sun. Im trying to get it to attack passive mobs (like cows, sheep, etc.) as well as players and villagers. However, nothing I do seems to be working.

I've tried adding the following code into the constructor :

this.targetTasks.addTask(2, new EntityAINearestAttackableTarget(this, EntityCow.class, 0, false));

But that doesnt seem to work. I have tried using different priorities, removing all the target tasks but that one, and looked though the various classes that make up AI. I'm at a loss for what to do at this point. My Mob is extending the EntityMob class.

Here is my full infected classes

public class infected extends EntityMob{

protected static final Attribute field_110186_bp = (new RangedAttribute("zombie.spawnReinforcements", 0.0D, 0.0D, 1.0D)).func_111117_a("Spawn Reinforcements Chance");
    private static final UUID babySpeedBoostUUID = UUID.fromString("B9766B59-9566-4402-BC1F-2EE2A276D836");
    private static final AttributeModifier babySpeedBoostModifier = new AttributeModifier(babySpeedBoostUUID, "Baby speed boost", 0.5D, 1);

    /**
     * Ticker used to determine the time remaining for this zombie to convert into a villager when cured.
     */
    private int conversionTime;

    public infected(World par1World)
    {
        super(par1World);
        this.getNavigator().setBreakDoors(true);
        this.getNavigator().setEnterDoors(true);

        //this.tasks.addTask(0, new EntityAISwimming(this));
        this.tasks.addTask(0, new EntityAIBreakDoor(this));
        this.tasks.addTask(1, new EntityAIAttackOnCollide(this, EntityPlayer.class, 1.0D, false));
        this.tasks.addTask(2, new EntityAIAttackOnCollide(this, EntityVillager.class, 1.0D, true));
        this.tasks.addTask(3, new EntityAIMoveTowardsRestriction(this, 1.0D));
        this.tasks.addTask(4, new EntityAIMoveThroughVillage(this, 1.0D, false));
        this.tasks.addTask(5, new EntityAIWander(this, 1.0D));
        this.tasks.addTask(6, new EntityAIWatchClosest(this, EntityPlayer.class, 8.0F));
        this.tasks.addTask(7, new EntityAILookIdle(this));
        this.targetTasks.addTask(1, new EntityAIHurtByTarget(this, true));
        //this.targetTasks.addTask(3, new EntityAINearestAttackableTarget(this, EntityPlayer.class, 0, true));
        this.targetTasks.addTask(2, new EntityAINearestAttackableTarget(this, EntityVillager.class, 0, false));
        this.targetTasks.addTask(2, new EntityAINearestAttackableTarget(this, EntityCow.class, 0, false));
        this.targetTasks.addTask(3, new EntityAINearestAttackableTarget(this, EntityPlayer.class, 0, true)); 
    }

    protected void applyEntityAttributes()
    {
        super.applyEntityAttributes();
        this.getEntityAttribute(SharedMonsterAttributes.followRange).setAttribute(18.0D);
        this.getEntityAttribute(SharedMonsterAttributes.movementSpeed).setAttribute(0.44000700417232513D);
        this.getEntityAttribute(SharedMonsterAttributes.attackDamage).setAttribute(4.0D);
        this.getAttributeMap().func_111150_b(field_110186_bp).setAttribute(this.rand.nextDouble() * 0.10000000149011612D);
    }

    protected void entityInit()
    {
        super.entityInit();
        this.getDataWatcher().addObject(12, Byte.valueOf((byte)0));
        this.getDataWatcher().addObject(13, Byte.valueOf((byte)0));
        this.getDataWatcher().addObject(14, Byte.valueOf((byte)0));
    }

    /**
     * Returns the current armor value as determined by a call to InventoryPlayer.getTotalArmorValue
     */
    public int getTotalArmorValue()
    {
        int i = super.getTotalArmorValue() + 2;

        if (i > 20)
        {
            i = 20;
        }

        return i;
    }

    /**
     * Returns true if the newer Entity AI code should be run
     */
    protected boolean isAIEnabled()
    {
        return true;
    }
    
    @Override
    public boolean canAttackClass(Class par1Class)
    {
        return true;
    }


   
    @Override
    public void onLivingUpdate()
    {
    	
    	

        //EntityLiving.onLivingUpdate();
        super.onLivingUpdate();
    }
    
        
        public boolean attackEntityFrom(DamageSource par1DamageSource, float par2)
        {
            if (!super.attackEntityFrom(par1DamageSource, par2))
            {
                return false;
            }
            else
            {
                EntityLivingBase entitylivingbase = this.getAttackTarget();

                if (entitylivingbase == null && this.getEntityToAttack() instanceof EntityLivingBase)
                {
                    entitylivingbase = (EntityLivingBase)this.getEntityToAttack();
                }

                if (entitylivingbase == null && par1DamageSource.getEntity() instanceof EntityLivingBase)
                {
                    entitylivingbase = (EntityLivingBase)par1DamageSource.getEntity();
                }

                if (entitylivingbase != null && this.worldObj.difficultySetting >= 3 && (double)this.rand.nextFloat() < this.getEntityAttribute(field_110186_bp).getAttributeValue())
                {
                    int i = MathHelper.floor_double(this.posX);
                    int j = MathHelper.floor_double(this.posY);
                    int k = MathHelper.floor_double(this.posZ);
                    infected entityzombie = new infected(this.worldObj);

                    for (int l = 0; l < 50; ++l)
                    {
                        int i1 = i + MathHelper.getRandomIntegerInRange(this.rand, 7, 40) * MathHelper.getRandomIntegerInRange(this.rand, -1, 1);
                        int j1 = j + MathHelper.getRandomIntegerInRange(this.rand, 7, 40) * MathHelper.getRandomIntegerInRange(this.rand, -1, 1);
                        int k1 = k + MathHelper.getRandomIntegerInRange(this.rand, 7, 40) * MathHelper.getRandomIntegerInRange(this.rand, -1, 1);

                        if (this.worldObj.doesBlockHaveSolidTopSurface(i1, j1 - 1, k1) && this.worldObj.getBlockLightValue(i1, j1, k1) < 10)
                        {
                            entityzombie.setPosition((double)i1, (double)j1, (double)k1);

                            if (this.worldObj.checkNoEntityCollision(entityzombie.boundingBox) && this.worldObj.getCollidingBoundingBoxes(entityzombie, entityzombie.boundingBox).isEmpty() && !this.worldObj.isAnyLiquid(entityzombie.boundingBox))
                            {
                                this.worldObj.spawnEntityInWorld(entityzombie);
                                entityzombie.setAttackTarget(entitylivingbase);
                                entityzombie.onSpawnWithEgg((EntityLivingData)null);
                                this.getEntityAttribute(field_110186_bp).applyModifier(new AttributeModifier("Zombie reinforcement caller charge", -0.05000000074505806D, 0));
                                entityzombie.getEntityAttribute(field_110186_bp).applyModifier(new AttributeModifier("Zombie reinforcement callee charge", -0.05000000074505806D, 0));
                                break;
                            }
                        }
                    }
                }

                return true;
            }
        }

        /**
         * Called to update the entity's position/logic.
         */
        public void onUpdate()
        {
            if (!this.worldObj.isRemote && this.isConverting())
            {
                int i = this.getConversionTimeBoost();
                this.conversionTime -= i;

                if (this.conversionTime <= 0)
                {
                    this.convertToVillager();
                }
            }

            super.onUpdate();
        }

        public boolean attackEntityAsMob(Entity par1Entity)
        {
            boolean flag = super.attackEntityAsMob(par1Entity);

            if (flag && this.getHeldItem() == null && this.isBurning() && this.rand.nextFloat() < (float)this.worldObj.difficultySetting * 0.3F)
            {
                par1Entity.setFire(2 * this.worldObj.difficultySetting);
            }

            return flag;
        }

        /**
         * Returns the sound this mob makes while it's alive.
         */
        protected String getLivingSound()
        {
            return "mob.zombie.say";
        }

        /**
         * Returns the sound this mob makes when it is hurt.
         */
        protected String getHurtSound()
        {
            return "mob.zombie.hurt";
        }

        /**
         * Returns the sound this mob makes on death.
         */
        protected String getDeathSound()
        {
            return "mob.zombie.death";
        }

        /**
         * Plays step sound at given x, y, z for the entity
         */
        protected void playStepSound(int par1, int par2, int par3, int par4)
        {
            this.playSound("mob.zombie.step", 0.15F, 1.0F);
        }

        /**
         * Returns the item ID for the item the mob drops on death.
         */
        protected int getDropItemId()
        {
            return Item.rottenFlesh.itemID;
        }

        /**
         * Get this Entity's EnumCreatureAttribute
         */
        public EnumCreatureAttribute getCreatureAttribute()
        {
            return EnumCreatureAttribute.UNDEAD;
        }

        protected void dropRareDrop(int par1)
        {
            switch (this.rand.nextInt(3))
            {
                case 0:
                    this.dropItem(Item.ingotIron.itemID, 1);
                    break;
                case 1:
                    this.dropItem(Item.carrot.itemID, 1);
                    break;
                case 2:
                    this.dropItem(Item.potato.itemID, 1);
            }
        }

        /**
         * Makes entity wear random armor based on difficulty
         */
        protected void addRandomArmor()
        {
            super.addRandomArmor();

            if (this.rand.nextFloat() < (this.worldObj.difficultySetting == 3 ? 0.05F : 0.01F))
            {
                int i = this.rand.nextInt(3);

                if (i == 0)
                {
                    this.setCurrentItemOrArmor(0, new ItemStack(Item.swordIron));
                }
                else
                {
                    this.setCurrentItemOrArmor(0, new ItemStack(Item.shovelIron));
                }
            }
        }

        /**
         * (abstract) Protected helper method to write subclass entity data to NBT.
         */
        public void writeEntityToNBT(NBTTagCompound par1NBTTagCompound)
        {
            super.writeEntityToNBT(par1NBTTagCompound);
            /*
            if (this.isChild())
            {
                par1NBTTagCompound.setBoolean("IsBaby", true);
            }

            if (this.isVillager())
            {
                par1NBTTagCompound.setBoolean("IsVillager", true);
            }

            par1NBTTagCompound.setInteger("ConversionTime", this.isConverting() ? this.conversionTime : -1);
           */
        }

        /**
         * (abstract) Protected helper method to read subclass entity data from NBT.
         */
        public void readEntityFromNBT(NBTTagCompound par1NBTTagCompound)
        {
            super.readEntityFromNBT(par1NBTTagCompound);
            /*
            if (par1NBTTagCompound.getBoolean("IsBaby"))
            {
                this.setChild(true);
            }

            if (par1NBTTagCompound.getBoolean("IsVillager"))
            {
                this.setVillager(true);
            }

            if (par1NBTTagCompound.hasKey("ConversionTime") && par1NBTTagCompound.getInteger("ConversionTime") > -1)
            {
                this.startConversion(par1NBTTagCompound.getInteger("ConversionTime"));
            }
            */
        }

        /**
         * This method gets called when the entity kills another one.
         */
        public void onKillEntity(EntityLivingBase par1EntityLivingBase)
        {
            super.onKillEntity(par1EntityLivingBase);

            if (this.worldObj.difficultySetting >= 2 && par1EntityLivingBase instanceof EntityVillager)
            {
                if (this.worldObj.difficultySetting == 2 && this.rand.nextBoolean())
                {
                    return;
                }

                infected entityzombie = new infected(this.worldObj);
                entityzombie.copyLocationAndAnglesFrom(par1EntityLivingBase);
                this.worldObj.removeEntity(par1EntityLivingBase);
                entityzombie.onSpawnWithEgg((EntityLivingData)null);
                //entityzombie.setVillager(true);

                //if (par1EntityLivingBase.isChild())
               // {
                   // entityzombie.setChild(true);
               // }

                this.worldObj.spawnEntityInWorld(entityzombie);
                this.worldObj.playAuxSFXAtEntity((EntityPlayer)null, 1016, (int)this.posX, (int)this.posY, (int)this.posZ, 0);
            }
        }

        public EntityLivingData onSpawnWithEgg(EntityLivingData par1EntityLivingData)
        {
            Object par1EntityLivingData1 = super.onSpawnWithEgg(par1EntityLivingData);
            float f = this.worldObj.getLocationTensionFactor(this.posX, this.posY, this.posZ);
            this.setCanPickUpLoot(true);
            
            if (par1EntityLivingData1 == null)
            {
                par1EntityLivingData1 = new infectedGroupData(this, this.worldObj.rand.nextFloat() < 0.05F, this.worldObj.rand.nextFloat() < 0.05F, (infectedINNER1)null);
            }

            if (par1EntityLivingData1 instanceof infectedGroupData)
            {
            	infectedGroupData entityzombiegroupdata = (infectedGroupData)par1EntityLivingData1;

                /*if (entityzombiegroupdata.field_142046_b)
                {
                    this.setVillager(true);
                }

                if (entityzombiegroupdata.field_142048_a)
                {
                    this.setChild(true);
                }
                */
            }
            

            this.addRandomArmor();
            this.enchantEquipment();

            if (this.getCurrentItemOrArmor(4) == null)
            {
                Calendar calendar = this.worldObj.getCurrentDate();

                if (calendar.get(2) + 1 == 10 && calendar.get(5) == 31 && this.rand.nextFloat() < 0.25F)
                {
                    this.setCurrentItemOrArmor(4, new ItemStack(this.rand.nextFloat() < 0.1F ? Block.pumpkinLantern : Block.pumpkin));
                    this.equipmentDropChances[4] = 0.0F;
                }
            }

            this.getEntityAttribute(SharedMonsterAttributes.knockbackResistance).applyModifier(new AttributeModifier("Random spawn bonus", this.rand.nextDouble() * 0.05000000074505806D, 0));
            this.getEntityAttribute(SharedMonsterAttributes.followRange).applyModifier(new AttributeModifier("Random zombie-spawn bonus", this.rand.nextDouble() * 1.5D, 2));

            if (this.rand.nextFloat() < f * 0.05F)
            {
                this.getEntityAttribute(field_110186_bp).applyModifier(new AttributeModifier("Leader zombie bonus", this.rand.nextDouble() * 0.25D + 0.5D, 0));
                this.getEntityAttribute(SharedMonsterAttributes.maxHealth).applyModifier(new AttributeModifier("Leader zombie bonus", this.rand.nextDouble() * 3.0D + 1.0D, 2));
            }

            return (EntityLivingData)par1EntityLivingData1;
        }

        /**
         * Called when a player interacts with a mob. e.g. gets milk from a cow, gets into the saddle on a pig.
         */
        public boolean interact(EntityPlayer par1EntityPlayer)
        {
            ItemStack itemstack = par1EntityPlayer.getCurrentEquippedItem();
            /* no converting them
            if (itemstack != null && itemstack.getItem() == Item.appleGold && itemstack.getItemDamage() == 0  && this.isPotionActive(Potion.weakness))
            {
                if (!par1EntityPlayer.capabilities.isCreativeMode)
                {
                    --itemstack.stackSize;
                }

                if (itemstack.stackSize <= 0)
                {
                    par1EntityPlayer.inventory.setInventorySlotContents(par1EntityPlayer.inventory.currentItem, (ItemStack)null);
                }

                if (!this.worldObj.isRemote)
                {
                    this.startConversion(this.rand.nextInt(2401) + 3600);
                }

                return true;
            }
            else
            {
                return false;
            }*/
            return false;
        }

        /**
         * Starts converting this zombie into a villager. The zombie converts into a villager after the specified time in
         * ticks.
         */
        protected void startConversion(int par1)
        {
            this.conversionTime = par1;
            this.getDataWatcher().updateObject(14, Byte.valueOf((byte)1));
            this.removePotionEffect(Potion.weakness.id);
            this.addPotionEffect(new PotionEffect(Potion.damageBoost.id, par1, Math.min(this.worldObj.difficultySetting - 1, 0)));
            this.worldObj.setEntityState(this, (byte)16);
        }

        @SideOnly(Side.CLIENT)
        public void handleHealthUpdate(byte par1)
        {
            if (par1 == 16)
            {
                this.worldObj.playSound(this.posX + 0.5D, this.posY + 0.5D, this.posZ + 0.5D, "mob.zombie.remedy", 1.0F + this.rand.nextFloat(), this.rand.nextFloat() * 0.7F + 0.3F, false);
            }
            else
            {
                super.handleHealthUpdate(par1);
            }
        }

        /**
         * Determines if an entity can be despawned, used on idle far away entities
         */
        protected boolean canDespawn()
        {
            return !this.isConverting();
        }

        /**
         * Returns whether this zombie is in the process of converting to a villager
         */
        public boolean isConverting()
        {
            return false;//this.getDataWatcher().getWatchableObjectByte(14) == 1;
        }

        /**
         * Convert this zombie into a villager.
         */
        protected void convertToVillager()
        {
            EntityVillager entityvillager = new EntityVillager(this.worldObj);
            entityvillager.copyLocationAndAnglesFrom(this);
            entityvillager.onSpawnWithEgg((EntityLivingData)null);
            entityvillager.func_82187_q();

            if (this.isChild())
            {
                entityvillager.setGrowingAge(-24000);
            }

            this.worldObj.removeEntity(this);
            this.worldObj.spawnEntityInWorld(entityvillager);
            entityvillager.addPotionEffect(new PotionEffect(Potion.confusion.id, 200, 0));
            this.worldObj.playAuxSFXAtEntity((EntityPlayer)null, 1017, (int)this.posX, (int)this.posY, (int)this.posZ, 0);
        }

        /**
         * Return the amount of time decremented from conversionTime every tick.
         */
        protected int getConversionTimeBoost()
        {
            int i = 1;

            if (this.rand.nextFloat() < 0.01F)
            {
                int j = 0;

                for (int k = (int)this.posX - 4; k < (int)this.posX + 4 && j < 14; ++k)
                {
                    for (int l = (int)this.posY - 4; l < (int)this.posY + 4 && j < 14; ++l)
                    {
                        for (int i1 = (int)this.posZ - 4; i1 < (int)this.posZ + 4 && j < 14; ++i1)
                        {
                            int j1 = this.worldObj.getBlockId(k, l, i1);

                            if (j1 == Block.fenceIron.blockID || j1 == Block.bed.blockID)
                            {
                                if (this.rand.nextFloat() < 0.3F)
                                {
                                    ++i;
                                }

                                ++j;
                            }
                        }
                    }
                }
            }

            return i;
        }
        
        @Override
        protected Entity findPlayerToAttack()
        {
            EntityPlayer entityplayer = this.worldObj.getClosestVulnerablePlayerToEntity(this, 8.0D);
            return entityplayer != null && this.canEntityBeSeen(entityplayer) ? entityplayer : null;
        }

}

Quote

November 18, 201311 yr

You need to return true to "using the new AI" method flag.

Quote

November 20, 201311 yr

Author

do you mean this function?

@Override
    protected boolean isAIEnabled()
    {
        return true;
    }

or a different one? I tried this and it didn't work. still won't attack cows.

I've noticed that they will only attack villagers and the player, and won't attack spiders, creepers, zombies, themselves, etc. I haven't tried EVERY mob, but that ones I have tried its all the same.

Also, if you do have the ai targetting a mob, and its a higher priority than villager/player, it will be docile. If you put its priority above the HurtByTarget AI task, it basically becomes passive (but doesn't panic).

Quote

November 20, 201311 yr

I have played around with this concept a bit recently and figured out, for it to attack a mob you have to have BOTH the collision task and the attackable task

so you have to have both these:

this.tasks.addTask(2, new EntityAIAttackOnCollide(this, EntityCow.class, 1.0D, true));
this.targetTasks.addTask(2, new EntityAINearestAttackableTarget(this, EntityCow.class, 0, false));

try that, i imagine that is you problem.

Quote

November 20, 201311 yr

Author

This was it exactly, thank you very much!

Quote

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Failure to Launch with 1.21.10-60.0.6 Linux server, Java 21.

OK, got a similar warning as above with .5 but FallingTree is working fine. I'm not sure if it's a FallingTree or Forge issue.

By Richy_T · 45 minutes ago45 min
Failure to Launch with 1.21.10-60.0.6 Linux server, Java 21.

Thanks. May still be issues.

[19:51:42] [main/WARN] [ne.mi.co.ForgeHooks/WP]: The following mods have version differences that were not resolved:
forge (version 59.0.1 -> 1.21.10-60.0.7)
Things may not work well.

Also had trouble running FallingTree mod but currently verifying that's not a me thing.

Yep, not a me thing.

[19:54:52] [main/ERROR] [ne.mi.fm.lo.ModSorter/LOADING]: Missing or unsupported
mandatory dependencies: Mod ID: 'forge', Requested by: 'fallingtree', Expected range: '[60,)', A
ctual version: '1.21.10-60.0.7'

Going to see how .5 does.

By Richy_T · 53 minutes ago53 min
Failure to Launch with 1.21.10-60.0.6 Linux server, Java 21.

I've fixed this in Forge 60.0.7. Please update. Thank you!

By Jonathing · 1 hour ago1 hr
Failure to Launch with 1.21.10-60.0.6 Linux server, Java 21.

Was upgrading from 1.21.9. Failed with an error. Reinstalled 1.21.9, good. Installed 1.21.10-60.0.5, also good.

Error is

[17:35:50] [main/ERROR] [ne.mi.fm.lo.mo.ModDiscoverer/SCAN]: Locator net.minecra
ftforge.fml.loading.moddiscovery.ClasspathLocator@7dc51783 found an invalid mod
file net.minecraftforge.fml.loading.moddiscovery.ModFileInfo@4b61d0c6
net.minecraftforge.fml.loading.moddiscovery.InvalidModFileException: Illegal version number specified ${forge_version} (forge-1.21.10-60.0.6-universal.jar)

I can add more info if needed but I'm guessing this was just a whoops.

By Richy_T · Posted 3 hours ago3 hr
FTBQuests quests not showing in server

Most likely, this is no longer relevant for you, but I will still leave my answer, because I had the same problem, and I did not find a clear answer anywhere. To ensure your server players have the quests you created, all you need to do is transfer the necessary files to the server. Players don't need to install anything on their end, except for mod. You need to find .minecraft>config>ftbquests>quests. In quests should be folder and two files. So all you need to do is use existing ones or create folders config>ftbquests>quests, and copy the contents of the quests folder.

By Komagiri · Wednesday at 08:24 PM4 days

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Entity AI: Getting Custom Mob to attack vanilla creatures

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Failure to Launch with 1.21.10-60.0.6 Linux server, Java 21.

Failure to Launch with 1.21.10-60.0.6 Linux server, Java 21.

Failure to Launch with 1.21.10-60.0.6 Linux server, Java 21.

Failure to Launch with 1.21.10-60.0.6 Linux server, Java 21.

FTBQuests quests not showing in server

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