My custom tamed entity will attempt to attack a player but it will deal 0 damage. Why does this happen?

I think you should add this to entity constructor:

 

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

 

And to set damage use this:

protected void applyEntityAttributes()
    {
        super.applyEntityAttributes();
        this.getEntityAttribute(SharedMonsterAttributes.attackDamage).setBaseValue(3.0D);
    }

It didn't have any effect... I am not sure what is causing it.

Is there a way to prevent the mob attacking players in the first place because I don't really want them to?

What mob must do?

I want my custom entity to never even try to attack the player, if you know what I mean.

So remove the player attack task?

The problem is that I have just got 3 target tasks that will make i attack whatever attacks it, its owner or whatever the owner attacks. I want it to be so that if the entity is a player don't try to attack. That is all the AI I have:

        this.tasks.addTask(1, new EntityAISwimming(this));
        this.tasks.addTask(2, this.aiSit);
        this.tasks.addTask(3, new EntityAIAttackOnCollide(this, 1.0D, false));
        this.tasks.addTask(4, new EntityAIFollowOwner(this, 1.0D, 6.0F, 3.0F));
        this.tasks.addTask(5, new EntityAIWander(this, 1.0D));
        this.tasks.addTask(6, new EntityAIWatchClosest(this, EntityPlayer.class, 8.0F));
        this.tasks.addTask(6, new EntityAILookIdle(this));
        this.targetTasks.addTask(1, new EntityAIHurtByTarget(this, true));
        this.targetTasks.addTask(2, new EntityAIOwnerHurtByTarget(this));
        this.targetTasks.addTask(3, new EntityAIOwnerHurtTarget(this));

It isn't hard to make a custom AI class.  Just copy the one that is closest and change what you need and add it to the list instead.

Why don't you just look up how wolves are working?!

It will save you much time.

Well I tried using this in the attackEntityAsMob() method but it has no affect:

 

if(par1Entity instanceof EntityPlayer) {

 

return false;

 

}

In the attackEntityAsMob() method, if it returns true does that mean it will attack that target or it will deal damage to the set target?