Hi, so I've just added an enchantment to my mod that is supposed to not anger endermen when you put an  helmet on with that enchantment. I was wondering if there was a sort of EntityAggravatedEvent of some sort, that I can cancel when an enderman gets angry at a player with that enchantment. Thanks!

8 minutes ago, StefanDeSterke said:

Hi, so I've just added an enchantment to my mod that is supposed to not anger endermen when you put an  helmet on with that enchantment. I was wondering if there was a sort of EntityAggravatedEvent of some sort, that I can cancel when an enderman gets angry at a player with that enchantment. Thanks!

You may see all the events with checking Event class implementations in your IDE.

3 minutes ago, Dzuchun said:

You may see all the events with checking Event class implementations in your IDE.

Done that, but still couldn't find any event that matches what I'm looking for :(.

 

I also looked into the enderman entity class itself, and it seems that 'itemstack.isEnderMask(PlayerEntity, EndermanEntity)' controls wether an item is considered a mask from endermen. Any way I can override this and add my enchantment?

2 minutes ago, diesieben07 said:

There isn't currently any generic hook. You'd have to override the enderman's AI tasks that call this method.

The code for when endermen get angry is here in the EndermanEntity class:

   /**
    * Checks to see if this enderman should be attacking this player
    */
   private boolean shouldAttackPlayer(PlayerEntity player) {
      ItemStack itemstack = player.inventory.armorInventory.get(3);
      if (itemstack.isEnderMask(player, this)) {
         return false;
      } else {
         Vector3d vector3d = player.getLook(1.0F).normalize();
         Vector3d vector3d1 = new Vector3d(this.getPosX() - player.getPosX(), this.getPosYEye() - player.getPosYEye(), this.getPosZ() - player.getPosZ());
         double d0 = vector3d1.length();
         vector3d1 = vector3d1.normalize();
         double d1 = vector3d.dotProduct(vector3d1);
         return d1 > 1.0D - 0.025D / d0 ? player.canEntityBeSeen(this) : false;
      }
   }

 

This method is not called in the enderman's AI tasks, but in it's tick method.

 

      public void tick() {
         if (this.enderman.getAttackTarget() == null) {
            super.func_234054_a_((LivingEntity)null);
         }

         if (this.player != null) {
            if (--this.aggroTime <= 0) {
               this.nearestTarget = this.player;
               this.player = null;
               super.startExecuting();
            }
         } else {
            if (this.nearestTarget != null && !this.enderman.isPassenger()) {
               if (this.enderman.shouldAttackPlayer((PlayerEntity)this.nearestTarget)) {    //It's called here
                  if (this.nearestTarget.getDistanceSq(this.enderman) < 16.0D) {
                     this.enderman.teleportRandomly();
                  }

                  this.teleportTime = 0;
               } else if (this.nearestTarget.getDistanceSq(this.enderman) > 256.0D && this.teleportTime++ >= 30 && this.enderman.teleportToEntity(this.nearestTarget)) {
                  this.teleportTime = 0;
               }
            }

            super.tick();
         }

      }

 

The only problem is, I don't know how to override a vanilla minecraft class.

3 minutes ago, diesieben07 said:

The methods you quoted (please don't just post entire Minecraft code, we can see it in our IDE) are in the AI classes. The tick method you quoted is in EndermanEntity.FindPlayerGoal, which has two more references to the isEnderMask method.

Then there is another one in EndermanEntity.StareGoal.

 

Woops I didn't see that it was in that class. But nonetheless, I don't really know where to override the AI of an entity.

5 hours ago, diesieben07 said:

Subscribe to EntityJoinWorldEvent, check if the entity joining is the one you want to change. If so, call GoalSelector#removeGoal on the goalSelector resp. targetSelector of the entity.

Thanks! It works