Hi Everyone,

 

So I have been developing a system where I have items that launch projectiles. I want these items to work for both the player and mobs. They work perfectly fine for the player atm but for the mob the projectiles are launched at the incorrect lookvector. I noticed that the client and server values for the look vector are not in sync. How does minecraft sync them up?

So it seems that for mobs the throwable heading is incorrect if you calculate it the way that EntityThrowable calculates it. The way around this was to instead use the entitites look vector.x (y and z) coordinates inside the setThrowableHeading method  to calculate the correct heading after you create an instance of your EntityThrowable.

 

EntityRangedAttackBase distanceAttack = new EntityRangedAttack(world, entityUsingAttackItem).setType(attackType).setAreaOfEffectRadius(damageRadius);
      				distanceAttack.setBaseDamageForProjectileAttack(baseDmg);
      				distanceAttack.setThrowableHeading(entityUsingAttackItem.getLookVec().xCoord, entityUsingAttackItem.getLookVec().yCoord + 0.1, entityUsingAttackItem.getLookVec().zCoord, 1.5F, 1.0F);