Arrows And Enchantments

So were all awrare or enchanted bows and they shoot cool arrows. What I want to know is how does the arrow hold the enchantment data? Is it a pre-defined metadata value? Or is it something else?

Reason I ask is because I want to add in an enchantment after an arrow is shot via the launchProjectile function. The function returns an arrow that you can manipulate, and I want to know if there is an easy way to add enchantments to it.

 

well, what is it that you want?
you can't add enchantments to non enchantable items with bukki(as far as i know)

 

I want to use the launchprojectile(arrow.class), and use that returned arrow, but put the enchantment effects, if any that were on the user's bow in hand onto that arrow.

So lets say you're holding a flame aspect bow. You shoot, plugin cancels event, then does a launchprojectile(arrow.class) - how do I get that arrow I launched in to have that flame aspect on it?

 

So you want infinate arrows with the enchantments from the bow? If so, just add an arrow every time they shoot.

 

Edit: so in other words, how to Arrows carry the enchantment normally, after a bow shoots, it must get passed on somehow? If I know this then maybe I can implement the same thing with the LaunchProjectile function.

 

What exactly are you trying to accomplish? Same as shooting a bow or infinite arrows?

 

Any enchantment.. that includes infinite arrows, or power, or flame, or punch, etc.

So any enchantment, just like a regular bow, which is what i am getting at. How does a regular enchantment bow (not just infinite) pass its enchantments onto its arrows shot?

 

RingOfStorms http://jd.bukkit.org/doxygen/df/dcf...wEvent.html#a2938845cbe81524594d48881eec12992 You should be able to use that and event.getBow().getEnchantments() then somehow add them to the arrow on ProjectileHitEvent.

 

Well that's why I am here, I don't know how to add them onto the arrows. (Or can I apply these affects to a damage function or something bizarre that I haven't heard of once it hits a player?)

 

I'm not sure either.. You could use ProjectileHitEvent or EntityDamageEvent....

 

Yea but then how do you apply the damage enchants? That is the next problem (if we can't apply them to the arrow).

 

bump

 

when the arrows hit it probably traces back to the bow and see what enchants it has. but still don't get what you want to do...

 

For the fire enchantment, just ignite the arrow.
For the other enchantments, I think you will need to reference CraftBukkit and use NMS :/
Get the n.m.s.EntityArrow:

Code:java

net.minecraft.server.EntityArrow nmsArrow = ((CraftArrow)arrow).getHandle();

For the damage enchantment, you need to call nmsArrow.b(double) which is the equivalent of setDamage(). I don't know what the damage values should be. You can mess around with shooting arrows normally and seeing what damage value they have with nmsArrow.d() (which is the equivalent of getDamage()). For the knockback, call nmsArrow.a(int) (which is setKnockback()).

EDIT: By the way... I haven't tested this; it is just what I gathered from looking through the source. If it doesn't work, you can look through there and see where I went wrong.

 

The previous post hasn't seemed to get me far, I think I finally found something when I thought, why look at the confusing arrow class? So I looked at the bow, and sure enough it looks pretty self explanatory from it.
https://github.com/Bukkit/CraftBukkit/blob/master/src/main/java/net/minecraft/server/ItemBow.java