Slowing down a projectile

How do I slow down a snowball? Is it possible?
IDC if it is through valid code, potions, packets, or NMS. I just want a solution.

Thanks in advance!

 

I believe in order to do this you have to spawn and shoot the projectile entity yourself (bypassing the Bukkit API) completely. I'd love to know if this is not true.

The NMS "shoot" method takes a speed you can use if you go this route.

 

NathanWolf You can fire projectiles using bukkit API as well.
http://jd.bukkit.org/beta/apidocs/org/bukkit/World.html#spawn(org.bukkit.Location, java.lang.Class)

 

ProjectileLaunchEvent: event.getEntity().setVelocity(event.getEntity().getVelocity().multiply(-2)); ?

 

TheHandfish Vector multiplied by a negative number 'flips' the Vector . You would also run into issues with the gravity, causing your projectiles pretty much to fall from the sky.

 

I thought you had to apply the speed as part of the "shoot" method? I mean you can spawn a Projectile, but the speed is already set by the time you get the Entity back. Am I missing a spawn/launch method that takes a "speed" parameter?

 

NathanWolf as above, set vector? If you mean speed by making the projectile travel slower without changing its path, I don't think that's possible without vector math.

 

I do mean that- as the OP requested. And it is possible

 

My mistake, multiplying by 0.5 would work. -2 would simply reverse the direction and send it twice as fast.