How Do You Make TNT Fire Straight?

Hi!
How would I make TNTPrimed.class fire in the direction of a player when they fire a bow. I understand how to make it spawn the TNT at this time but how would I make the TNT fire forwards and not upwards when I change the velocity?

Thanks in advance!
~Ben

 

Apply a vector to it?

 

get the normalized direction the player is looking at

Code:java

Vector direction = player.getLocation().getDirection().normalize();

and multiply by a big number

Code:java

Vector v = direction.multiply(1000);

Now apply that:

Code:java

primed_tnt_instance.setVelocity(v);

And it will go directly in front of you (with the speed of light tho...)

 

Ok thanks! But why normalise it?

 

to get the unit vector (otherwise you can end up with totally different vectors for each run)

 

Ok, thanks for your help!!!