C# Shooting a cannonball (ballistics)

Hey guys, I am working on a TowerDefense/ MOBA game . Currently I am dealing with an issue concerning my CannonTower. Please take a look at the screenshot I have uploaded (the link). As you can see the tower is supposed to shoot at the little mummy fellow.
I have tried several scripts and ways to make this happen. First I tried all transform.Translate commands I knew, much like the AddForce commands the result was not really what I had in mind. I then stumbled onto a thread in this forum concerning the issue written in (of course -.-) unity script. I tried to translate this script to c# - I had to leave out a part to make it work. The cannonball is moving the way I want it to fly, but as far as I understand the script was never really intended to "hit" the target. I tried to understand all the Mathf. functions - but well you know.. english.. math.. + beginner in coding = bad. It would be great if I could find a way to make the cannonball move exactly the way it is in this script ,BUT increase the entire flight accordingly. If the enemy is very close - the ball would have to fly only a little faster,however if the enemy is further away the ball would have to fly a lot faster.

This is the original unity script code :

function BallisticVel(target: Transform, angle: float): Vector3 {

var dir = target.position - transform.position; // get target direction var h = dir.y; // get height difference

     dir.y = 0;  // retain only the horizontal direction
 
     var dist = dir.magnitude ;  // get horizontal distance
 
     var a = angle * Mathf.Deg2Rad;  // convert angle to radians
 
     dir.y = dist * Mathf.Tan(a);  // set dir to the elevation angle
 
     dist += h / Mathf.Tan(a);  // correct for small height differences
 
     // calculate the velocity magnitude
     var vel = Mathf.Sqrt(dist * Physics.gravity.magnitude / Mathf.Sin(2 * a));
 
     return vel * dir.normalized;

}

    var myTarget: Transform;  // drag the target here

var cannonball: GameObject; // drag the cannonball prefab here var shootAngle: float = 30; // elevation angle

function Update(){ if (Input.GetKeyDown("b")){ // press b to shoot var ball: GameObject = Instantiate(cannonball, transform.position, Quaternion.identity); ball.rigidbody.velocity = BallisticVel(myTarget, shootAngle); Destroy(ball, 10); } }

I translated the code but had to leave out the "angle" part - because I couldn't make it work.

This is what I got:

GameObject ball = Instantiate(cannonballprefab,shootCannonPos,Quaternion.identity)as GameObject; ball.rigidbody.velocity = BallisticVel(enemyObject);

public Vector3 BallisticVel(Transform target){ Vector3 dir = target.position - mySelf.transform.position; float h = dir.y; dir.y =0; float dist = dir.magnitude; dir.y = dist; dist += h; float vel = Mathf.Sqrt(dist*Physics.gravity.magnitude); return vel*dir.normalized; }

Here is the LINK to the scene:

[IMG]http://i45.tinypic.com/10zz4nl.png[/IMG]

in case that link won't work :

http://i45.tinypic.com/10zz4nl.png

All this colliding,exploding,health stuff shouldn't be an issue..just that fly with a curve - and actually hit the damn target is ;)

Thanks guys!