Rocket slightly wrong trajectory

Question

Hello Everyone,

I have a tank that can shoot rockets, except the rockets always faced one direction. So I added a script that makes the rockets' trajectory almost correct. Except the rockets always have a propensity to move along the Global Z-axis instead of the tank's z axis. It is not rare enough to be acceptable. How do I correct this issue?

Here's the script I attached to my rocket prefab:

 function Update(){
     var r = Quaternion.LookRotation(-rigidbody.velocity);
     transform.rotation = r;
 }

I have "-rigidbody.velocity" because otherwise the rockets are shot backwards...

My shooting code attached to the tank is:

 var projectile=Instantiate(RPG, transform.FindChild("CannonPoint").transform.position, Quaternion.identity);
         
         
         projectile.gameObject.tag="projectile";
         projectile.rigidbody.AddRelativeForce(transform.forward*4000);

I appreciate your help. -Hyperion

Answer 1

Best Answer

Answer by Hyperion · Aug 03, 2013 at 02:12 AM

OH SORRY!!! I found the problem. My "Cannon Point" had a collider and that caused all the trouble... Thanks for answering anyway.

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Answer 2

Answer by robertbu · Aug 03, 2013 at 02:10 AM

You want AddForce() not AddRelativeForce().

 projectile.rigidbody.AddForce(transform.forward*4000);

The vector 'transform.forward' is already a world coordinate, not a local coordinate, so you don't need to use 'relative'.

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Hyperion · Aug 03, 2013 at 02:14 AM 0

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Thank you, I guess I didn't need to put in relative. It cleaned up my code a little.

Rocket slightly wrong trajectory

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