Bullet reflect not working properly

Question

I'm trying to have a bullet projectile using raycast as collider to bounce off certain reflective objects. From what I can tell, it doesn't seem to mainly reflect based on where the bullet hits the object, but based on the reflective object's rotation. If the reflective object's rotation is 0, then no matter where the bullet hits it from, it will reverse its speed like it's hitting the object straight on.

I'm assuming the code I have does not take the rotation of both bullet and object into account. What can I change to make this work? Thanks in advance.

Code below here:

using UnityEngine; public class BulletBounce : MonoBehaviour { public float time; public float speed;

 private Vector3 direction;

 void Awake()
 {
     direction = Vector3.forward;
 }

 void FixedUpdate()
 {
     RaycastHit hit;
     if (Physics.Raycast(transform.position, transform.TransformDirection(direction), out hit, speed))
     {
         if (hit.transform.tag != "Player" && hit.transform.tag != "IgnoreBullet")
         {

             if (hit.transform.tag == "Reflect")
             {
                 direction = Vector3.Reflect(direction, hit.normal);
                 transform.position = hit.point;
                 transform.rotation.SetFromToRotation(Vector3.forward, direction);
                 return;
             }
         }
     }
     transform.Translate(direction * speed);
 }

}

Answer 1

Best Answer

Answer by Namey5 · Aug 26, 2019 at 03:35 AM

transform.Translate works in object space, but your direction is in world space. Replace the last line with this;

 transform.position += direction * speed;

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AyeEmTeeBee131 · Aug 26, 2019 at 05:27 PM 0

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By doing that, it seems that the bullet's movement does not take it's own rotation into account, as it only initially moves forward on the world z-axis. Is there a potential way to have it both move on it's own z-axis while being able to reflect off of objects?

Namey5 AyeEmTeeBee131 · Aug 27, 2019 at 01:56 AM 0

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Sorry, didn't realise you also initialised it to a local space direction. In your awake function, replace the line with this;

 direction = transform.forward;

It should start in the right direction now.

AyeEmTeeBee131 Namey5 · Aug 27, 2019 at 06:16 PM 0

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After changing the line "if (Physics.Raycast(transform.position, transform.TransformDirection(direction), out hit, speed))" to "if (Physics.Raycast(transform.position, transform.TransformDirection(Vector3.forward), out hit, speed))", I think I've got it working for now.

$$anonymous$$any thanks for your help!

Bullet reflect not working properly

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