Shooting bullet

So, I'm trying to do a simple shooting thing. All I need it to do is send a sphere forward from the camera at left click. I have the bullet and the target both set as rigid bodies with gravity and angular drag off. Here's the script for the bullet:

Code (csharp):

1. var isActive:boolean = false;
2. var playerT:Transform;
3.  
4. function Update () {
5.     getInput();
6.    
7.     if(isActive) {
8.         transform.position += transform.forward * 10;
9.     }
10. }
11.  
12. function getInput() {
13.     if(Input.GetButton("Fire1")) {
14.         transform.forward = playerT.forward;
15.         transform.position = playerT.position;
16.         isActive = true;
17.     }
18. }
19.  
20. function OnCollisionEnter(other : Collision) {
21.     print("This collider is named: " + other.contacts[0].otherCollider.name);
22. }

playerT is the transform from the MainCamera. The problem is that after the first collision if I fire the bullet again its forward vector starts to change mid-flight. It starts correct, but then it will start curving. Sometimes it's so extreme the bullet corkscrews down the range. I'm thinking there is something about rigid bodies that I don't know about, because it didn't do this before I made the bullet a rigid body. Thanks.

 

I think that you have to apply a forward force instead of translate. Try something like this:

Code (csharp):

1.  
2. var explosionPower: float = 2000.0;
3. //bullet.rigidbody.AddForce(transform.forward * explosionPower);
4. rigidbody.AddForce(transform.forward * explosionPower);
5.  

instead of

Code (csharp):

1.  
2. transform.position += transform.forward * 10;
3.  

 

That didn't do it. But I fixed it another way. I just reset the location of the bullet to the camera's location and set isActive to false on collision. Not exactly sure what happened, it's kind of a dead rat, but whatever. Thanks anyways.

 

Ok, more issues I could use some help with.

Script is attached to bullet object. I have a field variable called muzzleVel, it's a float with value 2820.

I move the bullet via this line:
transform.position -= transform.forward * (muzzleVel * Time.deltaTime);

The issue I'm having is that changing the value of muzzleVel doesn't do anything. I can't imagine why this would be, there must be something I'm missing. I'll post the whole script below for reference. Thanks.

Code (csharp):

1. var timeDilation:float = 0.33;
2.  
3. var isActive:boolean = false;
4. var playerT:Transform;
5. var hitMarkerObj:GameObject;
6.  
7. var bulletCam:GameObject;
8. var mainCam:GameObject;
9.  
10. var muzzleVel:float = 2820; //fps
11. var flightDistance:float = 0.0;
12. var RPS:float = 0.0;
13. var twist:float = 10.0;
14.  
15. function Start() {
16.     bulletCam.active = false;
17. }
18.  
19. function Update () {
20.     getInput();
21.    
22.     if(isActive) {
23.         transform.position -= transform.forward * (muzzleVel * Time.deltaTime);
24.         flightDistance += (muzzleVel * Time.deltaTime);
25.         transform.Rotate(0, 0, (360*(RPS*Time.deltaTime)));
26.         bulletCam.active = true;
27.         mainCam.active = false;
28.         bulletCam.transform.position = transform.position - Vector3(1, 0, 1);
29.         bulletCam.transform.rotation.y = 0;
30.         bulletCam.transform.Rotate(0, 45, 0);
31.         if(flightDistance > 3500) {
32.             isActive = false;
33.             transform.position = playerT.position;
34.         }
35.     } else {
36.         bulletCam.active = false;
37.         mainCam.active = true;
38.     }
39. }
40.  
41. function getInput() {
42.     if(Input.GetButton("Fire1")) {
43.         transform.forward = -playerT.forward;
44.         transform.position = playerT.position;
45.         isActive = true;
46.         flightDistance = 0;
47.         RPS = (12/twist)*muzzleVel;
48.     }
49. }
50.  
51. function OnCollisionEnter(other : Collision) {
52.     print("This collider is named: " + other.contacts[0].otherCollider.name);
53.     var hitMarkerGO:GameObject = Instantiate(hitMarkerObj, other.contacts[0].point, Quaternion.AngleAxis(180, Vector3.up));
54.     hitMarkerGO.transform.position.z -= 20;
55.     transform.position = playerT.position;
56.     isActive = false;
57. }