Trying to get a prefab to disappear when firing a gun - C#

Hello all! This is what I am trying to achieve:

The player is holding a pistol. When the player fires the gun, I want the bullet to disappear for 2 seconds and then reappear, ready for the next shot. Like an Russian RPG in certain games.

On the gun gameobject, there is a separate bullet prefab that is a child of the gun gameobject. I thought about using blender to make an animation that would hide the bullet but I went with scripting instead because I thought it would be easier.

Here is the script that is attached to Controller (right): Pastebin.

I don't have a strong background in C# so any help and critiques are welcome. Thanks!

 

You can use coroutine (a lot more easyer for timer things)

(not sure about the syntax you can have some syntax errors )

Code (csharp):

1.  
2. using UnityEngine;
3. using System.Collections;
4.  
5. public class ControllerManager : MonoBehaviour {
6.  
7.     public Rigidbody BulletPrefab;
8.     public Transform BarrelEnd;
9.     public float MyForce;
10.     public float timer;
11.     public GameObject PlayerBullet;
12.     Animation otherAnimator;
13.  
14.     private Valve.VR.EVRButtonId triggerButton = Valve.VR.EVRButtonId.k_EButton_SteamVR_Trigger;
15.     private SteamVR_TrackedObject trackedObject;
16.     private SteamVR_Controller.Device device;
17.  
18.     void Start () {
19.         trackedObject = GetComponent<SteamVR_TrackedObject> ();
20.         timer = 0;
21.     }
22.  
23.     void Update () {
24.    
25.  
26.    
27.         if(device.GetPressDown(triggerButton))
28.         {
29.            StartCoroutine(TimerShowBullet());
30.         }
31.     }
32.  
33.     IEnumerator TimerShowBullet()
34.     {
35.      device = SteamVR_Controller.Input ((int)trackedObject.index);
36.        yield return new WaitForSeconds(2);
37.         device.TriggerHapticPulse (700);
38.         otherAnimator = PlayerBullet.GetComponent<Animation> ();
39.         Rigidbody bulletInstance;
40.         bulletInstance = Instantiate (BulletPrefab, BarrelEnd.position, BarrelEnd.rotation) as Rigidbody;
41.         bulletInstance.AddForce (BarrelEnd.forward * MyForce);
42.     }
43. }
44.  
45.  

 

What do you mean by "dissapear and reappear" ?

 

Sorry, I should have elaborated. I would like to turn the mesh renderer off for two seconds and turn it back on again.

 

Why don't you create a simple behaviour script that does this specific task and attach it to your bullet prefab?

Code (csharp):

1. using UnityEngine;
2.  
3. public class BulletHideBehaviour : MonoBehaviour
4. {
5.    [SerializeField]
6.    private float disappearTime;//the amount of time the renderer is disabled
7.    private float appearTime;//the time when the bullet should re-appear
8.    private MeshRenderer meshRenderer;
9.  
10.    void Start()
11.    {
12.      this.meshRenderer = this.GetComponent<MeshRenderer>();
13.      if (this.meshRenderer == null)
14.      {
15.        throw new UnityException("Missing MeshRenderer! BulletHideBehaviour requires a MeshRenderer component to function correctly.");
16.      }
17.      this.meshRenderer.enabled = false;
18.      this.appearTime = Time.time + this.disappearTime;
19.    }
20.  
21.    void Update()
22.    {
23.      if (Time.time >= this.appearTime && this.meshRenderer != null)
24.      {
25.        this.meshRenderer.enabled = true;
26.        this.enabled = false;
27.      }
28.    }
29. }