Simple bullet script

Question

I am trying to make a simple bullet script that will spawn in a bullet(the bullet itself will have the script that does damage), but I am getting an error.

using UnityEngine; using System.Collections;

public class shooting : MonoBehaviour {

 public float bulletSpeed = 10;
 
 
 
 void Fire() 
 {
 Rigidbody bulletClone = (Rigidbody) Instantiate(bullet, transform.position, transform.rotation);
 bulletClone.velocity = transform.forward * bulletSpeed;

 // You can also acccess other components / scripts of the clone
 //rocketClone.GetComponent<MyRocketScript>().DoSomething();
 }
 
 
 // Use this for initialization
 void Start () {
 
 }
 
 // Update is called once per frame
 void Update () {
     if (Input.GetButtonDown("Fire1"))
         Fire(); 
 
 }

}

it is telling be that bullet does not exist in this context; there is a bullet in my prefabs, so I am not really sure what is going on.

Answer 1

Best Answer

Answer by clunk47 · Nov 23, 2013 at 02:55 AM

'bullet does not exists in the current context', because you don't have a 'bullet' variable. You need a variable to reference the prefab. Easiest way is to make a public variable so you can drag and drop the prefab onto your scripted object's 'shooting' component in the inspector:

 using UnityEngine; 
 using System.Collections;
 
 public class shooting : MonoBehaviour 
 {
     public float bulletSpeed = 10;
     public Rigidbody bullet;
     
     
     void Fire()
     {
         Rigidbody bulletClone = (Rigidbody) Instantiate(bullet, transform.position, transform.rotation);
         bulletClone.velocity = transform.forward * bulletSpeed;
     }
 
     void Update () 
     {
         if (Input.GetButtonDown("Fire1"))
             Fire();
     }
 }

5 Show 1 · Share

connorwforman · Jun 28, 2017 at 12:27 PM 0

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For the public float variable, you need to add an 'f' after the 10, otherwise the script will not work correctly. All float variables with a number attached need to have an 'f' after them.

Answer 2

Here is my insanely, way too complicated bullet script. But hey, it works for my game!

 public float delaytoDestroy = 10;
     public float speed;
     private GameObject menu;
     public float delaydeath = 10;
     private GameObject FPS;
     private GameObject PauseManager;
     private GameObject Player;
     private GameObject PauseCamera;
     bool cursorLocked = false;
     
     //Find Inactive GameObjects
     GameObject FindInActiveObjectByName(string name)
     {
         Transform[] objs = Resources.FindObjectsOfTypeAll<Transform>() as Transform[];
         for (int i = 0; i < objs.Length; i++)
         {
             if (objs[i].hideFlags == HideFlags.None)
             {
                 if (objs[i].name == name)
                 {
                     return objs[i].gameObject;
                 }
             }
         }
         return null;
     }
 
     //Assign gameobjects to inactive current scene objects
     void Start()
     {
         menu = FindInActiveObjectByName("DeathMenu");
         FPS = FindInActiveObjectByName("FPS");
         PauseManager = FindInActiveObjectByName("PauseManager");
         Player = FindInActiveObjectByName("Player");
         PauseCamera = FindInActiveObjectByName("PauseCamera");
     }
 
 
     void Update()
     {
         transform.position += transform.forward * Time.deltaTime * speed;
 
         StartCoroutine(Wait(delaytoDestroy));
         IEnumerator Wait(float delay)
         {
 
 
             yield return new WaitForSeconds(delay);
             {
                 Destroy(gameObject);
             }
         }
     }
 
     void OnTriggerEnter(Collider other)
     {
         //Destroy
 
         StartCoroutine(Wait(delaytoDestroy));
         IEnumerator Wait(float delay)
         {
 
 
             yield return new WaitForSeconds(delay);
             {
                 Destroy(gameObject);
                 if (other.CompareTag("Player"))
                 {
                     StopCoroutine("Wait");
                 }
             }
         }
         
             //Death
 
             StartCoroutine(WaitFirst(delaydeath));
         IEnumerator WaitFirst(float delay)
         {
 
 
             yield return new WaitForSeconds(delay);
             if (other.CompareTag("Player"))
             {
                 menu.SetActive(true);
             }
         }
 
         StartCoroutine(Wait2(delaydeath));
         IEnumerator Wait2(float delay)
         {
 
 
             yield return new WaitForSeconds(delay);
             if (other.CompareTag("Player"))
             {
 
                 FPS.SetActive(false);
             }
         }
 
         StartCoroutine(Wait3(delaydeath));
         IEnumerator Wait3(float delay)
         {
 
 
             yield return new WaitForSeconds(delay);
             if (other.CompareTag("Player"))
             {
 
                 PauseManager.SetActive(false);
             }
         }
 
         StartCoroutine(Wait4(delaydeath));
         IEnumerator Wait4(float delay)
         {
 
 
             yield return new WaitForSeconds(delay);
             if (other.CompareTag("Player"))
             {
 
                 Player.SetActive(false);
             }
         }
 
         StartCoroutine(Wait5(delaydeath));
         IEnumerator Wait5(float delay)
         {
 
 
             yield return new WaitForSeconds(delay);
             if (other.CompareTag("Player"))
             {
 
                 PauseCamera.SetActive(true);
             }
         }
         StartCoroutine(Wait7(delaydeath));
         IEnumerator Wait7(float delay)
         {
 
 
             yield return new WaitForSeconds(delay);
             if (other.CompareTag("Player"))
             {
                 cursorLocked = !cursorLocked;
             }
         }
         StartCoroutine(Wait6(delaydeath));
         IEnumerator Wait6(float delay)
         {
 
 
             yield return new WaitForSeconds(delay);
             if (other.CompareTag("Player"))
             {
                 if (cursorLocked)
                 {
                     Cursor.lockState = CursorLockMode.None;
                     Cursor.lockState = CursorLockMode.Confined;
                     Cursor.visible = true;
                 }
             }
         }
 
 
     }
 
 }

Simple bullet script

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