Error CS1023

Questions & Answers
1

I need help with this error I can’t figure out what it’s telling me to fix, I see where it want me to fix but not how to fix it. Anyone got any suggestive actions? ( The problem is on line 19)

using UnityEngine;
using System.Collections;

public class Shooting : MonoBehaviour
{
	public GameObject bullet_pefab;
	float bulletImpulse = 20f;
		// Use this for initialization
		void Start ()
		{
	
		}
	
		// Update is called once per frame
		void Update ()
		{
		if (Input.GetButtonDown ("Fire1"))
						
		Camera camera = Camera.main;
		GameObject thebullet = (GameObject)Instantiate(bullet_pefab, camera.transform.position, camera.transform.forward, camera.transform.rotation);
		thebullet.rigidbody.AddForce( camera.transform.forward * bulletImpulse, ForceMode.Impulse);			
		}
}
2

Because your if statement doesn’t have braces it looks at the next line and sees a declaration which is not allowed. The error is explained here Error CS1023

Your update should be:

void Update() {
  if (Input.GetButtonDown("Fire1")) {
    Camera camera = Camera.main;
    GameObject thebullet = (GameObject)Instantiate(bullet_pefab, camera.transform.position, camera.transform.forward, camera.transform.rotation);
    thebullet.rigidbody.AddForce( camera.transform.forward * bulletImpulse, ForceMode.Impulse);
  }
}
3

You are assigning Camera only when you’ve clicked the button(“Fire1”)
but the rest of code will still be executed. (READ AS: You’ve missed brackets)

Change this:

void Update ()
{
if (Input.GetButtonDown ("Fire1"))
 
Camera camera = Camera.main;
GameObject thebullet = (GameObject)Instantiate(bullet_pefab, camera.transform.position, camera.transform.forward, camera.transform.rotation);
thebullet.rigidbody.AddForce( camera.transform.forward * bulletImpulse, ForceMode.Impulse);
}

to this:

void Update ()
{
	if (Input.GetButtonDown ("Fire1"))
	{
		Camera camera = Camera.main;
		GameObject thebullet = (GameObject)Instantiate(bullet_pefab, camera.transform.position, camera.transform.rotation);
		thebullet.rigidbody.AddForce( camera.transform.forward * bulletImpulse, ForceMode.Impulse);
	}
}

That change should solve the problem :wink:

4

You must enclose the code after the if with brackets:

    void Update ()
    {
      if (Input.GetButtonDown ("Fire1")){
        Camera camera = Camera.main;
        GameObject thebullet = (GameObject)Instantiate(bullet_pefab, camera.transform.position, camera.transform.forward, camera.transform.rotation);
        thebullet.rigidbody.AddForce( camera.transform.forward * bulletImpulse, ForceMode.Impulse);
      } 
    }

The error CS1023 means that you’re declaring a variable in some “forbidden” place. Temporary variables in C# only exist inside the block where they are declared, what without brackets would be the single instruction after the if.