help with basic projectile

Questions & Answers
1

Similar question to before, but a bit clearer I hope. Currently I have one projectile that can be fired in my scene when I press button down. I have another physical projectile in my scene, which is positioned next to it. I want to be able to fire it also using button down after I fire the first projectile. I Dont want to instantiate or anything like that. Here is the code I have:

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class rocket : MonoBehaviour
{
    public float force = 50f;

    private Rigidbody rb;

    public bool IsLaunched;

    public float fakeGravity = 5f;

    public Transform tip;

    void Start()
    {
        rb = GetComponent<Rigidbody>();
    }

    private void FixedUpdate()
    {
        if (IsLaunched)
        {
            rb.AddForce(transform.up * force);

            rb.AddForceAtPosition(Vector3.down * fakeGravity, tip.position);
        }
    }

    private void Update()
    {
        if (Input.GetButtonDown("Fire1"))
        {
            IsLaunched = true;
            rb.useGravity = true;
        }
    }
}
2

If you have an array of rigidbodies, you can fire off the next rigidbody in the array when Fire1 is pressed:

public Rigidbody[] rbs;

int Index = 0;

     private void Update()
     {
         if (Input.GetButtonDown("Fire1"))
         {
             IsLaunched = true;
             rbs[Index].useGravity = true;

            Index++;
         }
     }

@gamedevunity12

3

Note: This answer comes largely as a response to the existing answer and comments.

By having the set of objects tracked together, another approach to take would be to have a separate controller to launch the rockets instead. For example:

// Not complete, but intended to include important details
public class RocketLauncher : MonoBehaviour
{
	// Use this to add an indeterminate
	// quantity of rockets and to easily cycle through them
	public List<Rocket> rockets;
	// Or, alternatively, use this with a fixed
	// set of rockets
	public Rocket[] rockets;
	int lastRocketFired = 0;
	
	void Update()
	{
		if(Input.GetButtonDown("Fire1") && rockets.Count > 0) // List
		//if(... && lastRocketFired < rockets.Length) // Array
		{
			// Fire first rocket and remove from the list so the next
			// in line will be the new first entry
			rockets[0].Launch();
			rockets.RemoveAt(0);
			
			// For an array, keep track of which you last launched
			// instead, then fire the next in sequence
			rockets[lastRocketFired].Launch();
			lastRocketFired++; // Add 1
		}
	}
}

// Example of rockets adding themselves to the launcher
public class Rocket : MonoBehaviour
{
	private static RocketLauncher launcher;
	
	// Start function will add itself to the launcher
	// However, it may not have strict control over the order
	// if multiple rockets will be added at the same time (i.e. game start)
	void Start()
	{
		if(launcher == null) // More efficient than reusing FindObject
		{
			launcher = (RocketLauncher)FindObjectOfType(typeof(RocketLauncher));
		}
		// Adding itself to List<> variant
		launcher.rockets.Add(this);
	}
	
	public void Launch()
	{
		isLaunched = true;
		rb.useGravity = true;
	}
}