Gun Class with Array List of Projectiles

Questions & Answers
1

I have a class named Gun and I want to have an Array List of projectiles from a Projectile class.

private List<Projectile> projectiles;

private void addProjectile()
{
	Projectile current = new Projectile();
	projectiles.Add(current);
}

While the game is executing I get an error saying “You are trying to create a MonoBehaviour using the ‘new’ keyword. This is not allowed.”

The projectile class has all the information I need plus it points to a mesh of a bullet.

How do I fix this problem?

2

Use the following instead:

GameObject proj = Instantiate( <ProjectileGameObject> ) as GameObject; projectiles.Add( proj.GetComponent<Projectile>() );

Replace <ProjectileGameObject> with a GameObject, usually a prefab of some sort.

3

The problem is that the class Projectile apperatnly inherits from MonoBehaviour, MonoBehaviour is needed to provide the unity functions update, awake, onMouseOpen and is needed to be able to attach a script on a gameObject in the inspector.

You have two solutions:

  1. You remove inheriting from MonoBehaviour in the Projectile class. This only works if Projectile don´t manipulate the world on anyway or use don´t use any GameObject functions.
  2. You add the class Projectile to the GameObject in the inspector then you use the code
    “projectileClass = gameObject.GetComponent(“Projectile”)” in the gun class Start() function.