koobas.hobune.stream
Creating a static array of a class
Here's my problem: I'm working on an RPG and I have created public classes to handle characters. These classes include all the information that would be stored on the character (their name, their attributes, life pool, skills, etc) as well as many methods that might be commonly called.
Here's an example of what I mean:
public class Character {
// Name and Class Information:
string _name;
string _classname;
int _class;
// Attributes:
int _str;
int _int;
int _agi;
int _wil;
// Character Name:
public string CharacterName
{
get {return _name; }
set {_name = value; }
}
// Character Strength:
public int Strength
{
get {return _str; }
set {_str = value; }
}
// Character Intellect:
public int Intellect
{
get {return _int; }
set {_int = value; }
}
// Character Agility:
public int Agility
{
get {return _agi; }
set {_agi = value; }
}
// Character Willpower:
public int Willpower
{
get {return _wil; }
set {_wil = value; }
}
I need to store several instances of this class (say, for example, 6) in a static array that can be reached from anywhere within my game.
I've done this by creating another class to handle it and called it like this:
public class vrb {
// Object Variables:
public static Character[] PC = new Character[4];
When I attempt to use these classes in code, Monodevelop sees them just fine, and I can do things like type: vrb.PC[1].CharacterName = "Bob Smith"; and I get no errors.
But, when I run things, I frequently get a lot of null reference errors or nothing happens at all. So, I'm hoping someone can explain to me what I need to do to make what I want happen or point me to something that will explain why it will or will not work.
Are you initializing each character in the PC array in your vrb constructor? You need to make sure that they are not null before you start assigning things to them. The compiler won't know that they will be null, so you'll find those errors at run time.
Frequently, one of the errors I get doesn't have anything to do with it being null, but about it not be attached to an instance of an object. I didn't think that was a requirement for scripts that don't inherit anything from $$anonymous$$onoBehaviour.
Hi
you probably want to create a singleton class.
This would look something like this:
public class Controller : MonoBehaviour {
private static Controller _instance = null;
public static Controller SharedInstance
{
get{
if(_instance == null)
_instance = GameObject.FindObjectOfType(typeof(Controller)) as Controller;
return _instance;
}
}
void Awake()
{
_instance = this;
// DontDestroyOnLoad(this) // if you need
}
// if you still want to use an array ;)
public Character[] PC = new Character[4];
}
then you can access this from everywhere using
Controller.SharedInstance.PC[...]...
You need to attach this to a GameObject in your scene.
Also make sure you have initiated some characters / filled the array. NullReferenceExceptions can have many sources.
A singleton is also useful for a controller-role through the entire game.
Singleton class? Does that mean that everything is contained within the class and that it instantiates from within itself? I'm confused, but if anyone can point me to some information about them, that would be awesome. I'm sure I could figure it out. Thanks for the help so far.
It basically means you only have one instance of this class and you can access it from everywhere. This is good for controllers because you can be sure you wont have your data spread on multiple instances and have easy access.
Im on mobile bit can provide you a link asap. Or just google it ;) theres a good page on the wiki and also some others ;)
