[Noob] Int question

I've tried the 'answers' site, but never seem to get replies there so hopefully someone can help me here.

Ok, so I have set a public int to my c# script as follows:

Code (CSharp):

1. public int isEnemy;

I have changed the value on the actual object to "1".

I have other objects which are set to '0' (not an enemy).

I want to use this int in another script to check whether or not the object is an "enemy" based on the value i manually set.

The method I used, as the int is not "static" - was to create another 'static' version:

Code (CSharp):

1. public static int yesEnemy;

And then in a Start() function, try and set them to be the same:

Code (CSharp):

1.  void Start()
2.      {
3.        yesEnemy = isEnemy;
4.      }

But when I try to call "yesEnemy" from my other script to check whether it is "1" - it always returns as "0"..

Can anyone help me figure this out please as I've been unsuccessful . I'm very new to all this so I'm just learning at the moment.. It's probably very obvious.

Thanks in advance~

 

Don't use static veriables.

Watch a tutorial on GetComponent. I have one in my signature under my interactive tutorial thread. You need to get a reference to the component you want, and then access that value.

 

Hey, thanks for the reply I appreciate it. I'll check out your tutorials now. I already use some aspects of GetComponent so hopefully will be straight forward .

 

I watched your GetComponent video, and while I can see how it would be useful in this scenario I was unable to implement it.

I get (what seems to be a common issue) in: "Object reference not set to an instance of an object".

I believe this is because there is multiple instances of the component in my project and it doesn't know specifically which one I want to pull the info from?

i.e I have a script attached to 20 items, each with the variable: "isEnemy". 10 have that set to 1, the other 10 are set to 0. I want it to specifically pull info from the GameObject being used to check whether or not it is an enemy or not..

 

So you need a list of that type (component)

Iterate through it with a foreach loop, and check each indiivual element to see if the int is a value of 1 or 0.

Code (CSharp):

1. list<Component> objs = new list<Component>();
2.  
3. foreach (var c in components)
4. {
5. //if c.isEnemy == 1
6. //We have an enemy!
7. }

 

Awesome exactly what I needed, thanks a lot.

 

Because it said noob in the title I thought Id offer another solution also.

Try using the tags built into unity. That way you can simply ask if a gameobject is an enemy with only a reference to to gameobject.

 

And while your 1 or 0 values work fine, a common data type for true/false type values is the boolean type, e.g...

Code (CSharp):

1. bool isEnemy;
2.  
3. isEnemy = true;
4.  
5. if (isEnemy)
6. {
7.   Debug.Log("isEnemy = true");
8. }
9. else
10. {
11.   Debug.Log("isEnemy = false");
12. }

That can make your code more clear and can help with bugs by not allowing values other than true or false, whereas your int variable can have values other than 0 or 1 which could cause hard to find bugs.