Accessing a script attached to an object.

Unity Engine
1

Hi all,

I have created a list of objects, which in this case are pegs of four different colours. When the pegs are instantiated a script called “pegObjectsClass” is added to the object and they are then added to the list. Here’s the code for instantiation :

static public void instantiatePegYellow () {
	pegObject = Instantiate(pegPrefabYellow, pegPosition, rotationAngle) as GameObject;
	pegObject.AddComponent("pegObjectsClass");
	pegObject.rigidbody.useGravity = false;
	cubeClass.pegObjects.Add(pegObject);
	Debug.Log(cubeClass.pegObjects.Count);
}

what I need to do is to access a bool that is held within the peg objects class called “isAttached” from the last peg that was added to the list.

I know that to access the last peg from the list I will use :

cubeClass.pegObjects.Count - 1;

What I need help with is being able to access the script attached to this specific peg, any help is greatly appreciated.

Regards

2

I think it should just be (off the top of my head):

cubeClass.pegObjects[cubeClass.pegObjects.Count - 1].pegObjectsClass.isAttached

though this might depend on what cubeClass.pegObjects is (an array or arraylist)

3

My mistake, it is a :

List<GameObject> pegObjects;
4

I believe this should work for a list:

cubeClass.pegObjects.Item[cubeClass.pegObjects.Count - 1].pegObjectsClass.isAttached
5

I believe it would be

cubeClass.pegObjects.Item[cubeClass.pegObjects.Count - 1].GetComponent(pegObjectClass).IsAttached

or you can do

cubeClass.pegObjects.Item[cubeClass.pegObjects.Count - 1].GetComponent("pegObjectClass").IsAttached
6

I get an error for the use of ‘Item’ :

Error CS1546 : Property ‘Item’ is not supported by the c# language. Try to call the accessor method ‘System.Collections.Generic.List<UnityEngine.GameObject>.get_Item(int)’ directly.

However I don’t know how I would go about doing this?

7

Does anyone have any knowledge on this above error who can help me?

8

I don’t know much about C# Lists, but maybe try this:

cubeClass.pegObjects[cubeClass.pegObjects.Count - 1].GetComponent(pegObjectClass).IsAttached
9

Im not having much luck with this problem. Is there any alternative to using a List in my specific case? The reason im using a List is that I needed to combine four different game objects with different tags.

What would be useful would be if I could add the objects to an array dyamically.

Is it possible to add the game objects to an array in the same way I added them to the list?

I guess the main problem is how to access a script attached to an object though!

10

What error does it give this time?

It’s messy, but if you only ever need to access the last peg you could just make a LastPeg variable and assign when your adding pegs to the list.

11

Yeah I do actually have a currPeg game object variable that I haven’t used so i’ll give that a try.

Thanks for all the help and advice!

12

Im finding it hard to access the script attached to the currPeg. I have used the documentation for unity to come up with this code so far:

public pegObjectsClass other;

other = currPeg.GetComponent("pegObjectsClass") as pegObjectsClass;

static public void instantiatePegYellow () {
		if(cubeClass.pegObjects.Count > 0) {
			if(other.isAttached == true) {
				pegObject = Instantiate(pegPrefabYellow, pegPosition, rotationAngle) as GameObject;
				pegObject.AddComponent("pegObjectsClass");
				pegObject.rigidbody.useGravity = false;
				cubeClass.pegObjects.Add(pegObject);
				Debug.Log(cubeClass.pegObjects.Count);
			} else {
				Destroy(cubeClass.pegObjects[cubeClass.pegObjects.Count - 1]);
				pegObject = Instantiate(pegPrefabYellow, pegPosition, rotationAngle) as GameObject;
				pegObject.AddComponent("pegObjectsClass");
				pegObject.rigidbody.useGravity = false;
				cubeClass.pegObjects.Add(pegObject);
				Debug.Log(cubeClass.pegObjects.Count);
			}
		} else {
			pegObject = Instantiate(pegPrefabYellow, pegPosition, rotationAngle) as GameObject;
			pegObject.AddComponent("pegObjectsClass");
			pegObject.rigidbody.useGravity = false;
			cubeClass.pegObjects.Add(pegObject);
			Debug.Log(cubeClass.pegObjects.Count);
		}
	}

however I get the error ‘An object reference is used to access the non-static member pegObject.other’ and if i make it static it still doesnt work, any ideas??