How to select the Nth gameObject in a list and put it into a gameObject variable

Questions & Answers
1

I’m trying to put a check in my game where it disables everything that doesn’t have the same ID as the index. This is the system I have set up:

void WeaponSelect() {
	selector = Input.GetAxis ("Scroll");
	index += selector;
	if (index > weapons) {
		index = 1;
	}if (index < 1) {
		index = weapons;
	}
	check += 1;
	checkedObject = weaponList[check];
	if (checkedObject.GetComponent<WeaponID> ().ID == index) {
		checkedObject.GetComponent<WeaponID> ().onabled = true;
	} else {
		checkedObject.GetComponent<WeaponID> ().onabled = false;
	}
	if (check > weapons) {
		check = 1;
	}
}

but this gives off this error:

error CS1502: The best overloaded method match for `System.Collections.Generic.List<UnityEngine.GameObject>.this[int]' has some invalid arguments

and

 error CS1503: Argument `#1' cannot convert `float' expression to type `int'

If this isn’t the right way to do this, what is? Can anybody please help?

2

You want something like this:

List<GameObject> weaponList = new List<GameObject>();
float scrollTracker;
float scrollSensitivity = 3.0f;
int weaponIndex;
GameObject selectedWeapon = 0;

void Update(){
scrollTracker += Input.GetAxis("Scroll") * scrollSensitivity * Time.deltaTime;
scrollTracker = Mathf.Clamp(scrollTracker, 0, weaponList.Count - 1); 
weaponIndex = (int)Mathf.Round(scrollTracker);
selectedWeapon = weaponList[weaponIndex];
}

Lists use indices, which are ints. But GetAxis returns a float, so let’s say you have the index 2 and GetAxis returns 0.6f. Then the resulting index would be 2.6f, which is still 2 when it is converted to an int. So that why you need to use a float value to keep track of the scrolling.
Hope this helps, please take a look at my example code and try to understand it :slight_smile:

Good luck!
-Gameplay4all