How to update UI Text when a new element added to the connected List

Questions & Answers
1

I’m trying to make a small game for myself to learn more about unity and in the game the player will have units (that has a class of its own) with randomized stats added to a List every minute.

A new unit will be added to the List every minute and the selected unit will be removed from the list to be assigned somewhere else.

I want to update the corresponding UI text panel when a new unit is added or a unit is removed. How can i achieve this.

Also I’m new to Unity so if this is a dumb question I’m really sorry.

2

Not a dumb question.

I’m guessing you already have an array with the units and some sort of way to add and remove. You can use something like events for this.

Example:


List list = new List() ;

public event Action onAdded;
public event Action onRemoved;

public void Add(Unit unit)
{
  list.Add(unit);
  onAdded?.Invoke(unit);
}

public void Remove(Unit unit) 
{
  if (list.Remove(unit))
    onRemoved?.Invoke(unit);
}

Then you can in your UI code have a reference to this class and listen to events:


private void Start() 
{
  myArmyList.onAdded += OnUnitAdded;
} 

private void OnUnitAdded(Unit unit) 
{
  Refresh... 
}