How can i convert if?

Question

C++ / C#

How can I and can I even convert a lot of if with (Input....) Example:

int i;

void example ()
{
   if(Input.GetKeyDown(KeyCode.1){
      i = 1;
   }
   if(Input.GetKeyDown(KeyCode.2){
         i = 2;
      }
   if(Input.GetKeyDown(KeyCode.3){
         i = 3;
      }
}

More efficient code?

Answer 1

In the general case, no - anyway, in some place you will be called by Input.GetSomethingThere.
And through the chain of ifs, there is the most effective option (unless, of course, you check only those buttons that make sense to check)
But it seems like some new input system has appeared in Unity, which should be more flexible:
https://gamedevbeginner. com/input-in-unity-made-ea...

Answer 2

List<KeyCode> keysNums = new List<KeyCode> { KeyCode.Alpha1, KeyCode.Alpha2, KeyCode.Alpha3, KeyCode.Alpha4 };

void Update()
{
        foreach (var key in keysNums)
        {
            if ( Input.GetKeyDown(key))
            {
                int i = keysNums.IndexOf(key)];
                ....
            }
        }
}