How to display a certain string out of array depending on a number?

Question

Hello, I am trying to create a week system Monday through Sunday and I have these names in an array of string and I want them to be displayed accordingly to the number of that day. However, whenever I try to create a loop for it, something goes wrong.

 public TextMeshProUGUI dayText;
 public string[] dayName;

 public int countDays;
 public int dayNo;
 bool test;
 // Start is called before the first frame update
 void Start()
 {
     dayName[0] = "Monday";
     dayName[1] = "Tuesday";
     dayName[2] = "Wednesday";
     dayName[3] = "Thursday";
     dayName[4] = "Friday";
     dayName[5] = "Saturday";
     dayName[6] = "Sunday";
     dayNo = 1;
 }

 // Update is called once per frame
 void Update()
 {
     CountDays();
 }
 public void CountDays()
 {
     //TO DO 
     //DISPLAY NAME OF THE DAY ACCORDING TO THE NUMBER
     if (Input.GetKeyDown(KeyCode.A))
     {
         test = true;
     }
     if (test)
     {
         for (int i = 0; i < 7; i++)
         {
             dayText.text = dayName[i];
             print(i);


         }
     }
 }

As you can see in CountDays() function I was trying to put a condition to break out of the loop but immediately when I press "A" it changes from Monday to Sunday and I want it to be Monday -> Tuesday -> Wednesday etc. Please and thank you in advance for any help

Answer 1

Answer by TheTrueDuck · Jun 29 at 01:41 PM

Hi! Instead of doing your for loop, try simply incrementing the dayNo variable and printing that out:

 void Update()
 {
     if (Input.GetKeyDown(KeyCode.A))
     {
         dayNo += 1;
 
         dayText.text = dayName[dayNo];
         Debug.Log(dayName[dayNo]);
     }
 }

The problem was that you were going through all 7 days in one click instead of one at a time.

You'll notice the above code will run into an error once this number goes past 7, but you can loop it around with the fancy modulo (%) operator:

 dayNo = (dayNo + 1) % 7;

Hope this helps :D

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Baniucha · Jun 30 at 01:10 PM 0

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Sir, you are a Saint and a Scholar. Thank you so much for your help :D Not only after "Sunday" it loops back to "Monday", I also added a day number to each day. I'm attaching a full code if anybody runs into similar problem:

  if (Input.GetKeyDown(KeyCode.A))
         {
             if (countDays >= 7)
             {
                 countDays = 0;
             }
             else
             {
                 countDays = (countDays + 1) % 7;
                 dayNo++;
                 dayText.text = dayName[countDays] + "\n" + "Day " + dayNo;
                 Debug.Log(dayName[countDays]);
             }
         }

How to display a certain string out of array depending on a number?

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