,Unity slider bar

Questions & Answers
1

so i made a script about a slider which i want only to decrease when a button is pressed and stop when the button is not being pressed but when i tried it and i have a problem when i press it and hold it it only decreases by 15 i want it to decrease slowly even if the button is pressed on
pls help
I used this code

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;

public class StaminaBar : MonoBehaviour
{
public Slider staminaBar;
private int currentStamina;
private int maxStamina = 100;
public static StaminaBar instance;
// Start is called before the first frame update

private void Awake()
{
    instance = this;
}

void Start()
{
    currentStamina = maxStamina;
    staminaBar.maxValue = maxStamina;
    staminaBar.value = maxStamina;
    
}

public void useStamina(int amount)
{
    if(currentStamina - amount >= 0)
    {
        currentStamina -= amount;
        staminaBar.value = currentStamina;
    }
    else
    {
        Debug.Log("Not Enough Stamina");
    }
}

if(Input.GetKeyDown(KeyCode.LeftShift))
{
StaminaBar.instance.useStamina(15);
}

}

3

GetKeyDown will check to see if the key has been pressed once. What you want to use is GetKey, which will continue to return true whilst that key is being pressed.

2

You could just create a while loop that reduces by 1.

 private void Awake()
 {
     instance = this;
 }
 void Start()
 {
     currentStamina = maxStamina;
     staminaBar.maxValue = maxStamina;
     staminaBar.value = maxStamina;
     
 }
 
 public void useStamina(int amount)
 {
     if(currentStamina - amount >= 0)
     {
        while(amount > 0) 
	{
	    currentStamina -= 1;
	}    
     }
     else
     {
         Debug.Log("Not Enough Stamina");
     }
 }

if(Input.GetKeyDown(KeyCode.LeftShift)) { StaminaBar.instance.useStamina(15); }

}