DeviantMobile-Rohan/Assets/New Lowpoly Models/Scripts/SegmentedStaminaUI.cs

using UnityEngine;
using UnityEngine.UI;

public class SegmentedStaminaUI : MonoBehaviour
{
    public Image[] staminaBoxes;

    private Stamina playerStamina;

    private void Start()
    {
        InvokeRepeating(nameof(FindPlayerStamina), 0f, 0.5f);
    }

    void FindPlayerStamina()
    {
        PlayerControllerNewRohan player =
            FindObjectOfType<PlayerControllerNewRohan>();

        if (player == null)
            return;

        playerStamina = player.GetComponent<Stamina>();

        if (playerStamina == null)
            return;

        playerStamina.OnStaminaChanged += UpdateUI;

        UpdateUI(
            playerStamina.currentStamina,
            playerStamina.maxStamina
        );

        CancelInvoke(nameof(FindPlayerStamina));
    }

    void UpdateUI(float current, float max)
    {
        float percent = current / max;

        int active =
            Mathf.FloorToInt(percent * staminaBoxes.Length);

        for (int i = 0; i < staminaBoxes.Length; i++)
        {
            staminaBoxes[i].enabled = i < active;
        }
    }

    private void OnDestroy()
    {
        if (playerStamina != null)
        {
            playerStamina.OnStaminaChanged -= UpdateUI;
        }
    }
}