mmorpg2d/Assets/Script/SpriteHealthBar.cs

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

public class SpriteHealthBar : MonoBehaviour
{
    private Vector3 startScale;
    
    public Transform healthBarFill;

    public float health;
    void Awake()
    {
        startScale = healthBarFill.localScale;
    }

    public void SetHealth(float amount, float maxHealth = 100f){
        if(maxHealth == 0 ){Debug.Log("max health is 0"); return;}
        health = amount;
        float amountMult = amount / maxHealth;

        if(amountMult<0){amountMult=0;}

        //Debug.Log($"Setting health on {transform.name}: {amount} / {maxHealth}");
        
        healthBarFill.localScale = new Vector3(startScale.x * amountMult, startScale.y,startScale.z );
    }

}