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

public class AuraEmissionFX : MonoBehaviour
{
    [SerializeField] private ParticleSystem trailSystem;
    [SerializeField] private ParticleSystem smokeSystem;
    private ParticleSystem.EmissionModule trailEmission;
    private ParticleSystem.EmissionModule smokeEmission;

    [SerializeField] private ClassResource resource;

    private int trailMin = 0;
    private int trailMax = 10;

    private int smokeMin = 0;
    private int smokeMax = 30;

    float resourceMax;
    float normalizedValue;

    private void Awake()
    {
        trailEmission = trailSystem.emission;
        smokeEmission = smokeSystem.emission;

        resource.onResourceChanged.AddListener(UpdateEmissionBasedOnValue);
    }


    private void UpdateEmissionBasedOnValue(float currentValue)
    {
        resourceMax = resource.GetMaxValue();

        //trailEmission = Range[min trail, max trail] based on currentValue/resourceMax
        //smokeEmission = Range[min smoke, max smoke] based on currentValue/resourceMax

        normalizedValue = Mathf.Clamp01(currentValue / resourceMax);

        // Update trail emission
        trailEmission.rateOverTime = Mathf.Lerp(trailMin, trailMax, normalizedValue);


        // Update smoke emission
        smokeEmission.rateOverTime = Mathf.Lerp(smokeMin, smokeMax, normalizedValue);

    }
}