using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;
using UnityStandardAssets.Characters.FirstPerson;

public class PlayerVitals : MonoBehaviour
{
    public Slider healtSlider;
    public int maxHealth;
    public int healthFallRate;

    public Slider thirstSlider;
    public int maxThirst;
    public int thirstFallRate;


    public Slider hungerSlider;
    public int maxHunger;
    public int hungerFallRate;

    public Slider staminaSlider;
    public int maxStamina;
    private int staminaFallRate;
    public int staminaFallMult;
    private int staminaRegainRate;
    public int staminaRegainMult;

    private CharacterController charController;
    private FirstPersonController playerController;


    void Start()
    {
        healtSlider.maxValue = maxHealth;
        healtSlider.value = maxHealth;

        thirstSlider.maxValue = maxThirst;
        thirstSlider.value = maxThirst;

        hungerSlider.maxValue = maxHunger;
        hungerSlider.value = maxHunger;

        staminaSlider.maxValue = maxStamina;
        staminaSlider.value = maxStamina;

        staminaFallRate = 1;
        staminaRegainRate = 1;

        charController  = GetComponent<CharacterController>();
        playerController = GetComponent<FirstPersonController >();
    }

    void Update()
    {
        //controllo vita
        if (hungerSlider.value <= 0 && (thirstSlider.value <= 0))
        {
            healtSlider.value -= Time.deltaTime / healthFallRate * 2;
        }
        else if (hungerSlider.value <= 0 || thirstSlider.value <= 0)
        {
            healtSlider.value -= Time.deltaTime / healthFallRate ;

        }

        if (healtSlider.value <= 0)
        {
            DeathCharater();
        }

        //controllo fame
        if (hungerSlider.value >= 0)
        {
            hungerSlider.value -= Time.deltaTime / hungerFallRate;
        }
        else if (hungerSlider.value <= 0)
        {
            hungerSlider.value = 0;
        }
        else if (hungerSlider.value >= maxHunger)
        {
            hungerSlider.value = maxHunger;
        }

        // controllo sete
        if (thirstSlider.value >= 0)
        {
            thirstSlider.value -= Time.deltaTime / thirstFallRate;
        }
        else if (thirstSlider.value <= 0)
        {
            thirstSlider.value = 0;
        }
        else if (thirstSlider.value >= maxThirst)
        {
            thirstSlider.value = maxThirst;
        }

        // controllo stamina
        if (charController.velocity.magnitude>0 && Input.GetKey(KeyCode.LeftShift))
        {
            staminaSlider.value -= Time.deltaTime / staminaFallRate * staminaFallMult;
        }
        else
        {
            staminaSlider.value += Time.deltaTime / staminaRegainRate * staminaRegainMult;
        }
        if (staminaSlider.value >= maxStamina)
        {
            staminaSlider.value = maxStamina;
        }
        else if (staminaSlider.value <= 0)
        {
            staminaSlider.value = 0;
            playerController.m_RunSpeed = playerController.m_WalkSpeed;
        }
        else if (staminaSlider.value >= 0)
        {
            playerController.m_RunSpeed = playerController.m_RunSpeedNorm;
        }
    }

    void DeathCharater()
    {
        //fai qualcosa se il charater ha la salute <= 0
    }



}