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

public class PlayerController : MonoBehaviour
{

    public GameObject cameraBase;
    public float movementSpeed;
    public float jumpVelocity;
    public float fallMultiplier = 2.5f;
    public float lowJumpMultiplier = 2f;
    public float distanceToGround;
    public int numberOfJumps;
    public int jumpsLeft;
    Rigidbody playerBody;
    Collider playerCollider;

    public Vector3 currentVelocity;

    float inputX;
    float inputZ;
    Vector3 movement;

    // Start is called before the first frame update
    void Start()
    {
        jumpsLeft = numberOfJumps;
        playerBody = GetComponent<Rigidbody>();
        playerCollider = GetComponent<CapsuleCollider>();
        distanceToGround = playerCollider.bounds.extents.y;
    }

    // Update is called once per frame
    void Update()
    {
        if (isGrounded()) jumpsLeft = numberOfJumps;

        if (playerBody.velocity.y < 0)
        {
            playerBody.velocity += Vector3.up * Physics.gravity.y * (fallMultiplier - 1) * Time.deltaTime;
        }
        else if (playerBody.velocity.y > 0 && !Input.GetKey(KeyCode.Space) || !Input.GetButton("Jump") || jumpsLeft < numberOfJumps - 1)
        {
            playerBody.velocity += Vector3.up * Physics.gravity.y * (lowJumpMultiplier - 1) * Time.deltaTime;
        }
    }

    private void FixedUpdate()
    {

        inputX = Input.GetAxis("Horizontal");
        inputZ = Input.GetAxis("Vertical");

        if (Input.GetKeyDown(KeyCode.Space) && jumpsLeft > 0)
        {
            jumpsLeft--;
            playerBody.velocity = Vector3.up * jumpVelocity;
        }

        movement = new Vector3(inputX * movementSpeed, playerBody.velocity.y, inputZ * movementSpeed);

        Vector3 actualMotion = Quaternion.Euler(0, cameraBase.transform.eulerAngles.y, 0) * movement;

        /*
        if(Input.GetKey(KeyCode.W))
        {
            playerBody.MovePosition(transform.position + (cameraBase.transform.forward * movementSpeed * Time.deltaTime));
        }
        if (Input.GetKey(KeyCode.S))
        {
            playerBody.MovePosition(transform.position + (-cameraBase.transform.forward * movementSpeed * Time.deltaTime));
        }

        if (Input.GetKey(KeyCode.D))
        {
            playerBody.MovePosition(transform.position + (cameraBase.transform.right * movementSpeed * Time.deltaTime));
        }
        if (Input.GetKey(KeyCode.A))
        {
            playerBody.MovePosition(transform.position + (-cameraBase.transform.right * movementSpeed * Time.deltaTime));
        }
        */

        playerBody.velocity = actualMotion;

    }

    private bool isGrounded()
    {
        return Physics.Raycast(transform.position, -Vector3.up, distanceToGround + 0.01f);
    }
}