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

public class PlayerScript : MonoBehaviour {



    //Movement
    CharacterController player;
    public GameObject FPSCam;
    public float Sensitivity = 5f;
    [SerializeField]
    private float SpeedFB = 350;
    [SerializeField]
    private float SpeedLR = 250;
    private bool hasJumped, isCrouched, isSprinting;
    private float moveFB, moveLR, rotX, rotY, verticalVelocity, jumpForce = 5f;



	 void Start ()
    {
        player = this.GetComponent<CharacterController>();
        Cursor.lockState = CursorLockMode.Locked;

        SpeedFB = 350;
        SpeedLR = 250;
	}


	private void Update ()
    {
        Movement();
        Sprint();
        Jump();
        Crouch();
        ApplyGravity();
	}


    private void Movement ()
    {
        moveFB = Input.GetAxis("Vertical") * SpeedFB * Time.deltaTime;
        moveLR = Input.GetAxis("Horizontal") * SpeedLR * Time.deltaTime;
        rotX = Input.GetAxis("Mouse X") * Sensitivity * Time.deltaTime;
        rotY = Input.GetAxis("Mouse Y") * Sensitivity * Time.deltaTime;

        Vector3 movement = new Vector3(moveLR, verticalVelocity, moveFB);
        movement = transform.rotation * movement;
        transform.Rotate(0, rotX, 0);
        FPSCam.transform.Rotate(-rotY, 0, 0);
        player.Move(movement * Time.deltaTime);
    }


    private void Sprint()
    {
        if (Input.GetButtonDown("Sprint"))
        {
            if (isCrouched)
            {
                player.height = 2f;
                isCrouched = false;
                SpeedFB = 350;
                SpeedLR = 250;
            }
            if(isSprinting == false)
            {
                isSprinting = true;
                player.height = 2f;
                SpeedFB = SpeedFB * 1.5f;
                SpeedLR = SpeedLR * 1.25f;
            }
        }
        if (Input.GetButtonUp("Sprint"))
        {
            if (isCrouched)
            {
                isSprinting = false;
                SpeedFB = 175f;
                SpeedLR = 125f;
            }
            else
            {
                isSprinting = false;
                SpeedFB = 350f;
                SpeedLR = 250f;
            }
        }
    }


    private void Crouch()
    {
        if (Input.GetButtonDown("Crouch"))
        {
            if(isCrouched == false)
            {
                isCrouched = true;
                isSprinting = false;
                player.height = player.height / 2;
                SpeedFB = 175;
                SpeedLR = 125;
            }
        }
        if (Input.GetButtonUp("Crouch"))
        {
            if (isSprinting)
            {
                player.height = 2f;
                isCrouched = false;
            }
            else
            {
                player.height = 2f;
                isCrouched = false;
                SpeedFB = 350;
                SpeedLR = 250;
            }
        }
    }


    private void Jump()
    {
        if (Input.GetButtonDown("Jump"))
        {
            hasJumped = true;
        }
    }





    private void ApplyGravity()
    {
        if (player.isGrounded)
        {
            if(hasJumped == false)
            {
                verticalVelocity = Physics.gravity.y;
            }
            else
            {
                verticalVelocity = jumpForce;
            }
        }
        else
        {
            verticalVelocity += Physics.gravity.y * Time.deltaTime;
            verticalVelocity = Mathf.Clamp(verticalVelocity, -12f, jumpForce);
            hasJumped = false;
        }
    }


}