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

public class Movement : MonoBehaviour
{
    public float speed = 5.0f;
    public float turnSpeed; 
    public float sprintSpeed = 10.0f;
    public float jumpForce;
    public float gravity = 9.8f;
    public PickUpObject throwForce;

    public CharacterController controller;
    public Vector3 moveDirection = Vector3.zero;

    [Header("Keybinds")]
    public KeyCode forwardsKey = KeyCode.W;
    public KeyCode backwardsKey = KeyCode.S;
    public KeyCode leftKey = KeyCode.A;
    public KeyCode rightKey = KeyCode.D;
    public KeyCode sprintKey = KeyCode.LeftShift;
    public KeyCode jumpKey = KeyCode.Space;

    void Start()
    {
        controller = GetComponent<CharacterController>();
    }

    void Update()
    {
        float forwards  = Convert.ToSingle(Input.GetKey(forwardsKey));
        float backwards = Convert.ToSingle(Input.GetKey(backwardsKey));
        float left      = Convert.ToSingle(Input.GetKey(leftKey));
        float right     = Convert.ToSingle(Input.GetKey(rightKey));
        moveDirection   = new Vector3(right - left, 0, forwards - backwards);

        if (!controller.isGrounded) 
        {
            moveDirection.y -= gravity * Time.deltaTime;
            controller.Move(moveDirection * Time.deltaTime);
            return;
        }

        throwForce.throwForce = 4.0f;
        // Change the direction the player is facing based on the direction they are moving
        if (moveDirection != Vector3.zero)
        {
            Quaternion ToRotation = Quaternion.LookRotation(new Vector3(right - left, 0, forwards - backwards));
            throwForce.throwForce = 8.5f;
            transform.rotation = Quaternion.RotateTowards(transform.rotation, ToRotation, turnSpeed * Time.deltaTime);
        }
        
        if (Input.GetKey(sprintKey))
        {
            moveDirection *= sprintSpeed;
            jumpForce = 4.0f;
            if(moveDirection != Vector3.zero)
            {
                throwForce.throwForce = 20.0f;
            }
        }
        else
        {
            moveDirection *= speed;
            jumpForce = 2.5f;
        }

        if (Input.GetKeyDown(jumpKey))
        {
            moveDirection.y = jumpForce;
        }

        moveDirection.y -= gravity * Time.deltaTime;
        controller.Move(moveDirection * Time.deltaTime);
    }
}