ForceMovement

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

public class PlayerMovement : MonoBehaviour
{
    //this is for the SphereCast it will create a sphere under the player to check if it touches anything 
    public LayerMask groundedLayerMask;
    //Checks if the player is on the ground or not
    public bool IsGrounded;
    public float walkingSpeed = 10f;
    public float runningSpeed = 15f;
    private float moveNS;
    private float moveEW;

    //takes the rigid component of an object
    public Rigidbody rb;
    public float jumpForce = 250f;

    public int airJump;

  
    


    // Start is called before the first frame update
    void Start()
    {

    }

    // Update is called once per frame
    void Update()
    {
        //the input value of the x and z axises
        moveNS = Input.GetAxisRaw("Horizontal");
        moveEW = Input.GetAxisRaw("Vertical");

        if(IsGrounded)
        {
            airJump = 1;
        }

    }

    //Called every physics update
    private void FixedUpdate()
    {
        //checks whether the gameobject is grounded or not
        IsGrounded = Grounded();
        //activates movement
        Movement();
    }

    public void Movement()
    {

        //changes the vectors from -1 -- 1 with .normalized
        Vector3 movement = new Vector3(moveNS, 0f, moveEW).normalized;

        jump();


        //Checks whether the object is grounded and if no inputs are given
        if ((IsGrounded && !Input.GetButton("Vertical") && !Input.GetButton("Horizontal") && !Input.GetButton("Jump")) || (Input.GetKey(KeyCode.W) && Input.GetKey(KeyCode.S) || (Input.GetKey(KeyCode.A) && Input.GetKey(KeyCode.D))))
        {

            rb.velocity = Vector3.zero;
        }

        //Checks whether the object is grounded and if any inputs are given
        else if ((Input.GetButton("Vertical") || Input.GetButton("Horizontal")) && Input.GetKey(KeyCode.LeftShift))
        {
            //Removes any stopping forces of the object
            
            //Adds force relative to the rotation of object
            rb.AddRelativeForce(movement * runningSpeed);


        }
    
        else if ((Input.GetButton("Vertical") || Input.GetButton("Horizontal")) && !Input.GetKey(KeyCode.LeftShift))
        {
            //Removes any stopping forces of the object
           
            //Adds force relative to the rotation of object
            rb.AddRelativeForce(movement * walkingSpeed);


        }

       

    }

    private void jump()
    {
        if(IsGrounded == true && Input.GetButtonDown("Jump"))
        {
            
            rb.AddForce(0f, jumpForce, 0f);

        }

        
        else if (IsGrounded == false &&  airJump == 1 && Input.GetButtonDown("Jump"))
        {
            
            rb.AddForce(0f, jumpForce, 0f);
            airJump = 0;
        }
    }


    private bool Grounded()
    {
        //Stores the value of what the raycast has hit
        RaycastHit hit;

        //if the return value is true then it returns true
        //basically creates a sphrere to check beneath it
        //transorm position takes in the position of set object
        //GetComponentInChildren takes the component we ask for of any children
        //0.55f and 0.49f are: one of them moves where the spheres is and the other sets the radius of the sphere outside of the hitbox which stops character from being grounded 1m high
        //then vector3.down checks downwards
        //and groundlayermask is the layer which is the floor
        return Physics.SphereCast(transform.position + GetComponentInChildren<CapsuleCollider>().center, 0.55f, Vector3.down, out hit, 0.49f, groundedLayerMask);
    }

}