Movement_WASD.cs

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

public class Movement_WASD : MonoBehaviour
{

    private CharacterController character_Controller;

    private Vector3 move_Direction;

    public float speed = 5f;
    private float gravity = 20f;

    public float Jump_Force = 10f;
    private float vertical_Velocity;

    void Awake(){
        character_Controller = GetComponent<CharacterController>();
        
    }

    // Update is called once per frame
    void Update()
    {
       MoveThePlayer(); 
    }

    void MoveThePlayer(){

        move_Direction = new Vector3(Input.GetAxis(Axis.HORIZONTAL), 0f,
                                    Input.GetAxis(Axis.VERTICAL));

        move_Direction = transform.TransformDirection(move_Direction);
        move_Direction *= speed * Time.deltaTime;

        ApplyGravity();

        character_Controller.Move(move_Direction);


    }//MOvePlayer

    void ApplyGravity(){

        vertical_Velocity -= gravity * Time.deltaTime;

        //jump

        PlayerJump();

        move_Direction.y = vertical_Velocity * Time.deltaTime;

    }//apply gravity

    void PlayerJump(){

        if(character_Controller.isGrounded && Input.GetKeyDown(KeyCode.Space)) {

            vertical_Velocity = Jump_Force;

        }

    }


}   //class