Character move

character move

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

public class CharacterMove : MonoBehaviour {
    public Transform cameraTransform;

    public float moveSpeed = 10.0f;
    public float jumpSpeed = 10.0f;
    public float gravity = -20.0f;

    CharacterController characterController = null;
    float yVelocity = 0.0f;

	// Use this for initialization
	void Start () {
        characterController = GetComponent<CharacterController>();
	}

    // Update is called once per frame

    void Update()
    {
        float x = Input.GetAxis("Horizontal");
        float z = Input.GetAxis("Vertical");

        Vector3 moveDirection = new Vector3(x, 0, z);
        moveDirection = cameraTransform.TransformDirection(moveDirection); //월드좌표계로 변환하여 moveDirection으로 넣음.

        moveDirection *= moveSpeed;
        if (characterController.isGrounded)
        {
            yVelocity = 0.0f;
            if (Input.GetButtonDown("Jump")) //점프면
            {
                yVelocity = jumpSpeed; //점프 스피드를 y속도값에 넣음
            }
        }
        yVelocity += (gravity * Time.deltaTime); //중력에 의하여 점점 스피드가 줄어듬.
        moveDirection.y = yVelocity; //y값에 y속도값을 넣는다.

        characterController.Move(moveDirection * Time.deltaTime); //컨트롤러.Move를 통하여 움직인다.
    }
}