SAE/Assets/Script/Player/PlayerMovement0.cs

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

public class PlayerMovement0 : MonoBehaviour
{
    public CharacterController controller;

    public float speed = 12f;
    public float gravity = -9.81f;
    public float jumpForce = 1f;

    public Transform GroundCheck;
    public float groundDistance = 0.4f;
    public LayerMask groundMask;

    Vector3 velocity;
    public bool isWalking;
    public bool isGrounded;

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

        isWalking = TestWalking();

        Vector3 move = transform.right * x + transform.forward * z;

        controller.Move(move * speed * Time.deltaTime);

        // Jump
        if(Input.GetButtonDown("Jump") && isGrounded)
        {
           velocity.y = Mathf.Sqrt(jumpForce * -2f * gravity);
        }

        // Gravity
        isGrounded = Physics.CheckSphere(GroundCheck.position, groundDistance, groundMask);

        if (isGrounded && velocity.y < 0)
        {
            velocity.y = -2f;
        }

        velocity.y += gravity * Time.deltaTime;

        controller.Move(velocity * Time.deltaTime);
    }
    private bool TestWalking()
    {
        if (Input.GetAxis("Horizontal") > 0 || Input.GetAxis("Vertical") != 0)
        {
            return true;
        }
        else
        {
            return false;
        }
    }
}