BallBehavior.cs

using System;
using UnityEngine;
using UnityEngine.InputSystem;
using UnityEngine.Serialization;

public class BallBehavior : MonoBehaviour
{
    private PlayerInput _playerInput;
    private InputAction _horizontalAction;
    private float _horizontalAxis;
    public int moveForwardSpeed = 3;
    public float keyboardMoveSpeed = 15f;
    private int _isKeyboard = 0;
    private GameObject ball;
    private float ballRadius;
    private Vector3 ballBottomPos;
    private Boolean gameOver = false;
    
    // Ground Checks
    [Header("Ground Checks")]
    [SerializeField] private bool isGrounded;
    [SerializeField] private float groundCheckDistance = 0.17f;
    [SerializeField] private LayerMask groundMask = 0;

    void Awake()
    {
        _playerInput = GetComponent<PlayerInput>();
        _horizontalAction = _playerInput.currentActionMap.FindAction("Horizontal");
        _horizontalAction.performed += moveActionPerformed;
        _horizontalAction.canceled += _ => _horizontalAxis = 0;
    }

    void Start()
    {
        ball = GameObject.Find("Ball");
        ballRadius = ball.GetComponent<SphereCollider>().radius;
    }

    void Update()
    {
        if(!gameOver)
        {
            Vector3 position = transform.position;
            var deltaTime = Time.deltaTime;
            position += Vector3.forward * (moveForwardSpeed * deltaTime);
            position += Vector3.right * deltaTime * _horizontalAxis;
            transform.position = position;
        }
        
        ballBottomPos = ball.transform.position + Vector3.down * ballRadius;
        isGrounded = Physics.CheckSphere(ballBottomPos, groundCheckDistance, groundMask);
        
        Debug.Log(ball.transform.localPosition.y);
        if(ball.transform.position.y < 0.6f && !isGrounded)
        {
            Debug.Log("Game Over: " + ball.transform.position.y + " " + isGrounded);
            gameOver = true;
        }
    }

    private void moveActionPerformed(InputAction.CallbackContext context)
    {
        if (context.control.device.displayName.Contains("Keyboard"))
        {
            _isKeyboard = 1;
        }
        else
        {
            _isKeyboard = 0;
        }

        _horizontalAxis = context.ReadValue<float>() * (1 + keyboardMoveSpeed * _isKeyboard);
    }
    
    void OnDrawGizmosSelected()
    {
        // Dessine une boule rouge pour visualier goundCheckDistance
        Gizmos.color = Color.red;
        Gizmos.DrawSphere(ballBottomPos, groundCheckDistance);
    }
}