gistfile1.txt

using UnityEngine;

class PlayerController : MonoBehaviour
{
    public float _moveDistance;
    public float _raycastDistance;

    public void LateUpdate()
    {
        if (Input.GetKeyUp(KeyCode.A))
            AttemptMove(Vector3.left);

        if (Input.GetKeyUp(KeyCode.S))
            AttemptMove(Vector3.back);

        if (Input.GetKeyUp(KeyCode.D))
            AttemptMove(Vector3.right);

        if (Input.GetKeyUp(KeyCode.W))
            AttemptMove(Vector3.forward);
    }

    void AttemptMove(Vector3 direction)
    {
        // Check if there's something in the specified direction.
        if (CanMove(direction))
        {
            Move(direction);
        }
        else
        {
            Debug.LogWarning("We cannae move!");
        }
    }

    void Move(Vector3 direction)
    {
        // Immediately move to the next position.
        transform.position += direction * _moveDistance;
    }

    bool CanMove(Vector3 direction)
    {
        RaycastHit hit;
        Physics.Raycast(transform.position, direction, out hit, _raycastDistance);
        Debug.Log(hit.collider);
        return hit.collider == null;
    }
}