cnam-geometry-dash/Assets/Movement.cs

using UnityEngine;

public enum Speeds
{
    Slow = 0,
    Normal = 1,
    Fast = 2,
    Faster = 3,
    Fastest = 4
}

public class Movement : MonoBehaviour
{
    public Speeds CurrentSpeed;
    readonly float[] SpeedValues = { 8.6f, 10.4f, 12.96f, 15.6f, 19.27f };
    public Transform GroundCheckTransform;
    public float GroundCheckRadius;
    public LayerMask GroundMask;

    void Update()
    {
        transform.position += Time.deltaTime * SpeedValues[(int)CurrentSpeed] * Vector3.right;

        if (Input.GetMouseButton(0))
        {

        }
    }

    bool OnGround()
    {
        return Physics2D.OverlapCircle(GroundCheckTransform.position, GroundCheckRadius, GroundMask);
    }
}