Project-M/Assets/Synty/PolygonHorrorCarnival/Scripts/FerrisWheelController.cs

using UnityEngine;

public class FerrisWheelController : MonoBehaviour
{
    [Header("Ride Controls")]
    public float rotationSpeed = 15.0f;
    public float rockingSpeed = .2f;
    public float rockingAmplitude = 18f;

    public Transform[] chairs;
    public Transform[] wheelsForward;
    public Transform[] wheelsReverse;

    private float timeCounter = 0.0f;

    private void Update()
    {
        // Rotate the Ferris wheel
        transform.Rotate(Vector3.back * rotationSpeed * Time.deltaTime);


        //rotate top wheels forwards with rotation speed multiplier
        foreach (Transform wheelFwd in wheelsForward)
        {
            wheelFwd.Rotate(Vector3.forward * rotationSpeed * Time.deltaTime * 10);
        }

        ///rotate bottom wheels backwards with rotation speed multiplier
        foreach (Transform wheelRev in wheelsReverse)
        {
            wheelRev.Rotate(Vector3.back * rotationSpeed * Time.deltaTime * 10);
        }

        //chair rocking motion
        foreach (Transform chair in chairs)
        { 
            timeCounter += rockingSpeed * Time.deltaTime;
            // rotation speed added to reduce/add more motion depending on ferris wheel speed
            float rockingOffset = Mathf.Sin(timeCounter) * rockingAmplitude * (rotationSpeed/10);
            chair.localRotation = Quaternion.Euler(0, 0, rockingOffset);
        }
    }
}