// Crest Ocean System

// Copyright 2020 Wave Harmonic Ltd

using UnityEngine;

namespace Crest.Examples
{
    /// <summary>
    /// Places the game object on the water surface by moving it vertically.
    /// </summary>
    [AddComponentMenu(Crest.Internal.Constants.MENU_PREFIX_EXAMPLE + "Ocean Sample Height Demo")]
    public class OceanSampleHeightDemo : MonoBehaviour
    {
        /// <summary>
        /// The version of this asset. Can be used to migrate across versions. This value should
        /// only be changed when the editor upgrades the version.
        /// </summary>
        [SerializeField, HideInInspector]
#pragma warning disable 414
        int _version = 0;
#pragma warning restore 414

        SampleHeightHelper _sampleHeightHelper = new SampleHeightHelper();

        void Update()
        {
            // Assume a primitive like a sphere or box.
            var r = transform.lossyScale.magnitude;
            _sampleHeightHelper.Init(transform.position, 2f * r);

            if (_sampleHeightHelper.Sample(out var height))
            {
                var pos = transform.position;
                pos.y = height;
                transform.position = pos;
            }
        }
    }
}