using System.Collections.Generic;
using UnityEngine;

public class TerrainHeight : MonoBehaviour
{
	public GameObject TerrainParent;

	private List<Transform> terrains = new List<Transform>();

	private Rect[] terrainRects;

	public Transform cube;

	private void Awake()
	{
		Transform[] componentsInChildren = TerrainParent.GetComponentsInChildren<Transform>();
		for (int i = 0; i < componentsInChildren.Length; i++)
		{
			Terrain component = componentsInChildren[i].GetComponent<Terrain>();
			if ((bool)component)
			{
				terrains.Add(componentsInChildren[i]);
			}
		}
		terrainRects = new Rect[terrains.Count];
		for (int j = 0; j < terrains.Count; j++)
		{
			Terrain component = terrains[j].GetComponent<Terrain>();
			terrainRects[j].x = terrains[j].position.x;
			terrainRects[j].y = terrains[j].position.z;
			terrainRects[j].width = component.terrainData.size.x;
			terrainRects[j].height = component.terrainData.size.z;
		}
	}

	private Terrain GetTerrainTile(Vector3 position)
	{
		for (int i = 0; i < terrains.Count; i++)
		{
			if (terrainRects[i].Contains(new Vector2(position.x, position.z)))
			{
				return terrains[i].GetComponent<Terrain>();
			}
		}
		return null;
	}

	private float GetTerrainHeight(Vector3 position)
	{
		Terrain terrainTile = GetTerrainTile(position);
		if ((bool)terrainTile)
		{
			return terrainTile.SampleHeight(position);
		}
		return -1f;
	}

	private void Update()
	{
		float terrainHeight = GetTerrainHeight(cube.position);
		Debug.Log(string.Concat("Position: ", cube.position, " height: ", terrainHeight));
	}
}