Terrain.SampleHeight

Description

Samples the height at the given position defined in world space, relative to the terrain space.

    function LateUpdate () {
        transform.position.y = Terrain.activeTerrain.SampleHeight(transform.position);
    }

using UnityEngine;

public class ExampleScript : MonoBehaviour
{
    void LateUpdate()
    {
        Vector3 pos = transform.position;
        pos.y = Terrain.activeTerrain.SampleHeight(transform.position);
        transform.position = pos;
    }
}