Duplicating Terrain at run-time

Eric is correct, but I too enjoy being lazy.

I am setting up my height map and my splat map via code. Therefore, all I really need is a shallow copy of all the TerrainData properties that I setup in the designer.

I threw together this prototype and tested that it works.

To my fellow lazy coders, enjoy:

 // this is garbage test code, but you get the idea
 public class TerrainSpawner : MonoBehaviour {
 
     public GameObject terrainPrefab;
 
     // Use this for initialization
     IEnumerator Start () {
     
         GameObject terrainGameObject = (GameObject) Instantiate (terrainPrefab, new Vector3 (-1000.0F, 0.0F, -1000.0F), terrainPrefab.transform.rotation);
 
         yield return new WaitForSeconds (5.0F);  // waiting for 5 seconds so I can watch it spawn the 2nd terrain in the scene view while it's running
         
         Terrain terrain = terrainPrefab.GetComponent<Terrain> ();
         TerrainData terrainData = new TerrainData ();
         CopyFrom (terrainData, terrain.terrainData);  // copy the basic getable/setable properties
 
         GameObject newTerrainGameObject = (GameObject) Instantiate (terrainPrefab, new Vector3 (-3000.0F, 0.0F, -1000.0F), terrainPrefab.transform.rotation);
         Terrain newTerrain = newTerrainGameObject.GetComponent<Terrain> ();
         newTerrain.terrainData = terrainData;
     }
 
     // previously an extension method
     public static void CopyFrom<T1, T2>(T1 obj, T2 otherObject)
         where T1: class
         where T2: class
     {
         PropertyInfo[] srcFields = otherObject.GetType().GetProperties(
             BindingFlags.Instance | BindingFlags.Public | BindingFlags.GetProperty);
         
         PropertyInfo[] destFields = obj.GetType().GetProperties(
             BindingFlags.Instance | BindingFlags.Public | BindingFlags.SetProperty);
         
         foreach (var property in srcFields) {
             var dest = destFields.FirstOrDefault(x => x.Name == property.Name);
             if (dest != null && dest.CanWrite)
                 dest.SetValue(obj, property.GetValue(otherObject, null), null);
         }
     }
 }