private static void CreatePrefab(string path, MiniMap sourceMap, string spritePath)
{
GameObject go = new GameObject();
var minimap = go.AddComponent <MiniMap> ();
minimap.position = sourceMap.position;
minimap.direction = sourceMap.direction;
minimap.mapId = sourceMap.mapId;
var camera = go.AddComponent <Camera> ();
camera.CopyFrom(sourceMap.GetComponent <Camera>());
camera.cullingMask = 0;
camera.clearFlags = CameraClearFlags.Nothing;
var renderer = go.AddComponent <SpriteRenderer> ();
var sprite = AssetDatabase.LoadAssetAtPath <Sprite> (spritePath);
renderer.sprite = sprite;
PrefabUtility.CreatePrefab(path, go);
GameObject.DestroyImmediate(go);
}