Simple editor extensions for gameobjects.

GameObjectExtensions.cs

/// <summary>
/// GameObject manipulation extensions.
/// </summary>
public class GameObjectExtensions : MonoBehaviour {

  private static Transform selectedRoot = null;

  /// <summary>
  /// Flattens all children to parent level, can be an expensive as recursive.
  /// </summary>
  [MenuItem("GameObject/LittleLot/FlattenHierarchy", priority = 100)]
  public static void FlattenHierarchy() {

    Transform[] selectedTransforms = Selection.transforms;

    for (int i = 0; i < selectedTransforms.Length; i++) {
      selectedRoot = selectedTransforms[i].parent;
      FlattenChildren(selectedTransforms[i]);
      UnityEditor.EditorUtility.DisplayProgressBar("FlattenHierarchy",
          " Flattening: " + selectedRoot.name,
          i / selectedTransforms.Length);
    }
  }

  /// <summary>
  /// Removes All the mesh colliders from the selected object and its children.
  /// </summary>
  [MenuItem("GameObject/LittleLot/RemoveAllMeshColliders", priority = 100)]
  public static void RemoveAllColliders() {
    GameObject[] selectedGameObjects = Selection.gameObjects;
    MeshCollider collider = null;
    for (int i = 0; i < selectedGameObjects.Length; i++) {
      collider = null;
      collider = selectedGameObjects[i].GetComponent<MeshCollider>();
      if (collider) {
        DestroyImmediate(collider);
      }
    }
  }

  private static void FlattenChildren(Transform parent) {

    Transform child;
    while (parent.childCount > 0) {
      child = parent.GetChild(0);
      child.SetParent(selectedRoot, true);

      child.name = string.Format("{0}_{1}", parent.name, child.name);

      FlattenChildren(child);
    }
  }
}