Cannot cast Source from Type

Questions & Answers
1

Hey guys I’ve just run into an error I havn’t encountered before, I’ve been dabbling in Unity-c# for a little while so hopefully getting stuck on this isn’t too noobie.

What I’m trying to do is fill my ‘public static Tile_Levels tilesAll;’ with all children Tile_Levels that are children to the transform this script is attached to. The error is occurring on the foreach loop between Tile_Levels in transform.

void ProcessTiles(){
		
		tilesAll = new Tile_Levels[numberOfTiles];
		int TileNo = 0;

		foreach (Tile_Levels childtile in transform)
		{
				tilesAll[TileNo] = childtile;
			TileNo ++;
		}
		
		AssignMines ();
	}

Thankyou for your time, if I havn’t given enough information just ask for what you want!

2

It looks like you are trying to iterate (foreach) through the transform itself, which is NOT an array, list or other collection. That being said, it does CONTAIN a collection of children, an important distinction (IS vs HAS).

perhaps something like this is what you are looking for?..

...
Tile_Levels[] tileLevelChildrenArray=transform.GetComponentsInChildren< Tile_Levels >();
foreach(Tile_Levels childtile in tileLevelChildrenArray)
...

The GetComponentsInChildren will find all children that contain a component of type “Tile_Levels”. (I’m making the assumption this class is a MonoBehavior, a.k.a. “a component”.) The results will put into an array, which you CAN iterate through.

Edit: looking at your code a bit more, you may not even WANT a foreach loop after calling GetComponentsInChildren, since it looks like THAT is why you were looping… not sure though.

3

You already get an array from GetComponentsInChildren so you don’t need to create a new array.

void ProcessTiles()
{
    tilesAll = transform.GetComponentsInChildren<Tile_Levels>();

    for (int i = 0; i < tilesAll.Length; ++i)
    {
        tilesAll*.ID = i;*

}

AssignMines();
}