Still new to Unity, so I'm sure this is a problem of my lack of knowing something obvious, but I can't find any concrete example of referencing a Tile that doesn't yet exist in game. I am trying to have my player lay different items depending on which key is pressed. I could paint all of the tiles I want into known locations in game. I could (I think) start with a_tile on coordinate (-2000, -2000) (or some place out of the way) and just build a palette of my tiles out there, then when I want one I could do

Vector3D aTileLoc = new Vector3D(-2000, 2000);
Tile aTile = tm.GetTile(aTileLoc);

And now I have a reference to the tile I want. But what I would like to do is conjure up a tile knowing that I want it to have sprite a_tile - is this possible? Or am I going about this in the wrong way?