public void Draw(SpriteBatch sb, Vector2 pos, Vector2 scale, Color colour, BlockStore blocks)
{
foreach (var kvp in this.tiles)
{
var p = kvp.Key - this.Origin;
var tile = kvp.Value;
blocks.DrawTile(sb, pos + new Vector2(p.X * blocks.TileSize * scale.X, p.Y * blocks.TileSize * scale.Y), tile, 0f, colour, scale);
}
}