private void DrawLowerTiles(RenderTarget window, int left, int top, int width, int height)
{
for (int x = left; x < width; x++)
{
for (int y = top; y < height; y++)
{
if (this._tiles[x, y].GetLayer(Layers.Ground) != null)
window.Draw(this._tiles[x, y].GetLayer(Layers.Ground).Sprite);
if (this._tiles[x, y].GetLayer(Layers.Mask) != null)
window.Draw(this._tiles[x, y].GetLayer(Layers.Mask).Sprite);
if (this._tiles[x, y].GetLayer(Layers.Mask2) != null)
window.Draw(this._tiles[x, y].GetLayer(Layers.Mask2).Sprite);
}
}
}