/// <summary>
/// Places a new sprite on the map. The sprite's Advance() method is not executed
/// until next frame.
/// </summary>
/// <param name="sprite"></param>
/// <param name="x"></param>
/// <param name="y"></param>
/// <param name="layer"></param>
internal void Place(Sprite sprite, int x, int y, int layer)
{
layers[layer].objects[x, y].Add(sprite);
addList.Add(sprite);
sprite.UpdateCoords(x, y, layer);
}
/// <summary>
/// Moves a sprite from one place to another.
/// </summary>
/// <param name="sprite"></param>
/// <param name="fromX"></param>
/// <param name="fromY"></param>
/// <param name="fromLayer"></param>
/// <param name="toX"></param>
/// <param name="toY"></param>
/// <param name="toLayer"></param>
internal void Move(Sprite sprite, int fromX, int fromY, int fromLayer, int toX, int toY, int toLayer)
{
layers[fromLayer].objects[fromX, fromY].Remove(sprite);
if (layers[toLayer].ladderMove[toX, toY] != null) {
layers[toLayer].ladderMove[toX, toY].objects[toX, toY].Add(sprite);
sprite.UpdateCoords(toX, toY, Array.IndexOf(layers, layers[toLayer].ladderMove[toX, toY]));
}
else {
layers[toLayer].objects[toX, toY].Add(sprite);
sprite.UpdateCoords(toX, toY, toLayer);
}
}