//used to sort layers in Draw method
public int CompareDepth(BackgroundLayer layer1, BackgroundLayer layer2)
{
if (layer1.depth < layer2.depth)
return 1;
if (layer1.depth > layer2.depth)
return -1;
if (layer1.depth == layer2.depth)
return 0;
return 0;
}
public void AddLayer(Texture2D picture, float depth, float moveRate)
{
BackgroundLayer layer = new BackgroundLayer();
layer.picture = picture;
layer.depth = depth;
layer.moveRate = moveRate;
layer.pictureSize.X = picture.Width;
layer.pictureSize.Y = picture.Height;
layerList.Add(layer);
layerList.Sort(CompareDepth);
}
//creates a layer from the data passed in and adds it to the list
public void AddLayer(Texture2D picture, float depth, float moveRate)
{
BackgroundLayer layer = new BackgroundLayer();
layer.picture = picture;
//depth of 0 is closest, depth of 1 is furthest away
layer.depth = depth;
//if moveRate is positive, it will move right or down
//if its negative, it will move left or up
layer.moveRate = moveRate;
layer.pictureSize.X = picture.Width;
layer.pictureSize.Y = picture.Height;
layerList.Add(layer);
}
