public static TmxLayer LoadTmxLayer(this TmxLayer layer, TmxMap map, XElement xLayer, int width, int height)
{
layer.Map = map;
layer.Name = (string)xLayer.Attribute("name");
layer.Opacity = (float?)xLayer.Attribute("opacity") ?? 1.0f;
layer.Visible = (bool?)xLayer.Attribute("visible") ?? true;
layer.OffsetX = (float?)xLayer.Attribute("offsetx") ?? 0.0f;
layer.OffsetY = (float?)xLayer.Attribute("offsety") ?? 0.0f;
// TODO: does the width/height passed in ever differ from the TMX layer XML?
layer.Width = (int)xLayer.Attribute("width");
layer.Height = (int)xLayer.Attribute("height");
var xData = xLayer.Element("data");
var encoding = (string)xData.Attribute("encoding");
layer.Tiles = new TmxLayerTile[width * height];
if (encoding == "base64")
{
var decodedStream = new TmxBase64Data(xData);
var stream = decodedStream.Data;
var index = 0;
using (var br = new BinaryReader(stream))
{
for (var j = 0; j < height; j++)
{
for (var i = 0; i < width; i++)
{
var gid = br.ReadUInt32();
layer.Tiles[index++] = gid != 0 ? new TmxLayerTile(map, gid, i, j) : null;
}
}
}
}
else if (encoding == "csv")
{
var csvData = xData.Value;
int k = 0;
foreach (var s in csvData.Split(','))
{
var gid = uint.Parse(s.Trim());
var x = k % width;
var y = k / width;
layer.Tiles[k++] = gid != 0 ? new TmxLayerTile(map, gid, x, y) : null;
}
}
else if (encoding == null)
{
int k = 0;
foreach (var e in xData.Elements("tile"))
{
var gid = (uint?)e.Attribute("gid") ?? 0;
var x = k % width;
var y = k / width;
layer.Tiles[k++] = gid != 0 ? new TmxLayerTile(map, gid, x, y) : null;
}
}
else
{
throw new Exception("TmxLayer: Unknown encoding.");
}
layer.Properties = TiledMapLoader.ParsePropertyDict(xLayer.Element("properties"));
return(layer);
}
/// <summary>
/// parses all the layers in xEle putting them in the container
/// </summary>
public static void ParseLayers(object container, XElement xEle, TmxMap map, int width, int height, string tmxDirectory)
{
foreach (var e in xEle.Elements().Where(x => x.Name == "layer" || x.Name == "objectgroup" || x.Name == "imagelayer" || x.Name == "group"))
{
ITmxLayer layer;
switch (e.Name.LocalName)
{
case "layer":
var tileLayer = new TmxLayer().LoadTmxLayer(map, e, width, height);
layer = tileLayer;
if (container is TmxMap m)
{
m.TileLayers.Add(tileLayer);
}
else if (container is TmxGroup g)
{
g.TileLayers.Add(tileLayer);
}
break;
case "objectgroup":
var objectgroup = new TmxObjectGroup().LoadTmxObjectGroup(map, e);
layer = objectgroup;
if (container is TmxMap mm)
{
mm.ObjectGroups.Add(objectgroup);
}
else if (container is TmxGroup gg)
{
gg.ObjectGroups.Add(objectgroup);
}
break;
case "imagelayer":
var imagelayer = new TmxImageLayer().LoadTmxImageLayer(map, e, tmxDirectory);
layer = imagelayer;
if (container is TmxMap mmm)
{
mmm.ImageLayers.Add(imagelayer);
}
else if (container is TmxGroup ggg)
{
ggg.ImageLayers.Add(imagelayer);
}
break;
case "group":
var newGroup = new TmxGroup().LoadTmxGroup(map, e, width, height, tmxDirectory);
layer = newGroup;
if (container is TmxMap mmmm)
{
mmmm.Groups.Add(newGroup);
}
else if (container is TmxGroup gggg)
{
gggg.Groups.Add(newGroup);
}
break;
default:
throw new InvalidOperationException();
}
if (container is TmxMap mmmmm)
{
mmmmm.Layers.Add(layer);
}
else if (container is TmxGroup g)
{
g.Layers.Add(layer);
}
}
}
