// TODO: Support for zlib compression of tile data (Zlib.NET)
// http://stackoverflow.com/questions/6620655/compression-and-decompression-problem-with-zlib-net
// Reads and converts and .tmx file to a TiledMap object. Doing so does NOT load appropriate tile textures into memory.
// In order for textures to be loaded, the LoadContent(ContentManager) method must be called. This is usually automatically
// performed by the TeeEngine when calling its LoadMap(TiledMap) method. However, it may be called independently if needs be.
public static TiledMap LoadTmxFile(string file)
{
if (File.Exists(file))
{
// Find the working directory of this file so that any external files may use the same path.
int dirIndex = file.LastIndexOfAny(new char[] { '/', '\\' });
string workingDirectory = (dirIndex > 0) ? file.Substring(0, dirIndex) : "";
XmlDocument document = new XmlDocument();
document.Load(file);
XmlNode mapNode = document.SelectSingleNode("map");
TiledMap map = new TiledMap();
map.txWidth = XmlExtensions.GetAttributeValue<int>(mapNode, "width", -1, true);
map.txHeight = XmlExtensions.GetAttributeValue<int>(mapNode, "height", -1, true);
map.TileWidth = XmlExtensions.GetAttributeValue<int>(mapNode, "tilewidth", -1, true);
map.TileHeight = XmlExtensions.GetAttributeValue<int>(mapNode, "tileheight", -1, true);
map.TileDiagonalLength = Math.Sqrt(Math.Pow(map.TileWidth, 2) + Math.Pow(map.TileHeight, 2));
map.Background = ColorExtensions.ToColor(
XmlExtensions.GetAttributeValue(
mapNode, "backgroundcolor", "#000000"
)
);
map.LoadProperties(mapNode);
// OBJECT LAYERS
foreach (XmlNode objectLayerNode in mapNode.SelectNodes("objectgroup"))
{
TiledObjectLayer mapObjectLayer = new TiledObjectLayer();
mapObjectLayer.Width = XmlExtensions.GetAttributeValue<int>(objectLayerNode, "width", 1);
mapObjectLayer.Height = XmlExtensions.GetAttributeValue<int>(objectLayerNode, "height", 1);
mapObjectLayer.Name = XmlExtensions.GetAttributeValue(objectLayerNode, "name");
foreach (XmlNode objectNode in objectLayerNode.SelectNodes("object"))
{
TiledObject mapObject = new TiledObject();
mapObject.Name = XmlExtensions.GetAttributeValue(objectNode, "name");
mapObject.Type = XmlExtensions.GetAttributeValue(objectNode, "type");
mapObject.X = XmlExtensions.GetAttributeValue<int>(objectNode, "x", 0);
mapObject.Y = XmlExtensions.GetAttributeValue<int>(objectNode, "y", 0);
mapObject.Width = XmlExtensions.GetAttributeValue<int>(objectNode, "width", 0);
mapObject.Height = XmlExtensions.GetAttributeValue<int>(objectNode, "height", 0);
mapObject.Gid = XmlExtensions.GetAttributeValue<int>(objectNode, "gid", -1);
XmlNode polygonNode = objectNode.SelectSingleNode("polygon");
if (polygonNode != null)
mapObject.Points = ConvertToPointsList(XmlExtensions.GetAttributeValue(polygonNode, "points"));
mapObject.LoadProperties(objectNode);
mapObjectLayer.TiledObjects.Add(mapObject);
}
map.TiledObjectLayers.Add(mapObjectLayer);
}
// TILESETS
foreach (XmlNode tilesetNode in mapNode.SelectNodes("tileset"))
{
XmlNode actualTilesetNode;
int firstGID = XmlExtensions.GetAttributeValue<int>(tilesetNode, "firstgid", -1, true);
// If the tileset comes from an external .tsx file, load the node from that file.
if (XmlExtensions.HasAttribute(tilesetNode, "source"))
{
XmlDocument tilesetDocument = new XmlDocument();
tilesetDocument.Load(
string.Format("{0}/{1}",
workingDirectory, XmlExtensions.GetAttributeValue(tilesetNode, "source")));
actualTilesetNode = tilesetDocument.SelectSingleNode("tileset");
}
else
actualTilesetNode = tilesetNode;
string tilesetName = XmlExtensions.GetAttributeValue(actualTilesetNode, "name");
int tileHeight = XmlExtensions.GetAttributeValue<int>(actualTilesetNode, "tileheight", -1, true);
int tileWidth = XmlExtensions.GetAttributeValue<int>(actualTilesetNode, "tilewidth", -1, true);
TileSet tileset = new TileSet();
tileset.LoadProperties(actualTilesetNode);
tileset.Name = tilesetName;
tileset.TileWidth = tileWidth;
tileset.TileHeight = tileHeight;
tileset.ContentTexturePath = tileset.GetProperty("Content"); // Content Texture Path for XNA. REQUIRED.
map.TileSets.Add(tileset);
XmlNode imageNode = actualTilesetNode.SelectSingleNode("image");
int imageWidth = XmlExtensions.GetAttributeValue<int>(imageNode, "width", -1, true);
int imageHeight = XmlExtensions.GetAttributeValue<int>(imageNode, "height", -1, true);
string sourceTexturePath = XmlExtensions.GetAttributeValue<string>(imageNode, "source", "", true);
// PreBuild the tiles from the tileset information.
int i = 0;
while (true)
{
int tx = (i * tileWidth) % imageWidth;
int ty = tileHeight * ((i * tileWidth) / imageWidth);
// This check is performed in the case where image width is not
// an exact multiple of the tile width specified.
if (tx + tileWidth > imageWidth)
{
tx = 0;
ty += tileHeight;
}
// If we have exceeded the image height, we are done.
if (ty + tileHeight > imageHeight)
break;
Tile tile = new Tile();
tile.SourceTexturePath = sourceTexturePath; // Path to the actual file being referred.
tile.SourceRectangle = new Rectangle(tx, ty, tileWidth, tileHeight);
tile.TileGid = i + firstGID;
tile.TileId = i;
tile.TileSet = tileset;
map.Tiles.Add(tile.TileGid, tile);
tileset.Tiles.Add(i, tile);
i++;
}
// Add any individual properties to the tiles we have created
foreach (XmlNode tileNode in actualTilesetNode.SelectNodes("tile"))
{
int tileGid = firstGID + XmlExtensions.GetAttributeValue<int>(tileNode, "id", -1, true);
Tile tile = map.Tiles[tileGid];
tile.LoadProperties(tileNode);
// BUILT INS
// Adjust the draw origin based on the tile property 'DrawOrigin'
string[] drawOrigin = tile.GetProperty("DrawOrigin", "0, 1").Split(',');
tile.Origin = new Vector2(
(float)Convert.ToDouble(drawOrigin[0]),
(float)Convert.ToDouble(drawOrigin[1])
);
}
}
// TILE LAYERS
foreach (XmlNode layerNode in mapNode.SelectNodes("layer"))
{
int width = XmlExtensions.GetAttributeValue<int>(layerNode, "width", 0);
int height = XmlExtensions.GetAttributeValue<int>(layerNode, "height", 0);
TileLayer tileLayer = new TileLayer(width, height);
tileLayer.Name = XmlExtensions.GetAttributeValue(layerNode, "name");
tileLayer.LoadProperties(layerNode);
// SET BUILTIN PROPERTIES
tileLayer.Color = ColorExtensions.ToColor(
tileLayer.GetProperty<string>("Color", "#ffffff")
);
tileLayer.Opacity = tileLayer.GetProperty<float>("Opacity", 1.0f);
XmlNode dataNode = layerNode.SelectSingleNode("data");
string[] tokens = dataNode.InnerText.Split(
new char[] { '\n', ',', '\r' },
StringSplitOptions.RemoveEmptyEntries
);
for (int index = 0; index < tokens.Length; index++)
tileLayer[index] = Convert.ToInt32(tokens[index]);
map.TileLayers.Add(tileLayer);
}
return map;
}
else throw new IOException(string.Format("The Map File '{0}' does not exist.", file));
}