/// <summary>
/// Parse a level created with Tiled and the objects within.
/// </summary>
/// <param name="xml">XML representation of level as written by Tiled editor.</param>
/// <returns>Level descriptor and descriptors of objects within the level.</returns>
private static Level ParseLevel(string xml)
{
XmlDocument doc = new XmlDocument();
doc.LoadXml(xml);
LevelProperties level = ParseLevelHeader(doc);
ReadOnlyCollection <LevelObject> levelObjects = ParseLevelTiles(doc, level);
return(new Level(level, levelObjects));
}
/// <summary>
/// Constructs a correct type of marker for the level.
/// </summary>
/// <param name="level">The level GameObject to assign the Marker to.</param>
/// <param name="properties">The <see cref="LevelProperties"/> object describing the level.</param>
/// <returns>The constructed marker.</returns>
private Marker ConstructMarker(GameObject level, LevelProperties properties)
{
Vector3 position = new Vector3(
(this.BoardSize.x - properties.Width) / 2,
0,
-(this.BoardSize.y - properties.Height) / 2);
Debug.Log("Level position: " + position);
GameObject levelMarker = new GameObject("LevelMarker");
this.AddBoard(levelMarker);
if (GameObject.Find("MetaWorld") == null)
{
RemoteMarker remoteMarker = levelMarker.AddComponent <RemoteMarker>();
remoteMarker.Id = LevelMarkerID;
remoteMarker.ScaleFactor = 1f;
GameObject.Find("RemoteController")
.GetComponent <RemoteMarkerHolder>()
.AddMarker(remoteMarker as RemoteMarker);
}
else
{
LocalMarker localMarker = levelMarker.AddComponent <LocalMarker>();
localMarker.Id = LevelMarkerID;
GameObject.Find("MetaWorld")
.GetComponent <LocalMarkerHolder>()
.AddMarker(localMarker as LocalMarker);
}
level.transform.parent = levelMarker.transform;
level.transform.localPosition = position;
Marker marker = levelMarker.GetComponent <Marker>();
// Simulate a PositionUpdate from the server.
PositionUpdate update = new PositionUpdate(UpdateType.UpdatePosition, Vector3.zero, 0, LevelMarkerID);
marker.RemotePosition = new MarkerPosition(update);
marker.RemotePosition.Scale = Vector3.one;
return(marker);
}
/// <summary>
/// Read level info from XML exported by Tiled.
/// </summary>
/// <param name="levelDoc">XML document of level.</param>
/// <returns>Info about level.</returns>
private static LevelProperties ParseLevelHeader(XmlDocument levelDoc)
{
LevelProperties properties = new LevelProperties();
// Find nodes containing relevant attributes
var mapNode = levelDoc.SelectSingleNode("map");
var imageNode = levelDoc.SelectSingleNode("//image");
var tilesetNode = levelDoc.SelectSingleNode("//tileset");
// Read data from them
properties.Width = int.Parse(mapNode.Attributes["width"].Value, CultureInfo.InvariantCulture);
properties.Height = int.Parse(mapNode.Attributes["height"].Value, CultureInfo.InvariantCulture);
properties.TileWidth = int.Parse(tilesetNode.Attributes["tilewidth"].Value, CultureInfo.InvariantCulture);
properties.TileHeight = int.Parse(tilesetNode.Attributes["tileheight"].Value, CultureInfo.InvariantCulture);
properties.HorizontalTiles = int.Parse(imageNode.Attributes["width"].Value, CultureInfo.InvariantCulture) / properties.TileWidth;
properties.VerticalTiles = int.Parse(imageNode.Attributes["height"].Value, CultureInfo.InvariantCulture) / properties.TileHeight;
return(properties);
}
/// <summary>
/// Constructs the game objects from objects within a level.
/// </summary>
/// <param name="level">Level descriptor.</param>
/// <param name="levelObjects">List of level objects.</param>
/// <returns>Parent GameObject that represents level.</returns>
private GameObject ConstructLevel(LevelProperties level, ReadOnlyCollection <LevelObject> levelObjects)
{
GameObject parent = new GameObject("Level");
// Instantiate prefab for every level object
foreach (LevelObject obj in levelObjects)
{
try
{
GameObject instance = InstantiateLevelObject(obj, this.objectPrefabs);
instance.transform.parent = parent.transform;
}
catch (KeyNotFoundException)
{
Debug.LogError("No prefab for " + obj.Type);
}
}
LinkPortals(levelObjects);
Marker marker = this.ConstructMarker(parent, level);
return(marker.gameObject);
}
/// <summary>
/// Initializes a new instance of the <see cref="Level"/> class.
/// </summary>
/// <param name="properties">Level properties.</param>
/// <param name="objects">Objects within level.</param>
public Level(LevelProperties properties, ReadOnlyCollection <LevelObject> objects)
{
this.Properties = properties;
this.Objects = objects;
}
/// <summary>
/// Load objects from tiles in level exported to XML.
/// </summary>
/// <param name="levelDoc">XML document of level.</param>
/// <param name="level">Level descriptor returned by ParseLevelHeader.</param>
/// <returns>List of objects placed within level.</returns>
private static ReadOnlyCollection <LevelObject> ParseLevelTiles(XmlDocument levelDoc, LevelProperties level)
{
int x = 0;
int y = 0;
var levelObjects = new List <LevelObject>();
foreach (XmlNode tileNode in levelDoc.SelectNodes("//tile"))
{
int gid = int.Parse(tileNode.Attributes["gid"].Value, CultureInfo.InvariantCulture);
// Bug in Tiled where it sometimes outputs tiles with gid 1 as 0
gid = Math.Max(1, gid);
// Determine rotation of object
int rotation = ((gid - 1) / level.HorizontalTiles) * 45;
// Determine type of object
int rawType = (gid - 1) % level.HorizontalTiles;
TileType type = (TileType)rawType;
// Determine position of object in world coordinates
Vector2 pos = new Vector2(x, y);
if (type != TileType.Nothing)
{
levelObjects.Add(new LevelObject(type, pos, rotation));
}
// UpdatePosition X, Y position
if (x + 1 == level.Width)
{
y++;
}
x = (x + 1) % level.Width;
}
return(levelObjects.AsReadOnly());
}
