// Automatic Conversion of TiledObjects in a .tmx file to TeeEngine Entities using C# Reflection.
private void ConvertMapObjects(TiledMap map)
{
foreach (TiledObjectLayer objectLayer in map.TiledObjectLayers)
{
foreach (TiledObject tiledObject in objectLayer.TiledObjects)
{
Entity entity = null;
// Special (Static) Tiled-Object when a Gid is specified.
if (tiledObject.Type == null && tiledObject.Gid != -1)
{
Tile sourceTile = map.Tiles[tiledObject.Gid];
entity = new Entity();
entity.Drawables.Add("standard", sourceTile);
entity.CurrentDrawableState = "standard";
entity.Pos = new Vector2(tiledObject.X, tiledObject.Y);
// Cater for any difference in origin from Tiled's default Draw Origin of (0,1).
entity.Pos.X += (sourceTile.Origin.X - 0.0f) * sourceTile.GetSourceRectangle(0).Width;
entity.Pos.Y += (sourceTile.Origin.Y - 1.0f) * sourceTile.GetSourceRectangle(0).Height;
}
else if (tiledObject.Type != null)
{
// Try and load Entity types from both the Assembly specified in MapProperties and within the GameEngine.
Assembly userAssembly = (map.HasProperty("Assembly")) ? Assembly.Load(map.GetProperty("Assembly")) : null;
Assembly engineAssembly = Assembly.GetExecutingAssembly();
// Try for user Assembly first - allows default Objects to be overriden if absoluately necessary.
object createdObject = null;
if (userAssembly != null)
{
createdObject = userAssembly.CreateInstance(tiledObject.Type);
}
if (createdObject == null)
{
createdObject = engineAssembly.CreateInstance(tiledObject.Type);
}
if (createdObject == null)
{
throw new ArgumentException(string.Format("'{0}' does not exist in any of the loaded Assemblies", tiledObject.Type));
}
if (createdObject is Entity)
{
// Convert to Entity object and assign values.
entity = (Entity)createdObject;
entity.Pos = new Vector2(tiledObject.X, tiledObject.Y);
// If the entity implements the ISizedEntity interface, apply Width and Height.
if (entity is ISizedEntity)
{
((ISizedEntity)entity).Width = tiledObject.Width;
((ISizedEntity)entity).Height = tiledObject.Height;
}
if (entity is IPolygonEntity)
{
((IPolygonEntity)entity).Points = tiledObject.Points;
}
foreach (string propertyKey in tiledObject.PropertyKeys)
{
// Ignore all properties starting with '.'
if (propertyKey.StartsWith("."))
{
continue;
}
// Bind Events.
if (propertyKey.StartsWith("$"))
{
string methodName = tiledObject.GetProperty(propertyKey);
string eventName = propertyKey.Substring(1, propertyKey.Length - 1);
MethodInfo methodInfo = MapScript.GetType().GetMethod(methodName);
EventInfo eventInfo = entity.GetType().GetEvent(eventName);
Delegate delegateMethod = Delegate.CreateDelegate(eventInfo.EventHandlerType, MapScript, methodInfo);
eventInfo.AddEventHandler(entity, delegateMethod);
}
else
{
// Bind Properties.
ReflectionExtensions.SmartSetProperty(entity, propertyKey, tiledObject.GetProperty(propertyKey));
}
}
}
else
{
throw new ArgumentException(string.Format("'{0}' is not an Entity object", tiledObject.Type));
}
}
if (entity != null)
{
this.AddEntity(tiledObject.Name, entity);
}
}
}
}
