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using System;
using System.Collections.Generic;
using System.Linq;
using Microsoft.Xna.Framework;
using Microsoft.Xna.Framework.Content;
using Microsoft.Xna.Framework.Graphics;
using MonoGame.Extended.Content;
namespace MonoGame.Extended.Tiled
{
public class TiledMapReader : ContentTypeReader<TiledMap>
{
protected override TiledMap Read(ContentReader reader, TiledMap existingInstance)
{
if (existingInstance != null)
return existingInstance;
var map = ReadTiledMap(reader);
reader.ReadTiledMapProperties(map.Properties);
ReadTilesets(reader, map);
ReadLayers(reader, map);
return map;
}
private static TiledMap ReadTiledMap(ContentReader reader)
{
var name = reader.AssetName;
var type = reader.ReadString();
var width = reader.ReadInt32();
var height = reader.ReadInt32();
var tileWidth = reader.ReadInt32();
var tileHeight = reader.ReadInt32();
var backgroundColor = reader.ReadColor();
var renderOrder = (TiledMapTileDrawOrder)reader.ReadByte();
var orientation = (TiledMapOrientation)reader.ReadByte();
return new TiledMap(name, type, width, height, tileWidth, tileHeight, renderOrder, orientation, backgroundColor);
}
private static void ReadTilesets(ContentReader reader, TiledMap map)
{
var tilesetCount = reader.ReadInt32();
for (var i = 0; i < tilesetCount; i++)
{
var firstGlobalIdentifier = reader.ReadInt32();
var tileset = ReadTileset(reader, map);
map.AddTileset(tileset, firstGlobalIdentifier);
}
}
private static TiledMapTileset ReadTileset(ContentReader reader, TiledMap map)
{
var external = reader.ReadBoolean();
var tileset = external ? reader.ReadExternalReference<TiledMapTileset>() : TiledMapTilesetReader.ReadTileset(reader);
return tileset;
}
private static void ReadLayers(ContentReader reader, TiledMap map)
{
foreach (var layer in ReadGroup(reader, map))
map.AddLayer(layer);
}
private static List<TiledMapLayer> ReadGroup(ContentReader reader, TiledMap map)
{
var layerCount = reader.ReadInt32();
var value = new List<TiledMapLayer>(layerCount);
for (var i = 0; i < layerCount; i++)
value.Add(ReadLayer(reader, map));
return value;
}
private static TiledMapLayer ReadLayer(ContentReader reader, TiledMap map)
{
var layerType = (TiledMapLayerType)reader.ReadByte();
var name = reader.ReadString();
var type = reader.ReadString();
var isVisible = reader.ReadBoolean();
var opacity = reader.ReadSingle();
var offsetX = reader.ReadSingle();
var offsetY = reader.ReadSingle();
var offset = new Vector2(offsetX, offsetY);
var parallaxX = reader.ReadSingle();
var parallaxY = reader.ReadSingle();
var parallaxFactor = new Vector2(parallaxX, parallaxY);
var properties = new TiledMapProperties();
reader.ReadTiledMapProperties(properties);
TiledMapLayer layer;
switch (layerType)
{
case TiledMapLayerType.ImageLayer:
layer = ReadImageLayer(reader, name, type, offset, parallaxFactor, opacity, isVisible);
break;
case TiledMapLayerType.TileLayer:
layer = ReadTileLayer(reader, name, type, offset, parallaxFactor, opacity, isVisible, map);
break;
case TiledMapLayerType.ObjectLayer:
layer = ReadObjectLayer(reader, name, type, offset, parallaxFactor, opacity, isVisible, map);
break;
case TiledMapLayerType.GroupLayer:
layer = new TiledMapGroupLayer(name, type, ReadGroup(reader, map), offset, parallaxFactor, opacity, isVisible);
break;
default:
throw new ArgumentOutOfRangeException();
}
foreach (var property in properties)
layer.Properties.Add(property.Key, property.Value);
return layer;
}
private static TiledMapLayer ReadObjectLayer(ContentReader reader, string name, string type, Vector2 offset, Vector2 parallaxFactor, float opacity, bool isVisible, TiledMap map)
{
var color = reader.ReadColor();
var drawOrder = (TiledMapObjectDrawOrder)reader.ReadByte();
var objectCount = reader.ReadInt32();
var objects = new TiledMapObject[objectCount];
for (var i = 0; i < objectCount; i++)
objects[i] = ReadTiledMapObject(reader, map);
return new TiledMapObjectLayer(name, type, objects, color, drawOrder, offset, parallaxFactor, opacity, isVisible);
}
private static TiledMapObject ReadTiledMapObject(ContentReader reader, TiledMap map)
{
var objectType = (TiledMapObjectType)reader.ReadByte();
var identifier = reader.ReadInt32();
var name = reader.ReadString();
var type = reader.ReadString();
var position = new Vector2(reader.ReadSingle(), reader.ReadSingle());
var width = reader.ReadSingle();
var height = reader.ReadSingle();
var size = new Size2(width, height);
var rotation = reader.ReadSingle();
var isVisible = reader.ReadBoolean();
var properties = new TiledMapProperties();
const float opacity = 1.0f;
reader.ReadTiledMapProperties(properties);
TiledMapObject mapObject;
switch (objectType)
{
case TiledMapObjectType.Rectangle:
mapObject = new TiledMapRectangleObject(identifier, name, size, position, rotation, opacity, isVisible, type);
break;
case TiledMapObjectType.Tile:
var globalTileIdentifierWithFlags = reader.ReadUInt32();
var tile = new TiledMapTile(globalTileIdentifierWithFlags, (ushort)position.X, (ushort)position.Y);
var tileset = map.GetTilesetByTileGlobalIdentifier(tile.GlobalIdentifier);
var localTileIdentifier = tile.GlobalIdentifier - map.GetTilesetFirstGlobalIdentifier(tileset);
var tilesetTile = tileset.Tiles.FirstOrDefault(x => x.LocalTileIdentifier == localTileIdentifier);
mapObject = new TiledMapTileObject(identifier, name, tileset, tilesetTile, size, position, rotation, opacity, isVisible, type);
break;
case TiledMapObjectType.Ellipse:
mapObject = new TiledMapEllipseObject(identifier, name, size, position, rotation, opacity, isVisible);
break;
case TiledMapObjectType.Polygon:
mapObject = new TiledMapPolygonObject(identifier, name, ReadPoints(reader), size, position, rotation, opacity, isVisible, type);
break;
case TiledMapObjectType.Polyline:
mapObject = new TiledMapPolylineObject(identifier, name, ReadPoints(reader), size, position, rotation, opacity, isVisible, type);
break;
default:
throw new ArgumentOutOfRangeException();
}
foreach (var property in properties)
mapObject.Properties.Add(property.Key, property.Value);
return mapObject;
}
private static Point2[] ReadPoints(ContentReader reader)
{
var pointCount = reader.ReadInt32();
var points = new Point2[pointCount];
for (var i = 0; i < pointCount; i++)
{
var x = reader.ReadSingle();
var y = reader.ReadSingle();
points[i] = new Point2(x, y);
}
return points;
}
private static TiledMapImageLayer ReadImageLayer(ContentReader reader, string name, string type, Vector2 offset, Vector2 parallaxFactor, float opacity, bool isVisible)
{
var texture = reader.ReadExternalReference<Texture2D>();
var x = reader.ReadSingle();
var y = reader.ReadSingle();
var position = new Vector2(x, y);
return new TiledMapImageLayer(name, type, texture, position, offset, parallaxFactor, opacity, isVisible);
}
private static TiledMapTileLayer ReadTileLayer(ContentReader reader, string name, string type, Vector2 offset, Vector2 parallaxFactor, float opacity, bool isVisible, TiledMap map)
{
var width = reader.ReadInt32();
var height = reader.ReadInt32();
var tileWidth = map.TileWidth;
var tileHeight = map.TileHeight;
var tileCount = reader.ReadInt32();
var layer = new TiledMapTileLayer(name, type, width, height, tileWidth, tileHeight, offset, parallaxFactor, opacity, isVisible);
for (var i = 0; i < tileCount; i++)
{
var globalTileIdentifierWithFlags = reader.ReadUInt32();
var x = reader.ReadUInt16();
var y = reader.ReadUInt16();
layer.Tiles[x + y * width] = new TiledMapTile(globalTileIdentifierWithFlags, x, y);
}
return layer;
}
}
}
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