Add tests for map with rotated/flipped tiles

DotTiled.Tests/Serialization/TestData.cs

@@ -36,6 +36,7 @@ public static partial class TestData
     ["Serialization/TestData/Map/map_with_custom_type_props/map-with-custom-type-props", (string f) => TestData.MapWithCustomTypeProps(), TestData.MapWithCustomTypePropsCustomTypeDefinitions()],
     ["Serialization/TestData/Map/map_with_embedded_tileset/map-with-embedded-tileset", (string f) => TestData.MapWithEmbeddedTileset(), Array.Empty<CustomTypeDefinition>()],
     ["Serialization/TestData/Map/map_with_external_tileset/map-with-external-tileset", (string f) => TestData.MapWithExternalTileset(f), Array.Empty<CustomTypeDefinition>()],
+    ["Serialization/TestData/Map/map_with_flippingflags/map-with-flippingflags", (string f) => TestData.MapWithFlippingFlags(f), Array.Empty<CustomTypeDefinition>()],
   ];
 
   private static CustomTypeDefinition[] typedefs = [

DotTiled.Tests/Serialization/TestData/Map/map-with-flippingflags/map-with-flippingflags.cs

@@ -0,0 +1,79 @@
+using System.Globalization;
+
+namespace DotTiled.Tests;
+
+public partial class TestData
+{
+  public static Map MapWithFlippingFlags(string fileExt) => new Map
+  {
+    Class = "",
+    Orientation = MapOrientation.Orthogonal,
+    Width = 5,
+    Height = 5,
+    TileWidth = 32,
+    TileHeight = 32,
+    Infinite = false,
+    HexSideLength = null,
+    StaggerAxis = null,
+    StaggerIndex = null,
+    ParallaxOriginX = 0,
+    ParallaxOriginY = 0,
+    RenderOrder = RenderOrder.RightDown,
+    CompressionLevel = -1,
+    BackgroundColor = Color.Parse("#00000000", CultureInfo.InvariantCulture),
+    Version = "1.10",
+    TiledVersion = "1.11.0",
+    NextLayerID = 2,
+    NextObjectID = 1,
+    Tilesets = [
+      new Tileset
+      {
+        Version = "1.10",
+        TiledVersion = "1.11.0",
+        FirstGID = 1,
+        Name = "tileset",
+        TileWidth = 32,
+        TileHeight = 32,
+        TileCount = 24,
+        Columns = 8,
+        Source = $"tileset.{(fileExt == "tmx" ? "tsx" : "tsj")}",
+        Image = new Image
+        {
+          Format = ImageFormat.Png,
+          Source = "tileset.png",
+          Width = 256,
+          Height = 96,
+        }
+      }
+    ],
+    Layers = [
+      new TileLayer
+      {
+        ID = 1,
+        Name = "Tile Layer 1",
+        Width = 5,
+        Height = 5,
+        Data = new Data
+        {
+          Encoding = DataEncoding.Csv,
+          Chunks = null,
+          Compression = null,
+          GlobalTileIDs = [
+            1, 1, 0, 0, 7,
+            1, 1, 0, 0, 7,
+            0, 0, 1, 0, 7,
+            0, 0, 0, 1, 7,
+            21, 21, 21, 21, 1
+          ],
+          FlippingFlags = [
+            FlippingFlags.None, FlippingFlags.FlippedDiagonally | FlippingFlags.FlippedHorizontally, FlippingFlags.None, FlippingFlags.None, FlippingFlags.FlippedVertically,
+            FlippingFlags.FlippedDiagonally | FlippingFlags.FlippedVertically, FlippingFlags.FlippedVertically | FlippingFlags.FlippedHorizontally, FlippingFlags.None, FlippingFlags.None, FlippingFlags.FlippedVertically,
+            FlippingFlags.None, FlippingFlags.None, FlippingFlags.None, FlippingFlags.None, FlippingFlags.FlippedVertically,
+            FlippingFlags.None, FlippingFlags.None, FlippingFlags.None, FlippingFlags.None, FlippingFlags.FlippedVertically,
+            FlippingFlags.FlippedHorizontally, FlippingFlags.FlippedHorizontally, FlippingFlags.FlippedHorizontally, FlippingFlags.FlippedHorizontally, FlippingFlags.None
+          ]
+        }
+      }
+    ]
+  };
+}

DotTiled.Tests/Serialization/TestData/Map/map-with-flippingflags/map-with-flippingflags.tmj

@@ -0,0 +1,36 @@
+{ "compressionlevel":-1,
+ "height":5,
+ "infinite":false,
+ "layers":[
+        {
+         "data":[1, 2684354561, 0, 0, 1073741831,
+            1610612737, 3221225473, 0, 0, 1073741831,
+            0, 0, 1, 0, 1073741831,
+            0, 0, 0, 1, 1073741831,
+            2147483669, 2147483669, 2147483669, 2147483669, 1],
+         "height":5,
+         "id":1,
+         "name":"Tile Layer 1",
+         "opacity":1,
+         "type":"tilelayer",
+         "visible":true,
+         "width":5,
+         "x":0,
+         "y":0
+        }],
+ "nextlayerid":2,
+ "nextobjectid":1,
+ "orientation":"orthogonal",
+ "renderorder":"right-down",
+ "tiledversion":"1.11.0",
+ "tileheight":32,
+ "tilesets":[
+        {
+         "firstgid":1,
+         "source":"tileset.tsj"
+        }],
+ "tilewidth":32,
+ "type":"map",
+ "version":"1.10",
+ "width":5
+}

DotTiled.Tests/Serialization/TestData/Map/map-with-flippingflags/map-with-flippingflags.tmx

@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<map version="1.10" tiledversion="1.11.0" orientation="orthogonal" renderorder="right-down" width="5" height="5" tilewidth="32" tileheight="32" infinite="0" nextlayerid="2" nextobjectid="1">
+ <tileset firstgid="1" source="tileset.tsx"/>
+ <layer id="1" name="Tile Layer 1" width="5" height="5">
+  <data encoding="csv">
+1,2684354561,0,0,1073741831,
+1610612737,3221225473,0,0,1073741831,
+0,0,1,0,1073741831,
+0,0,0,1,1073741831,
+2147483669,2147483669,2147483669,2147483669,1
+</data>
+ </layer>
+</map>

DotTiled.Tests/Serialization/TestData/Map/map-with-flippingflags/tileset.tsj

@@ -0,0 +1,14 @@
+{ "columns":8,
+ "image":"tileset.png",
+ "imageheight":96,
+ "imagewidth":256,
+ "margin":0,
+ "name":"tileset",
+ "spacing":0,
+ "tilecount":24,
+ "tiledversion":"1.11.0",
+ "tileheight":32,
+ "tilewidth":32,
+ "type":"tileset",
+ "version":"1.10"
+}

DotTiled.Tests/Serialization/TestData/Map/map-with-flippingflags/tileset.tsx

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<tileset version="1.10" tiledversion="1.11.0" name="tileset" tilewidth="32" tileheight="32" tilecount="24" columns="8">
+ <image source="tileset.png" width="256" height="96"/>
+</tileset>