libtiled-java: Add ROTATED_HEXAGONAL_120_FLAG (#4315)

Author: exoego

util/java/libtiled-java/src/main/java/org/mapeditor/core/TileLayer.java

@@ -559,4 +559,16 @@ public boolean isFlippedDiagonally(int x, int y) {
         return getBounds().contains(x, y) &&
                 (flags[y][x] & (int)TMXMapReader.FLIPPED_DIAGONALLY_FLAG) != 0;
     }
+
+    /**
+     * Check if tile at (x, y) is rotated 120 degrees (hexagonal maps)
+     *
+     * @param x Tile-space x coordinate
+     * @param y Tile-space y coordinate
+     * @return <code>true</code> if tile at (x, y) has hexagonal 120 rotation flag
+     */
+    public boolean isRotatedHexagonal120(int x, int y) {
+        return getBounds().contains(x, y) &&
+                (flags[y][x] & (int)TMXMapReader.ROTATED_HEXAGONAL_120_FLAG) != 0;
+    }
 }

util/java/libtiled-java/src/main/java/org/mapeditor/io/TMXMapReader.java

@@ -92,9 +92,10 @@ public class TMXMapReader {
     public static final long FLIPPED_HORIZONTALLY_FLAG =  0x0000000080000000L;
     public static final long FLIPPED_VERTICALLY_FLAG =    0x0000000040000000L;
     public static final long FLIPPED_DIAGONALLY_FLAG =    0x0000000020000000L;
+    public static final long ROTATED_HEXAGONAL_120_FLAG = 0x0000000010000000L;
 
     public static final long ALL_FLAGS =
-        FLIPPED_HORIZONTALLY_FLAG | FLIPPED_VERTICALLY_FLAG | FLIPPED_DIAGONALLY_FLAG;
+        FLIPPED_HORIZONTALLY_FLAG | FLIPPED_VERTICALLY_FLAG | FLIPPED_DIAGONALLY_FLAG | ROTATED_HEXAGONAL_120_FLAG;
 
     private Map map;
     private URL xmlPath;