add Save Text support and rework package

- move maze within package maze

java/org/artisanlogiciel/games/maze/solve/DirectionPosition.java

@@ -0,0 +1,63 @@
+package org.artisanlogiciel.games.maze.solve;
+
+import org.artisanlogiciel.games.maze.LabyModel;
+import org.artisanlogiciel.games.maze.Position;
+
+/**
+ * DirectionPosition
+ * <p>
+ * record direction and position ( direction as defined in LabyModel ).
+ **/
+public class DirectionPosition {
+    private short direction;
+    private Position position;
+
+    // (direction,position)
+    public DirectionPosition(short d, Position p) {
+        direction = d;
+        position = p;
+    }
+
+    public short getDirection() {
+        return direction;
+    }
+
+    public void setDirection(short d) {
+        direction = d;
+    }
+
+    public Position getPosition() {
+        return position;
+    }
+
+    public String toString() {
+        if (position != null) {
+            return position.toString();
+        }
+        return "?";
+    }
+
+    // create a new DirectionPosition from this using one possible direction.
+    public DirectionPosition moveToAdjacentDirection() {
+        short pointingdirection = 0;
+        Position p = null;
+        if (LabyModel.isFlagSet(direction, LabyModel.RIGHT)) {
+            p = new Position(position.getX() + 1, position.getY());
+            pointingdirection |= LabyModel.LEFT;
+        } else if (LabyModel.isFlagSet(direction, LabyModel.LEFT)) {
+            p = new Position(position.getX() - 1, position.getY());
+            pointingdirection |= LabyModel.RIGHT;
+        } else if (LabyModel.isFlagSet(direction, LabyModel.UP)) {
+            p = new Position(position.getX(), position.getY() - 1);
+            pointingdirection |= LabyModel.DOWN;
+        } else if (LabyModel.isFlagSet(direction, LabyModel.DOWN)) {
+            p = new Position(position.getX(), position.getY() + 1);
+            pointingdirection |= LabyModel.UP;
+        } else {
+            p = position;
+        }
+
+        return new DirectionPosition((short) pointingdirection, p);
+    }
+
+}