read a .we minetest schema

- use ground has maze walls

java/org/artisanlogiciel/games/maze/LabyModel.java

@@ -35,6 +35,8 @@ public class LabyModel implements WallsProvider {
     public final static short RIGHT = Brick.RIGHT << FLAGLENGTH | DIRECTION | HORIZONTAL | POSITIVE;
     public final static short UP = Brick.UP << FLAGLENGTH | DIRECTION | VERTICAL | NEGATIVE;
 
+    public final static short EMPTY = LEFT | DOWN | RIGHT | UP ;
+
     // flag when a wall should be open to access this for entry
     public final static short ENTRY = Brick.ENTRY << FLAGLENGTH;
     // flag when a wall should be open to access this for exit
@@ -100,7 +102,7 @@ public class LabyModel implements WallsProvider {
     /**
      * construct LabyModel from an InputStream, yet only "raw" is supported
      **/
-    public LabyModel(int width, int heigh, short [][] t) {
+    public LabyModel(int width, int height, short [][] t) {
         random = null;
         this.width = width;
         this.height = height;