fixed bugs

src/main/java/dotsandboxes/DotsAndBoxesGrid.java

@@ -118,12 +118,12 @@ public class DotsAndBoxesGrid {
             return false;
         }
 
-        // if (getHorizontal(x, y) &&
-        // getHorizontal(x, y + 1) &&
-        // getVertical(x, y) &&
-        // getVertical(x + 1, y)) {
-        // return true;
-        // }
+        if (getHorizontal(x, y) &&
+                getHorizontal(x, y + 1) &&
+                getVertical(x, y) &&
+                getVertical(x + 1, y)) {
+            return true;
+        }
 
         return false;
     }
@@ -160,9 +160,9 @@ public class DotsAndBoxesGrid {
         }
 
         // FIXME: You need to throw an exception if the line was already drawn.
-        // if (getHorizontal(x, y) == true) {
-        // throw new RuntimeException();
-        // }
+        if (getHorizontal(x, y) == true) {
+            throw new RuntimeException();
+        }
 
         this.horizontals[x][y] = true;
 
@@ -200,9 +200,9 @@ public class DotsAndBoxesGrid {
             throw new RuntimeException();
         }
         // You need to throw an exception if the line was already drawn.
-        // if (getVertical(x, y) == true) {
-        // throw new RuntimeException();
-        // }
+        if (getVertical(x, y) == true) {
+            throw new RuntimeException();
+        }
 
         this.verticals[x][y] = true;
         // Try to claim the north or south boxes