difficulty AI changer and Setter

src/GomokuAI.java

@@ -24,7 +24,7 @@ public class GomokuAI extends Player {
     /** The random initialization */
     Random random = new Random();
     /** The difficulty of the GomokuAI */
-    int difficulty = 0;
+    private int difficulty = 0;
 
     // ------------------Methods--------------------------
     /**
@@ -94,5 +94,13 @@ public class GomokuAI extends Player {
 
         return map;
     }
+    // ------------------Getter--------------------------
+    public int GetDifficulty() {
+        return difficulty;
+    }
+    // ------------------Setter--------------------------
+    public void SetDifficulty(int difficulty) {
+        this.difficulty = difficulty;
+    }
 
 }