doc + getPlayableCells on gomokuBoard.

src/GomokuBoard.java

@@ -1,15 +1,32 @@
+import java.util.List;
+import java.util.ArrayList;
 
 public class GomokuBoard {
     private GomokuCell firstCell;
     private int boardWith;
     private int bordHeight;
 
+    //------------------Constructors--------------------------
+
+    /**
+     * This constructor take the width and the height to creat a board of gomoku.
+     * @param width Size of width.
+     * @param height Size of height.
+     */
     public GomokuBoard(int width, int height){
         this.firstCell = new GomokuCell(Color.NIL);
         this.boardWith = width;
         this.bordHeight = height;
     }
     
+    //------------------Gets--------------------------
+    
+    /**
+     * This method get a cell in specific position in the board.
+     * @param x The position x on the board.
+     * @param y The position y on the board.
+     * @return GomokuCell in the position.
+     */
     public GomokuCell get(int x, int y){
         int i = 0, j = 0;
         GomokuCell act = this.firstCell;
@@ -24,4 +41,25 @@ public class GomokuBoard {
         return act;
 
     }
+
+    /**
+     * This method return a list of playable cell.
+     * @return List of GomokuCell wich all is playable.
+     */
+
+    public List<GomokuCell> getPlayableCells(){
+        List<GomokuCell> output = new ArrayList<>();
+        GomokuCell act = null;
+        for (int i = 0; i < this.boardWith; i++) {
+            for (int j = 0; j < this.bordHeight; j++) {
+                act = this.get(i,j);
+                if (act.isPlayable()){
+                    output.add(act);
+                }
+            }
+        }
+
+        return output;
+
+    }
 }