Add expandable board mechanic, and add static array in Cardinal

src/Cardinal.java

@@ -83,4 +83,7 @@ public enum Cardinal {
     public Cardinal rotate90CCW() {
         return rotate(-2);
     }
+
+    // North, South, East, West cardinals array
+    public static final Cardinal[] NS_EW = {N, S, E, W};
 }

src/ConsoleRenderer.java

@@ -49,7 +49,7 @@ public class ConsoleRenderer extends GomokuRenderer {
             System.out.println(horizontalLine);
         }
         System.out.print("x");
-        for (int i = 0; i < height; i++) {
+        for (int i = 0; i < width; i++) {
             if(i<10) {
                 System.out.print(" "+i+"  ");
             } else {

src/GomokuGame.java

@@ -147,6 +147,14 @@ public class GomokuGame {
             while (currentPlay == null) {
                 currentPlay = this.play(this.currentPlayer);
             }
+            // Expand the board if one of the neighbours of the cell is null
+            // Only check for North, South, East and West neighbours
+            for (Cardinal cardinal : Cardinal.NS_EW) {
+                GomokuCell neighbour = currentPlay.getNeighbour(cardinal);
+                if (neighbour == null) {
+                    this.board.expandBoard(cardinal);
+                }
+            }
             System.out.println(board.countMax(board.countAlignedCells(currentPlay)));
             if (NB_CELL_PLAY <= board.countMax(board.countAlignedCells(currentPlay))) {
                 System.out.println("Le joueur " + this.currentPlayer + " a gagné !");