Document Cardinal and Color enumerations and Coordinate class files

src/Cardinal.java

@@ -6,19 +6,23 @@
  * operations on cardinals, such as rotation and inverse cardinals.
  */
 public enum Cardinal {
-    N  (0),
-    NE (1),
-    E  (2),
-    SE (3),
-    S  (4),
-    SW (5),
-    W  (6),
-    NW (7);
+    N  (0), /* North or up */
+    NE (1), /* North-East */
+    E  (2), /* East or right */
+    SE (3), /* South-East */
+    S  (4), /* South or down */
+    SW (5), /* South-West */
+    W  (6), /* West or left */
+    NW (7); /* North-West */
 
     /** Integer representation of the cardinal (starting at 0 for North) */
     private final int value;
 
-    /** Private constructor for the enumeration */
+    /** Private constructor for the enumeration 
+     * 
+     * @param value the integer value associated with the cardinal direction
+     *              (0 for North, 1 for North-East, etc.)
+     */
     private Cardinal(int value) {
         this.value = value;
     }
@@ -85,5 +89,5 @@ public enum Cardinal {
     }
 
     // North, South, East, West cardinals array
-    public static final Cardinal[] NS_EW = {N, S, E, W};
+    public static final Cardinal[] NS_EW = { N, S, E, W };
 }

src/Color.java

@@ -1,28 +1,31 @@
 
+/**
+ * Color enumeration representing the two colors of a gomoku board.
+ * 
+ * This enumeration represents the colors used on a gomoku board: WHITE and BLACK,
+ * as well as methods to manipulate and retrieve information about the colors.
+ * 
+ * Note that the two main colors are named arbitrarily (e.g., WHITE and BLACK),
+ * only to be used in the context of the game.
+ */
 public enum Color {
-    NIL(-1),
-    WHITE(0),
-    BLACK(1);
-
-    private final int val;
-
-    Color(int i) {
-        this.val = i;
-    }
-
-    public Color fromInt(int i) {
-        for (Color c : Color.values()) {
-            if (c.val == val) {
-                return c;
-            }
-        }
-        throw new IllegalArgumentException("Invalid value: " + this);
-
-    }
+    NIL,     /* No color */
+    WHITE,   /* White color */
+    BLACK;   /* Black color */
 
+    /**
+     * Returns the opposite color of the current color.
+     * 
+     * @return the opposite color (WHITE if BLACK, BLACK if WHITE, NIL if NIL)
+     */
     public Color inverse() {
-        if (this.val == -1)
-            throw new IllegalArgumentException("No inverse of NIL");
-        return fromInt((this.val + 1) % 2);
+        switch (this) {
+            case WHITE:
+                return BLACK;
+            case BLACK:
+                return WHITE;
+            default:
+                return NIL;
+        }
     }
 }

src/Coordinate.java

@@ -1,13 +1,25 @@
 
-
+/**
+ * Coordinate class to represent a point in 2D space.
+ * 
+ * This class is used to store the x and y integer components of a 2D coordinate.
+ * It provides a constructor to initialize the coordinate and
+ * public fields to access the x and y values.
+ */
 public class Coordinate {
+    /** The x component of the coordinate */
     public int x;
+    /** The y component of the coordinate */
     public int y;
 
-    public Coordinate(int x,int y){
+    /**
+     * Constructor to create a Coordinate object with specified x and y values.
+     *
+     * @param x The x component of the coordinate
+     * @param y The y component of the coordinate
+     */
+    public Coordinate(int x, int y) {
         this.x = x;
         this.y = y;
     }
-
-    
 }