The.

generics/src/generics/Main.java

@@ -174,8 +174,6 @@ interface ILo<A> {
     // Find the largest from the evaluator.
     A argmax(IEvaluator<A> eval);
     A argmaxHelper(IEvaluator<A> eval, A prev, Integer prevVal);
-    // Skip this element of the list.
-    ILo<A> skip();
     // Sort the list with the comparator.
     ILo<A> sort(IComparator<A> comp);
     ILo<A> sortHelper(IComparator<A> comp, ILo<A> sorted);
@@ -207,11 +205,7 @@ class Cons<A> implements ILo<A> {
 
         return prevVal >= nowVal
             ? this.rest.argmaxHelper(eval, prev, prevVal)
-            : this.rest.skip().argmaxHelper(eval, now, nowVal);
-    }
-
-    public ILo<A> skip() {
-        return this.rest;
+            : this.rest.argmaxHelper(eval, now, nowVal);
     }
 
     public ILo<A> sort(IComparator<A> comp) {
@@ -246,10 +240,6 @@ class Mt<A> implements ILo<A> {
         return prev;
     }
 
-    public ILo<A> skip() {
-        return this;
-    }
-
     public ILo<A> sort(IComparator<A> comp) {
         return this;
     }

mastermind/src/mastermind/Main.java

@@ -67,7 +67,34 @@ class Examples {
 
     Feedback exampleFeedback = new Feedback(2, 2);
 
-    Game exampleGame = new Game();
+    Game exampleGame = new Game(
+        new GameConf(
+            true,
+            6,
+            4,
+            new ConsDot(
+                redDot,
+                new ConsDot(greenDot, new ConsDot(blueDot, new MtDot()))
+            )
+        ),
+        new ConsDot(
+            redDot,
+            new ConsDot(
+                greenDot,
+                new ConsDot(
+                    blueDot,
+                    new ConsDot(
+                        greenDot,
+                        new ConsDot(redDot, new ConsDot(greenDot, new MtDot()))
+                    )
+                )
+            )
+        ),
+        4,
+        ConsPlaceholderGuess.mkN(4),
+        false,
+        false
+    );
 
     boolean testDrawMethods(Tester t) {
         // WorldImage incomplete = new IncompleteGuess(exampleDotsOne).draw();
@@ -364,9 +391,8 @@ class Game extends World {
             if (choice <= this.conf.options.len()) return this.addDot(
                     choice - 1
                 );
-        } else if (key.equals("backspace")) {
-            return this.dropDot();
-        }
+        } else if (key.equals("backspace")) return this.dropDot();
+        else if (key.equals("enter")) return this.commitGuess();
         return this;
     }
 
@@ -397,6 +423,17 @@ class Game extends World {
         );
     }
 
+    Game commitGuess() {
+        return new Game(
+            this.conf,
+            this.solution,
+            this.guessesLeft - 1,
+            this.guesses.commitIncomplete(this.conf.len, this.solution),
+            this.won,
+            this.done
+        );
+    }
+
     // Calculate the width of the window without drawing anything.
     int calcW() {
         return (
@@ -411,7 +448,7 @@ class Game extends World {
     int calcH() {
         return (
             ((this.conf.nguesses + 2) * Dot.r * 2) +
-            ((this.conf.nguesses) * Util.gapW)
+            ((this.conf.nguesses) * (Util.gapW + 2))
         );
     }
 
@@ -427,8 +464,8 @@ class Game extends World {
 
     // Draw the solution.
     WorldImage draw_sol() {
-        if (this.done) return this.draw_sol_rev();
-        else return this.draw_sol_hid();
+        /*if (this.done)*/return this.draw_sol_rev();
+        /*else return this.draw_sol_hid();*/
     }
 
     // Draw the revealed answer.
@@ -490,6 +527,12 @@ interface ILoGuess {
     WorldImage draw();
     ILoGuess addToIncomplete(Dot dot, int limit);
     ILoGuess dropFromIncomplete();
+    ILoGuess commitIncomplete(int limit, ILoDot solution);
+    ILoGuess commitIncompleteHelper(
+        int limit,
+        ILoDot solution,
+        boolean premoved
+    );
 }
 
 class ConsGuess implements ILoGuess {
@@ -513,6 +556,21 @@ class ConsGuess implements ILoGuess {
     public ILoGuess dropFromIncomplete() {
         return new ConsGuess(this.guess, this.nxt.dropFromIncomplete());
     }
+
+    public ILoGuess commitIncomplete(int limit, ILoDot solution) {
+        return this.commitIncompleteHelper(limit, solution, false);
+    }
+
+    public ILoGuess commitIncompleteHelper(
+        int limit,
+        ILoDot solution,
+        boolean premoved
+    ) {
+        return new ConsGuess(
+            this.guess,
+            this.nxt.commitIncompleteHelper(limit, solution, premoved)
+        );
+    }
 }
 
 class ConsIncompleteGuess implements ILoGuess {
@@ -542,6 +600,26 @@ class ConsIncompleteGuess implements ILoGuess {
             this.nxt
         );
     }
+
+    public ILoGuess commitIncomplete(int limit, ILoDot solution) {
+        return this.commitIncompleteHelper(limit, solution, false);
+    }
+
+    public ILoGuess commitIncompleteHelper(
+        int limit,
+        ILoDot solution,
+        boolean premoved
+    ) {
+        if (!premoved) throw new Error("Here");
+        if (this.guessSoFar.full(limit)) {
+            ILoDot guessDots = this.guessSoFar.guessSoFar;
+            Feedback feedback = guessDots.compare(solution);
+            return new ConsIncompleteGuess(
+                new IncompleteGuess(new MtDot()),
+                new ConsGuess(new Guess(guessDots, feedback), this.nxt)
+            );
+        } else return this;
+    }
 }
 
 // Placeholder for guesses yet to be guessed.
@@ -562,7 +640,7 @@ class ConsPlaceholderGuess implements ILoGuess {
 
     // Fill a list with n placeholders.
     static ILoGuess mkN(int n) {
-        if (n == 0) return new ConsIncompleteGuess(
+        if (n == 1) return new ConsIncompleteGuess(
             new IncompleteGuess(new MtDot()),
             new MtGuess()
         );
@@ -576,6 +654,25 @@ class ConsPlaceholderGuess implements ILoGuess {
     public ILoGuess dropFromIncomplete() {
         return new ConsPlaceholderGuess(this.nxt.dropFromIncomplete());
     }
+
+    public ILoGuess commitIncompleteHelper(
+        int limit,
+        ILoDot solution,
+        boolean premoved
+    ) {
+        if (!premoved) return this.nxt.commitIncompleteHelper(
+                limit,
+                solution,
+                true
+            );
+        else return new ConsPlaceholderGuess(
+            this.nxt.commitIncomplete(limit, solution)
+        );
+    }
+
+    public ILoGuess commitIncomplete(int limit, ILoDot solution) {
+        return this.commitIncompleteHelper(limit, solution, false);
+    }
 }
 
 class MtGuess implements ILoGuess {
@@ -591,6 +688,18 @@ class MtGuess implements ILoGuess {
     public ILoGuess dropFromIncomplete() {
         return this;
     }
+
+    public ILoGuess commitIncomplete(int limit, ILoDot solution) {
+        return this;
+    }
+
+    public ILoGuess commitIncompleteHelper(
+        int limit,
+        ILoDot solution,
+        boolean premoved
+    ) {
+        return this;
+    }
 }
 
 // A guess.
@@ -636,6 +745,11 @@ class IncompleteGuess {
         if (len == 0) return this;
         else return new IncompleteGuess(this.guessSoFar.remove(len - 1));
     }
+
+    // Is the guess full?
+    boolean full(int limit) {
+        return this.guessSoFar.len() == limit;
+    }
 }
 
 // Feedback for a guess.