- Updated the Node interface and its implementations to include a strength() function. This is a double value between 0 and 1 representing the percent activation.

- Updated the PlayerModel to fix a bug in the high score tracking.
- Created HighScoreDialog.java, which displays the high scores from a PlayerModel. In the future, it will have a "New Game" button so that it can be used to transition between games.

src/model/playerModel/Node.java

@@ -6,4 +6,5 @@ public interface Node {
 
 	void learn(boolean correct);
 
+	double strength();
 }

src/model/playerModel/PlayerModel.java

@@ -21,9 +21,18 @@ public class PlayerModel {
 
 	private int nextHighInGames = 0;
 
-	// One node for each tile.
-	private final SigmoidNode[] outputNode = new SigmoidNode[Board.NUM_COLS
-			* Board.NUM_ROWS];
+	// One node for each tile plus four for the colors to be selected.
+	// outputNode[0] is blue.
+	// outputNode[1] is green.
+	// outputNode[2] is red.
+	// outputNode[3] is yellow.
+	// outputNode[4] through outputNode[n] represent grid spaces. A true means
+	// that the player is predicted to place on that tile.
+	// They should be read from the top-left to bottom-right, across rows.
+	// Ideally, the network should return only one true between 0 and 3 and only
+	// one true between 4 and n, representing one color and the tile in which it
+	// should be placed.
+	private final SigmoidNode[] outputNode = new SigmoidNode[(Board.NUM_COLS * Board.NUM_ROWS) + 4];
 
 	public PlayerModel() {
 		for (int i = 0; i < highScore.length; i++) {
@@ -54,6 +63,10 @@ public class PlayerModel {
 		}
 	}
 
+	public int[] getHighScores() {
+		return highScore;
+	}
+
 	public boolean[] getPrediction(boolean[] input) {
 		if (input.length == inputNode.length) {
 			boolean[] prediction = new boolean[outputNode.length];
@@ -118,12 +131,11 @@ public class PlayerModel {
 		else {
 			loop: for (int i = 0; i < highScore.length; i++) {
 				if (score > highScore[i]) {
-					for (int j = i; j < highScore.length - 1; j++) {
+					for (int j = highScore.length - 2; j >= i; j--) {
 						highScore[j + 1] = highScore[j];
 					}
 
 					highScore[i] = score;
-
 					break loop;
 				}
 			}

src/model/playerModel/node/InputNode.java

@@ -19,4 +19,9 @@ public class InputNode implements Node {
 	public void setStimulation(boolean active) {
 		dendrite = active;
 	}
+
+	@Override
+	public double strength() {
+		return axon() ? 1 : 0;
+	}
 }

src/model/playerModel/node/SigmoidNode.java

@@ -4,7 +4,6 @@ import java.util.Hashtable;
 
 import model.playerModel.Node;
 
-
 public class SigmoidNode implements Node {
 
 	// Training rate.
@@ -23,14 +22,7 @@ public class SigmoidNode implements Node {
 
 	@Override
 	public boolean axon() {
-		double sum = 0;
-
-		for (Node n : dendrites.keySet()) {
-			sum += n.axon() ? dendrites.get(n) : 0;
-		}
-
-		return (activation(sum) > THRESHOLD);
-
+		return strength() > THRESHOLD;
 	}
 
 	@Override
@@ -44,6 +36,17 @@ public class SigmoidNode implements Node {
 		}
 	}
 
+	@Override
+	public double strength() {
+		double sum = 0;
+
+		for (Node n : dendrites.keySet()) {
+			sum += n.axon() ? dendrites.get(n) : 0;
+		}
+
+		return activation(sum);
+	}
+
 	private double activation(double sum) {
 		// Sigmoid function:
 		// 1/(1+(e^(-bt)))

src/view/HighScoreDialog.java

@@ -0,0 +1,69 @@
+package view;
+
+import javax.swing.BorderFactory;
+import javax.swing.JDialog;
+import javax.swing.JFrame;
+import javax.swing.JLabel;
+
+import model.playerModel.PlayerModel;
+
+public class HighScoreDialog extends JDialog {
+
+	/**
+	 * 
+	 */
+	private static final long serialVersionUID = 1L;
+
+	public static void main(String[] args) {
+		JFrame x = new JFrame();
+		x.setDefaultCloseOperation(EXIT_ON_CLOSE);
+		x.setVisible(true);
+
+		PlayerModel pm = new PlayerModel();
+		pm.logGame(100);
+		pm.logGame(90);
+		pm.logGame(80);
+		pm.logGame(70);
+		pm.logGame(60);
+		pm.logGame(50);
+		pm.logGame(40);
+		pm.logGame(30);
+		pm.logGame(20);
+		pm.logGame(10);
+		pm.logGame(98);
+		pm.logGame(105);
+
+		new HighScoreDialog(x, pm);
+	}
+
+	public HighScoreDialog(JFrame owner, PlayerModel pm) {
+		super(owner, "Game over!", true);
+
+		String text = "<html>";
+		text += "<b>Game Over!</b>";
+		text += "<br><br>";
+		text += "<em>High Scores:</em>";
+		text += "<br><ol>";
+
+		int[] highScores = pm.getHighScores();
+		loop: for (int i = 0; i < highScores.length; i++) {
+			if (highScores[i] == -1) {
+				break loop;
+			}
+
+			else {
+				text += "<li>" + highScores[i] + "</li>";
+			}
+		}
+
+		text += "</ol></html>";
+
+		JLabel label = new JLabel(text);
+		label.setBorder(BorderFactory.createEmptyBorder(10, 10, 10, 10));
+
+		this.add(label);
+		this.pack();
+		this.setResizable(false);
+		this.setVisible(true);
+	}
+}