Finished designing and refractering code for GUI.

src/main/java/Assignments/A1/Driver.java

@@ -5,20 +5,17 @@ package Assignments.A1;
 import Assignments.A1.models.Board;
 import Assignments.A1.models.BoardGenerator;
 import Assignments.A1.models.BoardNode;
-import Assignments.A1.solving_algorithms.AStar;
+import Assignments.A1.solving_algorithms.DFS;
-import Assignments.A1.solving_algorithms.BFS;
+import Assignments.A1.solving_algorithms.comparators.AStar;
-import Assignments.A1.solving_algorithms.UCS;
 
 import java.awt.*;
 import java.io.File;
-import java.io.FileNotFoundException;
 import java.io.FileWriter;
 import java.io.IOException;
 import java.net.URI;
 import java.net.URL;
 import java.util.ArrayList;
 import java.util.Date;
-import java.util.PriorityQueue;
 
 /**
  * Board will be used to save locations in a 2D array.
@@ -44,10 +41,10 @@ public class Driver {
         BoardNode node = null;
         for (int run = 0; run < runs; run++) {
             Board board = BoardGenerator.generateBoard();
-//            DFS solver = new DFS();
+            DFS solver = new DFS();
 //            BFS solver = new BFS();
 //            UCS solver = new UCS();
-            AStar solver = new AStar();
+//            AStar solver = new AStar();
             Date start = new Date();
             BoardNode result = solver.traverse(board);
             Date end = new Date();
@@ -125,7 +122,7 @@ public class Driver {
     }
 
     private static void writeToFile(String name, StringBuffer values) {
-        URL resourcePath = Driver.class.getResource("/A1/results/AStar.txt");
+        URL resourcePath = Driver.class.getResource("/A1/results/" + name + ".txt");
         URI resourceURI = URI.create(resourcePath.toString());
         File resource = new File(resourceURI.getPath());
 

src/main/java/Assignments/A1/models/Board.java

@@ -1,5 +1,8 @@
 package Assignments.A1.models;
 
+import Assignments.A1.models.helper.Move;
+import Assignments.A1.models.helper.Pair;
+
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.List;
@@ -236,17 +239,6 @@ public class Board {
      * Specifies a way of printing out the board with its current state.
      * @return the current state formatted.
      */
-//    @Override
-//    public String toString() {
-//        String result = "";
-//        for (int i = 0; i < 9; i++) {
-//            result += pieces[i] + " ";
-//            if ((i+1) % 3 == 0) {
-//                result += "\n";
-//            }
-//        }
-//        return result;
-//    }
     @Override
     public String toString() {
         String result = pieces[0] + " " + pieces[1] + " " + pieces[2] + "\n"

src/main/java/Assignments/A1/models/BoardGenerator.java

@@ -1,5 +1,7 @@
 package Assignments.A1.models;
 
+import Assignments.A1.models.helper.Move;
+
 import java.util.*;
 
 /**

src/main/java/Assignments/A1/models/BoardNode.java

@@ -36,7 +36,6 @@ public class BoardNode implements Comparable<BoardNode> {
         children.add(node);
     }
 
-
     private int getHeuristic() {
         int cost = 0;
         for (int i = 0; i < 9; i++) {

src/main/java/Assignments/A1/models/helper/Move.java

@@ -1,4 +1,6 @@
-package Assignments.A1.models;
+package Assignments.A1.models.helper;
+
+import Assignments.A1.models.Board;
 
 /**
  * Used to keep track of moves in either a stack or queues.

src/main/java/Assignments/A1/models/helper/Pair.java

@@ -1,4 +1,4 @@
-package Assignments.A1.models;
+package Assignments.A1.models.helper;
 
 /**
  * Used to pair two points for moves.

src/main/java/Assignments/A1/models/helper/Piece.java

@@ -1,4 +1,6 @@
-package Assignments.A1.models;
+package Assignments.A1.models.helper;
+
+import Assignments.A1.models.Board;
 
 /**
  * This class allows for abstraction and proper representation of a piece of the 8 puzzle.

src/main/java/Assignments/A1/models/helper/Solver.java

@@ -1,9 +1,11 @@
-package Assignments.A1.models;
+package Assignments.A1.models.helper;
 
 import Assignments.A1.models.Board;
 import Assignments.A1.models.BoardNode;
 
+import java.util.Comparator;
+
 public interface Solver {
 
-    BoardNode traverse(Board board);
+    BoardNode traverse(Board root);
 }

src/main/java/Assignments/A1/solving_algorithms/BFS.java

@@ -1,50 +0,0 @@
-package Assignments.A1.solving_algorithms;
-
-import Assignments.A1.models.Board;
-import Assignments.A1.models.BoardNode;
-import Assignments.A1.models.Move;
-import Assignments.A1.models.Solver;
-
-import java.util.Comparator;
-import java.util.HashSet;
-import java.util.List;
-import java.util.PriorityQueue;
-
-public class BFS implements Solver {
-
-    private final HashSet<Board> visited = new HashSet<>();
-    private static final Board solved = new Board();
-
-    public BoardNode traverse(Board root) {
-        PriorityQueue<BoardNode> boards = new PriorityQueue<>(new BFSPriority());
-        HashSet<Board> visited = new HashSet<>();
-        boards.add(new BoardNode(root, null));
-        BoardNode node = null;
-        Board current = new Board(root);
-        while (!current.equals(solved)) {
-            node = boards.poll();
-            current = node.board;
-            if (visited.contains(node.board)) {
-                continue;
-            }
-            visited.add(node.board);
-            List<Move> children = node.board.getMoves();
-            for (Move move : children) {
-                Board child = new Board(node.board);
-                child.swap(move);
-                BoardNode childNode = new BoardNode(child, node);
-                boards.add(childNode);
-                node.addChild(childNode);
-            }
-        }
-        return node;
-    }
-}
-
-class BFSPriority implements Comparator<BoardNode> {
-    @Override
-    public int compare(BoardNode o1, BoardNode o2) {
-        return Integer.compare(o1.heuristic, o2.heuristic);
-    }
-}
-

src/main/java/Assignments/A1/solving_algorithms/DFS.java

@@ -1,6 +1,8 @@
 package Assignments.A1.solving_algorithms;
 
 import Assignments.A1.models.*;
+import Assignments.A1.models.helper.Move;
+import Assignments.A1.models.helper.Solver;
 import Assignments.A1.resources.Parameters;
 
 import java.util.*;
@@ -16,7 +18,6 @@ public class DFS implements Solver {
         rootNode.setDepth(0);
         stack.push(rootNode);
 
-
         while (!stack.isEmpty()) {
             BoardNode current = stack.pop();
 

src/main/java/Assignments/A1/solving_algorithms/PriorityTraversal.java

@@ -2,24 +2,31 @@ package Assignments.A1.solving_algorithms;
 
 import Assignments.A1.models.Board;
 import Assignments.A1.models.BoardNode;
-import Assignments.A1.models.Move;
+import Assignments.A1.models.helper.Move;
-import Assignments.A1.models.Solver;
+import Assignments.A1.models.helper.Solver;
 
 import java.util.Comparator;
 import java.util.HashSet;
 import java.util.List;
 import java.util.PriorityQueue;
 
-public class AStar implements Solver {
+public class PriorityTraversal implements Solver {
+
     private final Board solved = new Board();
     private final HashSet<Board> visited = new HashSet<>();
 
+    private final Comparator<BoardNode> comparator;
+
+    public PriorityTraversal(Comparator<BoardNode> type) {
+        this.comparator = type;
+    }
+
     public BoardNode traverse(Board root) {
-        PriorityQueue<BoardNode> boards = new PriorityQueue<>(new AStarPriority());
+        PriorityQueue<BoardNode> boards = new PriorityQueue<>(comparator);
         boards.add(new BoardNode(root, null));
         BoardNode node = null;
         Board current = new Board(root);
-        while (!current.equals(solved)) {
+        while (!current.equals(solved) && !boards.isEmpty()) {
             node = boards.poll();
             current = node.board;
             if (visited.contains(node.board)) {
@@ -38,10 +45,3 @@ public class AStar implements Solver {
         return node;
     }
 }
-
-class AStarPriority implements Comparator<BoardNode> {
-    @Override
-    public int compare(BoardNode o1, BoardNode o2) {
-        return Integer.compare(o1.expected, o2.expected);
-    }
-}

src/main/java/Assignments/A1/solving_algorithms/UCS.java

@@ -1,47 +0,0 @@
-package Assignments.A1.solving_algorithms;
-
-import Assignments.A1.models.Board;
-import Assignments.A1.models.BoardNode;
-import Assignments.A1.models.Move;
-import Assignments.A1.models.Solver;
-
-import java.util.Comparator;
-import java.util.HashSet;
-import java.util.List;
-import java.util.PriorityQueue;
-
-public class UCS implements Solver {
-    private final Board solved = new Board();
-    private final HashSet<Board> visited = new HashSet<>();
-
-    public BoardNode traverse(Board root) {
-        PriorityQueue<BoardNode> boards = new PriorityQueue<>(new UCSPriority());
-        boards.add(new BoardNode(root, null));
-        BoardNode node = null;
-        Board current = new Board(root);
-        while (!current.equals(solved)) {
-            node = boards.poll();
-            current = node.board;
-            if (visited.contains(node.board)) {
-                continue;
-            }
-            visited.add(node.board);
-            List<Move> children = node.board.getMoves();
-            for (Move move : children) {
-                Board child = new Board(node.board);
-                child.swap(move);
-                BoardNode childNode = new BoardNode(child, node);
-                boards.add(childNode);
-                node.addChild(childNode);
-            }
-        }
-        return node;
-    }
-}
-
-class UCSPriority implements Comparator<BoardNode> {
-    @Override
-    public int compare(BoardNode o1, BoardNode o2) {
-        return Integer.compare(o1.cost, o2.cost);
-    }
-}

src/main/java/Assignments/A1/solving_algorithms/comparators/AStar.java

@@ -0,0 +1,13 @@
+package Assignments.A1.solving_algorithms.comparators;
+
+import Assignments.A1.models.Board;
+import Assignments.A1.models.BoardNode;
+
+import java.util.Comparator;
+
+public class AStar implements Comparator<BoardNode> {
+    @Override
+    public int compare(BoardNode o1, BoardNode o2) {
+        return Integer.compare(o1.expected, o2.expected);
+    }
+}

src/main/java/Assignments/A1/solving_algorithms/comparators/BFS.java

@@ -0,0 +1,13 @@
+package Assignments.A1.solving_algorithms.comparators;
+
+import Assignments.A1.models.BoardNode;
+
+import java.util.Comparator;
+
+public class BFS implements Comparator<BoardNode> {
+    @Override
+    public int compare(BoardNode o1, BoardNode o2) {
+        return Integer.compare(o1.heuristic, o2.heuristic);
+    }
+}
+

src/main/java/Assignments/A1/solving_algorithms/comparators/UCS.java

@@ -0,0 +1,12 @@
+package Assignments.A1.solving_algorithms.comparators;
+
+import Assignments.A1.models.BoardNode;
+
+import java.util.Comparator;
+
+public class UCS implements Comparator<BoardNode> {
+    @Override
+    public int compare(BoardNode o1, BoardNode o2) {
+        return Integer.compare(o1.cost, o2.cost);
+    }
+}

src/main/java/Assignments/A1/view/BoardViewCodeBehind.java

@@ -1,5 +1,6 @@
 package Assignments.A1.view;
 
+import Assignments.A1.models.Board;
 import Assignments.A1.models.BoardNode;
 import javafx.event.ActionEvent;
 import javafx.fxml.FXML;
@@ -70,6 +71,8 @@ public class BoardViewCodeBehind {
         this.expanded.selectedProperty().bindBidirectional(viewModel.expandedProperty());
         this.alg_speed.textProperty().bindBidirectional(viewModel.algSpeedProperty());
         this.disclaimer.visibleProperty().bindBidirectional(viewModel.disclaimerProperty());
+
+        this.current_board.textProperty().setValue(new Board().toString());
     }
 
     public void onGenerateBoard(ActionEvent actionEvent) {
@@ -86,6 +89,7 @@ public class BoardViewCodeBehind {
     public void onSolveButton(ActionEvent actionEvent) {
         viewModel.solveBoard();
         viewModel.updateDisplay();
+        this.spanning_tree.setRoot(new TreeItem<>());
         this.spanning_tree.setRoot(viewModel.getSolvedRootNode());
     }
 

src/main/java/Assignments/A1/view/MainViewModel.java

@@ -3,11 +3,12 @@ package Assignments.A1.view;
 import Assignments.A1.models.Board;
 import Assignments.A1.models.BoardGenerator;
 import Assignments.A1.models.BoardNode;
-import Assignments.A1.models.Solver;
+import Assignments.A1.models.helper.Solver;
-import Assignments.A1.solving_algorithms.AStar;
+import Assignments.A1.solving_algorithms.PriorityTraversal;
-import Assignments.A1.solving_algorithms.BFS;
+import Assignments.A1.solving_algorithms.comparators.AStar;
+import Assignments.A1.solving_algorithms.comparators.BFS;
 import Assignments.A1.solving_algorithms.DFS;
-import Assignments.A1.solving_algorithms.UCS;
+import Assignments.A1.solving_algorithms.comparators.UCS;
 import javafx.beans.property.*;
 import javafx.scene.control.TreeItem;
 
@@ -79,11 +80,11 @@ public class MainViewModel {
         if (DFS.getValue()) {
             solver = new DFS();
         } else if (UCS.getValue()) {
-            solver = new UCS();
+            solver = new PriorityTraversal(new UCS());
         } else if (BFS.getValue()) {
-            solver = new BFS();
+            solver = new PriorityTraversal(new BFS());
         } else if (AStar.getValue()) {
-            solver = new AStar();
+            solver = new PriorityTraversal(new AStar());
         }
         Date start = new Date();
         BoardNode solved = solver.traverse(this.current.board);
@@ -136,6 +137,7 @@ public class MainViewModel {
     }
 
     private TreeItem<BoardNode> rebuildTree(BoardNode root, boolean expanded) {
+        if (this.selectedAlg != null) {
             if (this.selectedAlg.equals("DFS")) {
                 Stack<BoardNode> generations = new Stack<>();
                 BoardNode temp = this.current;
@@ -163,6 +165,8 @@ public class MainViewModel {
                 return treeItem;
             }
         }
+        return new TreeItem<>();
+    }
 
 
     public boolean getExpanded() {