add path finder

src/main/java/io/maze/Maze.java

@@ -50,7 +50,6 @@ public void generate() {
 
         System.out.println("LEGEND: C- CANDIDATE, D- DECISION, R- RESULT, G- GO BACK");
         while (histories.size() > 0 && visited_cnt < m*n) {
-
             while (currentCell != null) {
                 currentCell = nextCell(currentCell);
                 if (currentCell != null) {

src/main/java/io/maze/cell/CellState.java

@@ -1,8 +1,5 @@
 package io.maze.cell;
 
-import io.maze.cell.Cell;
-import io.maze.doors.*;
-
 /**
  * Created with IntelliJ IDEA.
  * User: weli
@@ -14,6 +11,8 @@ public class CellState extends Cell {
     private boolean visited = false;
     private int x, y;
 
+    private boolean inPath = false;
+
     public boolean isVisited() {
         return visited;
     }
@@ -37,4 +36,12 @@ public int getY() {
     public void setY(int y) {
         this.y = y;
     }
+
+    public boolean isInPath() {
+        return inPath;
+    }
+
+    public void setInPath(boolean inPath) {
+        this.inPath = inPath;
+    }
 }

src/main/java/io/maze/finder/PathFinder.java

@@ -0,0 +1,15 @@
+package io.maze.finder;
+
+import io.maze.Maze;
+
+/**
+ * Created with IntelliJ IDEA.
+ * User: weinanli
+ * Date: 3/24/13
+ * Time: 1:01 PM
+ * To change this template use File | Settings | File Templates.
+ */
+public interface PathFinder {
+
+    public void solve(Maze maze);
+}