wip

class.towers.php

@@ -1,6 +1,6 @@
 <?php
 
-class Towers{
+class Tower{
   private $tower0;
   private $tower1;
   private $tower2;
@@ -8,54 +8,26 @@ class Towers{
   
   /* on the hannoi tower
   */
-  public function __construct($discsCount,$towerArr){
+  public function __construct($discsCount,$towerArr = array()){
     $this->discsCount = $discsCount;
-  
-    //starting position for the tower
-    $this->tower0 = array();
-    for ( $i = $this->discsCount - 1 ;$i > -1 ; $i++ ){
-      $this->tower0[] = $i;
-    }
-    $this->tower1 = array();
-    $this->tower2 = array();
-  }
-  
-  
-  public function move_disc($from,$to){
-    //checks for the hanois rules
-    if(
-      ($from == $to)
-      ||(!in_array($from,array(0,1,2)))
-      ||(!in_array($to,array(0,1,2)))
-      ){
-      return false;
-    }
-    $fromTower = "tower".$from;
-    $toTower = "tower".$to;
-    
-    //the disc must be putted on a bigger one
-    if((empty($this->$fromTower)) || (end($this->$toTower) < end($this->$fromTower))){
-      return false;
-    }
-    
-    //move the disc:
-    $this->$toTower[] = end($this->$fromTower);
-    array_pop($this->$fromTower);
-    
-    return true;
-  }
-  
-  private function check_if_move_is_available($from,$to){
-    $fromTower = "tower".$from;
-    $toTower = "tower".$to;
-    if(($from == $to) || (empty($this->$fromTower)) || (end($this->$toTower) < end($this->$fromTower))){
-      return false;
+    if(empty($towerArr)){
+
+        //starting position for the tower
+        $this->tower0 = array();
+        for ( $i = $this->discsCount - 1 ;$i > -1 ; $i-- ){
+        $this->tower0[] = $i;
+        }
+        $this->tower1 = array();
+        $this->tower2 = array();
+    }else{    
+        $this->tower0 = $towerArr[0];
+        $this->tower1 = $towerArr[1];
+        $this->tower2 = $towerArr[2];
     }
-    return true;
   }
   
   public function __toString(){
-      return json_encode($this->get_tower_array();
+      return json_encode($this->get_tower_array());
   }
 
   
@@ -78,16 +50,30 @@ class Towers{
     return $movesAvailables;
   }
   
-  public function get_tower_array(){
+  private function get_tower_array(){
     return array(
       $this->tower0,
       $this->tower1,
       $this->tower2
     );
   }
+  private function check_if_move_is_available(Move $move){
+    $fromTower = "tower".$move->from;
+    $toTower = "tower".$move->to;
+    if(($from == $to) || (empty($this->$fromTower)) || (end($this->$toTower) < end($this->$fromTower))){
+      return false;
+    }
+    return true;
+  }
   
   public function add_move(Move $move){
-  
+    if($this->check_if_move_is_available($move->from,$move->to)){
+        $towerArr = $this->get_tower_array();
+        $towerArr[$move->to][] = end($towerArr[$move->from]);
+        array_pop($towerArr[$move->from]);
+        return new Tower( $this->discsCount, $towerArr );
+    }
+    return false;
   }
   
 }
@@ -100,8 +86,8 @@ class Move{
     private static $from2to0 = 4;
     private static $from2to1 = 5;
     
-    private $from;
-    private $to;
+    public $from;
+    public $to;
     
     private $value;
     
@@ -110,7 +96,7 @@ class Move{
     }
     
     private function  set_value($value){
-        $this->value = $value();
+        $this->value = $value;
         switch ($value){
             case Move::$from0to1:
                 $this->from = 0;
@@ -166,8 +152,37 @@ class Move{
                 break;
         }
     }
+  public static function make($str){
+        $move = new Move();
+        switch((string)$str){
+          case "0 to 1":
+            $move->set_value(Move::$from0to1);
+            break;
+          case "0 to 2":
+            $move->set_value(Move::$from0to2);
+            break;
+          case "1 to 0":
+            $move->set_value(Move::$from1to0);
+            break;
+          
+          case "1 to 2":
+            $move->set_value(Move::$from1to2);
+            break;
+        
+          case "2 to 0":
+            $move->set_value(Move::$from2to0);
+            break;
+          
+          case "2 to 1":
+            $move->set_value(Move::$from2to1);
+            break;
+          default:
+            return;
+            break;
+        }
+        return $move;
+  }
 }
-
 class Steps{
   /*
   *Memorise the differents towers configurations
@@ -177,7 +192,7 @@ class Steps{
     $this->steps = array();
   }
   
-  public function add_step(Towers $tower){
+  public function add_step(Tower $tower){
     //3 tours contenant au max n valeurs de 0à n-1*
     //a way to convert the tower to a simple integer (long)
     $arr = $tower->get_tower_array();

resolver.php

@@ -6,6 +6,8 @@ include("class.towers.php");
 
 
 $tower = new Tower($discCount);
+echo $tower;
+/*
 resolveHanoi($tower);
 
 function resolveHanoi($tower){
@@ -14,10 +16,11 @@ function resolveHanoi($tower){
     $availablesMoves = $tower->list_moves_availables();
     
     //don't take moves that will generate an ever used tower configuration
-    $useful_moves = array(); 
+    $useful_moves = array();
     foreach($availablesMoves as $move){
         
     }
 
 
 }
+*/