NEW FEATURE: reuse random numbers from old games

random numbers generated for old games are reused in case none
of the players were in that old game. Will be interesting how different
people play with the same hand ;)

3 files changed, 29 insertions, 3 deletions

diff --git a/db.php b/db.php
index 935c848..a444360 100644
--- a/db.php
+++ b/db.php
@@ -764,4 +764,19 @@ function DB_get_PREF($myid)
     return;
 }
 
+function DB_get_unused_randomnumbers($userstr)
+{
+  $queryresult = mysql_query("SELECT randomnumbers,Game.id FROM Game ".
+			     "  LEFT JOIN Hand ON Hand.game_id=Game.id ".
+			     "                 AND  user_id not in (".$userstr.")".
+			     "  GROUP BY  Game.id ".
+			     "  HAVING num=4");
+  
+  $r = mysql_fetch_array($queryresult,MYSQL_NUM);
+  if($r)
+    return $r[0];
+  else
+    return "";
+}
+
 ?>
\ No newline at end of file
diff --git a/functions.php b/functions.php
index 997ba43..4f33f1e 100644
--- a/functions.php
+++ b/functions.php
@@ -423,7 +423,7 @@ function card_value($card)
 }
 
 
-function  create_array_of_random_numbers()
+function  create_array_of_random_numbers($useridA,$useridB,$useridC,$useridD)
 {
   global $debug;
 
@@ -446,10 +446,21 @@ function  create_array_of_random_numbers()
     }
   else
     {
+      /* check if we can find a game were non of the player was involved and return 
+       * cards insted 
+       */
+      $userstr = implode(",",array($useridA,$useridB,$useridC,$useridD));
+      $randomnumbers = DB_get_unused_randomnumbers($userstr);
+      $randomnumbers = explode(":",$randomnumbers);
+      
+      if(sizeof($randomnumbers)==48)
+	return $randomnumbers;
+      
+      /* need to create new numbers */
       for($i=0;$i<48;$i++)
 	$r[$i]=$i+1;
       
-      shuffle($r);
+      shuffle($r); 
     };
 
   return $r;
diff --git a/index.php b/index.php
index a2cf35b..fa828da 100644
--- a/index.php
+++ b/index.php
@@ -72,7 +72,7 @@ if(myisset("new"))
     $useridD  = DB_get_userid_by_name($PlayerD);
     
     /* create random numbers */
-    $randomNR       = create_array_of_random_numbers();
+    $randomNR       = create_array_of_random_numbers($useridA,$useridB,$useridC,$useridD);
     $randomNRstring = join(":",$randomNR);
     
     /* get ruleset information or create new one */