--- loncom/homework/response.pm	2004/12/07 16:19:37	1.110
+++ loncom/homework/response.pm	2005/02/24 00:36:10	1.114
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # various response type definitons response definition
 #
-# $Id: response.pm,v 1.110 2004/12/07 16:19:37 albertel Exp $
+# $Id: response.pm,v 1.114 2005/02/24 00:36:10 albertel Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -130,9 +130,10 @@ sub setrandomnumber {
 	    $rndmod+=&Apache::lonnet::numval2($Apache::inputtags::response[-1]);
 	}
     } else {
-	$rndmod=(&Apache::lonnet::numval3($Apache::inputtags::part) << 10);
+	my $shift=(4*scalar(@Apache::inputtags::responselist))%30;
+	$rndmod=(&Apache::lonnet::numval3($Apache::inputtags::part) << (($shift+15)%30));
 	if (defined($Apache::inputtags::response[-1])) {
-	    $rndmod+=&Apache::lonnet::numval3($Apache::inputtags::response[-1]);
+	    $rndmod+=(&Apache::lonnet::numval3($Apache::inputtags::response[-1]) << $shift );
 	}
     }
     if ($rndseed =~/([,:])/) {
@@ -150,7 +151,7 @@ sub setrandomnumber {
 	    $rndseed=(($rndseed<<32)>>32);
 	}
     }
-    &Apache::lonxml::debug("randseed $rndseed");
+    &Apache::lonxml::debug("randseed $rndmod $rndseed");
     &Apache::lonnet::setup_random_from_rndseed($rndseed);
     return '';
 }
@@ -430,13 +431,11 @@ sub end_responseparam {
 }
 
 sub start_parameter {
-    my $result = &start_responseparam(@_);
-    return $result;
+    return &start_responseparam(@_);
 }
 
 sub end_parameter {
-    my $result = &end_responseparam(@_);
-    return $result;
+    return &end_responseparam(@_);
 }
 
 sub reset_params {
@@ -714,6 +713,19 @@ sub get_response_param {
     return $parameter;
 }
 
+sub submitted {
+    my ($who)=@_;
+    
+    # when scatron grading any submission is a submission
+    if ($ENV{'form.submitted'} eq 'scantron') { return 1; }
+    # if the caller only cared if this was a scantron submission
+    if ($who eq 'scantron') { return 0; }
+    # if the Submit Answer button for this particular part was pressed
+    my $partid=$Apache::inputtags::part;
+    if (defined($ENV{'form.submit_'.$partid})) { return 1; }
+    # otherwise no submission occured
+    return 0;
+}
 1;
 __END__