Greetings Monks!

I have a problem that I need your help with.

The point of this is a little diddy that will create a random yet unique set of coordinates to place a specified character in a canvas. I cannot seem to get anything to get pushed into my array so I can compare the newly generated coordinate with values already used.

Any guidance will be greatly appreciated!

Thanks in advance!

use warnings;
use strict;
use Tk;

#declarations
my $char = "@";
my $num=0;
my $width = 250;
my $height =250;
my (@xco,@yco,$xco,$yco);


my $main=MainWindow->new();
$main->title("No Duplicates");

my $canvas=$main->Canvas(-width  => $width,
                           -height => $height)
                ->pack(-fill => "both",
                -expand => "true");

my $timer=Tk::After->new($main,'200','repeat',\&counter);


MainLoop();

# Subroutines
sub get_xcoord () {
    $xco = int (rand $height)+1;
    foreach my $value (@xco) { 
        if ($value != $xco ) {
            push @xco,$xco;
        }
    }
    
}

sub get_ycoord () {
    $yco = int (rand $width)+1;
    foreach my $value (@yco) {
        if ($value != $yco) {
            push @yco,$yco;
        }
    }
    
}

sub counter {
    get_ycoord();
    get_xcoord();
    $num++;
    $canvas->createText($xco,$yco, -anchor => 'center',
                                 -text   => $char,
                    -fill   => 'black');
                
    
                print "@xco\n";
                print "@yco\n";
                print "$xco , $yco\n";
    
}

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In reply to Array remains empty by witandhumor

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