Version 6 of Lotto 2

Updated 2005-06-05 07:44:24

HJG This variation of Lotto by RS writes a log of each drawing to the console, compares the drawing to the tip, and counts the matching numbers.


  • clicking on the numbers should set/reset the numbers in the tip
  • use a text-widget or listview for the log
  • Statistics (frequency of drawn numbers, winnings...)

  proc main {} {
     set dx 15
     set dy 15
   # pack [canvas .c -width [expr {$dx*8}] -height [expr {$dy*9}]]
     pack [canvas .c -width [expr {$dx*8}] -height [expr {$dy*8}] -bg gray77]
     set x $dx; set y $dy
     foreach i [iota1 49] {
       # .c create text $x $y -text $i
         if [lsearch $::MyTip $i]>=0 {
         .c create text $x $y -text $i -fill white
         } else { 
         .c create text $x $y -text $i -fill black
       # puts "$i : $x $y" ;# debug
         if {$i%7} {
             incr x $dx
         } else {set x $dx; incr y $dy}
   # bind .c <1> {draw .c}
     button .b -text "Draw" -command {draw .c}
     pack   .b
     bind .c <1> {click .c}
  proc click w {
    puts "Click: [winfo pointerx $w] [winfo pointery $w]"

    # ?? better way to identify the number unter the cursor ??
    set dx 15
    set dy 15
   #set x [winfo pointerx .]
   #set y [winfo pointery .]
    set x [winfo pointerx $w]
    set y [winfo pointery $w]
    set c [expr {$x / $dx}]
    set r [expr {$y / $dy}]
    set n [expr {($r * 7 ) + $c}]
   #puts "Click: $x $y : $c $r ==> $n"
  proc draw w {
     global DrawNr MyTip
     incr   DrawNr
     $w delete marked
     set numbers [iota1 49]
     foreach i [iota1 6] {
         set n [ldraw numbers]
         lappend lucky $n
        #circle $w [$w bbox [ldraw numbers]] red
         circle $w [$w bbox $n] red
         update idletasks
        #after 500
         after  50
     set lucky [lsort -integer $lucky]

     set n [ldraw numbers]
     lappend lucky $n
     circle $w [$w bbox $n] yellow
    #puts "$n: [$w bbox $n]" ;#debug
     $w lower marked
     puts -nonewline "[ format "%5d: " $DrawNr ]"
     for {set i 0} {$i<=6} {incr i} {
       puts -nonewline "[format [expr {$i==6 ? "- %2d" : "%2d "}] [lindex $lucky $i] ]"
    #puts -nonewline "  Matches: "
      set win 0
      for {set i 0} {$i<=6} {incr i} {
        set z [lindex $lucky $i]
        if [lsearch $::MyTip $z]>=0 {
       # puts -nonewline "[format "%2d " $z]"
         incr win
    #puts "  Win: $win ."
     puts "  Win: [string repeat [string index "_...*!$$$" $win] $win]"
     if $win>3 { bell }
  proc circle {w coords color} {
     $w create oval $coords -fill {} -outline $color -width 2 -tag marked

 #------------------ Generally useful functions:

  proc iota1 n {
     set res {}
     for {set i 1} {$i<=$n} {incr i} {lappend res $i}
     set res
  proc ldraw _list {
     upvar 1 $_list list
     set pos [expr {int(rand()*[llength $list])}]
     K [lindex $list $pos] [set list [lreplace $list $pos $pos]]
  proc K {a b} {set a}


  lappend MyTip  1 8 11 15 47 49  16
  set     DrawNr 0
  catch {console show}
  puts "Lotto"
  puts "MyTip: $MyTip"


RS: For the question of how to identify the number under the cursor: canvas items receive unique integer identifiers, starting from 1. So if the 49 numbers are the first items created, their identifiers are the same as their numeric values, and the number under the cursor can be retrieved by

 $w find withtag current

(as the current tag goes temporarily to the item under the cursor). A more robust way, not depending on canvas object creation order, might be

 $w itemcget current -text

which of course returns the displayed string of a text item (and throws an error on others).

Category Toys