Simple blackjack card count - Shell (Help me please!)

Posted on 2013-12-03
Last Modified: 2013-12-04
Hi Guys,

New here and wondering if you could give me some help with this simple black jack card count im trying to troubleshoot.
So far it just loops without reading the card value's properly however the X to exit function is working.

Any help will be greatly appreciated

#by Anthony Challis
#on the 27/11/2013

echo "Blackjack PEW PEW"
echo "If you would like to exit hit X on each card"
echo "Pick a card"                                                            # echo pick a card
read CARD                                                                     # get card
echo "Pick another card"                                                # echo pick another card      
read CARD2                                                            #g et sec card
while ([ $CARD != X ]) || ([ $CARD2 != X ])                                     # if CARD and CARD2 do not = to X follow next line
case $CARD in                                                            # array card
"A") VALUE=11                                                            #ace =11
"2") VALUE=2                                                            # 2=2 and THE REST
"3") VALUE=3            
"4") VALUE=4
"5") VALUE=5
"6") VALUE=6
"7") VALUE=7
"8") VALUE=8
"9") VALUE=9
"10") VALUE=10
"J") VALUE=10                                                            # jack = 10
"Q") VALUE=10                                                            #queen = 10
"K") VALUE=10                                                            #king = 10
*) VALUE=0
                                                                  #others = 0      
esac                                                                  #calculate

case $CARD2 in                                                             #array card2
"A") VALUE2=11                                                            #ace =11
"2") VALUE2=2                                                            # 2=2 and etc
"3") VALUE2=3            
"4") VALUE2=4
"5") VALUE2=5
"6") VALUE2=6
"7") VALUE2=7
"8") VALUE2=8
"9") VALUE2=9
"10") VALUE2=10
"J") VALUE2=10                                                            # jack = 10
"Q") VALUE2=10                                                            #queen = 10
"K") VALUE2=10                                                            #king = 10
*) VALUE2=0                                                            #others = 0
esac                                                                  #calculate

if ([ $VALUE -eq 11 ]) && ([ $VALUE2 -eq 11 ])                                    #if VALUE and VALUE2 = 11 then
VALUE=1                                                                  #make VALUE = 1
fi                                                                  #end if
echo "You pick on Card 1 is $VALUE"
echo "You pick on Card 2 is $VALUE2"
GAME=$(($VALUE + $VALUE2))                                                #sum the value and value 2
clear                                                                  #break
echo "You Scored $GAME"
clear                                                                  #break
echo "Blackjack"
echo "If you would like to exit, press X on each Card"
echo "Pick a card"                                                      # echo pick a card
read CARD                                                            # get card
echo "Pick another card"                                                  #echo pick another card      
read CARD2                                                            #get sec card

done                                                                  #end of the loop

Question by:stellarsystems
  • 2
LVL 84

Expert Comment

ID: 39694576
It seems to work for me. (although it annoyingly clears the screen while I'm trying to read the score)
What problem are you having?
LVL 19

Accepted Solution

xterm earned 500 total points
ID: 39694590
After the line echo "You Scored $GAME" you have a clear statement - comment that out, and it will show you your score.
LVL 19

Assisted Solution

xterm earned 500 total points
ID: 39694624
Here is a slightly different spin on it using an array of values instead, maybe it can give you some ideas and direction:


if [ x$1 != xnotitle ]; then echo "Blackjack PEW PEW"; fi
echo "CTRL-C to exit"
echo "Pick a card"              # echo pick a card
read CARD1                      # get first card
echo "Pick another card"        # echo pick another card
read CARD2                      # get second card

        A=11 1=1 2=2 3=3 4=4 5=5 6=6 7=7 8=8 9=9 10=10 J=11 Q=11 K=11

while [ "x${values[count]}" != "x" ]
        key=`echo ${values[$count]} | cut -d= -f1`      # key is the first value in the array pair
        value=`echo ${values[$count]} | cut -d= -f2`    # value is the second value in the array pair
        CARD1=`echo $CARD1 | tr [a-z] [A-Z]`            # Make inputs case-insensitive by lowering all
        CARD2=`echo $CARD2 | tr [a-z] [A-Z]`            # Make inputs case-insensitive by lowering all
        if [ x$CARD1 = x$key ]; then
                echo "First card '$CARD1' is worth $value"
                score=$(( $score + $value ))            # add the value to the total score
        if [ x$CARD2 = x$key ]; then
                echo "Second card '$CARD2' is worth $value"
                score=$(( $score + $value ))            # add the value to the total score
        count=$(( $count + 1 ))

echo "You scored $score"
echo ""
$0 notitle

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Author Closing Comment

ID: 39694821
Thanks, i removed the clear statement and it is working fine also the array value used in second example is awesome

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