9051blackjack.sh0100664000175300003300000001402210437344311012623 0ustar jillljedit#!/bin/sh dealerwin=0 playerwin=0 function initializeDeck { card=1 while [ $card -lt 53 ] do deck[$card]=$card card=$(( $card + 1 )) done player[1]=-1; player[2]=-1; player[3]=-1; player[4]=-1; player[5]=-1 dealer[1]=-1; dealer[2]=-1; dealer[3]=-1; dealer[4]=-1; dealer[5]=-1 } function pickCard { local errcount randomcard threshold=10 # max guesses for a card before we fall through errcount=0 while [ $errcount -lt $threshold ] do randomcard=$(( ( $RANDOM % 52 ) + 1 )) errcount=$(( $errcount + 1 )) if [ ${deck[$randomcard]} -ne 0 ] ; then picked=${deck[$randomcard]} deck[$picked]=0 # picked, remove it # echo randomly picked $picked return $picked fi done # If we get here, we've been uanble to randomly pick a card # so now we'll just step up until we find an available card randomcard=1 while [ ${deck[$randomcard]} -eq 0 ] do randomcard=$(( $randomcard + 1 )) done picked=$randomcard deck[$picked]=0 # picked, remove it # echo fell through, picked $picked return $picked } function shuffleDeck { count=1 while [ $count -le 52 ] do pickCard newdeck[$count]=$picked # echo " .. pickCard returned $picked" count=$(( $count + 1 )) done } function showCard { card=$1 if [ $card -lt 1 -o $card -gt 52 ] ; then echo "Bad card value: $card" exit 1 fi suite="$(( ( ( $card - 1) / 13 ) + 1))" rank="$(( $card % 13))" case $suite in 1 ) suite="Hearts" ;; 2 ) suite="Clubs" ;; 3 ) suite="Spades" ;; 4 ) suite="Diamonds" ;; * ) echo "Bad suite value: $suite"; exit 1 esac case $rank in 0 ) rank="King" ;; 1 ) rank="Ace" ;; 11) rank="Jack" ;; 12) rank="Queen" ;; esac cardname="$rank of $suite" } function handValue { # feed this as many cards as are in the hand handvalue=0 # initialize for cardvalue do if [ $cardvalue -ge 0 ] ; then rankvalue=$(( $cardvalue % 13 )) case $rankvalue in 0|11|12 ) rankvalue=10 ;; 1 ) rankvalue=11 ;; esac handvalue=$(( $handvalue + $rankvalue )) fi done } ################################################################# #### The main code block .... echo "**** Welcome to Blackjack.sh! **** " while [ /bin/true ] do # technically we should deal a certain number of hands from a deck # before we shuffle again, but for the purposes of this game, we'll # just go ahead and shuffle before each hand. initializeDeck shuffleDeck # Deal! player[1]=${newdeck[1]} player[2]=${newdeck[3]} nextplayercard=3 # player starts with two cards dealer[1]=${newdeck[2]} dealer[2]=${newdeck[4]} nextdealercard=3 # dealer also has two cards nextcard=5 # we've dealt the first four cards already # test for dealer or player blackjack handValue ${player[1]} ${player[2]} playerhandvalue=$handvalue handValue ${dealer[1]} ${dealer[2]} dealerhandvalue=$handvalue echo "" if [ $playerhandvalue -eq 21 -a $dealerhandvalue -eq 21 ] ; then echo "Extraordinary! Both the dealer and player were dealt a blackjack!" echo "Unfortunately, this means you didn't win: it's a push (or tie)." echo "" exit 0 fi if [ $dealerhandvalue -eq 21 ] ; then echo "Darn it! Dealer pulled a blackjack out of their hat. You lose." echo "" exit 0 elif [ $playerhandvalue -eq 21 ] ; then echo "NICE! You got a blackjack and won the game. Payout would be 3:2!" echo "" exit 0 fi # no blackjack, game proceeds as usual... # first off, we need to show one of the dealer's cards, so we'll show card #1 echo -n "Dealer's hand: " showCard ${dealer[1]} ; echo -n "$cardname, " echo "(card face down)" echo "" # and your hand: echo -n "You've been dealt: " showCard ${player[1]} ; echo -n "$cardname, " showCard ${player[2]} ; echo "$cardname" echo "" handValue ${player[1]} ${player[2]} while [ $handvalue -lt 22 ] do if [ $handvalue -lt 16 ] ; then echo -n "H)it or S)tand? (recommended: hit) " else echo -n "H)it or S)tand? (recommended: stand) " fi read answer if [ "$answer" = "stand" -o "$answer" = "s" ] ; then break elif [ "$answer" = "q" -o "$answer" = "quit" ] ; then echo "" ; echo -n "Player quits. Standings: dealer wins: $dealerwin " echo "and player wins: $playerwin" ; echo "" exit 0 fi player[$nextplayercard]=${newdeck[$nextcard]} showCard ${player[$nextplayercard]} echo "" ; echo "You've been dealt: $cardname" ; echo "" handValue ${player[1]} ${player[2]} ${player[3]} ${player[4]} ${player[5]} nextcard=$(( $nextcard + 1 )) nextplayercard=$(( $nextplayercard + 1 )) done if [ $handvalue -gt 21 ] ; then echo "Busted! Your hand is worth $handvalue" echo "" echo "****** Dealer Wins!" dealerwin=$(( $dealerwin + 1 )) break else echo "" echo "You stand with a hand value of $handvalue" echo "" playerhandvalue=$handvalue fi # now the dealer has to play out their hand, with standard Vegas # rules... echo -n "Dealer's hand: " showCard ${dealer[1]} ; echo -n "$cardname, " showCard ${dealer[2]} ; echo "$cardname" handValue ${dealer[1]} ${dealer[2]} while [ $handvalue -lt 17 ] do dealer[$nextdealercard]=${newdeck[$nextcard]} showCard ${dealer[$nextdealercard]} nextcard=$(( $nextcard + 1 )) nextdealercard=$(( $nextdealercard + 1 )) echo "" ; echo "Dealer takes: $cardname" handValue ${dealer[1]} ${dealer[2]} ${dealer[3]} ${dealer[4]} ${dealer[5]} done echo "" if [ $handvalue -gt 21 ] then echo "**** Dealer busted! Player wins with $playerhandvalue!" playerwin=$(( $playerwin + 1 )) elif [ $handvalue -eq $playerhandvalue ] then echo "**** Dealer and player tie with $handvalue points." elif [ $handvalue -lt $playerhandvalue ] then echo "**** Player wins with $playerhandvalue" playerwin=$(( $playerwin + 1 )) else echo "**** Dealer wins with $handvalue" dealerwin=$(( $dealerwin + 1 )) fi echo "" echo "---------------------------------------------------" done exit 0