UNIX for Dummies Questions & Answers

echo "Player one: Choose (R)ock, (P)aper (S)cissors"
stty -echo
read Pone
case $Pone
in
R) echo "Good Choice! Let's see what Player two chooses.";;
P) echo "Good Choice! Let's see what Player two chooses.";;
S) echo "Good Choice! Let's see what Player two chooses.";;
*) echo "Please choose only R,P or S.";;
esac
 
echo "Player two: Choose (R)ock, (P)aper (S)cissors"
stty -echo
read Ptwo
case $Ptwo
in
R) echo "Good Choice! ";;
P) echo "Good Choice! ";;
S) echo "Good Choice! ";;
*) echo "Please choose only R,P or S.";;
esac

#!/bin/bash

# Load score from files player1.score and player2.score, if they exist.
# Otherwise leave them 0.

p1_number_of_victories=0
p2_number_of_victories=0

if [ -e player1.score -a -e player2.score ]; then
        p1_number_of_victories=`cat player1.score`
        p2_number_of_victories=`cat player2.score`
fi

function p1_wins() {
        p1_number_of_victories=`expr $p1_number_of_victories + 1`
}

function p2_wins() {
        p2_number_of_victories=`expr $p2_number_of_victories + 1`
}

abort_game=n

until [ $abort_game = y ]; do
        PS3='Choose your action, player 1: '
        select action1 in "Rock" "Paper" "Scissors"; do break; done
        PS3='Choose your action, player 2: '
        select action2 in "Rock" "Paper" "Scissors"; do break; done

        case $action1 in
        "Rock")
                case $action2 in
                        "Rock") echo "Draw";;
                        "Paper") echo "Player 2 wins"; p2_wins;;
                        "Scissors") echo "Player 1 wins"; p1_wins;;
                esac
                ;;
        "Paper")
                case $action2 in
                        "Rock") echo "Player 1 wins"; p1_wins;;
                        "Paper") echo "Draw";;
                        "Scissors") echo "Player 2 wins"; p2_wins;;
                esac
                ;;
        "Scissors")
                case $action2 in
                        "Rock") echo "Player 2 wins"; p2_wins;;
                        "Paper") echo "Player 1 wins"; p1_wins;;
                        "Scissors") echo "Draw";;
                esac
                ;;
        esac

echo "Do you want to quit the game? [y/N]"
read abort_game
if [ -z "$abort_game" ]; then abort_game=n; fi # -z: input is empty -> ENTER was pressed

done
# end of loop

# Write new score to .score files
echo $p1_number_of_victories > player1.score
echo $p2_number_of_victories > player2.score

# exit gently
exit 0