#!/bin/bash

play_stop_bgm()
{
if [ "$1" == "play" ] ; then
play -qV0 $2/bgm.ogg repeat 9999&
__bgmPID="$(echo "$!")"
elif [ "$1" == "stop" ] ; then
if [[ "$__bgmPID" =~ ^[0-9]+$ ]] ; then
kill $__bgmPID
unset __bgmPID
fi
fi
}

select_soundpack()
{
local __soundPackVariable=$1
local i=1
for x in sounds/* ; do
if [ -d "$x" ] ; then
local soundPackList[$i]="$x"
if [ $i -lt 10 ] ; then
echo -n "0"
fi
echo "$i: $(basename "$x")"
let i++
fi
done
local continue="false"
while [ "$continue" == "false" ] ; do
local continue="true"
read -p "Select a soundpack: " soundpack
if ! [[ "$soundpack" =~ ^[0-9]+$ ]] ; then
local continue="false"
else
if ! [[ "$soundpack" =~ [1-9]+$ ]] ; then
local continue="false"
fi
if [ $soundpack -lt 1 -o $soundpack -gt $(($i - 1)) ] ; then
local continue="false"
fi
fi
done
if [[ $__soundPackVariable ]] ; then
eval $__soundPackVariable="'${soundPackList[$soundpack]}'"
else
echo "${soundPackList[$soundPack]}"
fi
}

play_bopit_direction()
{
local soundpack=$1
local __directionVariable=$2
direction="$(shuf -n 1 -e "center" "left" "right")"
case "$direction" in
"center")
play -qV0 $(shuf -n 1 -e $soundpack/cpu*ogg) remix v0.9 v0.9&
;;
"left")
play -qV0 $(shuf -n 1 -e $soundpack/cpu*ogg) remix v0.9 v0.1&
;;
"right")
play -qV0 $(shuf -n 1 -e $soundpack/cpu*ogg) remix v0.1 v0.9&
;;
esac
if [[ $__directionVariable ]] ; then
eval $__directionVariable="'$direction'"
else
echo "$direction"
fi
}

#Main Game Loop
select_soundpack sound
speed="1.50"
continue="true"
if [ -f "$sound/intro.ogg" ] ; then
play -qV0 $sound/intro.ogg
else
echo "Ready"
echo
sleep 1
echo "set"
echo
sleep 1
echo "go"
fi
play_stop_bgm play $sound
difficultyIndex=0
score=0
while [ "$continue" == "true" ] ; do
if [ $difficultyIndex -ge 2 ] ; then
difficultyIndex=0
if [ "$speed" != "0.01" ] ; then
speed="$(echo "scale=2;$speed - .01" | bc)"
fi
fi
play_bopit_direction $sound bopDirection
read -st $speed -n 1 key
case "${key^}" in
"J")
key="left"
;;
"K")
key="center"
;;
"L")
key="right"
;;
esac
if [ "$key" != "$bopDirection" ] ; then
continue="false"
else
let score++
case "$key" in
"center")
play -qV0 $(shuf -n 1 -e $sound/player*ogg) remix v0.9 v0.9
;;
"left")
play -qV0 $(shuf -n 1 -e $sound/player*ogg) remix v0.9 v0.1
;;
"right")
play -qV0 $(shuf -n 1 -e $sound/player*ogg) remix v0.1 v0.9
;;
esac
fi
let difficultyIndex++
done
play_stop_bgm stop
echo
echo "Score: $score."
exit 0