Submission #457813

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Source Code Expand

declare -ar DIRECTIONS=( N NNE NE ENE E ESE SE SSE
                         S SSW SW WSW W WNW NW NNW N )
declare -ar BOUNDARIES=( 2 15 33 54 79 107 138 171 207 244 284 326 )

direction() {
    local -r deg=$1 dis=$2
    if [[ $(level $dis) = 0 ]] ; then
        echo -n C
    else
        local index=$(( (deg + 112) / 225 ))
        echo -n ${DIRECTIONS[index]}
    fi
}

level() {
    local -r speed=$(( ($1 + 3) / 6 )) # * 0.1[m/s]
    local boundary index=0
    for boundary in ${BOUNDARIES[@]} ; do
        (( speed <= boundary )) && echo -n ${index} && return
        index=$(( index + 1 ))
    done
    echo -n ${#BOUNDARIES[@]}
}

read deg dis
echo $(direction $deg $dis) $(level $dis)

Submission Info

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