Make fishingbot turn. Lol.

fish.sh

#!/bin/bash
# companion script to fishingbot -- automatically turn

# Use the MiniHUD mod to get the yaw and pitch values
# Yaw wraps around at -180
YAW_MIN=135
YAW_MAX=-135
YAW_STEP=5

PITCH_MIN=-1
PITCH_MAX=1

SLEEP=15

((PITCH_AVG = (PITCH_MIN + PITCH_MAX) / 2))
((PITCH_DEV = PITCH_MAX - PITCH_MIN))

if ((YAW_MAX < YAW_MIN)); then
    ((YAW_MAX += 360))
fi

get_random_pitch() {
    echo $((PITCH_AVG + RANDOM % PITCH_DEV - PITCH_DEV / 2))
}

normalize_yaw() {
    local yaw=$1
    while ((yaw < -180)); do
        ((yaw += 360))
    done
    while ((yaw > 180)); do
        ((yaw -= 360))
    done
    echo $yaw
}

command_stream() {
    local yaw=$YAW_MIN
    echo "/look $yaw $PITCH_AVG"
    while sleep $SLEEP; do
        ((yaw += YAW_STEP))
        if ((yaw > YAW_MAX)); then
            yaw=$YAW_MIN
        fi
        echo "/look $(normalize_yaw $yaw) $(get_random_pitch)"
    done
}

touch ~/.fishbot_history
{
    command_stream &
    rlwrap -s 30000 -S: -f ~/.fishbot_history -H ~/.fishbot_history cat
} | java -jar fishingbot.jar -nogui