A "The Oregon Trail" clone in space, in bash.

thot.sh

#!/bin/bash

FUEL_COST=5
FOOD_COST=2

START_FUEL=50
START_FOOD=70
START_PARTS=2

START_CREW_SIZE=4

WINDOW_HEIGHT=0
WINDOW_WIDTH=0
MENU_HEIGHT=0

RANDOM_EVENTS=(ILLNESS BREAKDOWN FLUX RAIDERS BLACKHOLE)
LANDMARKS=(
	"Pluto, long since occupied with long-range sensors and scanners, stands ready to, and indeed continues to probe the far reaches of the galaxy."
	"At the edge of the Sol system lies a treacherous asteroid belt. Many have been crushed by stray asteroids and misguided judgement."
	"The nearest star system to Sol, in ages past it stood as a reminder of the boundaries of sub-light travel, now a low-population sanctuary for adventurers and traders."
	"This region of space is particularly devoid of matter. Such low-density pockets are known to exist, but the vastness of it is astounding."
	"Rigel Prime, the center of the Rigel system, burns hot, basking its planetary bodies in warmth and radiation."
	"Tau Ceti Beta has recently become a waypoint for colonists headed towards Orion. There are many ships and makeshift stations in the vicinity."
	"You have come into range of the first man-made structure in this region of space. It has been constructed not by travellers from Sol, but by colonists from Orion. It stands as a monument to the colonists' success."
	"You have made it to Orion! Congratulations! Your crew is one of the few to start a new foothold for mankind!"
)

function initialize {
	# Populate the crew using the user names of currently logged in users and some preset names.
	NAMES=($(who | awk '{print $1}' | sort | uniq) carmen charles sam nick isabelle jean emilio ian pat theodore)
	CREW=($(whoami))

	while [ ${#CREW[@]} -lt $START_CREW_SIZE ]; do
		name=${NAMES[$[$RANDOM % ${#NAMES[@]}]]}

		unique=true
		for index in $(seq 0 $[${#CREW[@]} - 1]); do
			if [ ${CREW[$index]} = $name ]; then
				unique=false
				break
			fi
		done

		if [ $unique = true ]; then
			CREW+=($name)
		fi
	done

	CREW=($(echo "${CREW[*]}" | sed 's/[^ ]\+/\L\u&/g'))

	STATE=START
	TURN=0

	FUEL=$START_FUEL
	FOOD=$START_FOOD
	SPARE_PARTS=$START_PARTS
}

function consume_fuel {
	((FUEL-=FUEL_COST))
}

function consume_food {
	((FOOD-=FOOD_COST*${#CREW[@]}))
}

function spend_day {
	consume_fuel
	consume_food
}

function check_inventory {
	if [ $TURN -ge $((${#LANDMARKS[@]} - 1)) ]; then
		STATE=WIN
	elif [ ${#CREW[@]} -le 0 ]; then
		dialog --msgbox 'Your entire crew died, and your ship joins the fleet of ghost-ships littering the galaxy.' $WINDOW_HEIGHT $WINDOW_WIDTH
		STATE=LOSE
	elif [ $FUEL -le 0 ]; then
		dialog --msgbox 'You ran out of fuel, and drift, slowly, into a star.' $WINDOW_HEIGHT $WINDOW_WIDTH
		STATE=LOSE
	elif [ $FOOD -le 0 ]; then
		dialog --msgbox 'You ran out of food and starved.' $WINDOW_HEIGHT $WINDOW_WIDTH
		STATE=LOSE
	fi
}

function game_in_progress {
	[ $STATE != WIN ] && [ $STATE != LOSE ]
}

function random_event {
	if [ $TURN -eq 2 ] && [ $[$RANDOM % 100] -lt 30 ]; then
		STATE=COLLISION
	elif [ $[$RANDOM % 100] -lt 75 ]; then
		STATE=${RANDOM_EVENTS[$[$RANDOM % ${#RANDOM_EVENTS[@]}]]}
	else
		STATE=NOTHING
	fi
}

function process_event {
	case $STATE in
	ILLNESS)
		dialog --msgbox "A deadly illness has been contracted!\n${CREW[0]} was killed by the disease." $WINDOW_HEIGHT $WINDOW_WIDTH
		CREW=("${CREW[@]:1}")
		;;
	BREAKDOWN)
		if [ $SPARE_PARTS -gt 0 ]; then
			CHOICE=$(dialog --no-cancel --no-ok --menu "Oh no! The engine has broken down!\nYou can repair it with an engine part, or you can make repairs for 3 days." $WINDOW_HEIGHT $WINDOW_WIDTH $MENU_HEIGHT 'Use part' '' 'Wait 3 days' '' 2>&1 >/dev/tty)
			if [ "$CHOICE" = 'Use part' ]; then
				((SPARE_PARTS--))
			else
				consume_food && consume_food
			fi
		else
			dialog --msgbox "Oh no! The engine has broken down!\nYou have to make repairs for 3 days." $WINDOW_HEIGHT $WINDOW_WIDTH
			consume_food && consume_food
		fi
		;;
	FLUX)
		CHOICE=$(dialog --no-cancel --no-ok --menu "This region of space is highly turbulent. \nIf we go slowly we may avoid more damage, but if we keep our speed we won't waste supplies." $WINDOW_HEIGHT $WINDOW_WIDTH $MENU_HEIGHT 'Slow down' '' 'Continue' '' 2>&1 >/dev/tty)
		if [ "$CHOICE" = 'Slow down' ]; then
			consume_food && consume_food
		else
			if [ $[$RANDOM % 100] -lt 75 ]; then
				STATE=BREAKDOWN
				process_event
			fi
		fi
		;;
	RAIDERS)
		if [ $[$RANDOM % 100] -lt 50 ]; then
			STOLEN_FOOD=$((($RANDOM % 10) + 1))
			STOLEN_FOOD=$(($STOLEN_FOOD <= $FOOD ? $STOLEN_FOOD : $FOOD))
			((FOOD-=STOLEN_FOOD))
			STOLEN_FUEL=$((($RANDOM % 10) + 1))
			STOLEN_FUEL=$(($STOLEN_FUEL <= $FUEL ? $STOLEN_FUEL : $FUEL))
			((FUEL-=STOLEN_FUEL))
			dialog --msgbox "Raiders have come aboard your ship!\nThey have stolen $STOLEN_FOOD food and $STOLEN_FUEL fuel." $WINDOW_HEIGHT $WINDOW_WIDTH
		elif [ $[$RANDOM % 100] -lt 10 ]; then
			dialog --msgbox "Raiders have come aboard your ship!\n${CREW[0]} tried to fight back, but was killed." $WINDOW_HEIGHT $WINDOW_WIDTH
			CREW=("${CREW[@]:1}")
		else
			dialog --msgbox "Raiders have come aboard your ship!\nFortunately, you fended them off without any trouble." $WINDOW_HEIGHT $WINDOW_WIDTH
		fi
		;;
	BLACKHOLE)
		CHOICE=$(dialog --no-cancel --no-ok --menu "Sensors indicate that a black hole's gravitational field is affecting the region of space we were headed through. We could stay of course, but risk of being overcome by its gravity, or we could change course to go around, which will take longer." $WINDOW_HEIGHT $WINDOW_WIDTH $MENU_HEIGHT 'Go around' '' 'Continue' '' 2>&1 >/dev/tty)
		if [ "$CHOICE" = 'Go around' ]; then
			spend_day && spend_day
		else
			if [ $[$RANDOM % 100] -lt 50 ]; then
				dialog --msgbox "You were swept away into the black hole." $WINDOW_HEIGHT $WINDOW_WIDTH
				STATE=LOSE
			fi
		fi
		;;
	COLLISION)
		LOST_FOOD=$((($RANDOM % 10) + 1))
		LOST_FOOD=$(($LOST_FOOD <= $FOOD ? $LOST_FOOD : $FOOD))
		((FOOD-=LOST_FOOD))
		LOST_FUEL=$((($RANDOM % 10) + 1))
		LOST_FUEL=$(($LOST_FUEL <= $FUEL ? $LOST_FUEL : $FUEL))
		((FUEL-=LOST_FUEL))
		if [ $SPARE_PARTS -gt 0 ]; then
			CHOICE=$(dialog --no-cancel --no-ok --menu "Something hit us! Looks like there's some hull damage.\n $LOST_FOOD food and $LOST_FUEL fuel was vented out into space.\nYou can repair the damage with hull plates, or you can spend the next 3 days welding scrap together." $WINDOW_HEIGHT $WINDOW_WIDTH $MENU_HEIGHT 'Use part' '' 'Wait' '' 2>&1 >/dev/tty)
			if [ "$CHOICE" = 'Use part' ]; then
				((SPARE_PARTS--))
			else
				consume_food && consume_food
			fi
		else
			dialog --msgbox "Oh no! The engine has broken down!\nYou have to make repairs for 3 days." $WINDOW_HEIGHT $WINDOW_WIDTH
			consume_food && consume_food
		fi
		;;
	esac

}

function tick {
	CHOICE=$(dialog --no-cancel --no-ok --menu "${LANDMARKS[$[$TURN]]}\n\nCrew: ${CREW[*]}\nSpare Parts: ${SPARE_PARTS}\nFood: ${FOOD}\nFuel: ${FUEL}" $WINDOW_HEIGHT $WINDOW_WIDTH $MENU_HEIGHT 'Continue' '' 'Kill a crewmember' '' 2>&1 >/dev/tty)

	if [ "$CHOICE" = 'Kill a crewmember' ]; then
		CREW=("${CREW[@]:1}")
	fi

	check_inventory
	if game_in_progress; then
		random_event
	else
		return
	fi

	process_event

	spend_day
	check_inventory
	((TURN++))
}

initialize
while game_in_progress; do
	tick
done
clear