--setup / variables
os.execute 'title Space Game'
os.execute 'color 0b'
os.execute 'cls'
ship = {1 , "CLASS-1" , 2 , "CLASS-2"}
shipname = ""
capname = ""
shiphull = 0

money = 2000

uranium = 0
titanium = 0

uranium_price = 150
titanium_price = 500

--------------------

--pause func

function pause()
	print ("\n{Press enter}")
	io.read()
end

function notop()
	print ("That's not an option. Try again.")
	pause()
end

function noteno()
	print ("You don't have enough to do that.")
	pause()
end

--------------------

--shipname func

while shipname == "" do

	print ("\n{Name your ship}:")
	shipname = io.read()

	if shipname == "" then
		notop()
		os.execute 'cls'
	else
		break
	end
end

while capname == "" do

	os.execute 'cls'

	print ("\n{Name your captain}:")
	capname = io.read()

	if capname == "" then
		notop()
		os.execute 'cls'
	else
		break
	end
end

--------------------

function inventory()

	os.execute 'cls'

	print ("\n(You open up your ships inventory.)")

	print ("\n|INVENTORY|")


	print ("\n\n[URANIUM]: "..uranium.."")
	print ("[TITANIUM]: "..titanium.."")

	print ("\n[$CREDS$]: "..money.."")

  	print ("\n\n{No options in inventory.}")
	pause()
	ss01()
end

--shop func

function shop()

	os.execute 'cls'

	print ("\n(You are at Space Station "..ssname.."'s shop.)")

	print ("\n|SHOP|")

	print ("\n[$CREDS$]: "..money.."")

	print ("\n1. [BUY URANIUM]: "..uranium_price.."")
  	print ("2. [SELL URANIUM]: "..uranium_price.."")
	print ("3. [BUY TITANIUM]: "..titanium_price.."")
  	print ("4. [SELL TITANIUM]: "..titanium_price.."")
	print ("0. <--- Back")

	print ("\n{Select a number}:")

	shopop = io.read()

	if shopop == "1" and money >= uranium_price then
		money = money - uranium_price
		uranium = uranium + 1
		print ("You bought 1 Uranium. [ +1 Uranium ]")
		print ("Total Uranium: "..uranium.."")
		pause()
		shop()
	elseif shopop == "1" and money < uranium_price then
		noteno()
		shop()
	elseif shopop == "2" and uranium > 0 then
		money = money + uranium_price
		uranium = uranium - 1
		print ("You sold 1 Uranium. [ +$"..uranium_price.."")
		print ("Total Uranium: "..uranium.."")
		pause()
		shop()
	elseif shopop == "2" and uranium == 0 then
		noteno()
		shop()
	elseif shopop == "3" then
		money = money - titanium_price
		titanium = titanium + 1
		print ("You bought 1 Titanium. [ +1 Titanium ]")
		print ("Total Titanium: "..titanium.."")
		pause()
		shop()
	elseif shopop == "3" and money < titanium_price then
		noteno()
		shop()
	elseif shopop == "4" and titanium > 0 then
		money = money + titanium_price
		titanium = titanium - 1
		print ("You sold 1 Titanium. [ +$"..titanium_price.."")
		print ("Total Titanium: "..titanium.."")
		pause()
		shop()
	elseif shopop == "4" and titanium == 0 then
		noteno()
		shop()
	elseif shopop == "0" then
		ss01()
  	else
    	notop()
    	shop()
	end
end

--------------------

--job board func

function joboard()

end

--------------------

--repair func

function repair()

end

--------------------

--depart func

function depart()

end

--------------------

--space station 01

function ss01()

	os.execute 'cls'

	ssname = "01"

	os.execute 'cls'

	print ("\n (You have started at Space Station "..ssname..")")

	print ("\n|#SPACE STATION#|"..ssname.."")


	print ("\n\n[VESSEL ID]: "..shipname.."")
	print ("[CPTN NAME]: "..capname.."")
	print ("[SHIP TYPE]: "..ship[2].."")
	print ("[$CREDS$]: "..money.."")


	print ("\n\n[USER COMMANDS]:")

	print ("\n{Type 'i' to open inventory}")
	print ("{Type 's' to open shop.}")
	print ("{Type 'j' to open job board.}")
	print ("{Type 'r' to repair ship hull.}")
	print ("{Type 'd' to depart from station.}")

	usercom = io.read()

	if usercom == "i" then
		inventory()
	elseif usercom == "s" then
		shop()
	elseif usercom == "j" then
		joboard()
	elseif usercom == "r" then
		repair()
	elseif usercom == "d" then
		depart()
	else
	  	notop()
	  	ss01()
	end
end

--------------------

--Opening starting func
ss01()
--------------------