Currency Exchange Calculator (script)

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Currency Exchange Calculator (script)
Category information
Front-end Genie
Author Isharon

This script tells you how much money is needed to convert from one currency to another, including the exchange fee. (You may have a few extra coppers after the exchange, because the script always rounds up to the nearest whole number.)

Changelog

06/12/2011

  • Fixed bug that caused script to underestimate the amount needed.

Syntax

.EXCH %AMOUNT %FEE

%amount: the desired amount of the currency you need
%fee: the bank's exchange fee, expressed as a whole number

For example, let's say that you're in the Crossing, and you need 4,500 Lirums. Your money is in Kronars, and the bank's exchange fee is 5%. You enter .EXCH 4500 5. After starting the script, you see a menu that prompts you to select your starting currency, which is Kronars. The script then tells you that you need to withdraw 5,922 Kronars if you want 4,500 Lirums.

Script

evalmath FEE 1 - %2/100

echo
echo Starting Currency:
echo
echo 1: Kronars
echo
echo 2: Lirums
echo
echo 3: Dokoras
echo
echo Enter Number:

matchre Kronars ^1
matchre Lirums ^2
matchre Dokoras ^3
matchwait

Kronars:

Start = Final / Exchange / (1-Fee)

evalmath KROLIR ceiling(%1/.8/%FEE)
evalmath KRODOK ceiling(%1/.7216/%FEE)

echo
echo Exchange fee used: %2%
echo
echo Need %1 Lirums? Withdraw %KROLIR Kronars
echo
echo Need %1 Dokoras? Withdraw %KRODOK Kronars
echo
goto end

Lirums:

evalmath LIRKRO ceiling(%1/1.25/%FEE)
evalmath LIRDOK ceiling(%1/.902/%FEE)

echo
echo Exchange fee used: %2%
echo
echo Need %1 Kronars? Withdraw %LIRKRO Lirums
echo
echo Need %1 Dokoras? Withdraw %LIRDOK Lirums
echo
goto end

Dokoras:

evalmath DOKKRO ceiling(%1/(1/.7216)/%FEE)
evalmath DOKLIR ceiling(%1/(1/.902)/%FEE)

echo
echo Exchange fee used: %2%
echo
echo Need %1 Kronars? Withdraw %DOKKRO Dokoras
echo
echo Need %1 Lirums? Withdraw %DOKLIR Dokoras
echo
goto end


end: