[Bug]: Custom currency should allow at least 2 decimal places

[Gadg8eer]

Version of OpenTTD

jgrpp-0.63.3

Expected result

Entering "0.61" into the custom currency field should give ¤0.61 = £1, causing £1 to equal ~¤1.50, in the same way pre-defined NewGRF currencies already (iirc) do.

Actual result

Entering a decimal point to the currency menu does not register in-game. Changing rate = 1 to rate = 0.61 causes the game to give a minor error and set the value to 0.

Steps to reproduce

1a. Open the game to the main menu.
2a. Open Game Options.
3a. Select "Currency > Custom..."
4a. Click the value of the currency to enter a new value.
5a. Type 0-9 and then a decimal point.

...or...

1b. Open openttd.cfg in Notepad++
2b. Find [currency] and change rate to a number with at least one decimal place.
3b. Save the file.
4b. Open the game.

[JGRennison]

Currencies are limited to only being an integer multiple of GBP. There isn't any support for fractional multipliers or currency display values smaller than the GBP value.
Any fractional part of currency multipliers set via global settings property 0B is ignored.

[Gadg8eer]

Currencies are limited to only being an integer multiple of GBP. There isn't any support for fractional multipliers or currency display values smaller than the GBP value.
Any fractional part of currency multipliers set via global settings property 0B is ignored.

Ah. That's fair. Thanks for explaining. I'll assume for now that fixing that would be problematic at best.