/calc command

[Oberoten]

Can we have something like this? Or how hard would it be to implement a command to do calculations on the fly?

/calc 10 * 1.25^3

/calc C * 1.8 + 30


Would be very very useful.

- Obe

[ErsatzPyre]

I usually just alt+tab win calc, but that would be quite a nice replacement indeed! It can't be very difficult to do, I would think.

Or is there a way to make an extension for a calc like that?

[Tenian]

I'm pretty sure you can register your own slash handler. I know the 4E_JPG has one that handles whispers (/w) so players can whisper to each other in addition to the GM.

Building a fully functional /calc command might get tricky depending on the level of complexity you want to incorporate, particularly the processing of ()'s might not be fun.

[Oberoten]

Well some progress at the least. I have modified the /die command so it can now do the four basic ones and round down. This is ... quite useful.

- Obe

[joshuha]

Could you maybe build a parser than could run the real LUA math commands but from within FG? Then the syntax would be different (not as compact) but things like nesting would work.

[Oberoten]

Well... I think I am going to scrap the first idea for this one.

No /calc command. Instead I am building a panel that has the most common tasks in it.

(( Square root (gravity * 2 * distance) for falling speed among other things. ))

- Obe

[Ikael]

hi, I have actually done small calculator script that parses given string and handels +, -, *, /, ^ and sqrt operations, it also understands ()'s . The only problem is that it doesn't understand float numbers and that's why it's not accurate with / and sqrt operations. The code itself is not pretty or perfectly "lua-certified" and fits in arounds 200 rows but for my own purposes it has served well. If you still need I could share the script.

[Oberoten]

It'd be VERY welcome. :)

- Obe

[Ikael]

I sent you email

[Bidmaron]

Any thought to making this an extension when you finish it, Obe?

[Oberoten]

It probably will be, yes. In a few days time when I am off work again. (( Nine days in a row now of 11-22 workshifts. URGH))

- Obe

[EugeneZ]

Well, I just made one in about twenty minutes that supports +,-,*,/, parens, and decimals in both input and output, and even labels.

Warning, this is my first ever lua script and no doubt sucks horribly...

Tested in 4e_jpg and d20, but it's so simple it should work in anything, really.

To use, just type /calc and then a math problem. You can also add a label at the end and the program will automatically round down and spit out the answer as a "draggable" number. So


/calc 3/2

displays 1.5


/calc 3/2 Gems

displays a DRAGGABLE "1 Gems".

It can be downloaded here: (I tried to attach but it was invalid... heh.)

https://www.eugenez.net/downloads/ezcalc.ext

I only tested some basic stuff in it, it's very possible there are a number of bugs. Report them here and I'll fix them...

[Ikael]

EugeneZ, that's a very neath code :) Thou, there are some bugs with ()'s for example in handling inner ()'s.

I also did some studing in making extansions and created extension from my calcualtor script (attached in this message). This updated version handles now decimal numbers, ()'s, +, -, ^, *, / and Sqrt operations. The result is shown as precise decimal number and also as a draggable number rounded to nearest end. It also allows user to create constants to CampaignRegistry, for example G = 9.81 or pi = 3.14, which may be used in the calcualtor.

Hopefully it's helpful for somebody

[Oberoten]

This is actually exactly what I was hoping for when I started out. :) Good Job. REALLY good job.

- Obe

[Oberoten]

It works even better than I thought it would. :)

I'll take a poke at it and try to understand how it works... this is a LOT more advanced than what I tried to create.

*hmmmm* I wonder if it could be incorporated into the /die command ...

/die 1d10*15 Goldpieces?

- Obe

[SpudmanWP]

EugeneZ, that's a very neath code :) Thou, there are some bugs with ()'s for example in handling inner ()'s.

I also did some studing in making extansions and created extension from my calcualtor script (attached in this message). This updated version handles now decimal numbers, ()'s, +, -, ^, *, / and Sqrt operations. The result is shown as precise decimal number and also as a draggable number rounded to nearest end. It also allows user to create constants to CampaignRegistry, for example G = 9.81 or pi = 3.14, which may be used in the calcualtor.

Hopefully it's helpful for somebody

Any chance of getting it parse dice rolls so we can do something like 3d6*1.25?

[Ikael]

for the die notation request I updated the calculator script. Now the calculation expression may contain any die notations: 3d6, d8 or d100 etc. and it will automatically make random number for each such a die notation before calculating it. Die results are printed to the console. The updated version can be downloaded from FGWiki. Direct link (https://oberoten.dyndns.org/fgwiki/images/5/54/Calculator.ext)