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AppGameKit Studio Chat / [SOLVED] Calculating CRC-32 in AGK

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YesItsASpoon
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Joined: 3rd Feb 2015
Location: Southern California
Posted: 7th Oct 2019 16:37
Does anyone know of an easy way to calculate a CRC-32 within AppGameKit Studio?

I use Tier 1. I'm looking to do this without using an online calculator, so that the process is completely internal & offline. I've found some general guides + sample code in other languages, but I'm having a hard time wrapping my head around what's actually going on with the process.

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Bengismo
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Joined: 20th Nov 2017
Location: Yorkshire, England
Posted: 7th Oct 2019 18:55
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Theres no built in function to do it (i dont think? ) but its pretty easy to just write one...



It produces answers that agree with the online converters so i think its right.
Getafix
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Posted: 7th Oct 2019 19:04
Hi - I concur, the output and function is correct. You could just put the table in pre-calculated.

Bengismo
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Location: Yorkshire, England
Posted: 7th Oct 2019 19:13
Indeed, good point! You could put the precompiled table in, but...

1) even on my 9 year old laptop it takes 600uS to generate the table and thats done just once at the beginning
2) It makes the bytecode smaller to compute it
3) if you want to change your polynomial then you will need a new table where as a one line change and it just works.

Precompute is nice but 50-50 as to whether its worth it. i dont like long tables in code personally but thats just me
YesItsASpoon
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Joined: 3rd Feb 2015
Location: Southern California
Posted: 7th Oct 2019 19:16
This is fantastic! Thank you so much!

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