@dankcushions Yep, that was actually helpful! Thank you!

Here's what I did to make it all work.

Your cheat.7z file has to be in this folder:
/home/pi/RetroPie/BIOS/mame2016/cheat

You can get the cheat file here:
https://github.com/libretro/mame2016-libretro/tree/master/metadata

Load up a game in lr-mame2016 like "Donkey Kong" for example, and then go into options and "Enable Cheats."

Screen Shot 2021-03-02 at 8.00.47 PM.png

You then need to RESTART the game (It does not say restart required in the options, but you have to restart) and then when you load up the game again, press TAB on the keyboard to get to the MAME Menu:

Screen Shot 2021-03-02 at 8.02.10 PM.png

And then you can be just like Billy Mitchell and cheat to your hearts desire! :P
Screen Shot 2021-03-02 at 8.02.43 PM.png

I've tested it in quite a few games as so far so good!

Thanks again for the help!

@dteam

That is just what I was thinking tonight.

Cool, we were on the right track ;-)

Well, still we have to learn allot about MAME, we are not finished yet with learning !

@mortalwombat cheats in fbneo: https://retropie.org.uk/forum/topic/27826/mame-2003-question-regarding-lucky-and-wild/13?_=1612257367323

samples in fbneo: i’ve provided you with the link on how to use them and it specifically refers to donpachi: https://retropie.org.uk/docs/lr-fbneo/#samples. if you’re now talking about mame2003 - we weren’t talking about that romset before! please be specific.

mame2003 sample instructions are available on the mame2003 docs page: https://retropie.org.uk/docs/lr-mame2003/#samples

@barbudreadmon Thanks! I had put the cheats in the wrong folder.

@escc1986 this topic was already posted in 2017, https://github.com/libretro/mame2010-libretro/issues/38

jebediah2 created this issue in libretro/mame2010-libretro open Implementing cheat support like in mame2003 #38

We don't support 3rd party images, especially the ones loaded with ROMs - as are the ones that you're trying to choose from. Use the image from retropie.org.uk/download and follow the installation instructions from the Docs.

If you're hard pressed on time, I recommend you get your brother friend a ready made console, like one of the mini consoles released by Sega/Sony/Nintendo, which come already installed and with the games included.

I'm not sure the download location has changed, I don't see the doc page reference a precise location for each system. The cheats are downloaded from the Libretro buildbot AFAIK, not directly via git, the archive is generated from https://github.com/libretro/libretro-database. Both have been restored after the hack incident a while ago, so it shouldn't be an issue.

@afcalan2307
If this fails then it's the game, or change the emulator, I had this issue with gba Metroid fusion.

cheats = 1 cheat0_desc = "faster leveling" cheat0_code = "12345678+0000" cheat0_enable = "true"

My guess is because of the recent Libretro hack, no assets are currently available for download - including cheats.

@mitu /opt/retropie/configs/mame-libretro/retroarch.cfg is already in that state (and it's identical to retroarch.cfg.rp-dist)

@grant2258 I started a new topic on this to not clutter this one.

Reinstall and update game still crashes.

@mitu edit: duh got it. Thanks again.

@Clyde I'll try to figure that out (I'm new to retropie). thanks.

I've seen that there's a Python front-end for Mupen64 that has a GUI where you can select different cheats, but I'm guessing it just loads them before starting the emulator the same as the CLI you posted.

https://github.com/mupen64plus/mupen64plus-ui-python

How did you even get yours to run?
For the life of me, I can't get any PCE cd games to run.

Okay so I got the following cheats for Final Fantasy 8 entered and uploaded into the files but when I activate them in the game menu the only one that actually works properly is the 255 AP and the Infinite Item Usage. All Items and All Cards doesn't work properly (All items gives me 100 potions and All Cards give me 127 of one card) I've checked multiple times and they are entered correctly, can someone please give me some insight as to why they aren't working? I threw the Master Code in there after the fact but it didn't change anything at all.

cheats = 18

cheat0_desc = "255 AP After Battle"
cheat0_code = "80078CE0+00FF"
cheat0_enable = "false"

cheat1_desc = "Infinite Item Usage 1/2"
cheat1_code = "D01E459E+A0A3"
cheat1_enable = "false"

cheat2_desc = "Infinite Item Usage 2/4"
cheat2_code = "801E459E+2400"
cheat2_enable = "false"

cheat3_desc = "Infinite Item Usage 3/4"
cheat3_code = "D01E45AA+A0A0"
cheat3_enable = "false"

cheat4_desc = "Infinite Item Usage 4/4"
cheat4_code = "801E45AA+2400"
cheat4_enable = "false"

cheat5_desc = "All Items Maxed 1/2"
cheat5_code = "5000C602+0001"
cheat5_enable = "false"

cheat6_desc = "All Items Maxed 2/2"
cheat6_code = "80077EBC+6401"
cheat6_enable = "false"

cheat7_desc = "All Cards 1/7"
cheat7_code = "50004D01+0000"
cheat7_enable = "false"

cheat8_desc = "All Cards 2/7"
cheat8_code = "30078658+00FF"
cheat8_enable = "false"

cheat9_desc = "All Cards 3/7"
cheat9_code = "50002101+0000"
cheat9_enable = "false"

cheat10_desc = "All Cards 4/7"
cheat10_code = "300786A5+00F0"
cheat10_enable = "false"

cheat11_desc = "All Cards 5/7"
cheat11_code = "800786C6+FFFF"
cheat11_enable = "false"

cheat12_desc = "All Cards 6/7"
cheat12_code = "800786C8+FFFF"
cheat12_enable = "false"

cheat13_desc = "All Cards 7/7"
cheat13_code = "300786CA+0001"
cheat13_enable = "false"

cheat14_desc = "Master Code 1/4"
cheat14_code = "D009B2B0+FFF3"
cheat14_enable = "false"

cheat15_desc = "Master Code 2/4"
cheat15_code = "8009B2E0+0046"
cheat15_enable = "false"

cheat16_desc = "Master Code 3/4"
cheat16_code = "D009B2B0+FFF3"
cheat16_enable = "false"

cheat17_desc = "Master Code 4/4"
cheat17_code = "8009B2E2+1000"
cheat17_enable = "false"