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Kippykip

GBA Doom II Modding Tools

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Very nice, been hoping for a long time that someone might make inroads into the resource formats for this particular port.

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2 hours ago, Kippykip said:

P.S. Admins, the capacha on the registration is broken, even when you check the recapacha box and is done, I get this:

You did not pass the security check. Please try again.

oh ffs now what

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I'm probably showing my ignorance but how would one go about patching a gba cartridge? 

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4 hours ago, Tompig said:

I'm probably showing my ignorance but how would one go about patching a gba cartridge? 

Unfortunately there's no way to patch a cartridge itself (ROM = Read Only Memory). Unless you can desolder and happen to have a rom chip writer laying around you could probably modify the original cartridge itself.

However you can use a GBA flashcart to load the uncensored one on a real GBA/NDS, I play the patched rom via the "EZ Flash IV MicroSD" device.

 

Also just in case you're unaware what a flashcart is, it's a unofficial cartridge you can buy with a sd slot where you can stick a load of roms on the SD and then use the flashcart to load them into the device (in our case the GBA).

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You should see if you can get these tools onto the /idgames/ archives if possible.

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6 hours ago, Glaice said:

You should see if you can get these tools onto the /idgames/ archives if possible.

Not a bad idea, who would I ask here to go about doing that?

14 hours ago, konamikode said:

is there any rom-to-gba cartridge sorta thing out there, because I would love to play some of this on the go

You can get a flashcart, where you can copy roms to an SD and stick it in the cartridge and load it that way, as that's how I play it with the "EZ Flash IV MicroSD". 

Oh yeah one thing I forgot to mention is that I made the Gamma palettes have colour correction so the lowest setting is the PC palette, which is good for a backlit SP/NDS, and the highest setting is colour corrected to fit with a original non-lit screen. I find the middle setting looks good on a frontlit SP.

 

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Pretty awesome. This is what the GBA port should have always looked like. Red blood, darker tint, uncensored wolf levels and all.

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9 hours ago, Kippykip said:

Not a bad idea, who would I ask here to go about doing that?

 

Check the WADs & Mods subforum.

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Do you happen to know where the data for the levels is stored in the ROM? Their format is something I have an interest in trying to figure out.

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Come to think of it, maybe they made the colors exaggerated and vibrant to be easier to see on the GBA's screen since backlit lcd wasn't standard yet?

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Most likely.

 

GBA games typically use acid colors. Some emulators can dull them back down, but this feature seems to be rare for some reason. Many games look like shit without it.

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7 hours ago, Quasar said:

 

Do you happen to know where the data for the levels is stored in the ROM?

 

Using a hex editor, the only area where the level names show up is around (hex) DBB000.

I'd look around there to start.

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15 hours ago, Quasar said:

Do you happen to know where the data for the levels is stored in the ROM? Their format is something I have an interest in trying to figure out.

No unfortunately, but I've been trying but with no luck.

 

8 hours ago, Spie812 said:

Using a hex editor, the only area where the level names show up is around (hex) DBB000.

I'd look around there to start.

I believe that entire section is where all the text messages are stored in the game

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UPDATE: I was able to completely corrupt the behaviour of certain enemies!

At around offset 2EB500 you find certain names of sprites.

I found TROO underneath somewhere (Imp) and messed completely with the values above the "TROO" part. Now I have an unshootable imp with the spectre effect that doesn't move which seem to be shooting invisible archvile heat-blasts?

14 hours ago, Da Werecat said:

Most likely.

 

GBA games typically use acid colors. Some emulators can dull them back down, but this feature seems to be rare for some reason. Many games look like shit without it.

I believe that was the reason, but I've added colour correction to the later Gamma settings which make it similar to how the rom was released, however still looks more accurate to the PC palette on an original GBA model so I have no idea.

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I would really love to see a ROM memory map of this game along the lines of what they did to Super Mario 64.

 

I've been using a corrupter to try to find where the map data is, and although I've screwed up the renderer plenty, I haven't actually been able to change level geometry.

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13 hours ago, Spie812 said:

I would really love to see a ROM memory map of this game along the lines of what they did to Super Mario 64.

 

I've been using a corrupter to try to find where the map data is, and although I've screwed up the renderer plenty, I haven't actually been able to change level geometry.

I've only been able to move "THINGS" around with the corrupter like the teleporter.

 

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